/* =====================================================================
   Dr. Ahmed Abdou — Neurosurgery & Spine
   Cinematic bilingual (AR/EN) single-page site
   ===================================================================== */

:root {
  --bg:       #050b1a;
  --bg-2:     #08122a;
  --bg-3:     #0b1a3a;
  --teal:     #5eead4;
  --cyan:     #38bdf8;
  --gold:     #f6c987;
  --ink:      #eaf2ff;
  --muted:    rgba(234, 242, 255, .62);
  --faint:    rgba(234, 242, 255, .42);
  --line:     rgba(94, 234, 212, .16);
  --glass:    rgba(255, 255, 255, .045);
  --glass-2:  rgba(255, 255, 255, .07);
  --wa:       #25d366;

  --grad-brand: linear-gradient(120deg, var(--teal), var(--cyan));
  --grad-lux:   linear-gradient(120deg, var(--teal), var(--cyan) 55%, var(--gold));
  --shadow:     0 30px 80px -30px rgba(3, 10, 30, .9);
  --radius:     22px;

  --font-display: "Cairo", "Sora", system-ui, sans-serif;
  --font-body:    "Tajawal", "Inter", system-ui, sans-serif;
}

html[lang="en"] {
  --font-display: "Sora", system-ui, sans-serif;
  --font-body:    "Inter", system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

h1, h2, h3, .hero-title { font-family: var(--font-display); line-height: 1.15; }

a { color: inherit; text-decoration: none; }

::selection { background: rgba(94, 234, 212, .28); color: #fff; }

/* ---------- Background layers ---------- */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  display: block;
}
.bg-overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% -10%, rgba(56, 189, 248, .10), transparent 55%),
    radial-gradient(80% 60% at 85% 20%, rgba(246, 201, 135, .06), transparent 60%),
    linear-gradient(180deg, rgba(5, 11, 26, .2) 0%, rgba(5, 11, 26, .55) 55%, var(--bg) 100%);
}
.grain {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: .05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

main, .nav, .footer { position: relative; z-index: 3; }

.glass {
  background: var(--glass);
  border: 1px solid rgba(255, 255, 255, .08);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

/* ---------- Buttons ---------- */
.btn {
  --_pad: .95rem 1.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: var(--_pad);
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .98rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .25s cubic-bezier(.2,.8,.2,1), box-shadow .25s, background .25s, border-color .25s;
  white-space: nowrap;
}
.btn.sm { --_pad: .6rem 1rem; font-size: .85rem; }
.btn:active { transform: scale(.97); }

.btn-primary {
  background: var(--grad-brand);
  color: #04121a;
  box-shadow: 0 12px 34px -10px rgba(56, 189, 248, .6);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 20px 44px -12px rgba(94, 234, 212, .7); }

.btn-ghost {
  background: var(--glass);
  border-color: rgba(255, 255, 255, .14);
  color: var(--ink);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover { border-color: rgba(94, 234, 212, .5); transform: translateY(-2px); }

.btn-wa { background: var(--wa); color: #04140b; box-shadow: 0 10px 30px -12px rgba(37, 211, 102, .6); }
.btn-wa:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -12px rgba(37, 211, 102, .75); }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  transition: background .3s, backdrop-filter .3s, border-color .3s, padding .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 11, 26, .72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.brand { display: inline-flex; align-items: center; gap: .7rem; }
.brand-mark {
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: 13px;
  background: var(--glass-2);
  border: 1px solid var(--line);
  box-shadow: inset 0 0 20px rgba(94, 234, 212, .12);
}
.brand-text b { display: block; font-family: var(--font-display); font-weight: 800; font-size: 1.05rem; letter-spacing: .2px; }
.brand-text small { display: block; color: var(--muted); font-size: .72rem; }

.nav-links {
  display: flex;
  gap: 1.6rem;
  margin-inline-start: auto;
}
.nav-links a {
  color: var(--muted);
  font-weight: 600;
  font-size: .95rem;
  position: relative;
  padding: .3rem 0;
  transition: color .2s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 2px;
  background: var(--grad-brand);
  transform: scaleX(0);
  transition: transform .3s;
  border-radius: 2px;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-actions { display: flex; align-items: center; gap: .7rem; margin-inline-start: 1rem; }

