/*
 * Copyright 2020 Adobe. All rights reserved.
 * This file is licensed to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. You may obtain a copy
 * of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under
 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
 * OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */

/* Design tokens are loaded via a separate <link> in head.html for parallel fetching.
   See: /premium/styles/spectrum-tokens.css */

/* ========================================
         FOUNDATION - Design Tokens
         ======================================== */
:root {
  /* stylelint-disable value-keyword-case -- typography names should use their appropriate cases */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
  --font-family-heading:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
  --font-family-mono: 'Courier New', monospace;
}

.spectrum,
:root {
  /* ========================================
      TYPOGRAPHY - Load from Spectrum tokens
      ======================================== */
  --font-family-base: var(--spectrum-sans-font-family-stack);
  --font-family-heading: var(--spectrum-sans-font-family-stack);
  --font-family-mono: var(--spectrum-code-font-family-stack);

  /* ========================================
      COLORS - Built on Spectrum tokens
      ======================================== */

  /* Primary (Blue) - Using Spectrum Blue scale */
  --color-primary: var(--spectrum-blue-900);
  --color-primary-dark: var(--spectrum-blue-800);
  --color-primary-darker: var(--spectrum-blue-700);
  --color-primary-light: var(--spectrum-blue-900);
  --color-primary-lighter: var(--spectrum-blue-1000);
  --color-primary-alpha-5: rgb(var(--spectrum-blue-800-rgb) / 5%);
  --color-primary-alpha-10: rgb(var(--spectrum-blue-800-rgb) / 10%);
  --color-primary-alpha-20: rgb(var(--spectrum-blue-800-rgb) / 20%);

  /* Secondary (Gray) - Using Spectrum Gray scale */
  --color-secondary: var(--spectrum-gray-600);
  --color-secondary-dark: var(--spectrum-gray-700);
  --color-secondary-darker: var(--spectrum-gray-800);
  --color-secondary-light: var(--spectrum-gray-500);
  --color-secondary-lighter: var(--spectrum-gray-400);
  --color-secondary-alpha-10: rgb(var(--spectrum-gray-600-rgb) / 10%);
  --color-secondary-lightest: var(--spectrum-gray-50);

  /* Purple Scale - Using Spectrum Purple scale */
  --color-purple-400: var(--spectrum-purple-400);
  --color-purple-600: var(--spectrum-purple-600);
  --color-purple-700: var(--spectrum-purple-700);
  --color-purple-800: var(--spectrum-purple-800);
  --color-purple-900: var(--spectrum-purple-900);
  --color-purple-1000: var(--spectrum-purple-1000);
  --color-purple-alpha-10: rgb(var(--spectrum-purple-800-rgb) / 10%);
  --color-purple-alpha-20: rgb(var(--spectrum-purple-800-rgb) / 20%);

  /* Silver Scale - Using Spectrum silver scale */
  --color-silver-100: var(--spectrum-silver-100);
  --color-silver-1000: var(--spectrum-silver-1000);
  --color-silver-1100: var(--spectrum-silver-1100);
  --color-silver-700: var(--spectrum-silver-700);

  /* Yellow Scale - Using Spectrum yellow scale */
  --color-yellow-100: var(--spectrum-yellow-100);
  --color-yellow-600: var(--spectrum-yellow-600);
  --color-yellow-400: var(--spectrum-yellow-400);
  --color-yellow-800: var(--spectrum-yellow-800);

  /* Green Scale - Using Spectrum green/celery scale */
  --color-green-400: var(--spectrum-green-400);
  --color-green-600: var(--spectrum-green-600);
  --color-green-700: var(--spectrum-celery-700);
  --color-green-800: var(--spectrum-green-800);

  /* Red Scale - Using Spectrum Red scale */
  --color-red-400: var(--spectrum-red-400);
  --color-red-600: var(--spectrum-red-600);
  --color-red-800: var(--spectrum-red-800);

  /* Magenta Scale - Using Spectrum Magenta scale */
  --color-magenta-400: var(--spectrum-magenta-400);
  --color-magenta-600: var(--spectrum-magenta-600);
  --color-magenta-800: var(--spectrum-magenta-800);

  /* Cyan Scale - Using Spectrum Cyan scale */
  --color-cyan-400: var(--spectrum-cyan-400);
  --color-cyan-600: var(--spectrum-cyan-600);
  --color-cyan-800: var(--spectrum-cyan-800);

  /* Chartreuse Scale - Using Spectrum Chartreuse scale */
  --color-chartreuse-400: var(--spectrum-chartreuse-400);
  --color-chartreuse-600: var(--spectrum-chartreuse-600);
  --color-chartreuse-800: var(--spectrum-chartreuse-800);

  /* Fuchsia Scale - Using Spectrum Fuchsia scale */
  --color-fuchsia-100: var(--spectrum-fuchsia-100);
  --color-fuchsia-200: var(--spectrum-fuchsia-200);
  --color-fuchsia-300: var(--spectrum-fuchsia-300);
  --color-fuchsia-400: var(--spectrum-fuchsia-400);
  --color-fuchsia-500: var(--spectrum-fuchsia-500);
  --color-fuchsia-600: var(--spectrum-fuchsia-600);
  --color-fuchsia-700: var(--spectrum-fuchsia-700);
  --color-fuchsia-800: var(--spectrum-fuchsia-800);
  --color-fuchsia-900: var(--spectrum-fuchsia-900);
  --color-fuchsia-1000: var(--spectrum-fuchsia-1000);
  --color-fuchsia-1100: var(--spectrum-fuchsia-1100);
  --color-fuchsia-1200: var(--spectrum-fuchsia-1200);
  --color-fuchsia-1300: var(--spectrum-fuchsia-1300);
  --color-fuchsia-1400: var(--spectrum-fuchsia-1400);
  --color-fuchsia-1500: var(--spectrum-fuchsia-1500);
  --color-fuchsia-alpha-10: rgb(var(--spectrum-fuchsia-800-rgb) / 10%);
  --color-fuchsia-alpha-20: rgb(var(--spectrum-fuchsia-800-rgb) / 20%);

  /* Gray Scale - Using Spectrum Gray scale */
  --color-gray-50: var(--spectrum-gray-50);
  --color-gray-75: var(--spectrum-gray-75);
  --color-gray-100: var(--spectrum-gray-100);
  --color-gray-200: var(--spectrum-gray-200);
  --color-gray-300: var(--spectrum-gray-300);
  --color-gray-400: var(--spectrum-gray-400);
  --color-gray-500: var(--spectrum-gray-500);
  --color-gray-600: var(--spectrum-gray-600);
  --color-gray-700: var(--spectrum-gray-700);
  --color-gray-800: var(--spectrum-gray-800);
  --color-gray-900: var(--spectrum-gray-900);
  --color-gray-1000: var(--spectrum-gray-1000);
  --color-gray: rgb(243 243 243);

  /* Semantic Colors - Success (Using Spectrum Green) */
  --color-success: var(--spectrum-green-900);
  --color-success-dark: var(--spectrum-green-800);
  --color-success-darker: var(--spectrum-green-700);
  --color-success-light: var(--spectrum-green-1400);
  --color-success-lighter: var(--spectrum-green-1500);

  /* Semantic Colors - Error (Using Spectrum Red) */
  --color-error: var(--spectrum-red-900);
  --color-error-dark: var(--spectrum-red-800);
  --color-error-darker: var(--spectrum-red-700);
  --color-error-light: var(--spectrum-red-1400);
  --color-error-lighter: var(--spectrum-red-1500);

  /* Semantic Colors - Warning (Using Spectrum Orange) */
  --color-warning: var(--spectrum-orange-1000);
  --color-warning-dark: var(--spectrum-orange-900);
  --color-warning-darker: var(--spectrum-orange-800);
  --color-warning-light: var(--spectrum-orange-1400);
  --color-warning-lighter: var(--spectrum-orange-1500);

  /* Semantic Colors - Info (Using Spectrum Blue) */
  --color-info: var(--spectrum-blue-800);
  --color-info-dark: var(--spectrum-blue-700);
  --color-info-darker: var(--spectrum-blue-600);
  --color-info-light: var(--spectrum-blue-1300);
  --color-info-lighter: var(--spectrum-blue-1400);

  /* Base Colors */
  --color-white: var(--spectrum-gray-25);
  --color-black: var(--spectrum-gray-1000);
  --color-border: var(--spectrum-gray-300);
  --color-border-disabled: var(--spectrum-gray-300);
  --color-border-light: var(--spectrum-gray-200);
  --color-border-lighter: var(--spectrum-gray-100);
  --color-background: var(--spectrum-white);
  --color-background-alt: var(--spectrum-gray-50);
  --color-text: var(--spectrum-gray-800);
  --color-text-secondary: var(--spectrum-gray-600);
  --color-text-muted: var(--spectrum-gray-500);

