/* ═══════════════════════════════════════════════════
   intro.css — Dopamin Travel · Sinematik Giriş Ekranı
   ═══════════════════════════════════════════════════ */

/* ─── Renk Tokenları ─────────────────────────────── */
:root {
  --bg:        #08080A;
  --surface:   #131418;
  --surface-2: #1C1D22;
  --text:      #F5F3EF;
  --text-dim:  #9A9CA3;
  --accent:    #4FD8E6;
  --accent-2:  #1FA9C8;
  --glow:      rgba(79, 216, 230, .45);
  --line:      rgba(255, 255, 255, .08);

  --ease: cubic-bezier(.2, .7, .2, 1);
}

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

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── Giriş Sarıcısı ─────────────────────────────── */
#intro {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  overflow: hidden;
}

/* ─── Hero Video ─────────────────────────────────── */
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;            /* JS 200ms'de fade-in yapar */
  transform: scale(1);
  transition:
    opacity  1.4s var(--ease),
    transform 1.4s var(--ease);
}

/* Video arkada çalmaya devam eder — bu sınıf artık otomatik eklenmez,
   ama skip / fallback yolları için CSS'de tutuldu. */
.hero-video.is-receded {
  opacity: .18;
  transform: scale(1.06);
}

/* ─── Koyu Scrim ─────────────────────────────────── */
.scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(8, 8, 10, .30)  0%,
    rgba(8, 8, 10, .68) 55%,
    rgba(8, 8, 10, .93) 100%
  );
  opacity: 0;
  pointer-events: none;
  transition: opacity 1.4s var(--ease);
}

/* JS bu sınıfı startReveal()'da ekler (video bitmesi beklenmez) */
.scrim.is-visible {
  opacity: 1;
}

/* ─── "Atla" Linki ───────────────────────────────── */
.skip-link {
  position: absolute;
  top: 2rem;
  right: 2rem;
  z-index: 10;
  font-family: 'Inter', sans-serif;
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  border: 1px solid var(--line);
  padding: .42em 1.1em;
  border-radius: 2em;
  transition: color .2s, border-color .2s;
}

.skip-link:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, .22);
}

.skip-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ─── Merkez İçerik ──────────────────────────────── */
.content {
  position: relative;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.8rem;
  text-align: center;
  padding: 0 1.5rem;
}

/* ─── Gizli Başlangıç Durumu ─────────────────────── */
.intro-hidden {
  opacity: 0 !important;
  pointer-events: none;
}

/* ─── Marka Adı — İki Katlı Premium Wordmark ───── */
.brand-name {
  display: flex;
  flex-direction: column;
  align-items: center;   /* lockup ortaya hizalı; hairline sabit genişlikte */
  width: max-content;
  max-width: calc(100vw - 3rem);
  text-align: center;
}

/* Üst kat: büyük Fraunces serif */
.brand-top {
  font-family: 'Fraunces', Georgia, serif;
  font-optical-sizing: auto;
  font-weight: 700;
  font-size: clamp(3rem, 11vw, 8rem);
  letter-spacing: -.02em;
  line-height: 1;
  color: var(--text);
  white-space: nowrap;
  text-shadow:
    0 0 16px rgba(79, 216, 230, .35),
    0 0 52px var(--glow);
}

/* "i" harfi — italik + aqua aksan */
.brand-i {
  font-style: italic;
  color: var(--accent);
}

/* Hairline: ince aqua vurgu çizgisi
   Delay: harfler açılırken (stagger ortasında) belirir */
.brand-rule {
  display: block;
  width: 92px;
  height: 1.4px;
  background: var(--accent);
  margin: .3em 0 .26em;
  transform-origin: left center;
  opacity: 0;
  transform: scaleX(0);
  transition:
    opacity   .5s  cubic-bezier(.16, 1, .3, 1) .38s,
    transform .65s cubic-bezier(.16, 1, .3, 1) .38s;
}

.brand-rule.visible {
  opacity: 1;
  transform: scaleX(1);
}

/* Alt kat: geniş harf aralıklı Outfit
   Delay: son harfler açılırken TRAVEL belirir */
.brand-bottom {
  font-family: 'Outfit', 'Inter', sans-serif;
  font-weight: 500;
  font-size: clamp(.9rem, 2.8vw, 2rem);
  letter-spacing: .5em;
  padding-right: .5em;
  line-height: 1;
  color: var(--text);
  white-space: nowrap;
  opacity: 0;
  transform: translateY(6px);
  transition:
    opacity   .85s cubic-bezier(.16, 1, .3, 1) .75s,
    transform .85s cubic-bezier(.16, 1, .3, 1) .75s;
}

