/* ==========================================================================
   Club E Design System
   Version: 2.0.0
   Brand: #81B4B1 (teal) + white + black
   Framework: 9-Stage Entrepreneurial Journey
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. THEME VARIABLES
   -------------------------------------------------------------------------- */

:root {
  /* --- Teal Scale (derived from #81B4B1) --- */
  --teal-50:         #EDF5F4;
  --teal-100:        #D6E9E8;
  --teal-200:        #B8D8D6;
  --teal-300:        #A8CCC9;
  --teal-400:        #93C2BF;
  --teal-500:        #81B4B1;
  --teal-600:        #6DA19E;
  --teal-700:        #5E9390;
  --teal-800:        #4A7573;
  --teal-900:        #3D706E;

  /* --- Neutral Scale --- */
  --neutral-50:      #F7F9F9;
  --neutral-100:     #EDF2F1;
  --neutral-200:     #E2E8F0;
  --neutral-300:     #CBD5E0;
  --neutral-400:     #A0AEC0;
  --neutral-500:     #718096;
  --neutral-600:     #4A5568;
  --neutral-700:     #2D3748;
  --neutral-800:     #1A202C;
  --neutral-900:     #1A1A1A;

  /* --- Semantic Aliases --- */
  --bg-primary:      #FFFFFF;
  --bg-secondary:    var(--neutral-50);
  --bg-tertiary:     var(--neutral-100);
  --text-primary:    var(--neutral-900);
  --text-secondary:  var(--neutral-600);
  --text-muted:      var(--neutral-500);
  --border-color:    var(--neutral-200);
  --border-strong:   var(--neutral-300);

  --color-primary:       var(--teal-500);
  --color-primary-hover: var(--teal-600);
  --color-primary-active:var(--teal-700);
  --color-surface:       var(--bg-primary);
  --color-surface-alt:   var(--bg-secondary);
  --color-on-primary:    #FFFFFF;

  /* --- Semantic Status Colors --- */
  --color-success:     #059669;
  --color-success-bg:  #D1FAE5;
  --color-warning:     #D97706;
  --color-warning-bg:  #FEF3C7;
  --color-error:       #DC2626;
  --color-error-bg:    #FEE2E2;
  --color-info:        #2563EB;
  --color-info-bg:     #DBEAFE;

  /* --- Journey Phase Tints --- */
  --phase-creation-bg:     var(--teal-50);         /* #EDF5F4 */
  --phase-creation-accent:  var(--teal-500);        /* #81B4B1 */
  --phase-creation-border:  var(--teal-300);        /* #A8CCC9 */

  --phase-optimization-bg:     #F0F4F1;
  --phase-optimization-accent:  var(--teal-600);    /* #6DA19E */
  --phase-optimization-border:  #B5C9BE;

  --phase-legacy-bg:       #E8F0EE;
  --phase-legacy-accent:    var(--teal-800);        /* #4A7573 */
  --phase-legacy-border:    #8FADA7;

  /* --- Stage Badge Opacity Scale (teal at varying intensity) --- */
  --stage-1-bg: rgba(129, 180, 177, 0.12);
  --stage-2-bg: rgba(129, 180, 177, 0.20);
  --stage-3-bg: rgba(129, 180, 177, 0.30);
  --stage-4-bg: rgba(129, 180, 177, 0.40);
  --stage-5-bg: rgba(129, 180, 177, 0.52);
  --stage-6-bg: rgba(129, 180, 177, 0.64);
  --stage-7-bg: rgba(129, 180, 177, 0.76);
  --stage-8-bg: rgba(129, 180, 177, 0.88);
  --stage-9-bg: rgba(129, 180, 177, 1.0);

  --stage-text-light: var(--neutral-900);  /* stages 1-5 */
  --stage-text-dark:  #FFFFFF;             /* stages 6-9 */

  /* --- Typography --- */
  --font-heading:    'DM Serif Display', Georgia, 'Times New Roman', serif;
  --font-body:       'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:       'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  --text-xs:    0.75rem;     /* 12px */
  --text-sm:    0.875rem;    /* 14px */
  --text-base:  1rem;        /* 16px */
  --text-lg:    1.125rem;    /* 18px */
  --text-xl:    1.25rem;     /* 20px */
  --text-2xl:   1.5rem;      /* 24px */
  --text-3xl:   1.875rem;    /* 30px */
  --text-4xl:   2.25rem;     /* 36px */
  --text-5xl:   3rem;        /* 48px */