  /* Links - Semantic aliases for link colors */
  --link-color: var(--color-gray-1000);
  --link-hover-color: var(--color-gray-1000);
  --light-color: var(--color-gray-50);

  /* ========================================
      Theme Independent Colors
    ======================================== */

  --color-ti-brown-1200-rgb: 88, 61, 21;
  --color-ti-brown-1200: rgb(var(--color-ti-brown-1200-rgb));

  /* Theme Independent Colors - Palette fixed to light-mode values, never change with theme */
  --color-ti-gray-25-rgb: 255, 255, 255; /* spectrum-gray-25 light */
  --color-ti-gray-25: rgb(var(--color-ti-gray-25-rgb));
  --color-ti-gray-100-rgb: 233, 233, 233; /* spectrum-gray-100 light */
  --color-ti-gray-100: rgb(var(--color-ti-gray-100-rgb));
  --color-ti-gray-200-rgb: 225, 225, 225; /* spectrum-gray-200 light */
  --color-ti-gray-200: rgb(var(--color-ti-gray-200-rgb));
  --color-ti-gray-800-rgb: 41, 41, 41; /* spectrum-gray-800 light */
  --color-ti-gray-800: rgb(var(--color-ti-gray-800-rgb));
  --color-ti-gray-900-rgb: 19, 19, 19; /* spectrum-gray-900 light */
  --color-ti-gray-900: rgb(var(--color-ti-gray-900-rgb));
  --color-ti-gray-1000-rgb: 0, 0, 0; /* spectrum-gray-1000 light */
  --color-ti-gray-1000: rgb(var(--color-ti-gray-1000-rgb));
  --color-ti-blue-700-rgb: 93, 137, 255; /* spectrum-blue-700 light */
  --color-ti-blue-700: rgb(var(--color-ti-blue-700-rgb));
  --color-ti-blue-900-rgb: 59, 99, 251; /* spectrum-blue-900 light */
  --color-ti-blue-900: rgb(var(--color-ti-blue-900-rgb));
  --color-ti-blue-1300-rgb: 16, 40, 140; /* spectrum-blue-1300 light */
  --color-ti-blue-1300: rgb(var(--color-ti-blue-1300-rgb));
  --color-ti-orange-900-rgb: 194, 78, 0; /* spectrum-orange-900 light */
  --color-ti-orange-900: rgb(var(--color-ti-orange-900-rgb));
  --color-ti-orange-1400-rgb: 73, 24, 0; /* spectrum-orange-1400 light */
  --color-ti-orange-1400: rgb(var(--color-ti-orange-1400-rgb));
  --color-ti-red-800-rgb: 240, 56, 35; /* spectrum-red-800 light */
  --color-ti-red-800: rgb(var(--color-ti-red-800-rgb));
  --color-ti-red-1400-rgb: 80, 16, 6; /* spectrum-red-1400 light */
  --color-ti-red-1400: rgb(var(--color-ti-red-1400-rgb));
  --color-ti-yellow-400-rgb: 245, 199, 0; /* spectrum-yellow-400 light */
  --color-ti-yellow-400: rgb(var(--color-ti-yellow-400-rgb));
  --color-ti-yellow-600-rgb: 210, 149, 0; /* spectrum-yellow-600 light */
  --color-ti-yellow-600: rgb(var(--color-ti-yellow-600-rgb));
  --color-ti-green-900-rgb: 5, 131, 78; /* spectrum-green-900 light */
  --color-ti-green-900: rgb(var(--color-ti-green-900-rgb));
  --color-ti-fuchsia-500-rgb: 243, 147, 255; /* spectrum-fuchsia-500 light */
  --color-ti-fuchsia-500: rgb(var(--color-ti-fuchsia-500-rgb));

  /* ========================================
      TYPOGRAPHY - Fluid Typography System
      ======================================== */

  /*
   * Three-Tier Fluid Typography System:
   * 1. BASE: Maximum size at 1920px viewport (Spectrum Medium scale)
   * 2. FLUID: Scales proportionally with viewport using calc(startPx + slope * (100vw - 320px))
   *    — mathematically equivalent to base * (100vw / 1920) but avoids nested var() * var()
   *    which Safari/Firefox can mishandle.
   *    slope = basePx / 1920;  startPx = basePx * 320 / 1920 = basePx / 6
   * 3. MIN: Minimum size for readability — set to match the proportional value at the
   *    crossover viewport so clamp() kicks in at the same point as the old system.
   * 4. FINAL: clamp(MIN, FLUID, BASE) for smooth responsive scaling
   */

  /* ========================================
     BODY FONT SIZES - Base Sizes (Spectrum Medium at 1920px)
     ======================================== */
  --font-size-base-2xs: 0.6875rem; /* 11px */
  --font-size-base-xs: 0.75rem; /* 12px - spectrum-body-size-xs */
  --font-size-base-sm: 0.875rem; /* 14px - spectrum-body-size-s */
  --font-size-base-md: 1rem; /* 16px - spectrum-body-size-m */
  --font-size-base: var(--font-size-base-md); /* Legacy alias for base font size */
  --font-size-base-lg: 1.125rem; /* 18px - spectrum-body-size-l */
  --font-size-base-xl: 1.25rem; /* 20px - spectrum-body-size-xl */
  --font-size-base-2xl: 1.375rem; /* 22px - spectrum-body-size-xxl */
  --font-size-base-3xl: 1.563rem; /* 25px - spectrum-body-size-xxxl */

  /* Body Font Sizes - Fluid Calculations (equivalent to base * 100vw / 1920) */
  --font-size-fluid-2xs: calc(0.1146rem + 0.00573 * (100vw - 320px));
  --font-size-fluid-xs: calc(0.125rem + 0.00625 * (100vw - 320px));
  --font-size-fluid-sm: calc(0.1458rem + 0.00729 * (100vw - 320px));
  --font-size-fluid-md: calc(0.1667rem + 0.00833 * (100vw - 320px));
  --font-size-fluid-lg: calc(0.1875rem + 0.009375 * (100vw - 320px));
  --font-size-fluid-xl: calc(0.2083rem + 0.01042 * (100vw - 320px));
  --font-size-fluid-2xl: calc(0.2292rem + 0.01146 * (100vw - 320px));
  --font-size-fluid-3xl: calc(0.2604rem + 0.01302 * (100vw - 320px));

  /* Body Font Sizes - Minimum Constraints */
  --font-size-min-2xs: 0.5625rem; /* 9px */
  --font-size-min-xs: 0.625rem; /* 10px */
  --font-size-min-sm: 0.75rem; /* 12px */
  --font-size-min-md: 0.875rem; /* 14px */
  --font-size-min-lg: 0.9375rem; /* 15px */
  --font-size-min-xl: 1rem; /* 16px */
  --font-size-min-2xl: 1.125rem; /* 18px */
  --font-size-min-3xl: 1.25rem; /* 20px */

  /* Body Font Sizes - Final Clamped Values */
  --font-size-2xs: clamp(
    var(--font-size-min-2xs),
    var(--font-size-fluid-2xs),
    var(--font-size-base-2xs)
  );
  --font-size-xs: clamp(
    var(--font-size-min-xs),
    var(--font-size-fluid-xs),
    var(--font-size-base-xs)
  );
  --font-size-sm: clamp(
    var(--font-size-min-sm),
    var(--font-size-fluid-sm),
    var(--font-size-base-sm)
  );
  --font-size-md: clamp(
    var(--font-size-min-md),
    var(--font-size-fluid-md),
    var(--font-size-base-md)
  );
  --font-size-lg: clamp(
    var(--font-size-min-lg),
    var(--font-size-fluid-lg),
    var(--font-size-base-lg)
  );
  --font-size-xl: clamp(
    var(--font-size-min-xl),
    var(--font-size-fluid-xl),
    var(--font-size-base-xl)
  );
  --font-size-2xl: clamp(
    var(--font-size-min-2xl),
    var(--font-size-fluid-2xl),
    var(--font-size-base-2xl)
  );
  --font-size-3xl: clamp(
    var(--font-size-min-3xl),
    var(--font-size-fluid-3xl),
    var(--font-size-base-3xl)
  );

  /* ========================================
     HEADING FONT SIZES - Base Sizes (Spectrum Medium at 1920px)
     ======================================== */
  --heading-font-size-base-2xs: 0.875rem; /* 14px - spectrum-heading-size-xxs */
  --heading-font-size-base-xs: 1rem; /* 16px - spectrum-heading-size-xs */
  --heading-font-size-base-sm: 1.125rem; /* 18px - spectrum-heading-size-s */
  --heading-font-size-base-md: 1.375rem; /* 22px - spectrum-heading-size-m */
  --heading-font-size-base-lg: 1.75rem; /* 28px - spectrum-heading-size-l */
  --heading-font-size-base-xl: 2.25rem; /* 36px - spectrum-heading-size-xl */
  --heading-font-size-base-2xl: 2.5rem; /* 40px - spectrum-heading-size-xxl */
  --heading-font-size-base-3xl: 3.125rem; /* 50px - spectrum-heading-size-xxxl */

