/* ========================================
   KRONIKA DESIGN LAYERS
   1) src/data/design.js -> renkler, fontlar, radius, layout
   2) Bu dosya -> component ve sayfa stilleri
   ======================================== */

:root {
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  --text-xs: 0.75rem;
  --text-sm: 0.92rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.35rem;
  --text-2xl: clamp(1.9rem, 4vw, 2.8rem);
  --text-3xl: clamp(2.6rem, 6vw, 4.4rem);
}

/* THEME TOKENS -> src/data/design.js */
/* LAYOUT & COMPONENT RULES -> bu dosya */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: radial-gradient(circle at top, var(--color-bg-decor), transparent 24%), var(--color-bg);
  color: var(--color-text);
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
img { max-width: 100%; display: block; }

.site-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-width);
  background: var(--color-sidebar);
  color: var(--color-sidebar-text);
  display: none;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-5) var(--space-3);
  z-index: 30;
}

.sidebar__brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.sidebar__nav {
  display: grid;
  gap: var(--space-3);
  width: 100%;
}

.nav-link {
  display: grid;
  place-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-2);
  border-radius: 18px;
  color: var(--color-sidebar-muted);
  font-size: var(--text-xs);
}
.nav-link span { display: none; }
.nav-link { transition: background var(--transition-fast), color var(--transition-fast); }
.nav-link:hover, .nav-link.is-active { background: var(--color-sidebar-hover); color: var(--color-sidebar-text); }

.mobile-topbar {
  position: sticky;
  top: 0;
  z-index: 25;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4);
  backdrop-filter: blur(var(--blur-amount));
  background: var(--color-topbar);
  border-bottom: 1px solid var(--color-border);
}

.mobile-topbar__brand {
  font-family: var(--font-display);
  font-size: 1.65rem;
}

.main-content {
  width: min(calc(100% - (var(--page-gutter) * 2)), var(--container-width));
  margin: 0 auto;
  padding: var(--space-5) 0 calc(6rem + var(--space-5));
}

.mobile-tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: color-mix(in srgb, var(--color-border) 50%, transparent);
  backdrop-filter: blur(calc(var(--blur-amount) * 1.5));
  z-index: 20;
}
.mobile-tabbar__link {
  display: grid;
  justify-items: center;
  gap: 0.2rem;
  background: var(--color-tabbar);
  padding: 0.7rem 0.3rem 0.8rem;
  font-size: 0.68rem;
}

.mobile-tabbar__link.is-active { color: var(--color-accent-strong); }

.icon {
  width: 1.2rem;
  height: 1.2rem;
  flex: 0 0 auto;
}
.icon-button {
  width: 2.7rem;
  height: 2.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-surface-strong);
  color: var(--color-text);
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  transition: transform var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}
.icon-button.is-active,
.is-favorite .icon-button,
.button.is-active { color: var(--color-accent-strong); }

.hero-grid,
.dashboard-grid,
.detail-grid,
.card-grid {
  display: grid;
  gap: var(--space-5);
}
.hero-grid { margin-top: var(--space-4); }
.card-grid--two, .dashboard-grid, .detail-grid { grid-template-columns: 1fr; }
.card-grid--three { grid-template-columns: 1fr; }

.hero-card,
.hero-side,
.panel-card,
.note-card,
.detail-block,
.empty-state,
.stat-card,
.fact-card,
.stack-item,
.timeline-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--color-shadow);
  border-radius: var(--radius-lg);
}

.hero-card,
.panel-card,
.note-card,
.detail-block,
.fact-card,
.empty-state { padding: var(--space-6); }
.hero-side { padding: var(--space-4); display: grid; gap: var(--space-3); align-content: start; }

.hero-card h1,
.page-hero h1,
.empty-state h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  line-height: 0.95;
}
.page-hero { padding: var(--space-4) 0 var(--space-5); }
.page-hero h1 { margin-top: var(--space-2); }
.lead {
  font-size: var(--text-lg);
  color: var(--color-text-soft);
  max-width: 62ch;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-accent-strong);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero-actions,
.tag-row,
.filter-row,
.section-heading,
.panel-card__meta,
.fact-card__top,
.metric-row,
.related-links { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.hero-actions { margin-top: var(--space-5); }
.section { margin-top: var(--section-gap); }
.section-heading { justify-content: space-between; align-items: center; margin-bottom: var(--space-4); }
.section-heading h2,
.detail-block h2,
.panel-card h2,
.fact-card h2,
.panel-card h3,
.fact-card h3 { margin: 0 0 var(--space-2); font-size: var(--text-xl); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.9rem;
  padding: 0 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}
.button--primary { background: var(--color-accent); color: var(--color-button-primary-text); }
.button--secondary { background: color-mix(in srgb, var(--color-sidebar) 86%, white 14%); color: var(--color-button-secondary-text); }
.button--ghost { background: transparent; border-color: var(--color-border); color: var(--color-text); }
.text-link { display: inline-flex; align-items: center; gap: 0.35rem; color: var(--color-accent-strong); font-weight: 600; }