  --leading-tight:   1.2;
  --leading-snug:    1.375;
  --leading-normal:  1.5;
  --leading-relaxed: 1.625;
  --leading-loose:   1.75;

  --weight-normal:   400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;

  /* --- Spacing Scale (4px base) --- */
  --space-0:   0;
  --space-1:   0.25rem;   /*  4px */
  --space-2:   0.5rem;    /*  8px */
  --space-3:   0.75rem;   /* 12px */
  --space-4:   1rem;      /* 16px */
  --space-5:   1.25rem;   /* 20px */
  --space-6:   1.5rem;    /* 24px */
  --space-8:   2rem;      /* 32px */
  --space-10:  2.5rem;    /* 40px */
  --space-12:  3rem;      /* 48px */
  --space-16:  4rem;      /* 64px */
  --space-20:  5rem;      /* 80px */
  --space-24:  6rem;      /* 96px */

  /* --- Layout --- */
  --container-sm:  640px;
  --container-md:  768px;
  --container-lg:  1024px;
  --container-xl:  1200px;
  --container-2xl: 1400px;

  /* --- Border Radius --- */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-2xl:  24px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-sm:   0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md:   0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg:   0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-xl:   0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);

  /* --- Transitions --- */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   350ms ease;
  --transition-theme:  300ms ease;
}


/* --------------------------------------------------------------------------
   2. DARK THEME
   -------------------------------------------------------------------------- */

[data-theme="dark"] {
  --bg-primary:      #121212;
  --bg-secondary:    #1E1E1E;
  --bg-tertiary:     #2A2A2A;
  --text-primary:    #F0F0F0;
  --text-secondary:  #B0B0B0;
  --text-muted:      #808080;
  --border-color:    #333333;
  --border-strong:   #444444;

  --color-surface:     var(--bg-primary);
  --color-surface-alt: var(--bg-secondary);

  /* Journey phase tints in dark mode */
  --phase-creation-bg:     #1A2422;
  --phase-optimization-bg: #1E2320;
  --phase-legacy-bg:       #1A211F;

  --shadow-sm:   0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md:   0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg:   0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl:   0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary:      #121212;
    --bg-secondary:    #1E1E1E;
    --bg-tertiary:     #2A2A2A;
    --text-primary:    #F0F0F0;
    --text-secondary:  #B0B0B0;
    --text-muted:      #808080;
    --border-color:    #333333;
    --border-strong:   #444444;

    --color-surface:     var(--bg-primary);
    --color-surface-alt: var(--bg-secondary);

    --phase-creation-bg:     #1A2422;
    --phase-optimization-bg: #1E2320;
    --phase-legacy-bg:       #1A211F;

    --shadow-sm:   0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md:   0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg:   0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl:   0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
  }
}


/* --------------------------------------------------------------------------
   3. BASE RESET & TYPOGRAPHY
   -------------------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-theme),
              color var(--transition-theme);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--weight-normal); /* DM Serif Display is only 400 */
  line-height: var(--leading-tight);
  color: var(--text-primary);
}

h1, .text-h1 { font-size: var(--text-5xl); margin-bottom: var(--space-6); }
h2, .text-h2 { font-size: var(--text-4xl); margin-bottom: var(--space-5); }
h3, .text-h3 { font-size: var(--text-3xl); margin-bottom: var(--space-4); }
h4, .text-h4 { font-size: var(--text-2xl); margin-bottom: var(--space-3); }
h5, .text-h5 { font-size: var(--text-xl);  margin-bottom: var(--space-3); }
h6, .text-h6 { font-size: var(--text-lg);  margin-bottom: var(--space-2); }

p {
  margin-bottom: var(--space-4);
  line-height: var(--leading-relaxed);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* Mobile typography scaling */
@media (max-width: 768px) {
  h1, .text-h1 { font-size: var(--text-3xl); }
  h2, .text-h2 { font-size: var(--text-2xl); }
  h3, .text-h3 { font-size: var(--text-xl);  }
  h4, .text-h4 { font-size: var(--text-lg);  }
}


/* --------------------------------------------------------------------------
   4. LAYOUT SYSTEM
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.container--narrow { max-width: var(--container-md); }
.container--wide   { max-width: var(--container-2xl); }

