/* layout.css — GRS Kumaşçılık × Newsprint */

/* ── A11y: Görünmez ama screen reader okur ── */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── A11y: Skip to content ── */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  transform: translateY(-150%);
  z-index: calc(var(--z-nav) + 50);
  padding: 1rem 1.5rem;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid var(--accent);
  transition: transform var(--t-base) var(--ease-out-expo);
}

.skip-link:focus-visible,
.skip-link:focus {
  transform: translateY(0);
  outline: none;
}

/* ── A11y: Focus rings (premium, brand color) ── */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Dark sections: light focus */
.inverted :focus-visible,
.fabric-lab-section :focus-visible,
.collection-taxonomy-section :focus-visible,
#numbers :focus-visible,
#footer :focus-visible {
  outline-color: var(--accent-bright);
}

/* ── Anchor scroll-margin (nav offset) ── */
section[id],
:target {
  scroll-margin-top: clamp(80px, 12vh, 120px);
}

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ── Section Base ── */
section {
  position: relative;
}

.section-inner {
  padding-block: var(--space-2xl);
}

main > .page-hero + section .section-inner {
  padding-top: clamp(2rem, 4vh, 3rem);
}

main > .page-hero + section {
  padding-top: clamp(2rem, 4vh, 3rem) !important;
}

/* ── Nav Layout — Newsprint masthead stili ── */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.75rem var(--container-pad);
  transition: background var(--t-slow) ease,
              border-color var(--t-slow) ease,
              padding var(--t-slow) ease;
  border-bottom: 1px solid transparent;
}

/* Scroll sonrası: kağıt arka plan + mürekkep kenarlık */
#nav.scrolled {
  background: var(--paper);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  padding-block: 1.1rem;
  border-bottom: 2px solid var(--ink);
}

.nav-logo {
  flex-shrink: 0;
  line-height: 0;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

/* Scroll sonrası logo değişimi */
#nav.scrolled .nav-logo-light { display: none; }
#nav.scrolled .nav-logo-dark  { display: block; }
#nav:not(.scrolled) .nav-logo-light { display: block; }
#nav:not(.scrolled) .nav-logo-dark  { display: none; }

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 3rem);
}

/* ── Hero Layout ── */
#hero {
  position: relative;
  width: 100%;
  height: 100svh;
  min-height: 640px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--ink);
  isolation: isolate;
}

/* Gazete masthead üst şerit */
#hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent);
  z-index: var(--z-content);
}

.hero-slider {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.4s cubic-bezier(0.65, 0, 0.35, 1),
              visibility 0s linear 1.4s;
}

.hero-slide.is-active {
  opacity: 1;
  visibility: visible;
  transition: opacity 1.4s cubic-bezier(0.65, 0, 0.35, 1),
              visibility 0s linear 0s;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  transform: scale(1.02);
  transition: transform 8s linear;
  filter: grayscale(18%) contrast(1.05);
}

.hero-slide.is-active img {
  transform: scale(1.1);
}

/* Mürekkep tonu — alttan yoğun, üstten hafif */
.hero-slide-tint {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      rgba(14, 26, 28, 0.22) 0%,
      rgba(14, 26, 28, 0.32) 38%,
      rgba(14, 26, 28, 0.82) 72%,
      rgba(14, 26, 28, 0.96) 100%),
    linear-gradient(90deg,
      rgba(14, 26, 28, 0.58) 0%,
      rgba(14, 26, 28, 0.15) 45%,
      transparent 75%);
}

#hero-canvas,
#hero-wave-fallback {
  display: none !important;
}

.hero-content {
  position: relative;
  z-index: var(--z-content);
  padding: 0 var(--container-pad) clamp(6rem, 12vh, 10rem);
  max-width: min(1100px, 92%);
}

/* Gazete baskı numarası — hero sol alt */
.hero-edition {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--font-mono);
  font-size: var(--label);
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: clamp(1.25rem, 2.5vw, 2rem);
}

.hero-eyebrow-mark {
  width: 36px;
  height: 2px;
  background: var(--accent);
  flex-shrink: 0;
}