.lang-toggle {
  display: inline-flex; align-items: center; gap: .28rem;
  background: var(--glass);
  border: 1px solid rgba(255, 255, 255, .14);
  color: var(--ink);
  border-radius: 999px;
  padding: .5rem .8rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .82rem;
  cursor: pointer;
  transition: border-color .25s, transform .2s;
}
.lang-toggle:hover { border-color: rgba(94, 234, 212, .5); transform: translateY(-1px); }
.lang-toggle .lang-sep { color: var(--faint); }
html[lang="ar"] .lang-toggle .lang-ar { color: var(--teal); }
html[lang="ar"] .lang-toggle .lang-en { color: var(--faint); }
html[lang="en"] .lang-toggle .lang-en { color: var(--cyan); }
html[lang="en"] .lang-toggle .lang-ar { color: var(--faint); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }

/* ---------- Layout ---------- */
main { display: block; }
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6.5rem 1.5rem;
}
.section-head { text-align: center; max-width: 680px; margin: 0 auto 3.5rem; }
.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .8rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: transparent;
  background: var(--grad-lux);
  -webkit-background-clip: text;
  background-clip: text;
  margin-bottom: .9rem;
}
.section-head h2 { font-size: clamp(1.7rem, 4vw, 2.7rem); font-weight: 800; margin-bottom: .8rem; }
.section-head p { color: var(--muted); font-size: 1.05rem; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  max-width: 1200px;
  margin: 0 auto;
  padding: 8rem 1.5rem 5rem;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  align-items: center;
  gap: 2rem;
  position: relative;
}
.hero-inner { max-width: 620px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .5rem 1rem;
  border-radius: 999px;
  background: var(--glass);
  border: 1px solid var(--line);
  font-size: .85rem;
  color: var(--ink);
  margin-bottom: 1.6rem;
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 0 rgba(94, 234, 212, .7);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(94, 234, 212, .55); }
  70%  { box-shadow: 0 0 0 10px rgba(94, 234, 212, 0); }
  100% { box-shadow: 0 0 0 0 rgba(94, 234, 212, 0); }
}
.hero-title {
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  font-weight: 900;
  letter-spacing: -.5px;
  background: linear-gradient(120deg, #ffffff 20%, var(--teal) 60%, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 1.2rem;
  text-shadow: 0 0 60px rgba(56, 189, 248, .25);
}
.hero-sub { font-size: clamp(1.05rem, 2.5vw, 1.3rem); color: var(--muted); max-width: 560px; margin-bottom: 2.2rem; }
.hero-sub b { color: var(--ink); font-weight: 700; }
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }

.hero-stats { display: flex; gap: 1rem; flex-wrap: wrap; }
.stat {
  border-radius: 16px;
  padding: 1rem 1.2rem;
  min-width: 140px;
  flex: 1;
}
.stat b {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--grad-brand);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat span { font-size: .82rem; color: var(--muted); }

/* Doctor portrait */
.hero-portrait { position: relative; display: grid; place-items: center; }
.portrait-glow {
  position: absolute;
  width: 320px; height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56, 189, 248, .35), transparent 65%);
  filter: blur(30px);
  animation: float 7s ease-in-out infinite;
  pointer-events: none;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-18px); } }
.portrait-card {
  position: relative;
  width: min(340px, 78vw);
  border-radius: 26px;
  padding: 14px;
  box-shadow: var(--shadow);
}
.portrait-img {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: 18px;
  overflow: hidden;
  background: linear-gradient(160deg, var(--bg-3), var(--bg));
  display: grid;
  place-items: center;
}
.portrait-img img { width: 100%; height: 100%; object-fit: cover; }
.portrait-fallback {
  display: none;
  text-align: center;
  color: var(--faint);
  font-size: .95rem;
  padding: 1rem;
}
.portrait-fallback small { display: block; font-size: .75rem; opacity: .7; margin-top: .3rem; }
.portrait-placeholder .portrait-fallback { display: block; }
.portrait-name { padding: 1rem .4rem .3rem; text-align: center; }
.portrait-name b { font-family: var(--font-display); font-size: 1.15rem; }
.portrait-name span { display: block; color: var(--muted); font-size: .8rem; letter-spacing: .3px; }

.scroll-hint {
  position: absolute;
  bottom: 1.6rem; left: 50%; transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 2px solid rgba(255, 255, 255, .25);
  border-radius: 14px;
  display: grid; place-items: start center;
  padding-top: 7px;
}
.scroll-hint span {
  width: 4px; height: 8px; border-radius: 4px; background: var(--teal);
  animation: scrolldot 1.6s infinite;
}
@keyframes scrolldot { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(12px); } }

