/* ==========================================================================
   Lumina Odontologia — dark navy, minimal, premium
   ========================================================================== */

:root {
  --navy-900: #050914;
  --navy-800: #070D1E;
  --navy-700: #0B1428;
  --navy-600: #101B36;
  --line: rgba(255, 255, 255, .09);
  --line-soft: rgba(255, 255, 255, .05);

  --white: #F4F7FF;
  --dim: rgba(244, 247, 255, .62);
  --dimmer: rgba(244, 247, 255, .38);

  --blue: #4D8DFF;
  --blue-soft: rgba(77, 141, 255, .14);
  --blue-glow: rgba(77, 141, 255, .35);

  --display: 'Sora', system-ui, sans-serif;
  --body: 'Inter', system-ui, sans-serif;

  --pad: clamp(1.25rem, 5vw, 6rem);
  --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--navy-900);
  color: var(--white);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.12; letter-spacing: -.02em; margin: 0; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }

::selection { background: var(--blue); color: #fff; }

.eyebrow {
  font-size: .72rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--blue); font-weight: 500; margin-bottom: 1rem;
}

/* ---------- botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .95rem 1.7rem; border-radius: 100px; border: 1px solid transparent;
  font-family: var(--body); font-size: .95rem; font-weight: 500; cursor: pointer;
  transition: transform .25s ease, background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 0 0 0 var(--blue-glow); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px -12px var(--blue-glow); }
.btn-ghost { border-color: var(--line); color: var(--white); backdrop-filter: blur(6px); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-2px); }
.btn-block { width: 100%; }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.15rem var(--pad);
  transition: background .35s ease, border-color .35s ease;
  border-bottom: 1px solid transparent;
}
.nav.solid {
  background: rgba(5, 9, 20, .82); backdrop-filter: blur(14px);
  border-bottom-color: var(--line-soft);
}
.brand { font-family: var(--display); font-weight: 700; font-size: 1.15rem; letter-spacing: -.03em; }
.brand span { color: var(--blue); }
.nav-links { display: flex; align-items: center; gap: 2rem; font-size: .9rem; color: var(--dim); }
.nav-links a { transition: color .2s ease; }
.nav-links a:hover { color: var(--white); }
.nav-admin {
  color: var(--blue) !important; border: 1px solid var(--line);
  padding: .5rem 1rem; border-radius: 100px;
}
.nav-admin:hover { border-color: var(--blue); background: var(--blue-soft); }

/* ---------- hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: grid; place-items: center; text-align: center;
  padding: 8rem var(--pad) 6rem;
  background: radial-gradient(120% 90% at 50% 0%, #0E1B38 0%, var(--navy-900) 70%);
  overflow: hidden;
}
.hero-video {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; z-index: 0;
  filter: saturate(.55) contrast(1.05) brightness(.55);
}
.hero-scrim {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(180deg, rgba(5,9,20,.86) 0%, rgba(5,9,20,.55) 35%, rgba(5,9,20,.92) 100%),
    radial-gradient(80% 60% at 50% 45%, rgba(77,141,255,.16) 0%, transparent 70%);
}
.hero-content { position: relative; z-index: 2; max-width: 62rem; }
.kicker {
  font-size: .74rem; letter-spacing: .24em; text-transform: uppercase;
  color: var(--dim); margin-bottom: 1.8rem;
}
.hero-title { font-size: clamp(2.4rem, 6.6vw, 5.2rem); font-weight: 600; }
.hero-title .line { display: block; }
.hero-title em {
  font-style: normal; color: var(--blue);
  text-shadow: 0 0 42px rgba(77, 141, 255, .45);
}
.hero-sub {
  max-width: 40rem; margin: 1.8rem auto 0;
  color: var(--dim); font-size: clamp(1rem, 1.5vw, 1.15rem); font-weight: 300;
}
.hero-cta { display: flex; gap: .9rem; justify-content: center; flex-wrap: wrap; margin-top: 2.6rem; }

.scroll-hint {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: .6rem;
  font-size: .68rem; letter-spacing: .2em; text-transform: uppercase; color: var(--dimmer);
}
.scroll-hint span {
  width: 1px; height: 40px;
  background: linear-gradient(180deg, transparent, var(--blue));
  animation: hint 2.4s ease-in-out infinite;
}
@keyframes hint { 0%,100% { opacity: .25; transform: scaleY(.6); } 50% { opacity: 1; transform: scaleY(1); } }