.hero-sub {
  margin-top: 1.75rem;
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.1vw, 1.18rem);
  line-height: 1.65;
  letter-spacing: 0.01em;
  color: rgba(249, 249, 247, 0.82);
  max-width: 52ch;
  margin-bottom: 0;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.hero-tags li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper);
  padding: 0.45rem 0.85rem;
  background: transparent;
  border: 1px solid rgba(249, 249, 247, 0.28);
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 2.5vw, 2rem);
  flex-wrap: wrap;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.hero-cta-secondary {
  color: var(--paper);
}

/* Hero Slider Nav — minimal çizgiler */
.hero-slider-nav {
  position: absolute;
  right: var(--container-pad);
  bottom: clamp(2.5rem, 4.5vh, 4.5rem);
  z-index: var(--z-content);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.85rem;
}

.hero-slider-label { display: none; }

.hero-slider-label-text {
  display: inline-block;
  transition: opacity 0.35s ease, transform 0.5s var(--ease-out-expo);
}

.hero-slider-label.is-changing .hero-slider-label-text {
  opacity: 0;
  transform: translateY(8px);
}

.hero-slider-bars {
  display: flex;
  gap: 0.65rem;
  align-items: center;
}

.hero-slider-bar {
  position: relative;
  width: clamp(36px, 5vw, 56px);
  height: 1px;
  padding: 18px 0;
  margin: -18px 0;
  background: transparent;
  border: 0;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.hero-slider-bar::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: rgba(249, 249, 247, 0.2);
  transition: background 0.3s ease;
}

.hero-slider-bar:hover::before {
  background: rgba(249, 249, 247, 0.45);
}

.hero-slider-bar.is-active::before {
  background: rgba(249, 249, 247, 0.3);
}

.hero-slider-bar-fill {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
}

@media (max-width: 767px) {
  .hero-slider-nav {
    right: var(--container-pad);
    bottom: clamp(1.75rem, 4vh, 3.25rem);
    gap: 0.6rem;
  }
  .hero-slider-bar { width: 32px; }
  .hero-slider-label { display: none; }
  .hero-content { padding-bottom: clamp(7rem, 14vh, 9rem); }
}

.scroll-indicator {
  position: absolute;
  bottom: clamp(2.5rem, 5vh, 5rem);
  left: var(--container-pad);
  z-index: var(--z-content);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  color: rgba(249, 249, 247, 0.45);
  pointer-events: none;
}

.scroll-indicator span {
  font-family: var(--font-mono);
  font-size: var(--label);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  writing-mode: vertical-lr;
  transform: rotate(180deg);
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--paper);
  animation: scroll-drop 2s var(--ease-out-expo) infinite;
}

@keyframes scroll-drop {
  to { top: 200%; }
}

/* ── Collections Grid — kağıt arka plan, mürekkep kenarlıklar ── */
#collections {
  height: auto;
  overflow: visible;
  background: var(--paper);
}

.collections-wrapper {
  height: auto;
  display: block;
  padding: 0 var(--container-pad) var(--space-2xl);
}

.collections-track {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--ink);
  padding: 0;
  will-change: auto;
}

.collections-track .collection-card {
  border-right: 1px solid var(--ink);
}

.collections-track .collection-card:nth-child(even) {
  border-right: none;
}

/* ── Split-screen Layout ── */
.split-screen {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 80vh;
  border: 1px solid var(--ink);
}

.split-screen > * {
  position: relative;
  overflow: hidden;
}

/* ── Numbers Grid — INVERTEDsection ── */
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid rgba(249, 249, 247, 0.18);
}

.number-item {
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  border-right: 1px solid rgba(249, 249, 247, 0.18);
}

.number-item:last-child {
  border-right: none;
}

/* ── Editorial Grid — 3 eşit kart ── */
.editorial-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--ink);
}

.editorial-grid > * {
  border-right: 1px solid var(--ink);
}

.editorial-grid > *:last-child {
  border-right: none;
}

/* ── Final CTA — kağıt bölüm ── */
#final-cta {
  min-height: auto;
  background: var(--paper);
  border-top: 2px solid var(--ink);
  overflow: hidden;
  position: relative;
}

