/**
 * PodControl Component Kit - Core Components
 * Step 1 of build order: Design system + component kit (no pages yet)
 */

:root {
  /* Button heights */
  --btn-height-sm: 40px;
  --btn-height-md: 48px;
  --btn-height-lg: 56px;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-base);
  line-height: 1;
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
  min-height: var(--btn-height-md);
  padding: 0 var(--space-6);
}

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

/* Primary - pill, signal or ink */
.btn-primary {
  background: var(--color-primary);
  color: var(--color-primary-text);
  border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

/* Primary on dark chapter */
.chapter-dark .btn-primary {
  background: var(--color-signal);
  border-color: var(--color-signal);
}

.chapter-dark .btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

/* Secondary - outline */
.btn-secondary {
  background: transparent;
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-secondary);
  color: var(--color-paper);
}

/* Ghost - no border, for tertiary actions */
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: transparent;
  padding: 0 var(--space-4);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--color-border);
  border-radius: var(--radius-md);
}

/* Sizes */
.btn-sm {
  min-height: var(--btn-height-sm);
  font-size: var(--text-sm);
  padding: 0 var(--space-4);
}

.btn-lg {
  min-height: var(--btn-height-lg);
  font-size: var(--text-lg);
  padding: 0 var(--space-8);
}

/* Full width */
.btn-block {
  width: 100%;
}

/* ========================================
   CARDS
   ======================================== */

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

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

.card-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  background: var(--color-background);
}

/* ========================================
   FORM CONTROLS
   ======================================== */

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

.form-label {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  min-height: var(--btn-height-md);
  padding: 0 var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-focus);
  box-shadow: 0 0 0 3px rgb(41 147 209 / 0.2);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

.form-error {
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: #dc2626;
}

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

/* ========================================
   BADGES / TAGS
   ======================================== */

.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-live {
  background: #dcfce7;
  color: #166534;
}

.badge-coming-soon {
  background: #fef3c7;
  color: #92400e;
}

.badge-gated {
  background: #fee2e2;
  color: #991b1b;
}

.badge-unproven {
  background: var(--color-background);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* ========================================
   SECTIONS / CHAPTERS
   ======================================== */

.section {
  padding: var(--space-16) var(--space-6);
}

.section-hero {
  padding: var(--space-24) var(--space-6) var(--space-32);
}

.section-compact {
  padding: var(--space-10) var(--space-6);
}

.chapter {
  max-width: var(--chapter-content);
  margin: 0 auto;
}

.chapter-wide {
  max-width: var(--chapter-wide);
  margin: 0 auto;
}

.chapter-hero {
  max-width: var(--chapter-hero);
  margin: 0 auto;
  text-align: center;
}

/* Alternating chapter backgrounds */
.chapter:nth-child(odd):not(.chapter-hero):not(:first-child) {
  background: var(--color-background);
}

.chapter:nth-child(even):not(.chapter-hero) {
  background: var(--color-surface);
}

.chapter-dark {
  background: var(--color-deep-ink);
  color: var(--color-paper);
}

/* ========================================
   TYPOGRAPHY UTILITIES
   ======================================== */

.heading-1 {
  font-family: var(--font-display);
  font-size: clamp(var(--text-4xl), 5vw, var(--text-7xl));
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.chapter-dark .heading-1 {
  color: var(--color-paper);
}

.heading-2 {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 600;
  line-height: var(--leading-snug);
  letter-spacing: -0.01em;
  color: var(--color-ink);
}

.chapter-dark .heading-2 {
  color: var(--color-paper);
}

.heading-3 {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 600;
  line-height: var(--leading-snug);
  color: var(--color-ink);
}

.chapter-dark .heading-3 {
  color: var(--color-paper);
}

.body-lg {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text);
}

.body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
}

.body-sm {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text-muted);
}

.trust-cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

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

/* ========================================
   CLIP WALL
   ======================================== */

.clip-wall {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--clip-wall-gap);
  margin-top: var(--space-8);
}

.clip-card {
  position: relative;
  border-radius: var(--clip-thumb-radius);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.clip-thumb {
  aspect-ratio: var(--clip-thumb-aspect);
  width: 100%;
  object-fit: cover;
  background: var(--color-background);
}

.clip-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgb(0 0 0 / 0.7));
  opacity: 0;
  transition: opacity var(--transition-normal);
  display: flex;
  align-items: flex-end;
  padding: var(--space-4);
}