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.9rem;
  padding: 0 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-muted-surface);
  font-size: var(--text-xs);
}
.badge--accent {
  background: var(--color-accent-soft);
  border-color: var(--color-accent-border);
}

.stack-list { display: grid; gap: var(--space-3); }
.stack-item {
  padding: var(--space-4);
  display: block;
}
.stack-item p,
.panel-card p,
.fact-card p,
.detail-block p,
.note-card p,
.empty-state p { color: var(--color-text-soft); margin: 0.4rem 0 0; }
.stack-item--link:hover { transform: translateY(-1px); }

.metric-row div { min-width: 7rem; }
.metric-row strong,
.stat-card strong { display: block; font-size: clamp(1.35rem, 2vw, 1.95rem); font-weight: 700; line-height: 1.05; }
.metric-row span,
.stat-card__label,
.muted { color: var(--color-text-soft); }

.hero-side__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.stat-card {
  padding: var(--space-5);
  min-height: 100%;
  display: grid;
  gap: var(--space-2);
}

.stat-card--date strong {
  font-size: 1.12rem;
  line-height: 1.35;
  max-width: 18ch;
}

.section-intro {
  margin: var(--space-2) 0 0;
  color: var(--color-text-soft);
  max-width: 64ch;
}

.section-heading--split {
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
}

.section-heading__copy {
  display: grid;
  gap: var(--space-2);
}

.category-section {
  margin-top: var(--section-gap);
}

.category-section .card-grid {
  margin-top: var(--space-4);
}

.timeline-list { display: grid; gap: var(--space-4); }
.timeline-list--home { max-width: 980px; }
.timeline-item {
  padding: var(--space-5);
  display: grid;
  gap: var(--space-4);
}

.timeline-item__content h3 {
  margin: 0;
  font-size: 1.2rem;
}

.timeline-item__content p {
  margin: 0.55rem 0 0;
}
.timeline-item__year {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--color-accent-strong);
}
.timeline-item__why { padding-top: var(--space-2); }

.checklist { display: grid; gap: var(--space-3); }
.checklist-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}
.checklist-item:last-child { border-bottom: 0; }
.checklist-item input { width: 1rem; height: 1rem; accent-color: var(--color-success); }

.related-links { display: grid; }
.related-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.filter-row { margin-bottom: var(--space-4); }
.chip {
  min-height: 2.4rem;
  padding: 0 0.95rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-surface-strong);
  color: var(--color-text);
}
.chip.is-active { border-color: var(--color-accent-border); color: var(--color-accent-strong); }

.bullet-list { margin: 0; padding-left: 1.1rem; display: grid; gap: var(--space-3); }
.empty-state {
  text-align: center;
  display: grid;
  gap: var(--space-4);
  place-items: center;
  margin-top: 10vh;
}
.empty-state__icon {
  width: 4.2rem;
  height: 4.2rem;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  background: var(--color-accent-soft);
  color: var(--color-accent-strong);
}

.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }
.reduced-motion .reveal,
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

@media (min-width: 760px) {
  .hero-grid { grid-template-columns: 1.4fr 0.86fr; align-items: stretch; }
  .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid--two { grid-template-columns: repeat(2, 1fr); }
  .card-grid--three { grid-template-columns: repeat(2, 1fr); }
  .detail-grid { grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.75fr); align-items: start; }
  .timeline-item { grid-template-columns: 190px 1fr; align-items: start; }
}

@media (min-width: 1100px) {
  .sidebar { display: flex; }
  .mobile-topbar, .mobile-tabbar { display: none; }
  .main-content {
    width: min(calc(100% - 6rem), var(--container-width));
    margin-left: calc(var(--sidebar-width) + 2rem);
    padding: var(--space-6) 0 var(--space-7);
  }
  .card-grid--three { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1099px) {
  .sidebar {
    display: flex;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    width: min(18rem, calc(100vw - 2rem));
    align-items: stretch;
    padding-top: 5rem;
  }
  .sidebar.is-open { transform: translateX(0); }
  .sidebar__brand { writing-mode: initial; transform: none; padding-inline: var(--space-4); }
  .nav-link { grid-template-columns: 1.4rem 1fr; place-items: center start; padding-inline: var(--space-4); }
  .nav-link span { display: inline; }
}