  /* Heading Font Sizes - Fluid Calculations (equivalent to base * 100vw / 1920) */
  --heading-font-size-fluid-2xs: calc(0.1458rem + 0.00729 * (100vw - 320px));
  --heading-font-size-fluid-xs: calc(0.1667rem + 0.00833 * (100vw - 320px));
  --heading-font-size-fluid-sm: calc(0.1875rem + 0.009375 * (100vw - 320px));
  --heading-font-size-fluid-md: calc(0.2292rem + 0.01146 * (100vw - 320px));
  --heading-font-size-fluid-lg: calc(0.2917rem + 0.01458 * (100vw - 320px));
  --heading-font-size-fluid-xl: calc(0.375rem + 0.01875 * (100vw - 320px));
  --heading-font-size-fluid-2xl: calc(0.4167rem + 0.02083 * (100vw - 320px));
  --heading-font-size-fluid-3xl: calc(0.5208rem + 0.02604 * (100vw - 320px));

  /* Heading Font Sizes - Minimum Constraints */
  --heading-font-size-min-2xs: 0.75rem; /* 12px */
  --heading-font-size-min-xs: 0.875rem; /* 14px */
  --heading-font-size-min-sm: 0.9375rem; /* 15px */
  --heading-font-size-min-md: 1.125rem; /* 18px */
  --heading-font-size-min-lg: 1.375rem; /* 22px */
  --heading-font-size-min-xl: 1.625rem; /* 26px */
  --heading-font-size-min-2xl: 1.75rem; /* 28px */
  --heading-font-size-min-3xl: 1.875rem; /* 30px */

  /* Heading Font Sizes - Final Clamped Values */
  --heading-font-size-2xs: clamp(
    var(--heading-font-size-min-2xs),
    var(--heading-font-size-fluid-2xs),
    var(--heading-font-size-base-2xs)
  );
  --heading-font-size-xs: clamp(
    var(--heading-font-size-min-xs),
    var(--heading-font-size-fluid-xs),
    var(--heading-font-size-base-xs)
  );
  --heading-font-size-sm: clamp(
    var(--heading-font-size-min-sm),
    var(--heading-font-size-fluid-sm),
    var(--heading-font-size-base-sm)
  );
  --heading-font-size-md: clamp(
    var(--heading-font-size-min-md),
    var(--heading-font-size-fluid-md),
    var(--heading-font-size-base-md)
  );
  --heading-font-size-lg: clamp(
    var(--heading-font-size-min-lg),
    var(--heading-font-size-fluid-lg),
    var(--heading-font-size-base-lg)
  );
  --heading-font-size-xl: clamp(
    var(--heading-font-size-min-xl),
    var(--heading-font-size-fluid-xl),
    var(--heading-font-size-base-xl)
  );
  --heading-font-size-2xl: clamp(
    var(--heading-font-size-min-2xl),
    var(--heading-font-size-fluid-2xl),
    var(--heading-font-size-base-2xl)
  );
  --heading-font-size-3xl: clamp(
    var(--heading-font-size-min-3xl),
    var(--heading-font-size-fluid-3xl),
    var(--heading-font-size-base-3xl)
  );

  /* Font Weights - Using Spectrum weights */
  --font-weight-normal: var(--spectrum-regular-font-weight); /* 400 */
  --font-weight-medium: var(--spectrum-medium-font-weight); /* 500 */
  --font-weight-semibold: var(--spectrum-bold-font-weight); /* 700 */
  --font-weight-bold: var(--spectrum-bold-font-weight); /* 700 */
  --font-weight-extrabold: var(--spectrum-extra-bold-font-weight); /* 800 */
  --font-weight-black: var(--spectrum-black-font-weight); /* 900 */

  /* Line Heights - Using Spectrum line heights */
  --line-height-none: 1;
  --line-height-tight: var(--spectrum-line-height-100); /* 1.3 */
  --line-height-snug: 1.25;
  --line-height-normal: var(--spectrum-line-height-200); /* 1.5 */
  --line-height-relaxed: 1.6;
  --line-height-loose: 2;

  /* Letter Spacing */
  --letter-spacing-tighter: -0.05em;
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;

  /* ========================================
      SPACING - Fluid spacing for larger values
      ======================================== */

  /* Small spacing values remain static for consistency */
  --spacing-0: 0;
  --spacing-xs: var(--spectrum-spacing-75); /* 4px */
  --spacing-sm: var(--spectrum-spacing-100); /* 8px */
  --spacing-md: var(--spectrum-spacing-200); /* 12px */
  --spacing-lg: var(--spectrum-spacing-300); /* 16px */
  --spacing-20: 20px;

  /* Larger spacing - Base Sizes (Spectrum at 1920px) */
  --spacing-base-xl: 1.5rem; /* 24px - spectrum-spacing-400 */
  --spacing-base-2xl: 2rem; /* 32px - spectrum-spacing-500 */
  --spacing-base-3xl: 2.5rem; /* 40px - spectrum-spacing-600 */
  --spacing-base-4xl: 4rem; /* 64px - spectrum-spacing-800 */
  --spacing-base-5xl: 5rem; /* 80px - spectrum-spacing-900 */
  --spacing-base-6xl: 6rem; /* 96px - spectrum-spacing-1000 */

  /* Larger spacing - Fluid Calculations (equivalent to base * 100vw / 1920) */
  --spacing-fluid-xl: calc(0.25rem + 0.0125 * (100vw - 320px));
  --spacing-fluid-2xl: calc(0.3333rem + 0.01667 * (100vw - 320px));
  --spacing-fluid-3xl: calc(0.4167rem + 0.02083 * (100vw - 320px));
  --spacing-fluid-4xl: calc(0.6667rem + 0.03333 * (100vw - 320px));
  --spacing-fluid-5xl: calc(0.8333rem + 0.04167 * (100vw - 320px));
  --spacing-fluid-6xl: calc(1rem + 0.05 * (100vw - 320px));

  /* Larger spacing - Minimum Constraints */
  --spacing-min-xl: 1.25rem; /* 20px */
  --spacing-min-2xl: 1.5rem; /* 24px */
  --spacing-min-3xl: 2rem; /* 32px */
  --spacing-min-4xl: 2.5rem; /* 40px */
  --spacing-min-5xl: 3rem; /* 48px */
  --spacing-min-6xl: 3.5rem; /* 56px */

  /* Larger spacing - Final Clamped Values */
  --spacing-xl: clamp(var(--spacing-min-xl), var(--spacing-fluid-xl), var(--spacing-base-xl));
  --spacing-2xl: clamp(var(--spacing-min-2xl), var(--spacing-fluid-2xl), var(--spacing-base-2xl));
  --spacing-3xl: clamp(var(--spacing-min-3xl), var(--spacing-fluid-3xl), var(--spacing-base-3xl));
  --spacing-4xl: clamp(var(--spacing-min-4xl), var(--spacing-fluid-4xl), var(--spacing-base-4xl));
  --spacing-5xl: clamp(var(--spacing-min-5xl), var(--spacing-fluid-5xl), var(--spacing-base-5xl));
  --spacing-6xl: clamp(var(--spacing-min-6xl), var(--spacing-fluid-6xl), var(--spacing-base-6xl));

  /* ========================================
      BORDERS - Using Spectrum tokens where available
      ======================================== */

  /* Border Widths */
  --border-width-0: 0;
  --border-width-thin: var(--spectrum-border-width-100); /* 1px */
  --border-width-normal: var(--spectrum-border-width-200); /* 2px */
  --border-width-thick: 3px;
  --border-width-thicker: var(--spectrum-border-width-400); /* 4px */

  /* Border Radius - Using Spectrum corner radius */
  --border-radius-none: var(--spectrum-corner-radius-0); /* 0px */
  --border-radius-sm: var(--spectrum-corner-radius-75); /* 4px */
  --border-radius-md: var(--spectrum-corner-radius-300); /* 6px */
  --border-radius-lg: var(--spectrum-corner-radius-400); /* 7px */
  --border-radius-xl: var(--spectrum-corner-radius-500); /* 8px */
  --border-radius-2xl: var(--spectrum-corner-radius-600); /* 9px */
  --border-radius-3xl: var(--spectrum-corner-radius-700); /* 10px */
  --border-radius-4xl: var(--spectrum-corner-radius-800); /* 16px */
  --border-radius-12: 12px;
  --border-radius-20: 20px;
  --border-radius-24: 24px;
  --border-radius-circle: 50%;
  --border-radius-800: var(--spectrum-corner-radius-800);
  --border-radius-48: 48px;

  /* ========================================
      SHADOWS - Custom shadows (not in Spectrum)
      ======================================== */