/* Section spacing */
.section {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.section--sm {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.section--lg {
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
}

.section--alt {
  background-color: var(--bg-secondary);
}

/* Phase-themed sections */
.section--creation     { background-color: var(--phase-creation-bg); }
.section--optimization { background-color: var(--phase-optimization-bg); }
.section--legacy       { background-color: var(--phase-legacy-bg); }

@media (max-width: 768px) {
  .section    { padding-top: var(--space-12); padding-bottom: var(--space-12); }
  .section--lg { padding-top: var(--space-16); padding-bottom: var(--space-16); }
}

/* Grid system */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--5 { grid-template-columns: repeat(5, 1fr); }

.grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--5 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .grid--5 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }
  .grid--5 { grid-template-columns: repeat(2, 1fr); }
}

/* Flexbox utilities */
.flex       { display: flex; }
.flex-col   { flex-direction: column; }
.flex-wrap  { flex-wrap: wrap; }
.items-center   { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }


/* --------------------------------------------------------------------------
   5. COMPONENTS — BUTTONS
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: 1;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  min-height: 44px; /* WCAG touch target */
}

.btn:hover { text-decoration: none; }

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-on-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--primary:active {
  background-color: var(--color-primary-active);
  border-color: var(--color-primary-active);
  transform: translateY(0);
}

.btn--secondary {
  background-color: var(--neutral-900);
  color: #FFFFFF;
  border-color: var(--neutral-900);
}

.btn--secondary:hover {
  background-color: var(--neutral-700);
  border-color: var(--neutral-700);
  color: #FFFFFF;
}

.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}

.btn--ghost {
  background-color: transparent;
  color: var(--text-primary);
  border-color: transparent;
}

.btn--ghost:hover {
  background-color: var(--bg-tertiary);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  min-height: 52px;
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  min-height: 36px;
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}


/* --------------------------------------------------------------------------
   6. COMPONENTS — BASE CARDS
   -------------------------------------------------------------------------- */

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-base),
              transform var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.card__body {
  padding: var(--space-5);
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.card__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
  line-height: var(--leading-snug);
}

.card__title a {
  color: inherit;
  text-decoration: none;
}

.card__title a:hover {
  color: var(--color-primary);
}

.card__excerpt {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-color);
}

.card__stages {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.card__read-time {
  white-space: nowrap;
}

.card__read-time::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background-color: var(--text-muted);
  vertical-align: middle;
  margin-right: var(--space-2);
}


/* --------------------------------------------------------------------------
   7. COMPONENTS — CONTENT TYPE CARDS
   -------------------------------------------------------------------------- */

/* --- Blog Card --- */
.card--blog .card__footer {
  border-top: none;
  padding-top: 0;
}

/* --- Podcast Card --- */
.card--podcast {
  display: grid;
  grid-template-columns: 200px 1fr;
}

.card--podcast .card__image {
  aspect-ratio: 1 / 1;
  height: 100%;
}

.card--podcast__media {
  position: relative;
  overflow: hidden;
}

.card--podcast__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  transition: all var(--transition-fast);
  opacity: 0.9;
}

.card--podcast__play:hover {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.1);
}

.card--podcast .card__guest {
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-style: italic;
}

@media (max-width: 640px) {
  .card--podcast {
    grid-template-columns: 1fr;
  }
  .card--podcast .card__image {
    aspect-ratio: 16 / 9;
    height: auto;
  }
}

/* --- Course Card --- */
.card--course .card__course-meta {
  display: flex;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.card--course .card__course-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.card--course .card__difficulty {
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
}

.card__progress {
  height: 6px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-4);
}

.card__progress-bar {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

/* --- Event Card --- */
.card--event {
  display: grid;
  grid-template-columns: 90px 1fr;
}

.card--event__date-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}

.card--event__month {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.85;
}

.card--event__day {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  line-height: 1;
}

.card--event .card__event-details {
  display: flex;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.card--event .card__event-details span {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

@media (max-width: 640px) {
  .card--event {
    grid-template-columns: 1fr;
  }
  .card--event__date-block {
    flex-direction: row;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
  }
}

/* --- Resource Card --- */
.card--resource {
  border-left: 4px solid var(--color-primary);
}

.card--resource .card__filetype {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  background-color: var(--bg-tertiary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.card--resource .card__resource-meta {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.card--resource .card__resource-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* --- Glossary Card --- */
.card--glossary {
  border-left: 3px solid var(--teal-300);
}