/* ---------- Cinematic band (Higgsfield video) ---------- */
.cinematic {
  position: relative;
  min-height: 80vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  margin: 2rem 0;
  isolation: isolate;
}
.cinematic-video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: -2;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.cinematic-video.ready { opacity: .85; }
.cinematic-scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 60% at 50% 50%, transparent, rgba(5, 11, 26, .5)),
    linear-gradient(90deg, var(--bg) 0%, rgba(5, 11, 26, .35) 40%, rgba(5, 11, 26, .35) 60%, var(--bg) 100%),
    linear-gradient(180deg, var(--bg), transparent 25%, transparent 75%, var(--bg));
}
/* fallback look when no video has loaded */
.cinematic:not(.has-video) .cinematic-scrim {
  background:
    radial-gradient(80% 120% at 50% 0%, rgba(56, 189, 248, .16), transparent 55%),
    radial-gradient(70% 100% at 50% 100%, rgba(246, 201, 135, .08), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg-2) 50%, var(--bg));
}
.cinematic-content {
  max-width: 720px;
  text-align: center;
  padding: 3rem 1.5rem;
}
.cinematic-content h2 {
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  font-weight: 800;
  margin: .6rem 0 1rem;
}
.cinematic-content h2 em {
  font-style: normal;
  background: var(--grad-lux);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.cinematic-content p { color: var(--muted); font-size: 1.1rem; }

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
.card {
  border-radius: var(--radius);
  padding: 1.8rem;
  transition: transform .3s cubic-bezier(.2,.8,.2,1), border-color .3s, box-shadow .3s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 80% at 50% -20%, rgba(56, 189, 248, .1), transparent 60%);
  opacity: 0;
  transition: opacity .35s;
  pointer-events: none;              /* let clicks reach the links below */
}
.card:hover { border-color: rgba(94, 234, 212, .35); box-shadow: var(--shadow); }
.card:hover::before { opacity: 1; }
.card-icon {
  width: 58px; height: 58px;
  display: grid; place-items: center;
  font-size: 1.7rem;
  border-radius: 15px;
  background: var(--glass-2);
  border: 1px solid var(--line);
  margin-bottom: 1.2rem;
}
.card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: .6rem; }
.card p { color: var(--muted); font-size: .96rem; }

/* Locations */
.locations .card { display: flex; flex-direction: column; }
.loc h3 { margin-bottom: .5rem; }
.loc .addr { color: var(--muted); font-size: .92rem; margin-bottom: 1.2rem; flex: 1; }
.loc-actions { display: flex; gap: .6rem; flex-wrap: wrap; margin-bottom: .9rem; }
.map-link { font-size: .85rem; color: var(--cyan); font-weight: 600; transition: color .2s; }
.map-link:hover { color: var(--teal); }

/* ---------- Symptoms ---------- */
.symptoms {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-width: 980px;
  margin: 0 auto;
}
.sym {
  display: flex;
  align-items: flex-start;
  gap: .9rem;
  padding: 1.1rem 1.3rem;
  border-radius: 15px;
  font-weight: 600;
  font-family: inherit;
  font-size: 1rem;
  color: var(--ink);
  text-align: start;
  cursor: pointer;
  width: 100%;
  transition: transform .25s, border-color .25s, box-shadow .25s;
  align-self: start;               /* don't stretch to row height in the grid */
}
.sym:hover { transform: translateY(-3px); border-color: rgba(94, 234, 212, .35); }
.sym:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; }
.sym.open { border-color: rgba(94, 234, 212, .5); box-shadow: var(--shadow); }
.sym-num {
  flex: none;
  width: 32px; height: 32px;
  display: grid; place-items: center;
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 800;
  background: var(--grad-brand);
  color: #04121a;
  margin-top: 1px;
}
.sym-body { flex: 1; min-width: 0; }
.sym-title { font-style: normal; display: block; line-height: 1.4; }
.sym-detail {
  display: block;
  color: var(--muted);
  font-weight: 400;
  font-size: .92rem;
  line-height: 1.65;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(-4px);
  transition: max-height .45s cubic-bezier(.2,.8,.2,1), opacity .35s ease, transform .35s ease, margin-top .35s ease;
}
.sym.open .sym-detail { max-height: 260px; opacity: 1; transform: none; margin-top: .6rem; }
.sym-caret {
  flex: none;
  width: 20px; height: 20px;
  margin-top: 6px;
  position: relative;
  transition: transform .35s cubic-bezier(.2,.8,.2,1);
  opacity: .7;
}
.sym-caret::before {
  content: "";
  position: absolute;
  top: 3px; left: 5px;
  width: 8px; height: 8px;
  border-right: 2px solid var(--teal);
  border-bottom: 2px solid var(--teal);
  transform: rotate(45deg);
}
.sym.open .sym-caret { transform: rotate(180deg); opacity: 1; }
.sym-cta { text-align: center; margin-top: 2.8rem; }
.sym-cta p { font-size: 1.15rem; font-weight: 600; margin-bottom: 1.2rem; }