  /* Shadow color token — override in dark mode for theme-aware shadows */
  --shadow-none: none;
  --shadow-xs: 0 1px 2px 0 rgba(var(--spectrum-gray-1000-rgb), 5%);
  --shadow-sm: 0 1px 4px rgba(var(--spectrum-gray-1000-rgb), 10%);
  --shadow-md: 0 4px 12px rgba(var(--spectrum-gray-1000-rgb), 10%);
  --shadow-lg: 0 8px 16px rgba(var(--spectrum-gray-1000-rgb), 15%);
  --shadow-xl: 0 12px 24px rgba(var(--spectrum-gray-1000-rgb), 20%);
  --shadow-2xl: 0 4px 32px rgba(var(--spectrum-gray-1000-rgb), 25%);
  --shadow-3xl: 0 1px 6px 0 rgba(var(--spectrum-gray-1000-rgb), 12%);

  /* Theme-independent shadows */
  --shadow-ti-2xl: 0 4px 32px rgba(var(--color-ti-gray-1000-rgb), 25%);
  --shadow-ti-3xl: 0 1px 6px 0 rgba(var(--color-ti-gray-1000-rgb), 12%);
  --banner-gradient: linear-gradient(
    0deg,
    var(--spectrum-gray-25) 2.88%,
    rgba(var(--spectrum-gray-25-rgb), 0%) 88.08%
  );
  --banner-gradient-horizontal: linear-gradient(
    90deg,
    var(--spectrum-gray-25) 0%,
    rgba(var(--spectrum-gray-25-rgb), 0%) 85%
  );
  --banner-gradient-overlay:
    linear-gradient(
      90deg,
      rgba(var(--spectrum-gray-25-rgb), 0%) 0%,
      rgba(var(--spectrum-gray-25-rgb), 10%) 0%,
      var(--spectrum-gray-25) 0%,
      rgba(var(--spectrum-gray-25-rgb), 0%) 35%
    ),
    linear-gradient(0deg, var(--spectrum-gray-25) 0%, rgba(var(--spectrum-gray-25-rgb), 0%) 58.08%);
  --header-shimmer-gradient: linear-gradient(
    90deg,
    var(--spectrum-gray-75) 25%,
    var(--spectrum-gray-200) 50%,
    var(--spectrum-gray-75) 75%
  );

  /* Focus Ring Shadow */
  --shadow-focus: 0 0 0 3px var(--color-primary-alpha-10);
  --shadow-focus-error: 0 0 0 3px rgba(var(--spectrum-red-900-rgb), 10%);

  /* Inset Shadows */
  --shadow-inner: inset 0 2px 4px 0 rgba(var(--spectrum-gray-1000-rgb), 6%);

  /* ========================================
      TRANSITIONS & ANIMATIONS
      ======================================== */

  /* Duration - Using Spectrum animation tokens */
  --duration-fast: var(--spectrum-animation-duration-100);
  --duration-default: var(--spectrum-animation-duration-200);
  --duration-slow: var(--spectrum-animation-duration-400);
  --duration-slower: var(--spectrum-animation-duration-600);

  /* Timing Functions - Using Spectrum easing */
  --ease-linear: var(--spectrum-animation-linear);
  --ease-in: var(--spectrum-animation-ease-in);
  --ease-out: var(--spectrum-animation-ease-out);
  --ease-in-out: var(--spectrum-animation-ease-in-out);

  /* Transitions */
  --transition-fast: var(--duration-fast) var(--ease-out);
  --transition-default: var(--duration-default) var(--ease-out);
  --transition-slow: var(--duration-slow) var(--ease-out);
  --transition-all: all var(--duration-default) var(--ease-out);

  /* Animation Duration */
  --animation-duration: 0.3s;
  --spinner-duration: 1s;

  /* ========================================
      Z-INDEX SCALE
      ======================================== */

  --z-index-base: 0;
  --z-index-dropdown: 100;
  --z-index-sticky: 200;
  --z-index-fixed: 300;
  --z-index-overlay: 400;
  --z-index-modal: 1000;
  --z-index-popover: 1100;
  --z-index-tooltip: 1200;
  --z-index-notification: 1300;

  /* ========================================
      COMPONENT-SPECIFIC TOKENS
      ======================================== */

  /* Navigation */
  --nav-height: 64px;

  /* Button Padding */
  --button-padding-sm: var(--spacing-xs) var(--spacing-lg); /* 6px 12px */
  --button-padding-md: var(--spacing-sm) var(--spacing-xl); /* 8px 16px */
  --button-padding-lg: var(--spacing-lg) var(--spacing-2xl); /* 12px 24px */

  /* Button Sizes - Base Sizes (Spectrum at 1920px) */
  --button-size-base-sm: 1.5rem; /* 24px - spectrum-component-height-75 */
  --button-size-base-md: 2rem; /* 32px - spectrum-component-height-100 */
  --button-size-base-lg: 2.5rem; /* 40px - spectrum-component-height-200 */

  /* Button Sizes - Fluid Calculations (equivalent to base * 100vw / 1920) */
  --button-size-fluid-sm: calc(0.25rem + 0.0125 * (100vw - 320px));
  --button-size-fluid-md: calc(0.3333rem + 0.01667 * (100vw - 320px));
  --button-size-fluid-lg: calc(0.4167rem + 0.02083 * (100vw - 320px));

  /* Button Sizes - Minimum Constraints */
  --button-size-min-sm: 1.375rem; /* 22px */
  --button-size-min-md: 1.75rem; /* 28px */
  --button-size-min-lg: 2.25rem; /* 36px */

  /* Button Sizes - Final Clamped Values */
  --button-size-sm: clamp(
    var(--button-size-min-sm),
    var(--button-size-fluid-sm),
    var(--button-size-base-sm)
  );
  --button-size-md: clamp(
    var(--button-size-min-md),
    var(--button-size-fluid-md),
    var(--button-size-base-md)
  );
  --button-size-lg: clamp(
    var(--button-size-min-lg),
    var(--button-size-fluid-lg),
    var(--button-size-base-lg)
  );

  /* Button Border Radius */
  --button-border-radius: var(--border-radius-24); /* 24px - fully rounded */

  /* Button Typography */
  --button-font-size-sm: var(--font-size-sm); /* 14px */
  --button-font-size-md: var(--font-size-md); /* 16px */
  --button-font-size-lg: var(--font-size-lg); /* 18px */
  --button-font-weight: var(--font-weight-normal); /* 400 */

  /* Badge Heights - Base Sizes (at 1920px) */
  --badge-height-base-xs: 1.25rem; /* 20px */
  --badge-height-base-sm: 1.5rem; /* 24px */
  --badge-height-base-md: 2rem; /* 32px */
  --badge-height-base-lg: 2.5rem; /* 40px */

  /* Badge Heights - Fluid Calculations (equivalent to base * 100vw / 1920) */
  --badge-height-fluid-xs: calc(0.2083rem + 0.01042 * (100vw - 320px));
  --badge-height-fluid-sm: calc(0.25rem + 0.0125 * (100vw - 320px));
  --badge-height-fluid-md: calc(0.3333rem + 0.01667 * (100vw - 320px));
  --badge-height-fluid-lg: calc(0.4167rem + 0.02083 * (100vw - 320px));

  /* Badge Heights - Minimum Constraints */
  --badge-height-min-xs: 1.125rem; /* 18px */
  --badge-height-min-sm: 1.375rem; /* 22px */
  --badge-height-min-md: 1.75rem; /* 28px */
  --badge-height-min-lg: 2.25rem; /* 36px */

  /* Badge Heights - Final Clamped Values */
  --badge-height-xs: clamp(
    var(--badge-height-min-xs),
    var(--badge-height-fluid-xs),
    var(--badge-height-base-xs)
  );
  --badge-height-sm: clamp(
    var(--badge-height-min-sm),
    var(--badge-height-fluid-sm),
    var(--badge-height-base-sm)
  );
  --badge-height-md: clamp(
    var(--badge-height-min-md),
    var(--badge-height-fluid-md),
    var(--badge-height-base-md)
  );
  --badge-height-lg: clamp(
    var(--badge-height-min-lg),
    var(--badge-height-fluid-lg),
    var(--badge-height-base-lg)
  );

  /* Badge Horizontal Padding */
  --badge-padding-x-xs: var(--spacing-sm); /* 8px */
  --badge-padding-x-sm: var(--spacing-md); /* 12px */
  --badge-padding-x-md: var(--spacing-lg); /* 16px */
  --badge-padding-x-lg: var(--spacing-lg); /* 16px */

  /* Badge Font Sizes */
  --badge-font-size-2xs: var(--font-size-2xs); /* 11px */
  --badge-font-size-xs: var(--font-size-xs); /* 12px */
  --badge-font-size-sm: var(--font-size-sm); /* 14px */
  --badge-font-size-md: var(--font-size-md); /* 16px */
  --badge-font-size-lg: var(--font-size-lg); /* 18px */

  /* Badge Icon Sizes */
  --badge-icon-size-xs: 12px;
  --badge-icon-size-sm: 14px;
  --badge-icon-size-md: 16px;
  --badge-icon-size-lg: 18px;