.card--glossary:hover {
  transform: none;
}

.card--glossary .card__title {
  font-size: var(--text-lg);
}

.card--glossary .card__definition {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
}

/* --- Video Card --- */
.card--video__media {
  position: relative;
}

.card--video__duration {
  position: absolute;
  bottom: var(--space-2);
  right: var(--space-2);
  background-color: rgba(0, 0, 0, 0.8);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.card--video__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 56px;
  color: rgba(255, 255, 255, 0.9);
  background: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
}

.card--video__play:hover {
  color: #FFFFFF;
  transform: translate(-50%, -50%) scale(1.1);
}


/* --------------------------------------------------------------------------
   8. COMPONENTS — USER TYPE SELECTOR
   -------------------------------------------------------------------------- */

.user-selector__grid {
  margin-top: var(--space-8);
}

.user-selector__card {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  cursor: pointer;
  border: 2px solid var(--border-color);
  background: var(--color-surface);
  transition: all var(--transition-base);
}

.user-selector__card:hover,
.user-selector__card[aria-pressed="true"] {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(129, 180, 177, 0.15);
}

.user-selector__card[aria-pressed="true"] {
  background-color: var(--teal-50);
}

.user-selector__card .card__icon {
  font-size: 2.5rem;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  display: block;
}

.user-selector__card .card__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.user-selector__card .card__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: 0;
}


/* --------------------------------------------------------------------------
   9. COMPONENTS — MEMBERSHIP TIER CARDS
   -------------------------------------------------------------------------- */

.tier-grid {
  align-items: stretch;
}

.tier-card {
  background-color: var(--color-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-base);
}

.tier-card:hover {
  box-shadow: var(--shadow-lg);
}

.tier-card--featured {
  border-color: var(--color-primary);
  border-width: 2px;
  box-shadow: var(--shadow-lg);
  transform: scale(1.03);
  z-index: 1;
}

.tier-card--featured:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-xl);
}

.tier-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.tier-card__header {
  text-align: center;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border-color);
}

.tier-card__name {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}

.tier-card__price {
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
}

.tier-card__price span {
  font-size: var(--text-lg);
  font-weight: var(--weight-normal);
  color: var(--text-muted);
}

.tier-card__billing {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.tier-card__features {
  list-style: none;
  margin-bottom: var(--space-8);
  flex-grow: 1;
}

.tier-card__features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  font-size: var(--text-base);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

.tier-card__features li:last-child {
  border-bottom: none;
}

.tier-card__features li i {
  flex-shrink: 0;
  margin-top: 2px;
  font-size: var(--text-lg);
}

.tier-card__features li .ph-check {
  color: var(--color-success);
}

.tier-card__features li .ph-x {
  color: var(--text-muted);
}

.tier-card__feature--disabled {
  color: var(--text-muted) !important;
  text-decoration: line-through;
  opacity: 0.6;
}

.tier-card .btn {
  width: 100%;
}

@media (max-width: 1024px) {
  .tier-card--featured {
    transform: none;
  }
  .tier-card--featured:hover {
    transform: translateY(-2px);
  }
}

@media (max-width: 768px) {
  .tier-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }
}


/* --------------------------------------------------------------------------
   10. COMPONENTS — ASSESSMENT TEASER
   -------------------------------------------------------------------------- */

.assessment-teaser {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
  padding: var(--space-12) var(--space-8);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
}

.assessment-teaser__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

/* CSS-only radar chart placeholder */
.assessment-teaser__radar {
  width: 240px;
  height: 240px;
  position: relative;
}

.assessment-teaser__radar::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    conic-gradient(
      from 0deg,
      rgba(129, 180, 177, 0.2) 0deg,
      rgba(129, 180, 177, 0.4) 45deg,
      rgba(129, 180, 177, 0.6) 90deg,
      rgba(129, 180, 177, 0.3) 135deg,
      rgba(129, 180, 177, 0.7) 180deg,
      rgba(129, 180, 177, 0.5) 225deg,
      rgba(129, 180, 177, 0.35) 270deg,
      rgba(129, 180, 177, 0.55) 315deg,
      rgba(129, 180, 177, 0.2) 360deg
    );
  clip-path: polygon(50% 0%, 85% 15%, 100% 50%, 85% 85%, 50% 100%, 15% 85%, 0% 50%, 15% 15%);
  border-radius: 50%;
}

