/* ==========================================================================
   YachtLux Çeşme — Reset, tipografi, layout primitives
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--keten);
  background: var(--derin-ege);
  -webkit-font-smoothing: antialiased;
}

img,
picture,
video {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
p,
figure {
  margin: 0;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--neon-mercan);
  outline-offset: 2px;
}

/* --- Tipografi kademeleri (yalnızca üç: display / body / label) --- */

.display {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--fs-display);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  color: var(--sicak-beyaz);
}

.display em {
  font-style: italic;
}

.body-text {
  max-width: var(--measure-body);
}

.label {
  font-family: var(--font-body);
  font-size: var(--fs-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--krom-2);
}

/* --- Grid --- */

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* --- Çizgi dili: kart = zemin + hairline, radius yok, gölge yok --- */

.hairline-top {
  border-top: 1px solid var(--hairline);
}

.hairline-bottom {
  border-bottom: 1px solid var(--hairline);
}

/* --- CTA butonu — tek neon aksan ---
   Metin koyu lacivert: koral zemin üzerinde beyaz metin AA'yı geçmiyordu
   (2.78:1). Koyu metin 6.18:1 — doğrulandı (bkz. proje notları). */

.btn-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.75em;
  padding: 1em 2em;
  background: var(--neon-mercan);
  color: var(--gece-lacivert);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  overflow: hidden;
  transition: transform 200ms var(--ease-sweep), background 200ms var(--ease-sweep);
}

.btn-cta:hover {
  background: #ff7783;
  transform: translateY(-2px);
}

.btn-cta:active {
  transform: translateY(0);
}

/* Pointer-tracked ışık — imleç konumuna göre kayan dar bir highlight,
   sadece buton sınırları içinde (LCP dışı, tekrarlanabilir, ucuz). */
.btn-cta::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    120px circle at var(--mx, 50%) var(--my, 50%),
    rgba(255, 255, 255, 0.35),
    transparent 70%
  );
  opacity: 0;
  transition: opacity 200ms ease-out;
  pointer-events: none;
}

.btn-cta:hover::after {
  opacity: 1;
}

/* ==========================================================================
   Reveal — sadece transform + opacity (Bölüm 7)
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-reveal) var(--ease-reveal),
    transform var(--dur-reveal) var(--ease-reveal);
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

.reveal-stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 350ms ease-out, transform 350ms ease-out;
}

.reveal-stagger.in > * {
  opacity: 1;
  transform: translateY(0);
}

.reveal-stagger.in > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger.in > *:nth-child(2) { transition-delay: 60ms; }
.reveal-stagger.in > *:nth-child(3) { transition-delay: 120ms; }
.reveal-stagger.in > *:nth-child(4) { transition-delay: 180ms; }
.reveal-stagger.in > *:nth-child(5) { transition-delay: 240ms; }
.reveal-stagger.in > *:nth-child(6) { transition-delay: 300ms; }
.reveal-stagger.in > *:nth-child(7) { transition-delay: 360ms; }

/* ==========================================================================
   Erişilebilirlik / performans kapatma anahtarları
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .reveal-stagger > * {
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
  }

  .btn-cta::after {
    display: none;
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ==========================================================================
   Talep formu modalı (Bölüm 6)
   ========================================================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(7, 22, 32, 0.72);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease-out;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  position: relative;
  width: 100%;
  max-width: 440px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  padding: 40px 32px 32px;
  background: var(--keten);
  color: var(--gece-lacivert);
  transform: translateY(16px);
  transition: transform 200ms ease-out;
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  font-size: 1.25rem;
  line-height: 1;
  color: var(--gece-lacivert);
}

.modal h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.field input,
.field select {
  width: 100%;
  padding: 0.75em;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--gece-lacivert);
  background: var(--sicak-beyaz);
  border: 1px solid var(--hairline-strong);
}

.field-consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 24px;
  font-size: 0.8125rem;
  line-height: 1.5;
}

.field-consent input {
  margin-top: 3px;
  flex-shrink: 0;
}

.form-error {
  color: #b3261e;
  font-size: 0.8125rem;
  margin-bottom: 16px;
}

.form-success {
  font-size: 1rem;
  line-height: 1.6;
}

/* ==========================================================================
   Floating WhatsApp butonu — tüm scroll boyunca sabit (Bölüm 6/10)
   ========================================================================== */

.whatsapp-fab {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: var(--z-whatsapp-fab);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: #25d366;
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(7, 22, 32, 0.35);
  transition: transform 200ms var(--ease-sweep);
}

.whatsapp-fab:hover {
  transform: scale(1.06);
}

.whatsapp-fab svg {
  width: 28px;
  height: 28px;
}

/* ==========================================================================
   Lightbox (Galeri, Bölüm 10)
   ========================================================================== */

.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(7, 22, 32, 0.92);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease-out;
}

.lightbox-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-figure {
  max-width: min(1200px, 92vw);
  max-height: 88vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.lightbox-figure img {
  max-width: 100%;
  max-height: 78vh;
  width: auto;
  height: auto;
  object-fit: contain;
}

.lightbox-figure figcaption {
  color: var(--krom-2);
  font-size: 0.8125rem;
  text-align: center;
}

.lightbox-close,
.lightbox-nav {
  position: fixed;
  color: var(--sicak-beyaz);
  font-size: 1.5rem;
  line-height: 1;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-close {
  top: 16px;
  right: 16px;
  font-size: 1.75rem;
}

.lightbox-prev {
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 2rem;
}

.lightbox-next {
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 2rem;
}