/* ============================================================
   OHARA DENTAL STUDIO — Core Design System
   Ink navy + champagne gold premium identity
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700&family=Cormorant+Garamond:ital,wght@0,400;0,500;1,400;1,500&display=swap');

:root {
  /* Color */
  --ink: #0B0E14;
  --surface: #11151F;
  --surface-raised: #161B27;
  --gold: #C9A668;
  --gold-soft: rgba(201, 166, 104, 0.14);
  --ivory: #F5F3EE;
  --slate: #7A8699;
  --hairline: #1C2230;

  /* Type */
  --font-display: 'Cairo', sans-serif;
  --font-accent: 'Cormorant Garamond', serif;
  --font-body: 'Cairo', sans-serif;

  /* Spacing scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 7rem;
  --space-2xl: 10rem;

  /* Layout */
  --container-w: 1240px;
  --radius-sm: 2px;
  --radius-md: 4px;

  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 0.6s;
}

/* ============================================================
   RESET
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--ivory);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.7;
  direction: rtl;
  text-align: right;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }

:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 4px;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 300;
  letter-spacing: 0.01em;
  margin: 0;
  color: var(--ivory);
}

h1 { font-size: clamp(2.6rem, 5vw, 4.6rem); line-height: 1.15; }
h2 { font-size: clamp(2rem, 3.2vw, 3rem); line-height: 1.2; }
h3 { font-size: clamp(1.3rem, 2vw, 1.7rem); font-weight: 400; }

p { margin: 0; color: var(--slate); }

.eyebrow {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--gold);
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}
.eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--gold);
  display: inline-block;
}

.accent-num {
  font-family: var(--font-accent);
  font-style: italic;
  color: var(--gold);
}

.lede {
  font-size: 1.15rem;
  color: var(--slate);
  max-width: 46ch;
}

/* ============================================================
   LAYOUT HELPERS
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.section {
  padding-block: var(--space-xl);
  position: relative;
}

.section-head {
  margin-bottom: var(--space-lg);
}

.section-head.center {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-lg);
}

.hairline {
  border: none;
  border-top: 1px solid var(--hairline);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.95rem 2.1rem;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gold);
  color: var(--ink);
}
.btn-primary:hover {
  background: #e0bf86;
  transform: translateY(-2px);
}

.btn-ghost {
  border-color: var(--hairline);
  color: var(--ivory);
}
.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}

.btn-text {
  color: var(--gold);
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.05rem;
  position: relative;
}
.btn-text::after {
  content: '←';
  margin-inline-start: 0.4rem;
  transition: transform var(--dur) var(--ease);
  display: inline-block;
}
.btn-text:hover::after { transform: translateX(-6px); }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  padding-block: var(--space-md);
  background: transparent;
  transition: background var(--dur) var(--ease), padding var(--dur) var(--ease), border-color var(--dur) var(--ease);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(11, 14, 20, 0.88);
  backdrop-filter: blur(12px);
  padding-block: var(--space-sm);
  border-color: var(--hairline);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: 0.08em;
  color: var(--ivory);
}
.brand span { color: var(--gold); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.nav-links a {
  font-size: 0.95rem;
  color: var(--slate);
  position: relative;
  transition: color var(--dur) var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--ivory); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  inset-inline: 0;
  height: 1px;
  background: var(--gold);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--ivory);
  font-size: 1.6rem;
}

@media (max-width: 880px) {
  .nav-links {
    position: fixed;
    inset: 0 0 0 auto;
    top: 0;
    height: 100vh;
    width: min(80vw, 340px);
    background: var(--surface);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding-inline: var(--space-lg);
    transform: translateX(100%);
    transition: transform var(--dur) var(--ease);
    border-inline-start: 1px solid var(--hairline);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-toggle { display: block; }
}