.assessment-teaser__blur-overlay {
  position: absolute;
  inset: 0;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  background: rgba(255, 255, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
}

.assessment-teaser__blur-overlay::after {
  content: "Take the assessment to unlock";
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--text-secondary);
  background: var(--color-surface);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

.assessment-teaser__content h3 {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  margin-bottom: var(--space-3);
}

.assessment-teaser__content p {
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

.assessment-teaser__metrics {
  list-style: none;
  margin-bottom: var(--space-6);
}

.assessment-teaser__metrics li {
  padding: var(--space-2) 0;
  font-size: var(--text-base);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.assessment-teaser__metrics li::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-primary);
  flex-shrink: 0;
}

.assessment-teaser__metrics li:last-child {
  color: var(--text-muted);
  font-style: italic;
}

.assessment-teaser__metrics li:last-child::before {
  background-color: var(--neutral-300);
}

@media (max-width: 768px) {
  .assessment-teaser {
    grid-template-columns: 1fr;
    padding: var(--space-8) var(--space-6);
  }
  .assessment-teaser__visual {
    min-height: 200px;
  }
}


/* --------------------------------------------------------------------------
   11. COMPONENTS — METRIC DISPLAYS
   -------------------------------------------------------------------------- */

/* --- Metric Score Preview --- */

.metric-preview {
  padding: var(--space-5);
  background-color: var(--color-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition-base);
}

.metric-preview:hover {
  box-shadow: var(--shadow-md);
}

.metric-preview__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.metric-preview__header i {
  font-size: var(--text-2xl);
  color: var(--color-primary);
}

.metric-preview__name {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  margin-bottom: 0;
}

.metric-preview__tm {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-left: auto;
}

.metric-preview__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.metric-preview__score-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.metric-preview__track {
  flex-grow: 1;
  height: 8px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.metric-preview__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--teal-400), var(--teal-600));
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}

.metric-preview__value {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  min-width: 36px;
  text-align: right;
}


/* --- ECI Score Ring --- */

.eci-display {
  display: flex;
  align-items: center;
  justify-content: center;
}

.eci-display__ring {
  position: relative;
  width: 140px;
  height: 140px;
}

.eci-display__svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.eci-display__track {
  fill: none;
  stroke: var(--bg-tertiary);
  stroke-width: 8;
}

.eci-display__progress {
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 1.5s ease-out;
}

.eci-display__value {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.eci-display__number {
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  display: block;
  line-height: 1;
}

.eci-display__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}


/* --- Stat Card --- */

.stat-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5);
  background-color: var(--color-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.stat-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background-color: var(--teal-50);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  color: var(--color-primary);
  flex-shrink: 0;
}

.stat-card__value {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  display: block;
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat-card__label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  display: block;
  margin-bottom: var(--space-1);
}

.stat-card__trend {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.stat-card__trend--up   { color: var(--color-success); }
.stat-card__trend--down { color: var(--color-error); }


/* --------------------------------------------------------------------------
   12. COMPONENTS — BADGES
   -------------------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  line-height: 1.4;
}

/* Content type badges */
.badge--blog     { background-color: #FEF3C7; color: #92400E; }
.badge--podcast  { background-color: #EDE9FE; color: #5B21B6; }
.badge--course   { background-color: #DBEAFE; color: #1E40AF; }
.badge--event    { background-color: #FCE7F3; color: #9D174D; }
.badge--glossary { background-color: #E0E7FF; color: #3730A3; }
.badge--resource { background-color: #D1FAE5; color: #065F46; }
.badge--video    { background-color: #FEE2E2; color: #991B1B; }

[data-theme="dark"] .badge--blog     { background-color: #451A03; color: #FDE68A; }
[data-theme="dark"] .badge--podcast  { background-color: #2E1065; color: #C4B5FD; }
[data-theme="dark"] .badge--course   { background-color: #172554; color: #93C5FD; }
[data-theme="dark"] .badge--event    { background-color: #500724; color: #F9A8D4; }
[data-theme="dark"] .badge--glossary { background-color: #1E1B4B; color: #A5B4FC; }
[data-theme="dark"] .badge--resource { background-color: #064E3B; color: #6EE7B7; }
[data-theme="dark"] .badge--video    { background-color: #450A0A; color: #FCA5A5; }