/* ---------- tese ---------- */
.thesis {
  display: grid; grid-template-columns: auto 1fr; gap: clamp(2rem, 6vw, 5rem); align-items: center;
  padding: clamp(5rem, 12vw, 9rem) var(--pad);
  border-bottom: 1px solid var(--line-soft);
}
.thesis-num {
  font-family: var(--display); font-weight: 700; letter-spacing: -.04em;
  font-size: clamp(4rem, 13vw, 10rem); line-height: .85; color: var(--blue);
  text-shadow: 0 0 80px rgba(77, 141, 255, .35);
}
.thesis-text { max-width: 38rem; color: var(--dim); font-size: clamp(1rem, 1.7vw, 1.25rem); font-weight: 300; }
.thesis-text strong { color: var(--white); font-weight: 500; }

/* ---------- features ---------- */
.features { padding: clamp(5rem, 12vw, 9rem) var(--pad); }
.sec-head { max-width: 44rem; margin-bottom: clamp(3rem, 6vw, 4.5rem); }
.sec-head h2 { font-size: clamp(1.9rem, 4vw, 3.1rem); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.25rem; }
.card {
  position: relative; padding: 2.4rem 2rem 2.2rem;
  background: linear-gradient(180deg, var(--navy-700), var(--navy-800));
  border: 1px solid var(--line); border-radius: var(--radius);
  transition: border-color .3s ease, transform .3s ease;
  overflow: hidden;
}
.card::before {
  content: ''; position: absolute; inset: 0 0 auto 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
  opacity: 0; transition: opacity .35s ease;
}
.card:hover { border-color: rgba(77, 141, 255, .35); transform: translateY(-4px); }
.card:hover::before { opacity: 1; }
.card-idx {
  font-family: var(--display); font-size: .72rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--blue); margin-bottom: 1.6rem;
}
.card h3 { font-size: 1.4rem; margin-bottom: .9rem; }
.card > p { color: var(--dim); font-size: .95rem; font-weight: 300; }
.card-list { list-style: none; margin: 1.6rem 0 0; padding: 1.4rem 0 0; border-top: 1px solid var(--line-soft); }
.card-list li {
  position: relative; padding-left: 1.4rem; color: var(--dimmer);
  font-size: .87rem; line-height: 1.5; margin-bottom: .6rem;
}
.card-list li::before {
  content: ''; position: absolute; left: 0; top: .55em;
  width: 5px; height: 5px; border-radius: 50%; background: var(--blue);
}
.card em { font-style: normal; color: var(--white); }

/* ---------- timeline horizontal ---------- */
.track-wrap { background: var(--navy-800); border-block: 1px solid var(--line-soft); }
.track-pin {
  min-height: 100svh; display: flex; flex-direction: column; justify-content: center;
  padding: 4rem 0; overflow: hidden;
}
.track-head { padding: 0 var(--pad); margin-bottom: 3rem; }
.track-head h2 { font-size: clamp(1.8rem, 3.8vw, 2.9rem); }

.track {
  position: relative; display: flex; gap: 1.25rem;
  padding: 0 var(--pad); width: max-content;
}
/* sem GSAP (ou reduced motion): vira um carrossel com scroll nativo */
.track-wrap:not(.pinned) .track-pin { overflow-x: auto; scroll-snap-type: x mandatory; }
.track-wrap:not(.pinned) .step { scroll-snap-align: center; }

.track-line {
  position: absolute; left: var(--pad); right: var(--pad); top: 2.9rem; height: 1px;
  background: linear-gradient(90deg, var(--blue), rgba(77,141,255,.15));
}
.step {
  position: relative; flex: 0 0 clamp(260px, 24vw, 340px);
  padding: 4.6rem 1.8rem 2rem;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: linear-gradient(180deg, var(--navy-700), rgba(7,13,30,.6));
}
.step::before {
  content: ''; position: absolute; top: 2.55rem; left: 1.8rem;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--navy-900); border: 2px solid var(--blue);
  box-shadow: 0 0 0 5px var(--navy-800), 0 0 18px var(--blue-glow);
}
.step-time {
  display: block; font-size: .72rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--blue); margin-bottom: .9rem;
}
.step h3 { font-size: 1.2rem; margin-bottom: .7rem; }
.step p { color: var(--dim); font-size: .9rem; font-weight: 300; }
.step-final { background: linear-gradient(180deg, rgba(77,141,255,.16), rgba(7,13,30,.6)); border-color: rgba(77,141,255,.35); }
.step-cta { margin-top: 1.6rem; font-size: .85rem; padding: .7rem 1.3rem; }