/* ============================================================
   HERO — split asymmetric + trust seal
   ============================================================ */
.hero {
  padding-top: clamp(7rem, 14vw, 10rem);
  padding-bottom: var(--space-xl);
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.hero-copy h1 { margin-bottom: var(--space-sm); }
.hero-copy .lede { margin-bottom: var(--space-md); }
.hero-actions { display: flex; gap: var(--space-sm); flex-wrap: wrap; }

.hero-visual {
  position: relative;
}
.hero-visual figure {
  margin: 0;
  border: 1px solid var(--gold-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 92%, 88% 100%, 0 100%);
  aspect-ratio: 4 / 5;
}
.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-seal {
  position: absolute;
  bottom: -2.2rem;
  inset-inline-start: -2.2rem;
  width: 108px;
  height: 108px;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--gold);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: 0 12px 40px rgba(0,0,0,0.45);
}
.hero-seal strong {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.8rem;
  color: var(--gold);
  line-height: 1;
}
.hero-seal span {
  font-size: 0.62rem;
  color: var(--slate);
  letter-spacing: 0.04em;
  margin-top: 0.2rem;
}

@media (max-width: 880px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 320px; margin-inline: auto; }
}

/* ============================================================
   TRUST BAND
   ============================================================ */
.trust-band {
  border-block: 1px solid var(--hairline);
  padding-block: var(--space-md);
}
.trust-band .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  text-align: center;
}
.trust-stat strong {
  display: block;
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 2.2rem;
  color: var(--gold);
}
.trust-stat span {
  font-size: 0.85rem;
  color: var(--slate);
}
@media (max-width: 700px) {
  .trust-band .container { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   CARDS
   ============================================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}
@media (max-width: 980px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .card-grid { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.card:hover {
  border-color: var(--gold-soft);
  transform: translateY(-4px);
}
.card .accent-num {
  font-size: 1rem;
  display: block;
  margin-bottom: var(--space-sm);
}
.card h3 { margin-bottom: var(--space-xs); }
.card p { font-size: 0.95rem; }

/* ============================================================
   GALLERY / IMAGE GRID
   ============================================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}
.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  aspect-ratio: 1;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}
.gallery-item:hover img { transform: scale(1.06); }
@media (max-width: 700px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}
[data-reveal-group] > * { transition-delay: calc(var(--i, 0) * 0.08s); }

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  background: var(--surface);
  border-block: 1px solid var(--hairline);
  text-align: center;
  padding-block: var(--space-xl);
}
.cta-band h2 { margin-bottom: var(--space-sm); }
.cta-band .lede { margin-inline: auto; margin-bottom: var(--space-md); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--hairline);
  padding-block: var(--space-lg) var(--space-md);
}
.footer .container {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-md);
}
.footer h4 {
  font-size: 0.85rem;
  color: var(--gold);
  margin-bottom: var(--space-sm);
  font-weight: 400;
}
.footer p, .footer a { font-size: 0.9rem; color: var(--slate); }
.footer li { margin-bottom: 0.5rem; }
.footer a:hover { color: var(--ivory); }
.footer-bottom {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--slate);
  flex-wrap: wrap;
  gap: var(--space-sm);
}
@media (max-width: 700px) {
  .footer .container { grid-template-columns: 1fr; }
}

/* ============================================================
   WHATSAPP FLOAT
   ============================================================ */
.whatsapp-float {
  position: fixed;
  bottom: var(--space-md);
  inset-inline-start: var(--space-md);
  z-index: 90;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  transition: transform var(--dur) var(--ease);
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 26px; height: 26px; fill: var(--ink); }

/* ============================================================
   FORM ELEMENTS
   ============================================================ */
.field {
  margin-bottom: var(--space-sm);
}
.field label {
  display: block;
  font-size: 0.85rem;
  color: var(--slate);
  margin-bottom: 0.4rem;
}
.field input, .field textarea, .field select {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--ivory);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--dur) var(--ease);
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--gold);
  outline: none;
}