/* Stage badges (progressive teal intensity) */
.badge--stage-1 { background-color: var(--stage-1-bg); color: var(--stage-text-light); }
.badge--stage-2 { background-color: var(--stage-2-bg); color: var(--stage-text-light); }
.badge--stage-3 { background-color: var(--stage-3-bg); color: var(--stage-text-light); }
.badge--stage-4 { background-color: var(--stage-4-bg); color: var(--stage-text-light); }
.badge--stage-5 { background-color: var(--stage-5-bg); color: var(--stage-text-light); }
.badge--stage-6 { background-color: var(--stage-6-bg); color: var(--stage-text-dark); }
.badge--stage-7 { background-color: var(--stage-7-bg); color: var(--stage-text-dark); }
.badge--stage-8 { background-color: var(--stage-8-bg); color: var(--stage-text-dark); }
.badge--stage-9 { background-color: var(--stage-9-bg); color: var(--stage-text-dark); }

/* Phase badges */
.badge--creation     { background-color: var(--phase-creation-bg);     color: var(--phase-creation-accent);     border: 1px solid var(--phase-creation-border); }
.badge--optimization { background-color: var(--phase-optimization-bg); color: var(--phase-optimization-accent); border: 1px solid var(--phase-optimization-border); }
.badge--legacy       { background-color: var(--phase-legacy-bg);       color: var(--phase-legacy-accent);       border: 1px solid var(--phase-legacy-border); }


/* --------------------------------------------------------------------------
   13. COMPONENTS — JOURNEY VISUALIZATION
   -------------------------------------------------------------------------- */

.journey-viz {
  display: flex;
  align-items: flex-start;
  gap: 0;
  padding: var(--space-8) var(--space-4);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.journey-viz::-webkit-scrollbar {
  height: 4px;
}

.journey-viz::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
}

.journey-viz::-webkit-scrollbar-thumb {
  background: var(--neutral-300);
  border-radius: var(--radius-full);
}

.journey-viz__phase {
  flex: 1;
  min-width: 0;
  padding: var(--space-6) var(--space-4);
  border-radius: var(--radius-xl);
  position: relative;
}

.journey-viz__phase--creation     { background-color: var(--phase-creation-bg); }
.journey-viz__phase--optimization { background-color: var(--phase-optimization-bg); }
.journey-viz__phase--legacy       { background-color: var(--phase-legacy-bg); }

.journey-viz__phase-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: var(--space-5);
}

.journey-viz__stages {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.journey-viz__stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  padding: var(--space-2);
  min-width: 80px;
}

.journey-viz__stage:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.journey-viz__node {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-surface);
  border: 2px solid var(--border-color);
  font-size: var(--text-xl);
  transition: all var(--transition-fast);
  color: var(--text-muted);
}

.journey-viz__stage:hover .journey-viz__node {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.journey-viz__stage--active .journey-viz__node {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: 0 0 0 4px rgba(129, 180, 177, 0.2);
}

.journey-viz__stage--completed .journey-viz__node {
  background-color: var(--teal-100);
  border-color: var(--teal-300);
  color: var(--teal-700);
}

.journey-viz__name {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-align: center;
  max-width: 90px;
  line-height: var(--leading-snug);
}

.journey-viz__connector {
  width: 24px;
  height: 2px;
  background-color: var(--border-color);
  flex-shrink: 0;
}

.journey-viz__phase-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6) var(--space-2) 0;
  color: var(--neutral-400);
  font-size: var(--text-xl);
  flex-shrink: 0;
}

/* Tablet: stacked rows */
@media (max-width: 1024px) {
  .journey-viz {
    flex-direction: column;
    gap: var(--space-4);
  }
  .journey-viz__phase-connector {
    padding: 0;
    transform: rotate(90deg);
  }
}

/* Mobile: vertical timeline */
@media (max-width: 640px) {
  .journey-viz__stages {
    flex-direction: column;
    align-items: flex-start;
  }
  .journey-viz__stage {
    flex-direction: row;
    min-width: 0;
    width: 100%;
    gap: var(--space-3);
  }
  .journey-viz__node {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
  }
  .journey-viz__name {
    text-align: left;
    max-width: none;
    font-size: var(--text-sm);
  }
  .journey-viz__connector {
    width: 2px;
    height: 16px;
    margin-left: 19px; /* center under 40px node */
  }
}