.clip-card:hover .clip-overlay {
  opacity: 1;
}

.clip-meta {
  color: white;
  font-family: var(--font-body);
  font-size: var(--text-sm);
}

/* ========================================
   NAVIGATION
   ======================================== */

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.chapter-dark .nav {
  background: rgba(15, 42, 54, 0.9);
  border-bottom-color: var(--color-border);
}

.nav-brand {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-ink);
  text-decoration: none;
}

.chapter-dark .nav-brand {
  color: var(--color-paper);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  padding: var(--space-16) var(--space-6) var(--space-8);
  background: var(--color-ink);
  color: var(--color-paper);
}

.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 {
  max-width: 280px;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: #a2bfc9;
  line-height: var(--leading-relaxed);
}

.footer-column h4 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
  color: var(--color-signal);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-links a {
  font-size: var(--text-sm);
  color: #cbd5e1;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-signal);
}

.footer-bottom {
  border-top: 1px solid #16414f;
  padding-top: var(--space-6);
  max-width: var(--container-xl);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: #64748b;
}

/* ========================================
   DEMO VIDEO
   ======================================== */

.demo-video {
  position: relative;
  width: 100%;
  max-width: var(--demo-max-width);
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-deep-ink);
  aspect-ratio: var(--demo-aspect);
}

.demo-video video,
.demo-video iframe {
  width: 100%;
  height: 100%;
  display: block;
}

.demo-poster {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: opacity var(--transition-normal);
}

.demo-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: var(--color-signal);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-xl);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.demo-play-btn svg {
  width: 32px;
  height: 32px;
  color: white;
  margin-left: 4px;
}

.demo-video:hover .demo-play-btn {
  transform: translate(-50%, -50%) scale(1.1);
  background: var(--color-primary-hover);
}

/* ========================================
   EVIDENCE BAND
   ======================================== */

.evidence-band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  padding: var(--space-6);
  background: var(--color-background);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.evidence-stat {
  text-align: center;
}

.evidence-number {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1;
}

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

/* ========================================
   FAQ MODULE
   ======================================== */

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) 0;
}

.faq-question {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-right: var(--space-2);
}

.faq-question::after {
  content: '+';
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  padding-top: var(--space-3);
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text);
  margin: 0;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

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

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.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); }

.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.w-full { width: 100%; }
.max-w-content { max-width: var(--chapter-content); }
.max-w-wide { max-width: var(--chapter-wide); }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
  :root {
    --btn-height-md: 48px;
    --tap-target-min: 48px;
  }

  .section { padding: var(--space-10) var(--space-4); }
  .section-hero { padding: var(--space-16) var(--space-4) var(--space-20); }
  .section-compact { padding: var(--space-8) var(--space-4); }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .nav-links {
    display: none; /* Mobile menu would be separate component */
  }

  .evidence-band {
    flex-direction: column;
    gap: var(--space-4);
  }

  .clip-wall {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --text-base: 0.9375rem; /* 15px */
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   PRINT
   ======================================== */

@media print {
  .nav, .footer, .btn, .demo-video { display: none !important; }
  .chapter-dark { background: white !important; color: black !important; }
  a { text-decoration: underline; }
}
/* PodControl mobile nav fix (2026-10-12)
 *
 * Defect: main.js toggles .nav-links.open on hamburger click and sets
 * aria-expanded=true, but components.css only declared
 * `.nav-links { display: none }` inside the 768px media query. No rule
 * defined what `.open` does, so the button flipped state and the menu
 * stayed invisible. A phone user could not navigate past the fold.
 *
 * Fix: give .open a real presentation, full width under the bar.
 * Appended so it wins on order without needing !important.
 */

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 60;
    gap: 0;
    margin: 0;
    padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
    background: var(--paper, #F6FAFA);
    border-bottom: 1px solid var(--rule, #E3ECEC);
    box-shadow: 0 12px 24px rgba(31, 76, 95, 0.12);
  }

  .nav-links.open a {
    display: block;
    width: 100%;
    padding: var(--space-3, 0.75rem) 0;
    font-size: 1.0625rem;
    color: var(--ink, #1F4C5F);
    border-bottom: 1px solid var(--rule, #E3ECEC);
  }

  .nav-links.open a:last-child {
    border-bottom: 0;
  }

  /* The bar is the positioning context for the dropdown. */
  .nav {
    position: relative;
  }
}