/* ---------- prova ---------- */
.proof {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center;
  padding: clamp(5rem, 12vw, 9rem) var(--pad);
}
.proof-media {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); aspect-ratio: 4 / 3; background: var(--navy-700);
}
.proof-media video { width: 100%; height: 100%; object-fit: cover; filter: saturate(.6) brightness(.75); }
.proof-media::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(5,9,20,.7));
}
.proof-copy h2 { font-size: clamp(1.8rem, 3.6vw, 2.8rem); margin-bottom: 1.2rem; }
.proof-copy > p { color: var(--dim); font-weight: 300; }
.proof-stats { display: flex; flex-wrap: wrap; gap: 2.4rem; margin: 2.4rem 0; }
.proof-stats dt { font-family: var(--display); font-size: 1.7rem; color: var(--blue); }
.proof-stats dd { margin: .3rem 0 0; font-size: .85rem; color: var(--dimmer); max-width: 9rem; }

/* ---------- contato ---------- */
.contact {
  padding: clamp(5rem, 12vw, 9rem) var(--pad);
  background: radial-gradient(90% 70% at 20% 0%, #0D1834 0%, var(--navy-900) 65%);
  border-top: 1px solid var(--line-soft);
}
.contact-inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 5rem);
  align-items: start; max-width: 74rem; margin: 0 auto;
}
.contact-copy h2 { font-size: clamp(1.9rem, 4vw, 3rem); margin-bottom: 1.2rem; }
.contact-copy > p { color: var(--dim); font-weight: 300; }
.contact-meta { list-style: none; padding: 1.6rem 0 0; margin: 2rem 0 0; border-top: 1px solid var(--line-soft); }
.contact-meta li { color: var(--dimmer); font-size: .88rem; margin-bottom: .5rem; }

.contact-form {
  padding: 2rem; border: 1px solid var(--line); border-radius: var(--radius);
  background: linear-gradient(180deg, var(--navy-700), var(--navy-800));
}
.field { margin-bottom: 1.1rem; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field label { display: block; font-size: .78rem; letter-spacing: .06em; color: var(--dim); margin-bottom: .45rem; }
.field .opt { color: var(--dimmer); }
.field input, .field select, .field textarea {
  width: 100%; padding: .85rem 1rem; border-radius: 10px;
  background: rgba(5, 9, 20, .6); border: 1px solid var(--line);
  color: var(--white); font-family: var(--body); font-size: .95rem;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-soft);
}
.field input::placeholder, .field textarea::placeholder { color: rgba(244,247,255,.28); }
.field select option { background: var(--navy-700); color: var(--white); }
.field .invalid { border-color: #FF6B6B; }
.field input[type="date"]::-webkit-calendar-picker-indicator { filter: invert(1) opacity(.5); cursor: pointer; }

.form-foot { margin-top: 1rem; font-size: .78rem; color: var(--dimmer); line-height: 1.5; }
.form-ok {
  margin-top: 1rem; padding: .9rem 1rem; border-radius: 10px;
  background: var(--blue-soft); border: 1px solid rgba(77,141,255,.35);
  color: var(--white); font-size: .87rem;
}

/* ---------- rodapé ---------- */
.foot {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center;
  padding: 2rem var(--pad); border-top: 1px solid var(--line-soft);
  font-size: .8rem; color: var(--dimmer);
}
.foot a:hover { color: var(--blue); }

/* ---------- estados de animação (GSAP assume daqui) ---------- */
.js [data-hero], .js .reveal, .js .card, .js .step { opacity: 0; }

/* ---------- responsivo ---------- */
@media (max-width: 900px) {
  .thesis { grid-template-columns: 1fr; }
  .proof { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; }
  .nav-links a:not(.nav-admin) { display: none; }
}
@media (max-width: 560px) {
  .field-row { grid-template-columns: 1fr; }
  .proof-stats { gap: 1.4rem; }
  .foot { justify-content: center; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-hero], .js .reveal, .js .card, .js .step { opacity: 1; }
  .scroll-hint span { animation: none; }
}