/* --------------------------------------------------------------------------
   14. COMPONENTS — LEGACY JOURNEY TIMELINE (compact strip)
   -------------------------------------------------------------------------- */

.journey-timeline {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-4) 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.journey-timeline::-webkit-scrollbar { display: none; }

.journey-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  min-width: 80px;
  padding: var(--space-2);
  cursor: pointer;
  text-decoration: none;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.journey-node:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.journey-node__circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: var(--weight-bold);
  font-size: var(--text-sm);
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 2px solid var(--border-color);
  transition: all var(--transition-fast);
}

.journey-node:hover .journey-node__circle,
.journey-node--active .journey-node__circle {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}

.journey-node__label {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-align: center;
  white-space: nowrap;
}

.journey-connector {
  width: 24px;
  height: 2px;
  background-color: var(--border-color);
  flex-shrink: 0;
}


/* --------------------------------------------------------------------------
   15. COMPONENTS — STAGE FILTER
   -------------------------------------------------------------------------- */

.stage-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  align-items: flex-start;
}

.stage-filter__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.stage-filter__phase-label {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  padding-left: var(--space-2);
}

.filter-pills {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding-bottom: var(--space-2);
  -webkit-overflow-scrolling: touch;
}

.filter-pill {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background-color: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
  min-height: 36px;
}

.filter-pill:hover,
.filter-pill--active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-primary);
}

.filter-pill:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}


/* --------------------------------------------------------------------------
   16. COMPONENTS — STATS BAR
   -------------------------------------------------------------------------- */

.stats-bar {
  display: flex;
  justify-content: center;
  gap: var(--space-12);
  padding: var(--space-8) var(--space-4);
  background-color: var(--teal-500);
  color: #FFFFFF;
}

.stats-bar--dark {
  background-color: var(--neutral-900);
}

.stats-bar__item {
  text-align: center;
}

.stats-bar__number {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  display: block;
  margin-bottom: var(--space-1);
}

.stats-bar__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.9;
}

@media (max-width: 640px) {
  .stats-bar {
    flex-direction: column;
    gap: var(--space-6);
  }
}


/* --------------------------------------------------------------------------
   17. COMPONENTS — HERO SECTION
   -------------------------------------------------------------------------- */

.hero {
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-16) var(--space-4);
}

.hero--teal {
  background-color: var(--teal-900);
  color: #FFFFFF;
}

.hero--teal .hero__subtitle {
  color: rgba(255, 255, 255, 0.8);
}

.hero__title {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  max-width: 16ch;
  margin-bottom: var(--space-4);
}

.hero__subtitle {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  color: var(--text-secondary);
  max-width: 52ch;
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}

@media (max-width: 640px) {
  .hero {
    min-height: 70vh;
    padding: var(--space-12) var(--space-4);
  }
  .hero__actions {
    flex-direction: column;
    width: 100%;
  }
  .hero__actions .btn {
    width: 100%;
  }
}


/* --------------------------------------------------------------------------
   18. COMPONENTS — SECTION HEADERS
   -------------------------------------------------------------------------- */

.section-header {
  text-align: center;
  max-width: var(--container-md);
  margin: 0 auto var(--space-10);
}

.section-header__title {
  margin-bottom: var(--space-3);
}

.section-header__subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.section-header__eyebrow {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  display: block;
}


/* --------------------------------------------------------------------------
   19. COMPONENTS — STAGE CONTEXT SIDEBAR
   -------------------------------------------------------------------------- */

.stage-context {
  padding: var(--space-4);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  margin-bottom: var(--space-6);
}

.stage-context--creation     { border-left-color: var(--phase-creation-accent); }
.stage-context--optimization { border-left-color: var(--phase-optimization-accent); }
.stage-context--legacy       { border-left-color: var(--phase-legacy-accent); }

.stage-context__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.stage-context__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}

.stage-context__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}


/* --------------------------------------------------------------------------
   20. COMPONENTS — GLOSSARY
   -------------------------------------------------------------------------- */

.glossary-term {
  border-bottom: 1px dashed var(--color-primary);
  cursor: help;
  position: relative;
}

.glossary-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  width: 280px;
  padding: var(--space-3) var(--space-4);
  background-color: var(--text-primary);
  color: var(--bg-primary);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  z-index: 100;
  pointer-events: none;
}