  /* Badge Gaps (space between icon and text) */
  --badge-gap-xs: var(--spectrum-spacing-50); /* 4px */
  --badge-gap-sm: var(--spectrum-spacing-50); /* 4px */
  --badge-gap-md: var(--spacing-xs); /* 6px */
  --badge-gap-lg: var(--spacing-sm); /* 8px */

  /* Badge Common Properties */
  --badge-border-radius-sm: var(--border-radius-sm); /* 4px */
  --badge-border-radius-md: var(--border-radius-md); /* 8px */
  --badge-border-radius-lg: var(--border-radius-lg); /* 10px */
  --badge-font-weight: var(--font-weight-medium); /* 500 */
  --badge-letter-spacing: 0.5px;

  /* Tags (Pill-shaped badges) */
  --tag-border-radius: var(--border-radius-full); /* 9999px - fully rounded */
  --tag-padding: var(--spacing-xs) var(--spacing-md); /* 6px 8px */

  /* Avatars */
  --avatar-size-xs: var(--spectrum-avatar-size-200); /* 28px */
  --avatar-size-sm: var(--spectrum-avatar-size-500); /* 32px */
  --avatar-size-md: var(--spectrum-avatar-size-700); /* 40px */
  --avatar-size-lg: 60px;
  --avatar-size-xl: 80px;
  --avatar-size-2xl: 120px;
  --avatar-border-radius: var(--border-radius-circle);
  --avatar-bg: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  --avatar-border-width: var(--border-width-normal);

  /* icon sizes */
  --icon-size-10: 10px;
  --icon-size-12: 12px;
  --icon-size-16: 16px;
  --icon-size-18: 18px;
  --icon-size-20: 20px;
  --icon-size-24: 24px;
  --icon-size-26: 26px;
  --icon-size-30: 30px;
  --icon-size-32: 32px;
  --icon-size-60: 60px;

  /* Modals */
  --modal-padding: var(--spacing-2xl);
  --modal-border-radius: var(--border-radius-4xl);
  --modal-shadow: var(--shadow-ti-2xl);
  --modal-backdrop-bg: rgb(0 0 0 / 25%);
  --modal-backdrop-bg-light: rgb(236 236 236 / 80%);
  --modal-backdrop-blur: 20px;

  /* Tabs */
  --tab-padding: var(--spacing-md) var(--spacing-lg);
  --tab-border-width: var(--border-width-normal);
  --tab-active-border-color: var(--color-primary);

  /* Carousel/Slider */
  --carousel-nav-size: 40px;
  --carousel-nav-bg: var(--color-white);
  --carousel-nav-shadow: var(--shadow-md);
  --carousel-indicator-size: 8px;
  --carousel-indicator-active-size: 24px;

  /* ========================================
      BREAKPOINTS (for reference in JS)
      ======================================== */

  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;

  /* ========================================
      LAYOUT - Max width for layout containers
      ======================================== */
  --layout-max-width: 1920px;
}

/* ========================================
      RESET styles
      ======================================== */
* {
  box-sizing: border-box;
}

body {
  display: none;
  margin: 0;
  background-color: var(--color-gray-50);
  color: var(--color-text);
  font-family: var(--font-family-base);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
}

body.appear {
  display: flex;
  flex-direction: column;
}

header {
  height: var(--nav-height);
  flex-shrink: 0;
}

footer {
  flex-shrink: 0;
}

header .header,
footer .footer {
  visibility: hidden;
}

header .header[data-block-status='loaded'],
footer .footer[data-block-status='loaded'] {
  visibility: visible;
}

.hidden {
  display: none !important;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-top: 0.8em;
  margin-bottom: 0.25em;
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  scroll-margin: var(--spacing-4xl);
  color: var(--color-gray-1000);
}

h1,
.h1 {
  font-size: var(--heading-font-size-3xl); /* 50px */
}

h2,
.h2 {
  font-size: var(--heading-font-size-2xl); /* 40px */
}

h3,
.h3 {
  font-size: var(--heading-font-size-xl); /* 36px */
}

h4,
.h4 {
  font-size: var(--heading-font-size-lg); /* 28px */
}

h5,
.h5 {
  font-size: var(--heading-font-size-md); /* 22px */
}

h6,
.h6 {
  font-size: var(--heading-font-size-sm); /* 18px */
}

p,
dl,
ol,
ul,
pre,
blockquote {
  margin-top: 0.8em;
  margin-bottom: 0.25em;
}

code,
pre {
  font-size: var(--font-size-sm);
}

pre {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  background-color: var(--light-color);
  overflow-x: auto;
  white-space: pre;
}

/* Main container - wraps left-rail, main, and right-rail */
.main-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--spacing-20) 0;
  max-width: var(--layout-max-width);
  width: 100%;
  margin: 0 auto;
}

/* Left navigation rail */
aside.left-rail {
  width: 180px;
  transition: width var(--transition-default);
}

aside.left-rail.collapsed {
  width: 48px;
}

@media (width >= 900px) {
  aside.left-rail {
    position: sticky;
    top: 0;
    overflow: hidden;
  }
}

/* Main content area */
main {
  --main-padding-inline: var(--spacing-xl);

  flex: 1;
  background-color: var(--color-white);
  border-radius: var(--border-radius-3xl);
  overflow: hidden;
  padding: 0 var(--main-padding-inline) var(--main-padding-inline);
  margin-right: var(--spacing-20);
}

@media (width >= 900px) {
  main {
    --main-padding-inline: var(--spacing-3xl);
  }
}

main:empty {
  display: none;
}

.block-level-error .section {
  display: unset;
}

main .section:not(:has(> :not(.hidden))) {
  display: none;
}

/* 2-column layout for sections in main - learnings template only */

body.learnings main > .section {
  display: flex;
  gap: var(--spacing-xl);
  align-items: flex-start;
  flex-direction: column;
}

/* First child (left column) has fixed width */
body.learnings main > .section > div:first-child {
  width: clamp(260px, calc(58.333px + 0.18229 * (100vw - 320px)), 350px);
  flex-shrink: 0;
  transition: width var(--transition-default);
}

/* First child (left column) collapsed state */
body.learnings main > .section > div:first-child.collapsed {
  width: 48px;
}

/* Second child (right column) takes remaining space */
body.learnings main > .section > div:nth-child(2) {
  flex: 1;
  min-width: 0;
  min-height: 400px;
  width: 100%;
}

/* Right sidebar rail */
aside.right-rail:not(:empty) {
  margin-right: var(--spacing-20);
  background-color: var(--color-white);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  min-height: 300px;
}

/* Desktop layout - horizontal arrangement */
@media (width >= 900px) {
  .main-container {
    flex-flow: row nowrap;
  }

  aside.left-rail,
  main,
  aside.right-rail {
    flex-shrink: 0;
  }

  body.learnings main > .section {
    flex-direction: row;
  }
}

/* Progress bar css */
.progress-bar {
  height: 6px;
  background-color: var(--color-gray-300);
  overflow: hidden;
  border-radius: var(--border-radius-sm);
}

.progress-bar .progress-fill {
  height: 100%;
  background-color: var(--color-primary);
  width: 0%;
  border-radius: var(--border-radius-sm);
}

.progress-status {
  position: relative;
  padding-left: var(--spacing-lg);
  font-size: var(--font-size-xs);
  color: var(--color-gray-800);
}

.progress-status::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: var(--border-radius-circle);
}

.progress-status.no-started::before {
  background-color: var(--color-yellow-600);
}

.progress-status.in-progress::before {
  background-color: var(--color-fuchsia-800);
}

.progress-status.completed::before {
  background-color: var(--color-green-700);
}

.block-level-error {
  text-align: center;
  background-color: var(--color-gray-50);
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding: var(--spacing-5xl) 0;
}

.block-level-error .default-content-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.block-level-error .default-content-wrapper :is(h1, h2, h3, h4, h5, h6, p) {
  margin: 0;
}

.block-level-error picture {
  display: flex;
  justify-content: center;
}

/* Mobile layout - stack sections vertically */
@media (width <= 900px) {
  .main-container {
    flex-direction: column;
    padding: 10px;
  }

  aside.left-rail {
    width: 100%;
    margin-bottom: 20px;
    min-height: 250px;
    position: static;
  }

  aside.left-rail.collapsed {
    width: 0;
    min-height: auto;
  }

  main {
    width: 100%;
    margin-right: 0;
    margin-bottom: 20px;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
  }

  aside.right-rail {
    width: 100%;
    margin-right: 0;
  }
}

input,
textarea,
select {
  font: inherit;
  color: var(--color-text);
  background-color: var(--color-white);
}

