/* ============================================================
   EOLODENT — Design System
   Navy + electric cyan, premium dental. Montserrat + Open Sans.
   ============================================================ */

:root {
  /* Brand palette */
  --navy-900: #0c0c24;
  --navy-850: #101038;
  --navy-800: #14144a;
  --navy-700: #1a1a6e;   /* primary */
  --navy-600: #1a237e;   /* royal — CTA */
  --navy-500: #2a2aa0;
  --ink-black: #0c0c14;

  --cyan: #00bfff;        /* electric accent */
  --cyan-bright: #25ccff;
  --cyan-soft: #7fe0ff;
  --cyan-glow: rgba(0, 191, 255, 0.35);

  --ink: #1d2230;         /* body text on light */
  --ink-soft: #545b6e;    /* muted text */
  --line: #e6e9f2;        /* hairlines */
  --line-soft: #eef1f8;

  --paper: #ffffff;
  --paper-2: #f6f8fc;     /* off-white section */
  --paper-3: #eef2fa;

  /* Typography */
  --font-head: "Montserrat", system-ui, sans-serif;
  --font-body: "Open Sans", system-ui, sans-serif;
  --font-accent: "Fraunces", Georgia, serif; /* italic elegance, echoing logo */

  /* Radii & shadow */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 34px;
  --r-pill: 999px;

  --sh-sm: 0 2px 8px rgba(16, 16, 56, 0.06);
  --sh-md: 0 10px 30px rgba(16, 16, 56, 0.10);
  --sh-lg: 0 24px 60px rgba(16, 16, 56, 0.16);
  --sh-cyan: 0 14px 40px rgba(0, 191, 255, 0.28);

  --maxw: 1200px;
  --gutter: clamp(20px, 5vw, 64px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--navy-700);
  text-wrap: balance;
}

p { margin: 0 0 1em; text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }

.eo-accent { font-family: var(--font-accent); font-style: italic; font-weight: 500; }
.cyan { color: var(--cyan); }

/* Layout helpers */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(64px, 9vw, 130px); }
.eyebrow {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 18px;
  display: flex; align-items: center; gap: 12px;
}
.eyebrow::before { content: ""; width: 30px; height: 2px; background: var(--cyan); display: inline-block; }
.eyebrow.center { justify-content: center; }
.section-head { max-width: 720px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { font-size: clamp(2rem, 4.4vw, 3.3rem); }
.section-head .lead { font-size: 1.12rem; color: var(--ink-soft); margin-top: 18px; }

/* ---------------- Buttons ---------------- */
.btn {
  --bg: var(--navy-600);
  --fg: #fff;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--font-head); font-weight: 700; font-size: 0.96rem;
  letter-spacing: 0.01em;
  padding: 15px 28px;
  border-radius: var(--r-pill);
  border: 1.5px solid transparent;
  background: var(--bg); color: var(--fg);
  transition: transform .18s ease, box-shadow .25s ease, background .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { --bg: var(--navy-600); box-shadow: 0 10px 26px rgba(26,35,126,.28); }
.btn--primary:hover { box-shadow: 0 16px 34px rgba(26,35,126,.36); }
.btn--cyan { --bg: var(--cyan); --fg: var(--navy-900); box-shadow: var(--sh-cyan); }
.btn--cyan:hover { background: var(--cyan-bright); }
.btn--ghost { --bg: transparent; --fg: var(--navy-700); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--navy-600); background: var(--paper-2); }
.btn--ghost-light { --bg: transparent; --fg: #fff; border-color: rgba(255,255,255,.35); }
.btn--ghost-light:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn--lg { padding: 18px 36px; font-size: 1.05rem; }
.btn--block { width: 100%; }
.btn--sm { padding: 9px 18px; font-size: 0.85rem; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-head); font-weight: 700; font-size: 0.92rem;
  color: var(--navy-600);
}
.link-arrow svg { transition: transform .2s ease; }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------------- Top banner + Header ---------------- */
.topbar {
  background: var(--navy-700);
  color: #fff;
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.topbar a { display: flex; align-items: center; justify-content: center; gap: 14px; padding: 9px 16px; flex-wrap: wrap; }
.topbar .pulse { display: inline-flex; align-items: center; gap: 8px; color: var(--cyan-soft); }
.topbar .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 0 var(--cyan-glow); animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 var(--cyan-glow); } 70% { box-shadow: 0 0 0 9px rgba(0,191,255,0); } 100% { box-shadow: 0 0 0 0 rgba(0,191,255,0);} }