.glossary-term:hover .glossary-tooltip,
.glossary-term:focus .glossary-tooltip {
  opacity: 1;
  visibility: visible;
}


/* --------------------------------------------------------------------------
   21. COMPONENTS — STAGE NAVIGATION (Prev/Next)
   -------------------------------------------------------------------------- */

.stage-nav {
  display: flex;
  justify-content: space-between;
  padding: var(--space-6) 0;
  border-top: 1px solid var(--border-color);
  margin-top: var(--space-12);
}

.stage-nav__link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.stage-nav__link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.stage-nav__direction {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stage-nav__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
}

.stage-nav__link--next {
  text-align: right;
  margin-left: auto;
}


/* --------------------------------------------------------------------------
   22. COMPONENTS — THEME TOGGLE
   -------------------------------------------------------------------------- */

.theme-toggle {
  display: inline-flex;
  align-items: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 3px;
  transition: all var(--transition-theme);
}

.theme-toggle__option {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 32px;
}

.theme-toggle__option:hover {
  color: var(--text-primary);
}

.theme-toggle__option--active {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}


/* --------------------------------------------------------------------------
   23. COMPONENTS — FORMS
   -------------------------------------------------------------------------- */

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--color-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  min-height: 44px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(129, 180, 177, 0.15);
}

.form-input::placeholder {
  color: var(--neutral-400);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-hint {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.form-error {
  font-size: var(--text-sm);
  color: var(--color-error);
  margin-top: var(--space-1);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-input--error {
  border-color: var(--color-error);
}

.form-input--error:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}


/* --------------------------------------------------------------------------
   24. COMPONENTS — NAVIGATION (site header)
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background-color: rgba(255, 255, 255, 0.92);
}

[data-theme="dark"] .site-header {
  background-color: rgba(18, 18, 18, 0.92);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  max-width: var(--container-2xl);
  margin: 0 auto;
}

.site-header__logo {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  color: var(--text-primary);
  text-decoration: none;
}

.site-header__logo:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav__link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-primary);
  background-color: var(--teal-50);
  text-decoration: none;
}

.site-nav__cta {
  margin-left: var(--space-3);
}

/* Mobile hamburger */
.site-header__toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: var(--text-2xl);
  cursor: pointer;
  padding: var(--space-2);
  min-height: 44px;
  min-width: 44px;
}

@media (max-width: 1024px) {
  .site-header__toggle { display: flex; align-items: center; justify-content: center; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: var(--space-4);
    gap: var(--space-1);
    box-shadow: var(--shadow-lg);
  }
  .site-nav--open { display: flex; }
  .site-nav__link { width: 100%; justify-content: flex-start; }
  .site-nav__cta { margin-left: 0; width: 100%; }
  .site-nav__cta .btn { width: 100%; }
}


/* --------------------------------------------------------------------------
   25. COMPONENTS — FOOTER
   -------------------------------------------------------------------------- */

.site-footer {
  background-color: var(--neutral-900);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-16) var(--space-4) var(--space-8);
}

.site-footer a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-footer a:hover {
  color: var(--teal-300);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-8);
  max-width: var(--container-xl);
  margin: 0 auto var(--space-12);
}

.footer__brand {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  color: #FFFFFF;
  margin-bottom: var(--space-3);
}

.footer__tagline {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  max-width: 300px;
}

.footer__heading {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #FFFFFF;
  margin-bottom: var(--space-4);
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--space-2);
}

.footer__links a {
  font-size: var(--text-sm);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-xl);
  margin: 0 auto;
  font-size: var(--text-sm);
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
  .footer__bottom {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }
}


/* --------------------------------------------------------------------------
   26. UTILITIES
   -------------------------------------------------------------------------- */

.text-center   { text-align: center; }
.text-left     { text-align: left; }
.text-right    { text-align: right; }
.text-muted    { color: var(--text-muted); }
.text-sm       { font-size: var(--text-sm); }
.text-lg       { font-size: var(--text-lg); }

.mt-4  { margin-top: var(--space-4); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-8  { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Smooth scrolling respecting user preferences */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Print styles */
@media print {
  .site-header,
  .site-footer,
  .theme-toggle,
  .btn,
  .filter-pills {
    display: none !important;
  }
  body {
    color: #000;
    background: #FFF;
  }
}