/* links */
a {
  color: var(--link-color);
  text-decoration: none;
  overflow-wrap: break-word;
}

a:hover {
  color: var(--link-color);
  text-decoration: none;
}

button {
  font: inherit;
}

/* Links in composer editor */
.cdb-text a,
.cdb-reply-text a,
.composer-quill-editor .ql-editor a {
  color: var(--color-primary);
  text-decoration: underline;
}

main img {
  max-width: 100%;
  width: auto;
  height: auto;
}

.icon {
  display: inline-block;
  height: var(--spacing-xl);
  width: var(--spacing-xl);
}

.icon img {
  height: 100%;
  width: 100%;
}

.button-container > a:not(.button) {
  color: var(--color-primary);
  text-decoration: underline;
}

/* ========================================
    BASE BUTTON
    ======================================== */

.button {
  /* Default variant (primary) properties */
  --button-bg: var(--color-primary);
  --button-color: var(--color-white);
  --button-border: transparent;
  --button-shadow: var(--shadow-none);

  /* Size properties (defaults to medium) */
  --button-padding: var(--button-padding-md);
  --button-height: var(--button-size-md);
  --button-font-size: var(--button-font-size-md);
  --button-icon-size: 20px;
  --button-icon-gap: var(--spacing-sm);
}

.button,
a.button:any-link {
  /* Layout */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--button-icon-gap);
  box-sizing: border-box;

  /* Spacing */
  margin: 0;
  padding: var(--button-padding);
  min-height: var(--button-height);
  max-width: 100%;

  /* Typography */
  font-family: var(--font-family-base);
  font-size: var(--button-font-size);
  font-weight: var(--button-font-weight);
  line-height: var(--line-height-tight);
  text-align: center;
  text-decoration: none;
  white-space: nowrap;

  /* Visual */
  border: var(--border-width-normal) solid var(--button-border);
  border-radius: var(--button-border-radius);
  background-color: var(--button-bg);
  color: var(--button-color);

  /* Effects */
  cursor: pointer;
  transition: all var(--transition-default);
  box-shadow: var(--button-shadow);
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ========================================
    INTERACTIVE STATES
    ======================================== */

/* Disabled State */
.button:disabled,
.button.button-disabled,
a.button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

a.button:disabled {
  --button-color: var(--color-gray-400);
  --button-color-hover: var(--color-gray-400);
}

.button:active {
  --button-shadow: var(--shadow-sm);

  transform: translateY(0);
}

/* ========================================
    BUTTON VARIANTS
    ======================================== */

/* Primary Button (default - filled blue) */
.button-primary {
  --button-bg: var(--color-primary);
  --button-bg-hover: var(--color-primary-dark);
  --button-color: var(--color-ti-gray-25);
  --button-color-hover: var(--color-ti-gray-25);
  --button-border: transparent;
  --button-border-hover: transparent;
}

/* Secondary Button (dark gray filled) */
.button-secondary {
  --button-bg: var(--color-gray-900);
  --button-bg-hover: var(--color-gray-900);
  --button-color: var(--color-white);
  --button-color-hover: var(--color-white);
  --button-border: var(--color-gray-900);
  --button-border-hover: var(--color-gray-900);
}

/* Tertiary Button (outlined with dark border) */
.button-tertiary {
  --button-bg: transparent;
  --button-bg-hover: transparent;
  --button-color: var(--color-gray-1000);
  --button-color-hover: var(--color-gray-1000);
  --button-border: var(--color-gray-1000);
  --button-border-hover: var(--color-gray-1000);
}

/* Outlined Button (outlined with light gray border and white background) */
.button-outlined {
  --button-bg: transparent;
  --button-bg-hover: var(--color-gray-50);
  --button-color: var(--color-text);
  --button-color-hover: var(--color-text);
  --button-border: var(--color-gray-400);
  --button-border-hover: var(--color-gray-400);
}

/* Link Button (text only, minimal styling) */
.button-link {
  --button-bg: transparent;
  --button-bg-hover: transparent;
  --button-color: var(--color-text);
  --button-color-hover: var(--color-text);
  --button-border: transparent;
  --button-border-hover: transparent;
  --button-padding: var(--spacing-xs) var(--spacing-sm);
  --button-height: auto;
  --button-transform-hover: none;
  --button-shadow-hover: none;

  border-radius: 0;
}

.button-link-native {
  --button-bg: transparent;
  --button-bg-hover: transparent;
  --button-color: var(--color-primary);
  --button-color-hover: var(--color-primary);
  --button-border: none;
  --button-border-hover: transparent;
  --button-padding: 0;
  --button-height: auto;
  --button-transform-hover: none;
  --button-shadow-hover: none;

  border-radius: 0;
  text-decoration: underline;
}

/* Light/Inverted Button (white background) */
.button-light {
  --button-bg: var(--color-white);
  --button-bg-hover: var(--color-gray-100);
  --button-color: var(--color-text);
  --button-color-hover: var(--color-text);
  --button-border: var(--color-white);
  --button-border-hover: var(--color-gray-100);
}

/* Ghost Button (subtle light gray background) */
.button-ghost {
  --button-bg: var(--color-gray-100);
  --button-bg-hover: var(--color-gray-200);
  --button-color: var(--color-text);
  --button-color-hover: var(--color-text);
  --button-border: var(--color-gray-100);
  --button-border-hover: var(--color-gray-200);
}

/* ========================================
    SIZE MODIFIERS
    ======================================== */

.button-sm {
  --button-padding: var(--button-padding-sm);
  --button-height: var(--button-size-sm);
  --button-font-size: var(--button-font-size-sm);
  --button-icon-size: 16px;
}

.button-md {
  --button-padding: var(--button-padding-md);
  --button-height: var(--button-size-md);
  --button-font-size: var(--button-font-size-md);
  --button-icon-size: 20px;

  border-radius: var(--border-radius-20);
}

.button-lg {
  --button-padding: var(--button-padding-lg);
  --button-height: var(--button-size-lg);
  --button-font-size: var(--button-font-size-lg);
  --button-icon-size: 24px;
}

/* ========================================
    LAYOUT MODIFIERS
    ======================================== */

/* Full Width Button */
.button-full {
  width: 100%;
  display: flex;
}

/* Icon Button (button with icon + text) */
.button-icon {
  --button-padding: var(--spacing-sm);

  min-width: var(--button-height);
  aspect-ratio: 1;
  justify-content: center;
}

.button-icon.button-sm {
  --button-padding: var(--spacing-xs);

  min-width: var(--button-size-sm);
}

.button-icon.button-lg {
  --button-padding: var(--spacing-md);

  min-width: var(--button-size-lg);
}

/* Icon Only Button (circular icon button with no text) */
.button-icon-only {
  --button-padding: var(--spacing-sm);
  --button-border: transparent;

  min-width: var(--button-height);
  width: var(--button-height);
  height: var(--button-height);
  aspect-ratio: 1;
  border-radius: 50%;
  justify-content: center;
}

.button-icon-only.button-sm {
  min-width: var(--button-size-sm);
  width: var(--button-size-sm);
  height: var(--button-size-sm);
}

.button-icon-only.button-lg {
  min-width: var(--button-size-lg);
  width: var(--button-size-lg);
  height: var(--button-size-lg);
}

/* Icon Circle Button (circular icon button with shadow) */
.button-icon-circle {
  --button-padding: 0;
  --button-border: transparent;
  --button-bg: var(--spectrum-silver-100);
  --button-bg-hover: var(--spectrum-silver-100);
  --button-color: var(--color-text);
  --button-color-hover: var(--color-text);

  min-width: var(--button-height);
  width: var(--button-height);
  height: var(--button-height);
  aspect-ratio: 1;
  border-radius: 50%;
  justify-content: center;
}

.button-icon-circle.button-sm {
  min-width: var(--button-size-sm);
  width: var(--button-size-sm);
  height: var(--button-size-sm);
}

.button-icon-circle.button-lg {
  min-width: var(--button-size-lg);
  width: var(--button-size-lg);
  height: var(--button-size-lg);
}

/* ========================================
         ICON STYLING
         ======================================== */

.button svg,
.button img {
  width: var(--button-icon-size);
  height: var(--button-icon-size);
  flex-shrink: 0;
}

/* ========================================
         LOADING STATE
         ======================================== */

.button-loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.button-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid currentcolor;
  border-radius: 50%;
  border-top-color: transparent;
  animation: button-spin var(--spinner-duration) linear infinite;
  color: var(--color-white);
}

@keyframes button-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ========================================
    SPINNER UTILITY
    ======================================== */

/* Spinner loading indicator */
.spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  padding: var(--spacing-2xl);
}

.spinner.hidden {
  display: none;
}

.spinner::after {
  content: '';
  width: 32px;
  height: 32px;
  border: 4px solid var(--color-gray-300);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spinner-rotate var(--spinner-duration) linear infinite;
}

/* Unified spinner animation */
@keyframes spinner-rotate {
  to {
    transform: rotate(360deg);
  }
}

/* ========================================
    SHIMMER ANIMATION
    Reusable animation for skeleton loading states.
    ======================================== */

