/* ==========================================================================
   Millennium Aesthetics — Design Tokens
   Direction: "Clinical Blueprint" — precise, navy-on-white, technical-drawing
   motifs drawn from the anatomy of an implant (crown / abutment / fixture).
   ========================================================================== */

:root {
  /* Color */
  --paper: #FFFFFF;
  --paper-soft: #F4F6F9;
  --ink: #10151C;
  --ink-soft: #57667A;
  --blue-deep: #16305C;      /* primary — navy */
  --blue-signal: #2F6FED;    /* accent — signal blue, used sparingly */
  --line: #DCE3EA;
  --line-strong: #B9C4D0;
  --zirconia: #EDF1F5;       /* card / panel fill */
  --white-glow: rgba(47, 111, 237, 0.08);

  /* Type */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Layout */
  --max-width: 1180px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 2px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--ink-soft); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-signal);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--blue-signal);
  display: inline-block;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section {
  padding: clamp(56px, 8vw, 108px) 0;
}
.section--soft { background: var(--paper-soft); }
.section--navy { background: var(--blue-deep); color: #fff; }
.section--navy p { color: rgba(255,255,255,0.72); }
.section--navy .eyebrow { color: #8FB2FF; }
.section--navy .eyebrow::before { background: #8FB2FF; }

.section-head {
  max-width: 620px;
  margin-bottom: 44px;
}

/* Buttons */
.btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 13px 26px;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}
.btn-primary {
  background: var(--blue-deep);
  color: #fff;
}
.btn-primary:hover { background: var(--blue-signal); transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--blue-deep);
}
.btn-ghost:hover { border-color: var(--blue-deep); }

.btn-on-navy {
  background: #fff;
  color: var(--blue-deep);
}
.btn-on-navy:hover { background: #8FB2FF; color: var(--blue-deep); }

/* ==========================================================================
   Header / Nav
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--blue-deep);
}
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-sub {
  display: block;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-size: 0.92rem;
  color: var(--ink-soft);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--blue-deep);
  border-bottom-color: var(--blue-signal);
}

.nav-right { display: flex; align-items: center; gap: 16px; }

.lang-toggle {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
}
.lang-toggle button {
  border: none;
  background: transparent;
  padding: 7px 11px;
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  color: var(--ink-soft);
}
.lang-toggle button.active {
  background: var(--blue-deep);
  color: #fff;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--blue-deep);
  margin: 5px 0;
}

@media (max-width: 880px) {
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px var(--gutter) 18px;
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-toggle { display: block; }
  .nav-cta { display: none; }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding: clamp(48px, 8vw, 96px) 0 20px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin: 28px 0 34px;
}

.hero-stats {
  display: flex;
  gap: clamp(20px, 4vw, 44px);
  flex-wrap: wrap;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.stat-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--blue-deep);
  display: block;
}
.stat-label {
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.blueprint-panel {
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 28px;
  position: relative;
}
.blueprint-panel::before {
  content: attr(data-tag);
  position: absolute;
  top: 14px; left: 14px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  text-transform: uppercase;
}

/* ==========================================================================
   Grids / Cards
   ========================================================================== */

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
@media (max-width: 880px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 26px;
  transition: border-color 0.18s ease, transform 0.18s ease;
}
.card:hover { border-color: var(--blue-signal); transform: translateY(-2px); }

.card-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--blue-signal);
  margin-bottom: 12px;
  display: block;
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--zirconia);
  color: var(--blue-deep);
  padding: 4px 9px;
  border-radius: 2px;
  margin: 0 6px 6px 0;
}

/* Process steps */
.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.process-step {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 26px 22px;
}
.process-num {
  font-family: var(--font-mono);
  color: var(--blue-signal);
  font-size: 0.85rem;
  display: block;
  margin-bottom: 10px;
}
@media (max-width: 880px) {
  .process-list { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .process-list { grid-template-columns: 1fr; }
}

/* Doctor / team */
.doctor-card { text-align: left; }
.doctor-avatar {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--blue-deep);
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}

/* Testimonials */
.testimonial-card {
  background: var(--paper-soft);
  border-left: 3px solid var(--blue-signal);
  padding: 24px 26px;
  border-radius: 2px;
}
.testimonial-quote {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--ink);
  margin-bottom: 14px;
}
.testimonial-name { font-size: 0.85rem; color: var(--ink-soft); }

/* Gallery / case cards */
.case-card {
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
  background: #fff;
}
.case-visual {
  background: var(--paper-soft);
  padding: 18px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--line);
}
.case-visual .arrow {
  font-family: var(--font-mono);
  color: var(--blue-signal);
  font-size: 0.8rem;
}
.case-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-align: center;
  margin-top: 6px;
}
.case-body { padding: 20px 22px; }

/* Forms */
.form-field {
  margin-bottom: 18px;
}
.form-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 7px;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: #fff;
  color: var(--ink);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 2px solid var(--blue-signal);
  outline-offset: 1px;
  border-color: var(--blue-signal);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}
.form-note {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 10px;
}
.form-success {
  display: none;
  background: var(--zirconia);
  border: 1px solid var(--blue-signal);
  padding: 16px 18px;
  border-radius: 2px;
  font-size: 0.92rem;
  margin-top: 16px;
}
.form-success.show { display: block; }

/* Info list (contact) */
.info-list { list-style: none; margin: 0; padding: 0; }
.info-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
}
.info-list .k {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue-signal);
}

.map-frame {
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
  aspect-ratio: 4/3;
}
.map-frame iframe { width: 100%; height: 100%; border: 0; }

/* Footer */
.site-footer {
  background: var(--blue-deep);
  color: rgba(255,255,255,0.85);
  padding: 54px 0 26px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
@media (max-width: 880px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
.footer-grid h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8FB2FF;
  margin-bottom: 14px;
}
.footer-grid a, .footer-grid p {
  color: rgba(255,255,255,0.72);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 8px;
}
.footer-bottom {
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  font-family: var(--font-mono);
}

.badge-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  border: 1px solid var(--line-strong);
  padding: 5px 10px;
  border-radius: 2px;
  color: var(--ink-soft);
}

/* Page hero (interior pages) */
.page-hero {
  padding: 46px 0 40px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(var(--paper-soft), var(--paper-soft));
  position: relative;
  overflow: hidden;
}
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero-mark {
  position: absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%);
  width: 260px;
  opacity: 0.5;
  z-index: 1;
}

.bp-num {
  font-family: var(--font-mono);
  font-size: 12px;
  fill: var(--blue-deep);
  font-weight: 500;
}
.bp-sub {
  font-family: var(--font-mono);
  font-size: 10.5px;
  fill: var(--ink-soft);
}

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    animation: rise 0.6s ease both;
  }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}