.cta-inner {
  position: relative;
  z-index: var(--z-content);
  padding: var(--space-2xl) var(--container-pad);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
}

.cta-buttons {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* ── Footer — Gazete kapak altı (INVERTEDink) ── */
#footer {
  background: var(--ink);
  border-top: 4px solid var(--accent);
  padding-top: var(--space-2xl);
  overflow: hidden;
  color: var(--paper);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 0.9fr 1.2fr 1fr;
  gap: 0;
  padding-bottom: var(--space-2xl);
  align-items: start;
  border: 1px solid rgba(249, 249, 247, 0.12);
}

.footer-grid > * {
  padding: var(--space-lg);
  border-right: 1px solid rgba(249, 249, 247, 0.12);
}

.footer-grid > *:last-child {
  border-right: none;
}

.footer-bar {
  border-top: 1px solid rgba(249, 249, 247, 0.15);
  padding-block: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--label);
  color: rgba(249, 249, 247, 0.45);
  letter-spacing: 0.08em;
}

.footer-bar-links {
  display: flex;
  gap: 2rem;
}

/* ── Page Hero (alt sayfalar) — Ink üzeri kağıt tipografi ── */
.page-hero {
  height: clamp(260px, 30vh, 380px);
  min-height: 260px;
  display: flex;
  align-items: flex-end;
  background: var(--ink);
  overflow: hidden;
  border-bottom: 4px solid var(--accent);
}

.page-hero.large {
  height: clamp(340px, 46vh, 560px);
  min-height: 340px;
}

.page-hero-content {
  padding: 0 var(--container-pad) clamp(2rem, 5vh, 4rem);
  position: relative;
  z-index: var(--z-content);
  width: 100%;
}

/* ── Marquee wrapper — INVERTEDticker ── */
.marquee-section {
  overflow: hidden;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  padding-block: 1.25rem;
  background: var(--ink);
}

/* ── Unified Section Header ── */
.section-header {
  max-width: 760px;
  margin-bottom: clamp(2rem, 4vw, 3.25rem);
}

.section-header.section-header-wide {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
}

/* Bölüm üst satırı — küçük harf etiketi (premium ölçek)
   color: accent-deep (#2A5F62) → AAA contrast on paper */
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.95rem;
  font-family: var(--font-mono);
  font-size: var(--eyebrow);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0 0 1.4rem;
}

/* Inverted section'larda parlak teal kullan */
.inverted .section-eyebrow,
#numbers .section-eyebrow,
.fabric-lab-section .section-eyebrow,
.collection-taxonomy-section .section-eyebrow,
.page-hero .section-eyebrow {
  color: var(--accent-bright);
}

.section-eyebrow::before {
  content: '';
  width: 36px;
  height: 2px;
  background: var(--accent);
  flex-shrink: 0;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.85rem, 5.8vw, 6rem);
  font-weight: 700;
  line-height: 0.96;
  letter-spacing: -0.022em;
  color: var(--ink);
  margin: 0;
  max-width: 18ch;
}

.section-title em {
  font-style: italic;
  font-weight: 600;
}

/* İnverted bölümde section-title */
.inverted .section-title,
.inverted .section-eyebrow {
  color: var(--paper);
}

.inverted .section-eyebrow {
  color: var(--accent);
}

.fabric-lab-section .section-title,
.collection-taxonomy-section .section-title {
  color: var(--paper);
}

.fabric-lab-section .section-lede,
.collection-taxonomy-section .section-lede {
  color: rgba(249, 249, 247, 0.72);
}

.section-lede {
  margin: 1.25rem 0 0;
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1.28vw, 1.24rem);
  line-height: 1.7;
  color: var(--ink-mid);
  max-width: 52ch;
}

.inverted .section-lede {
  color: rgba(249, 249, 247, 0.72);
}

.section-header-wide .section-lede {
  margin-top: 0;
  align-self: end;
  padding-bottom: 0.4rem;
}

@media (max-width: 767px) {
  .section-header.section-header-wide {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .section-header-wide .section-lede {
    padding-bottom: 0;
  }
}