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

/* Generic skeleton styles - reusable across all blocks */

/* Base skeleton container - default layout for all blocks */
.skeleton {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* Card carousel skeleton */
.skeleton .skeleton-carousel {
  display: flex;
  gap: var(--spacing-lg);
  overflow: hidden;
}

.skeleton .skeleton-card {
  width: 100%;
  border-radius: var(--border-radius-lg);
  background: var(--color-gray-50);
  overflow: hidden;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* Card in carousel has fixed width */
.skeleton .skeleton-carousel .skeleton-card {
  flex: 0 0 auto;
  width: 250px;
  padding: 0;
}

.skeleton .skeleton-carousel .skeleton-img {
  height: 250px;
}

.skeleton .skeleton-carousel .skeleton-card > :not(.skeleton-img) {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.skeleton .skeleton-body {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.skeleton .skeleton-title {
  height: 24px;
  width: 80%;
  background: var(--color-gray-100);
  border-radius: var(--border-radius-sm);
}

.skeleton .skeleton-details {
  height: 16px;
  width: 60%;
  background: var(--color-gray-100);
  border-radius: var(--border-radius-sm);
}

/* List item skeleton */
.skeleton .skeleton-item {
  padding: var(--spacing-md);
  padding-bottom: var(--spacing-lg);
  background: var(--color-gray-50);
  border-radius: var(--border-radius-xl);
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.skeleton .skeleton-avatar {
  width: var(--icon-size-26);
  height: var(--icon-size-26);
  border-radius: var(--border-radius-circle);
  flex-shrink: 0;
  background-color: var(--color-gray-100);
}

.skeleton .skeleton-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  flex: 1;
}

.skeleton .skeleton-badge {
  width: 80px;
  height: 24px;
  background: var(--color-gray-100);
  border-radius: var(--border-radius-md);
  flex-shrink: 0;
}

/* Additional skeleton elements */
.skeleton .skeleton-description {
  height: 16px;
  width: 100%;
  background: var(--color-gray-100);
  border-radius: var(--border-radius-sm);
  margin-top: var(--spacing-sm);
}

.skeleton .skeleton-description:nth-child(3) {
  width: 80%;
}

.skeleton .skeleton-button {
  height: 36px;
  width: 120px;
  background: var(--color-gray-100);
  border-radius: var(--border-radius-md);
  margin-top: var(--spacing-md);
}

@media (width >= 900px) {
  .skeleton .skeleton-carousel .skeleton-card {
    width: 295px;
  }
}

/* Skeleton shimmer utility class - apply to skeleton elements for loading animation */
.skeleton.skeleton-shimmer .skeleton-card,
.skeleton.skeleton-shimmer .skeleton-item {
  background: var(--header-shimmer-gradient);
  background-size: 200% 100%;
  animation: shimmer 3s ease-in-out infinite;
}

/* ========================================
         BASE BADGE
         ======================================== */

.badge {
  /* Default variant (primary) properties - theme-independent */
  --badge-bg: var(--color-ti-blue-900);
  --badge-color: var(--color-ti-gray-25);
  --badge-border: var(--color-ti-blue-900);

  /* Size properties (defaults to medium) */
  --badge-height: var(--badge-height-md);
  --badge-padding-x: var(--badge-padding-x-md);
  --badge-font-size: var(--badge-font-size-sm);
  --badge-gap: var(--badge-gap-md);
  --badge-icon-size: var(--badge-icon-size-md);
  --badge-border-radius: var(--badge-border-radius-md);

  /* Layout */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--badge-gap);
  vertical-align: middle;

  /* Sizing */
  height: var(--badge-height);
  padding-left: var(--badge-padding-x);
  padding-right: var(--badge-padding-x);

  /* Typography */
  font-size: var(--badge-font-size);
  font-weight: var(--badge-font-weight);
  line-height: var(--line-height-tight);
  letter-spacing: var(--badge-letter-spacing);
  text-align: center;
  white-space: nowrap;

  /* Visual */
  border: var(--border-width-thin) solid var(--badge-border);
  border-radius: var(--badge-border-radius);
  background-color: var(--badge-bg);
  color: var(--badge-color);

  /* Effects */
  transition: all var(--transition-fast);
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Icon Sizing within Badges */
.badge svg,
.badge img {
  width: var(--badge-icon-size);
  height: var(--badge-icon-size);
  flex-shrink: 0;
}

.block-level-error picture img {
  max-width: 133px;
  max-height: 133px;
}

/* ========================================
         SEMANTIC VARIANTS
         ======================================== */

/* Primary - Blue badge for primary/selected states */
.badge-primary {
  --badge-bg: var(--color-ti-blue-900);
  --badge-color: var(--color-ti-gray-25);
  --badge-border: var(--color-ti-blue-900);
}

/* Info - Blue informational badge */
.badge-info {
  --badge-bg: var(--color-ti-blue-1300);
  --badge-color: var(--color-ti-gray-25);
  --badge-border: var(--color-ti-blue-1300);
}

/* Warning - Orange warning/alert badge */
.badge-warning {
  --badge-bg: var(--color-ti-orange-1400);
  --badge-color: var(--color-ti-orange-900);
  --badge-border: var(--color-ti-orange-1400);
}

/* Danger - Red error/critical badge */
.badge-danger {
  --badge-bg: var(--color-ti-red-1400);
  --badge-color: var(--color-ti-red-800);
  --badge-border: var(--color-ti-red-1400);
}

/* Neutral - Gray neutral/default badge */
.badge-neutral {
  --badge-bg: var(--color-ti-gray-200);
  --badge-color: var(--color-ti-gray-800);
  --badge-border: var(--color-ti-gray-200);
}

/* Yellow - yellow badge for "Not started" items */
.badge-yellow,
.badge-not-started {
  --badge-bg: var(--color-ti-yellow-400);
  --badge-color: var(--color-ti-gray-1000);
  --badge-border: 0;
  --badge-border-radius: var(--border-radius-xl);

  padding: var(--spacing-sm) var(--spacing-md);
}

/* Success - Green success/completed badge */
.badge-success,
.badge-completed {
  --badge-bg: var(--color-ti-green-900);
  --badge-color: var(--color-ti-gray-25);
  --badge-border: 0;
  --badge-border-radius: var(--border-radius-xl);

  padding: var(--spacing-sm) var(--spacing-md);
}

/* Purple - Purple/Magenta badge for "In Progress" */
.badge-purple,
.badge-in-progress {
  --badge-bg: var(--color-ti-fuchsia-500);
  --badge-color: var(--color-ti-gray-900);
  --badge-border: 0;
  --badge-border-radius: var(--border-radius-xl);

  padding: var(--spacing-sm) var(--spacing-md);
}

/* Dark - Dark gray badge with white text for "Doc" and other dark badges */
.badge-dark {
  --badge-bg: var(--color-ti-gray-800);
  --badge-color: var(--color-ti-gray-25);
  --badge-border: var(--color-ti-gray-800);
}

/* Black - Black badge with white text for maximum contrast */
.badge-black {
  --badge-bg: var(--color-ti-gray-1000);
  --badge-color: var(--color-ti-gray-25);
  --badge-border: var(--color-ti-gray-1000);
}

/* White - White badge with black text, for use on dark/image backgrounds */
.badge-white {
  --badge-bg: var(--color-ti-gray-25);
  --badge-color: var(--color-ti-gray-1000);
  --badge-border: var(--color-ti-gray-25);
}

/* ========================================
         OUTLINED MODIFIER
         ======================================== */

/* Outlined - Transparent background, inherits border and text color from variant */
.badge-outlined {
  --badge-bg: transparent;
}

/* ========================================
         SIZE MODIFIERS
         ======================================== */

/* Extra Small Badge - 20px height */
.badge-xs {
  --badge-height: var(--badge-height-xs);
  --badge-padding-x: var(--badge-padding-x-xs);
  --badge-font-size: var(--badge-font-size-2xs);
  --badge-gap: var(--badge-gap-xs);
  --badge-icon-size: var(--badge-icon-size-xs);
  --badge-border-radius: var(--badge-border-radius-sm);
}

/* Small Badge - 24px height */
.badge-sm {
  --badge-height: var(--badge-height-sm);
  --badge-padding-x: var(--badge-padding-x-sm);
  --badge-font-size: var(--badge-font-size-xs);
  --badge-gap: var(--badge-gap-sm);
  --badge-icon-size: var(--badge-icon-size-sm);
}

/* Medium Badge (Default) - 32px height */
.badge-md {
  --badge-height: var(--badge-height-md);
  --badge-padding-x: var(--badge-padding-x-md);
  --badge-font-size: var(--badge-font-size-md);
  --badge-gap: var(--badge-gap-md);
  --badge-icon-size: var(--badge-icon-size-md);
}