.brand-bottom.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Harf Stagger (.brand-top karakterleri) ─────── */
/* transitionDelay her karakter için JS'de ayrıca set edilir. */
.char {
  display: inline-block;
  will-change: opacity, transform, filter;
  opacity: 0;
  transform: translateY(18px) scale(1.04);
  filter: blur(12px);
  transition:
    opacity   900ms cubic-bezier(.16, 1, .3, 1),
    transform 900ms cubic-bezier(.16, 1, .3, 1),
    filter    800ms cubic-bezier(.16, 1, .3, 1);
}

.char.visible {
  opacity: 1;
  transform: none;
  filter: none;
}

/* ─── Slogan ─────────────────────────────────────── */
.tagline {
  font-family: 'Inter', sans-serif;
  font-size: clamp(.8rem, 2vw, 1.05rem);
  font-weight: 400;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--text-dim);
  position: relative;
  padding-bottom: .7em;
  will-change: opacity, transform;
  transition:
    opacity   .75s var(--ease),
    transform .75s var(--ease);
}

.tagline.intro-hidden {
  transform: translateY(12px);
}

/* İnce aqua vurgu çizgisi */
.tagline::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2.2em;
  height: 1.5px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 1px;
}

/* ─── CTA Butonu ─────────────────────────────────── */
.cta-btn {
  display: inline-block;
  margin-top: .4rem;
  font-family: 'Inter', sans-serif;
  font-size: .85rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--bg);          /* koyu metin — aqua zemin üzeri kontrast */
  background: var(--accent);
  padding: .9em 3em;
  border-radius: 3px;
  border: none;
  cursor: pointer;
  box-shadow:
    0 0 10px rgba(79, 216, 230, .60),
    0 0 32px var(--glow),
    0 3px 16px rgba(0, 0, 0, .40);
  transition:
    background   .22s,
    box-shadow   .22s,
    transform    .18s var(--ease),
    opacity      .6s  var(--ease);
  will-change: opacity, transform;
}

.cta-btn.intro-hidden {
  transform: translateY(8px);
}

.cta-btn:hover {
  background: var(--accent-2);
  color: var(--text);        /* koyu aqua üzerinde açık metin */
  box-shadow:
    0 0 14px rgba(79, 216, 230, .70),
    0 0 48px var(--glow),
    0 5px 24px rgba(0, 0, 0, .50);
  transform: translateY(-2px);
}

.cta-btn:active {
  transform: translateY(0);
  box-shadow:
    0 0 20px var(--glow),
    0 1px 8px rgba(0, 0, 0, .35);
}

.cta-btn:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 4px;
}

/* ─── Geçiş Örtüsü — buton → anasayfa ──────────── */
.page-transition {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--accent);
  opacity: 0;
  pointer-events: none;
  transition: opacity .6s var(--ease);
}

.page-transition.is-active {
  opacity: 1;
  pointer-events: all;
}

/* ─── Responsive — tablet ────────────────────────── */
@media (max-width: 768px) {
  .content {
    gap: 1.6rem;
    padding: 0 1.25rem;
  }
}

/* ─── Responsive — mobil ─────────────────────────── */
@media (max-width: 600px) {
  /* Video çok ağır: poster arka plan olarak gösterilir,
     JS de video.play() çağırmaz (matchMedia ile algılar) */
  .hero-video {
    display: none;
  }

  /* Poster'ı #intro arka planı olarak göster.
     hero-poster.jpg yoksa var(--bg) koyu rengi devreye girer. */
  #intro {
    background-image: url('../video/hero-poster.webp');
    background-size: cover;
    background-position: center;
  }
}

@media (max-width: 480px) {
  .skip-link {
    top: 1.25rem;
    right: 1.25rem;
    font-size: .68rem;
  }

  .content {
    gap: 1.25rem;
  }

  /* Dokunmatik hedef W3C minimum: 44×44 px */
  .cta-btn {
    padding: 1em 2.6em;
    font-size: .82rem;
    min-height: 44px;
    min-width: 44px;
  }
}

/* ─── prefers-reduced-motion ─────────────────────── */
@media (prefers-reduced-motion: reduce) {
  /* Video ve tüm animasyonları kapat */
  .hero-video {
    display: none;
  }

  .scrim {
    opacity: 1;
    transition: none;
  }

  /* Tüm geçişleri ve başlangıç transform/filter değerlerini sıfırla */
  .brand-name,
  .tagline,
  .cta-btn,
  .skip-link,
  .page-transition {
    transition: none !important;
    animation:  none !important;
  }

  /* Char + lockup alt öğeleri: anında görünür */
  .char,
  .brand-rule,
  .brand-bottom {
    transition: none !important;
    animation:  none !important;
    opacity: 1;
    transform: none;
    filter: none;
  }

  .tagline.intro-hidden,
  .cta-btn.intro-hidden {
    transform: none;
    filter:    none;
  }
}