.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
  transition: box-shadow .25s ease, background .25s;
}
.header.scrolled { box-shadow: var(--sh-sm); background: rgba(255,255,255,0.95); }
.header__inner { display: flex; align-items: center; gap: 28px; height: 76px; }
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  font-family: var(--font-head); font-weight: 600; font-size: 0.95rem;
  color: var(--ink); padding: 10px 14px; border-radius: var(--r-pill);
  transition: color .15s, background .15s;
}
.nav a:hover { color: var(--navy-600); background: var(--paper-2); }
.nav a.active { color: var(--navy-600); }
.header .btn { margin-left: 6px; }

.lang-toggle {
  display: inline-flex; border: 1px solid var(--line); border-radius: var(--r-pill); overflow: hidden;
  font-family: var(--font-head); font-weight: 700; font-size: 0.76rem;
}
.lang-toggle button { background: transparent; border: 0; padding: 7px 12px; color: var(--ink-soft); }
.lang-toggle button.on { background: var(--navy-700); color: #fff; }

.burger { display: none; margin-left: auto; background: transparent; border: 0; padding: 8px; }
.burger span { display: block; width: 24px; height: 2px; background: var(--navy-700); margin: 5px 0; border-radius: 2px; transition: .25s; }

/* Mobile nav */
.mobile-nav { display: none; }

@media (max-width: 940px) {
  .nav, .header .btn.header-cta, .lang-toggle.desktop { display: none; }
  .burger { display: block; }
  .mobile-nav {
    display: block; position: fixed; inset: 0; z-index: 60;
    background: var(--navy-900); color: #fff;
    transform: translateX(100%); transition: transform .3s ease;
    padding: 90px var(--gutter) 40px;
  }
  .mobile-nav.open { transform: none; }
  .mobile-nav a { display: block; font-family: var(--font-head); font-weight: 700; font-size: 1.5rem; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
  .mobile-nav .close { position: absolute; top: 24px; right: var(--gutter); background: transparent; border: 0; color: #fff; font-size: 2rem; }
}

/* ---------------- Logo ---------------- */
.logo { display: inline-flex; align-items: center; gap: 11px; }
.logo__mark { width: 38px; height: 38px; flex: none; }
.logo__txt { display: flex; flex-direction: column; line-height: 1; }
.logo__name { font-family: var(--font-accent); font-style: italic; font-weight: 600; font-size: 1.5rem; color: var(--navy-700); letter-spacing: -0.01em; }
.logo__sub { font-family: var(--font-head); font-weight: 700; font-size: 0.55rem; letter-spacing: 0.34em; color: var(--ink-soft); text-transform: uppercase; margin-top: 3px; }
.logo--light .logo__name { color: #fff; }
.logo--light .logo__sub { color: var(--cyan-soft); }

/* ---------------- Photo slots ---------------- */
image-slot { background: linear-gradient(135deg, var(--paper-3), #dfe6f5); }
.photo-note {
  position: absolute; left: 14px; bottom: 14px; z-index: 2;
  background: rgba(12,12,36,.72); color: #fff; backdrop-filter: blur(4px);
  font-family: var(--font-head); font-weight: 600; font-size: 0.72rem; letter-spacing: .02em;
  padding: 6px 12px; border-radius: var(--r-pill); pointer-events: none;
  display: inline-flex; align-items: center; gap: 7px;
}

/* ---------------- Cards / chips ---------------- */
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-head); font-weight: 700; font-size: 0.74rem; letter-spacing: .12em; text-transform: uppercase;
  padding: 7px 14px; border-radius: var(--r-pill);
  background: rgba(0,191,255,.12); color: var(--navy-600);
}

.fade-up { opacity: 0; transform: translateY(24px); }
.fade-up.in { animation: revealUp .7s cubic-bezier(.2,.7,.2,1) both; }
@keyframes revealUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .fade-up, .fade-up.in { opacity: 1 !important; transform: none !important; animation: none !important; } }

/* utility */
.grid { display: grid; gap: clamp(20px, 2.5vw, 34px); }
.center { text-align: center; }
.mt-s { margin-top: 14px; } .mt-m { margin-top: 28px; } .mt-l { margin-top: 48px; }
.muted { color: var(--ink-soft); }
.flex { display: flex; }
.spread { display: flex; align-items: center; justify-content: space-between; gap: 20px; }