/* ============================================
   style.css — Component & layout styles
   Behaviour Simulator website
   ============================================ */

/* ============================================
   HEADER
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background var(--transition-base), border-color var(--transition-base);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  gap: var(--space-6);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.header__logo svg {
  width: 32px;
  height: 32px;
  color: var(--color-text);
  flex-shrink: 0;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.header__nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.header__nav a:hover,
.header__nav a[aria-current="page"] {
  color: var(--color-text);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* ============================================
   MOBILE NAVIGATION
   ============================================ */
.menu-toggle,
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.menu-toggle:hover,
.theme-toggle:hover {
  background: var(--color-bg-alt);
}

.menu-toggle svg,
.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.menu-toggle { display: none; }

.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-6);
  gap: var(--space-4);
}

.mobile-nav a {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover { color: var(--color-text); }

.mobile-nav.is-open { display: flex; }

@media (max-width: 768px) {
  .header__nav { display: none; }
  .menu-toggle { display: flex; }
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: var(--space-20) 0;
}

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

.section__header {
  max-width: 640px;
  margin: 0 auto var(--space-12);
  text-align: center;
}

.section__eyebrow {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-3);
}

.section__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.section__desc {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: var(--space-24) 0 var(--space-20);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero__eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-5);
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero__title em {
  font-style: normal;
  color: var(--color-text-faint);
}

.hero__sub {
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  max-width: 580px;
  margin: 0 auto var(--space-8);
  line-height: 1.6;
}

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

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

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

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

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

.btn--ghost:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
  transform: translateY(-1px);
}

/* ============================================
   IMAGE BREAK
   ============================================ */
.image-break {
  margin: var(--space-12) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  aspect-ratio: 16/7;
}

.image-break img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* ============================================
   STATS ROW
   ============================================ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-2);
  margin: var(--space-12) 0 0;
}

.stat-card {
  padding: var(--space-6) var(--space-4);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.stat-card__num {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat-card__label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.4;
}

/* ============================================
   GRID LAYOUTS
   ============================================ */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

@media (max-width: 960px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

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

/* ============================================
   CARDS
   ============================================ */
.card {
  padding: var(--space-8);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.card:hover {
  border-color: var(--color-text-faint);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.card__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.card__icon svg {
  width: 28px;
  height: 28px;
}

.card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.card__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.card__tag {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}

/* ============================================
   MARKET CARD
   ============================================ */
.tam-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: var(--space-3);
}

/* ============================================
   FEATURE ROW
   ============================================ */
.feature-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.feature-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.feature-item--rev {
  direction: rtl;
}

.feature-item--rev > * {
  direction: ltr;
}

.feature-num {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  color: var(--color-border);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.feature-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.feature-text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.feature-vis {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .feature-item,
  .feature-item--rev { grid-template-columns: 1fr; direction: ltr; }
  .feature-vis { min-height: 200px; }
}

/* ============================================
   FLOW DIAGRAM
   ============================================ */
.flow {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
  justify-content: center;
}

.flow__step {
  flex: 1;
  min-width: 160px;
  max-width: 240px;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  text-align: center;
}

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

.flow__step-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.flow__step-text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.flow__arrow {
  display: flex;
  align-items: center;
  padding: 0 var(--space-3);
  color: var(--color-text-faint);
  font-size: var(--text-xl);
  flex-shrink: 0;
}

/* ============================================
   ROCKET DIAGRAM
   ============================================ */
.rocket-diagram {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.rocket-path {
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.rocket-path--bad {
  border-color: #fee2e2;
  background: #fff5f5;
}

[data-theme="dark"] .rocket-path--bad {
  border-color: #3f1515;
  background: #1a0a0a;
}

.rocket-path--good {
  border-color: #d1fae5;
  background: #f0fdf4;
}

[data-theme="dark"] .rocket-path--good {
  border-color: #064e3b;
  background: #0a1f14;
}

.rocket-path__title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
}

.rocket-path--bad .rocket-path__title { color: #dc2626; }
.rocket-path--good .rocket-path__title { color: #059669; }

.rocket-path__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

@media (max-width: 640px) {
  .rocket-diagram { grid-template-columns: 1fr; }
}

/* ============================================
   COMPARISON TABLE
   ============================================ */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-4) var(--space-5);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.comparison-table th {
  font-weight: 700;
  font-family: var(--font-display);
  background: var(--color-bg-alt);
  font-size: var(--text-xs);
  letter-spacing: 0.03em;
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.comparison-table .highlight-col {
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 600;
}

.comparison-table th.highlight-col {
  color: var(--color-accent);
}

/* ============================================
   QUOTE BLOCK
   ============================================ */
.quote-block {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  padding: var(--space-8);
  background: var(--color-bg);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.section--alt .quote-block {
  background: var(--color-bg-elevated);
}

.quote-block__text {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.4;
  color: var(--color-text);
}

/* ============================================
   SPLIT LAYOUT
   ============================================ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

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

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-card {
  text-align: center;
}

.contact-card .card__icon {
  margin: 0 auto var(--space-4);
}

.stat-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.stat-item {
  padding: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.section--alt .stat-item {
  background: var(--color-bg-elevated);
}

.stat-item__num {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-1);
}

.stat-item__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.contact-direct {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-width: 480px;
  margin: 0 auto;
}

.contact-direct__item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-weight: 500;
  text-decoration: none;
  color: var(--color-text);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.contact-direct__item:hover {
  border-color: var(--color-text-faint);
  background: var(--color-bg-elevated);
}

.contact-direct__item svg {
  width: 20px;
  height: 20px;
  color: var(--color-text-faint);
  flex-shrink: 0;
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0 var(--space-8);
  margin-top: auto;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-12);
  margin-bottom: var(--space-8);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-base);
  text-decoration: none;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.footer__logo svg {
  width: 24px;
  height: 24px;
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  max-width: 340px;
  line-height: 1.6;
}

.footer__links {
  display: flex;
  gap: var(--space-12);
}

.footer__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__group h4 {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.footer__group a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__group a:hover {
  color: var(--color-text);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__attribution a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__attribution a:hover {
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .footer__inner { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer__links { gap: var(--space-8); }
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: none;
}