/* Large Badge - 40px height */
.badge-lg {
  --badge-height: var(--badge-height-lg);
  --badge-padding-x: var(--badge-padding-x-lg);
  --badge-font-size: var(--badge-font-size-md);
  --badge-gap: var(--badge-gap-lg);
  --badge-icon-size: var(--badge-icon-size-lg);
  --badge-border-radius: var(--badge-border-radius-lg);
}

/* ========================================
         SHAPE MODIFIERS
         ======================================== */

/* Pill - Fully rounded ends */
.badge-pill {
  --badge-padding-x: var(--spacing-md);
  --badge-border-radius: var(--border-radius-full);
}

/* Icon Badge - Badge with icon and text */
.badge-icon {
  --badge-gap: var(--spacing-xs);
}

/* Icon-only Badge - Circular badge with icon only */
.badge-icon-only {
  --badge-border-radius: var(--border-radius-circle);
  --badge-padding-x: 0;

  width: var(--badge-height);
  aspect-ratio: 1;
}

/* ========================================
         INTERACTIVE BADGE PATTERN
         ======================================== */

/* 
       * When badges are wrapped in buttons for interactivity,
       * remove button styling conflicts
       */
.button > .badge {
  pointer-events: none; /* Badge itself isn't clickable, parent button handles interaction */
}

/* Ensure badge maintains its styles when inside a button */
.button:hover > .badge,
.button:focus-visible > .badge {
  transform: none; /* Prevent badge from transforming when button transforms */
}

/* ========================================
         ACCESSIBILITY & RESPONSIVE DESIGN
         ======================================== */

/* 
    * For icon-only badges, ensure aria-label is present on parent
    * Example: <button aria-label="Mark as complete"><span class="badge badge-success badge-icon-only"><svg>...</svg></span></button>
    */

/* ========================================
      SECTION METADATA - Authorable Options
      ======================================== */

/* Top Spacing */
.section[data-top-spacing='md'] {
  padding-top: var(--spacing-md);
}

.section[data-top-spacing='xl'] {
  padding-top: var(--spacing-xl);
}

.section[data-top-spacing='3xl'] {
  padding-top: var(--spacing-3xl);
}

/* Bottom Spacing */
.section[data-bottom-spacing='md'] {
  padding-bottom: var(--spacing-md);
}

.section[data-bottom-spacing='xl'] {
  padding-bottom: var(--spacing-xl);
}

.section[data-bottom-spacing='3xl'] {
  padding-bottom: var(--spacing-3xl);
}

/* Background Colors */
.section[data-background-color='white'] {
  background-color: var(--color-white);
}

.section[data-background-color='gray-50'] {
  background-color: var(--color-gray-50);
}

.section[data-background-color='gray-100'] {
  background-color: var(--color-gray-100);
}

.section[data-background-color='gray-200'] {
  background-color: var(--color-gray-200);
}

/* Border Radius */
.section[data-border-radius='sm'] {
  border-radius: var(--border-radius-sm);
}

.section[data-border-radius='md'] {
  border-radius: var(--border-radius-md);
}

.section[data-border-radius='lg'] {
  border-radius: var(--border-radius-lg);
}

/* Box Shadows */
.section[data-box-shadow='sm'] {
  box-shadow: var(--shadow-sm);
}

.section[data-box-shadow='md'] {
  box-shadow: var(--shadow-md);
}

/* ========================================
      SECTION LAYOUT - Column Layouts (Mobile First)
      ======================================== */

/* Mobile: Single column by default */
.section[data-layout-columns] {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

/* Desktop: Multi-column layouts */
@media (width > 1200px) {
  .section[data-layout-columns] {
    gap: var(--spacing-xl);
  }

  /* 2 Columns - Equal (50/50) */
  .section[data-layout-columns='2-col-50-50'] {
    grid-template-columns: 1fr 1fr;
  }

  /* 2 Columns - Wide Left (65/35) */
  .section[data-layout-columns='2-col-65-35'] {
    grid-template-columns: 65fr 35fr;
  }

  /* 2 Columns - Wide Right (35/65) */
  .section[data-layout-columns='2-col-35-65'] {
    grid-template-columns: 35fr 65fr;
  }

  /* 3 Columns - Equal (33/33/33) */
  .section[data-layout-columns='3-col-equal'] {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

/* ========================================
    DARK MODE - Icon Filters
    ======================================== */

/* Apply filters to icons in dark mode */
.spectrum--dark .icon img,
.spectrum--dark .icon img[src*='.svg'] {
  filter: invert(1);
  transition: filter var(--transition-fast);
}

/* Icons that remain independent of theme (e.g., logos, brand colors, multi-colored icons) */
.spectrum--dark .icon.theme-independent img,
.spectrum--dark .icon.theme-independent img[src*='.svg'],
.spectrum--dark .badge .icon img,
.spectrum--dark .badge .icon img[src*='.svg'] {
  filter: none;
}

/* Course card icons and tags remain same across themes */
.spectrum--dark .course-card-content .icon img {
  filter: none;
}

.spectrum--dark .carousel-nav-button,
.spectrum--dark .carousel-nav-button:hover,
.spectrum--dark .carousel-nav-button:focus {
  background: var(--color-gray-100);
}

/* HEADER styles override */

.spectrum--dark exl-header {
  /* ---- Header dark mode color tokens ---- */
  --header-dark-bg: #1e1e1e; /* Primary page/header background */
  --header-dark-surface: #272727; /* Surface / panel background */
  --header-dark-surface-elevated: #3c3c3c; /* Slightly elevated surface (silver mist) */
  --header-dark-text-primary: #fff; /* Primary text / icon color */
  --header-dark-text-inverted: #000; /* Inverted (used where --color-white maps to black) */
  --header-dark-text-secondary: #e8e8e8; /* Secondary / muted text color */

  /* ---- Apply tokens ---- */
  --background-color: var(--header-dark-bg);
  --nav-item-text-color: var(--header-dark-text-primary);
  --color-white: var(--header-dark-text-inverted);
  --spectrum-gray-800: var(--header-dark-text-secondary);
  --spectrum-gray-200: var(--color-gray-50);
  --hover-backgroud: var(--color-gray-50);
  --hover-background-dark: var(--color-gray-50);
  --nav-item-expanded-bg: var(--color-gray-50);
  --text-color: var(--header-dark-text-primary);
  --non-spectrum-article-dark-gray: var(--header-dark-text-secondary);
  --non-spectrum-bg: var(--header-dark-surface);
  --non-spectrum-hover-bg: var(--color-gray-50);
  --spectrum-gray-100: var(--header-dark-surface);
  --non-spectrum-charcoal-gray: var(--header-dark-text-secondary);
  --hover-item-content-background: var(--header-dark-surface);
  --non-spectrum-silver-mist: var(--header-dark-surface-elevated);
}

.spectrum--dark exl-header .search-input {
  --color-white: var(--header-dark-surface);
}

.header-skeleton {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
  background-color: var(--color-white);
}

.header-skeleton-container {
  max-width: 1440px;
  display: flex;
  justify-content: space-between;
  width: 100%;
}

.header-skeleton-left,
.header-skeleton-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-skeleton-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 15px;
}

.skeleton-block {
  background: var(--header-shimmer-gradient);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite ease-in-out;
  border-radius: 4px;
  flex: 0 0 auto;
}

.skeleton-logo {
  width: 24px;
  height: 24px;
}

.skeleton-brand {
  width: 180px;
  height: 16px;
}

.skeleton-nav-item {
  width: 65px;
  height: 14px;
}

.skeleton-nav-item-wide {
  width: 90px;
}

.skeleton-signin {
  width: 70px;
  height: 32px;
  border-radius: 16px;
}

.skeleton-search {
  width: 24px;
  height: 24px;
  margin-left: 15px;
}

.skeleton-globe {
  width: 24px;
  height: 24px;
  border-radius: 50%;
}

/* Responsive */
.header-skeleton .mobile-hidden {
  display: none;
}

@media (width >= 1024px) {
  .header-skeleton .mobile-hidden {
    display: flex;
  }

  .skeleton-search {
    width: 192px;
    height: 32px;
  }
}

header:has(exl-header) .header-skeleton {
  display: none;
}

.auth-failure-modal .modal-close-button {
  display: none;
}

.auth-failure-modal {
  border: none;
  background: var(--color-white);
  border-radius: var(--modal-border-radius);
  box-shadow: var(--shadow-3xl);
  padding: var(--modal-padding);
}

.auth-failure-modal-content h2 {
  font-size: var(--heading-font-size-lg);
  font-weight: var(--font-weight-extrabold);
  margin: 0 0 var(--spacing-lg);
}

.auth-failure-modal-content p {
  color: var(--color-gray-700);
  margin: 0 0 var(--spacing-lg);
  font-size: var(--font-size-min-xl);
}

.auth-failure-modal::backdrop {
  background: var(--modal-backdrop-bg);
  backdrop-filter: blur(var(--modal-backdrop-blur));
}

@media (width >= 900px) {
  .auth-failure-modal {
    padding: var(--spacing-2xl);
    min-width: 500px;
  }
}