/* MedBuddy Design System v1.0 — Author: Antoine */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700;800&display=swap');

:root {
  --teal: #00BCD4;
  --teal-dark: #0097A7;
  --teal-light: #E0F7FA;
  --blue: #1565C0;
  --blue-dark: #0D47A1;
  --blue-light: #E3F2FD;
  --green: #00E676;
  --green-med: #00C853;
  --bg: #F8FAFC;
  --bg2: #EEF2F7;
  --surface: #FFFFFF;
  --surface2: #F0F4F8;
  --text: #0D1B2A;
  --text2: #4A5568;
  --text3: #718096;
  --border: #E2E8F0;
  --shadow: 0 4px 24px rgba(0,188,212,0.10);
  --shadow-lg: 0 8px 40px rgba(21,101,192,0.12);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

h1, h2, h3, h4, h5 {
  font-family: 'Space Grotesk', sans-serif;
  line-height: 1.2;
  font-weight: 700;
}

/* ── NAVBAR ── */
.navbar {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
}
.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem; font-weight: 800;
  text-decoration: none; color: var(--text);
  display: flex; align-items: center; gap: 6px;
}
.nav-logo .accent { color: var(--teal); }
.nav-logo .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--green); display: inline-block;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%,100%{transform:scale(1);opacity:1}
  50%{transform:scale(1.5);opacity:0.7}
}
.nav-links { display: flex; align-items: center; gap: 0.5rem; }
.nav-links a {
  padding: 6px 14px; border-radius: 8px;
  font-size: 0.875rem; font-weight: 500;
  text-decoration: none; color: var(--text2);
  transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  background: var(--teal-light); color: var(--teal-dark);
}
.nav-right { display: flex; align-items: center; gap: 0.75rem; }
.lang-switcher {
  display: flex; gap: 2px;
  background: var(--bg2); border-radius: 8px; padding: 2px;
}
.lang-btn {
  padding: 4px 10px; border: none; cursor: pointer;
  border-radius: 6px; font-size: 0.8rem; font-weight: 600;
  background: transparent; color: var(--text3);
  transition: var(--transition);
}
.lang-btn.active { background: var(--surface); color: var(--teal-dark); box-shadow: 0 1px 4px rgba(0,0,0,0.1); }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 12px; border: none;
  font-family: 'Inter', sans-serif; font-size: 0.95rem; font-weight: 600;
  cursor: pointer; text-decoration: none;
  transition: var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--teal), var(--blue));
  color: white;
  box-shadow: 0 4px 15px rgba(0,188,212,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,188,212,0.45);
}
.btn-secondary {
  background: var(--surface); color: var(--blue);
  border: 2px solid var(--border);
}
.btn-secondary:hover { border-color: var(--teal); background: var(--teal-light); }
.btn-ghost { background: transparent; color: var(--teal); }
.btn-lg { padding: 16px 32px; font-size: 1.05rem; border-radius: 14px; }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; border-radius: 8px; }

/* ── CARDS ── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  transition: var(--transition);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.card-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: linear-gradient(135deg, var(--teal-light), var(--blue-light));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 1rem;
}

/* ── HERO ── */
.hero {
  padding: 80px 2rem 60px;
  text-align: center;
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(ellipse at 50% 0%, rgba(0,188,212,0.08) 0%, transparent 60%);
  pointer-events: none;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 16px; border-radius: 99px;
  background: var(--teal-light); color: var(--teal-dark);
  font-size: 0.8rem; font-weight: 600; margin-bottom: 1.5rem;
}
.hero-title { font-size: clamp(2rem, 5vw, 3.5rem); margin-bottom: 1rem; }
.hero-title .highlight {
  background: linear-gradient(135deg, var(--teal), var(--blue));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text2); max-width: 600px; margin: 0 auto 2rem;
}
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── STATS ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem; padding: 2rem; max-width: 900px; margin: 0 auto;
}
.stat-item {
  text-align: center; padding: 1.5rem 1rem;
  background: var(--surface); border-radius: var(--radius);
  border: 1px solid var(--border);
}
.stat-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800; color: var(--teal-dark);
  display: block;
}
.stat-label { font-size: 0.8rem; color: var(--text3); font-weight: 500; margin-top: 4px; }