/* ---------- Contact ---------- */
.contact-box {
  border-radius: 28px;
  padding: 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.contact-box::before {
  content: "";
  position: absolute;
  top: -40%; inset-inline-end: -10%;
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(56, 189, 248, .22), transparent 65%);
  filter: blur(20px);
  pointer-events: none;
}
.contact-text { position: relative; }
.contact-text h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 800; margin-bottom: .7rem; }
.contact-text p { color: var(--muted); }
.contact-phones { display: grid; gap: .8rem; position: relative; }
.phone-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.3rem;
  border-radius: 15px;
  transition: transform .25s, border-color .25s;
}
.phone-pill span { color: var(--muted); font-size: .9rem; }
.phone-pill b { font-family: var(--font-display); font-size: 1.2rem; letter-spacing: .5px; direction: ltr; }
.phone-pill:hover { transform: translateY(-3px); border-color: rgba(94, 234, 212, .4); }

/* ---------- Footer ---------- */
.footer {
  text-align: center;
  padding: 3rem 1.5rem 4rem;
  border-top: 1px solid var(--line);
  margin-top: 3rem;
}
.footer .muted { color: var(--faint); font-size: .85rem; margin-top: .4rem; }

/* ---------- WhatsApp modal ---------- */
.wa-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
.wa-modal.open { opacity: 1; pointer-events: auto; }
.wa-backdrop { position: absolute; inset: 0; background: rgba(3, 8, 20, .7); backdrop-filter: blur(6px); }
.wa-dialog {
  position: relative;
  width: min(420px, 92vw);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: var(--shadow);
  transform: translateY(16px) scale(.97);
  transition: transform .35s cubic-bezier(.2,.9,.2,1);
}
.wa-modal.open .wa-dialog { transform: translateY(0) scale(1); }
.wa-close {
  position: absolute;
  top: 1rem; inset-inline-end: 1rem;
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .14);
  background: var(--glass);
  color: var(--ink);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}
.wa-head { text-align: center; margin-bottom: 1.5rem; }
.wa-badge {
  display: grid; place-items: center;
  width: 56px; height: 56px;
  margin: 0 auto .8rem;
  border-radius: 50%;
  background: var(--wa);
  color: #04140b;
}
.wa-head h3 { font-size: 1.3rem; margin-bottom: .3rem; }
.wa-head p { color: var(--muted); font-size: .9rem; }
.wa-options { display: grid; gap: .7rem; }
.wa-opt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.2rem;
  border-radius: 14px;
  transition: transform .2s, border-color .2s;
}
.wa-opt:hover { transform: translateY(-2px); border-color: rgba(37, 211, 102, .5); }
.wa-opt-name { font-family: var(--font-display); font-weight: 700; }
.wa-opt-num { color: var(--muted); direction: ltr; }

/* ---------- Floating WhatsApp ---------- */
.fab-wa {
  position: fixed;
  bottom: 1.5rem; inset-inline-end: 1.5rem;
  z-index: 60;
  width: 58px; height: 58px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--wa);
  color: #04140b;
  box-shadow: 0 14px 34px -8px rgba(37, 211, 102, .6);
  animation: float 4s ease-in-out infinite;
  transition: transform .25s;
}
.fab-wa:hover { transform: scale(1.08); }

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s cubic-bezier(.2,.8,.2,1), transform .8s cubic-bezier(.2,.8,.2,1);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding-top: 7rem; }
  .hero-inner { margin: 0 auto; }
  .hero-cta, .hero-stats, .hero-badge { justify-content: center; }
  .hero-badge { margin-inline: auto; }
  .hero-portrait { order: -1; margin-bottom: 1rem; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .contact-box { grid-template-columns: 1fr; }
  .scroll-hint { display: none; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; margin-inline-start: auto; }
  .nav-actions { margin-inline-start: 0; }
  .nav-cta span { display: none; }
  .nav-cta { padding: .6rem .8rem; }
  .nav.open .nav-links {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    padding: .5rem 1.5rem 1.2rem;
    background: rgba(5, 11, 26, .96);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
  }
  .nav.open .nav-links a { padding: .8rem 0; }
  .cards, .symptoms { grid-template-columns: 1fr; }
  .section { padding: 4.5rem 1.2rem; }
  .contact-box { padding: 2rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}