/* ── SECTION ── */
.section { padding: 80px 2rem; }
.section-alt { background: var(--bg2); }
.container { max-width: 1200px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 3rem; }
.section-tag {
  display: inline-block; padding: 4px 12px; border-radius: 99px;
  background: var(--blue-light); color: var(--blue);
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; margin-bottom: 0.75rem;
}
.section-title { font-size: clamp(1.75rem, 3vw, 2.5rem); margin-bottom: 0.75rem; }
.section-desc { color: var(--text2); max-width: 550px; margin: 0 auto; }

/* ── ROLE SWITCHER ── */
.role-switcher {
  display: flex; gap: 0.5rem; flex-wrap: wrap;
  justify-content: center; margin-bottom: 3rem;
  padding: 0.5rem; background: var(--bg2);
  border-radius: 99px; display: inline-flex;
}
.role-btn {
  padding: 8px 18px; border-radius: 99px; border: none;
  font-size: 0.85rem; font-weight: 600; cursor: pointer;
  background: transparent; color: var(--text2);
  transition: var(--transition); white-space: nowrap;
}
.role-btn.active {
  background: var(--surface); color: var(--teal-dark);
  box-shadow: 0 2px 8px rgba(0,188,212,0.2);
}
.role-content { display: none; }
.role-content.active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:translateY(0)} }

/* ── FEEDBACK FORM ── */
.feedback-section { padding: 60px 2rem; }
.feedback-form {
  max-width: 600px; margin: 0 auto;
  background: var(--surface); border-radius: var(--radius);
  border: 1px solid var(--border); padding: 2rem;
  box-shadow: var(--shadow);
}
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--text2); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 10px 14px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif; font-size: 0.9rem;
  background: var(--bg); color: var(--text);
  transition: var(--transition); outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--teal); background: white; }
.form-group textarea { min-height: 120px; resize: vertical; }

/* ── FOOTER ── */
.footer {
  background: var(--text); color: rgba(255,255,255,0.6);
  padding: 3rem 2rem 2rem;
}
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; max-width: 1200px; margin: 0 auto 2rem; }
.footer-brand .nav-logo { color: white; margin-bottom: 0.75rem; }
.footer-brand p { font-size: 0.875rem; line-height: 1.7; }
.footer-col h4 { color: white; font-size: 0.9rem; font-weight: 700; margin-bottom: 1rem; }
.footer-col a { display: block; color: rgba(255,255,255,0.55); font-size: 0.85rem; text-decoration: none; margin-bottom: 0.5rem; transition: color 0.2s; }
.footer-col a:hover { color: var(--teal); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 1.5rem; max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; font-size: 0.8rem; }

/* ── PARTICLES CANVAS ── */
#particles-canvas {
  position: fixed; top: 0; left: 0; z-index: -1;
  width: 100%; height: 100%; pointer-events: none;
  opacity: 0.4;
}

/* ── COUNTER ANIMATION ── */
.counter { transition: all 1.5s ease; }

/* ── SEARCH BOX ── */
.search-box {
  display: flex; gap: 0.5rem; max-width: 600px; margin: 0 auto;
  background: var(--surface); border: 2px solid var(--border);
  border-radius: 14px; padding: 6px; transition: var(--transition);
}
.search-box:focus-within { border-color: var(--teal); box-shadow: 0 0 0 4px rgba(0,188,212,0.1); }
.search-box input {
  flex: 1; border: none; background: none; padding: 8px 12px;
  font-size: 1rem; color: var(--text); outline: none;
}
.search-results {
  margin-top: 1rem; max-width: 600px; margin: 1rem auto 0;
}
.search-result-item {
  padding: 1rem; background: var(--surface); border-radius: 12px;
  border: 1px solid var(--border); margin-bottom: 0.5rem;
  animation: fadeIn 0.3s ease;
}
.result-domain {
  font-size: 0.75rem; font-weight: 600; color: var(--teal-dark);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.result-title { font-weight: 700; margin: 4px 0; }
.result-desc { font-size: 0.875rem; color: var(--text2); }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .navbar { padding: 0 1rem; }
  .nav-links { display: none; }
  .hero { padding: 60px 1rem 40px; }
  .section { padding: 50px 1rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn-lg { width: 100%; max-width: 320px; justify-content: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .role-switcher { gap: 0.25rem; padding: 0.3rem; }
  .role-btn { padding: 6px 12px; font-size: 0.8rem; }
}