:root {
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --primary-light: #ccfbf1;
  --accent: #2563eb;
  --danger: #dc2626;
  --warning: #d97706;
  --success: #16a34a;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #ffffff;
  --bg-soft: #f4f9f9;
  --border: #e5e7eb;
  --radius: 14px;
  --shadow: 0 4px 20px rgba(15, 118, 110, 0.08);
  --font-head: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 600; line-height: 1.25; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s ease;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(13,148,136,0.3); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-block { width: 100%; text-align: center; }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-secondary { background: var(--bg-soft); color: var(--text); border: 1px solid var(--border); }

/* ===== Topbar ===== */
.topbar { background: var(--primary-dark); color: #fff; font-size: 0.85rem; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; padding: 8px 20px; flex-wrap: wrap; gap: 6px; }
.topbar-left { display: flex; gap: 20px; }
.emergency { font-weight: 600; }

/* ===== Header / Nav ===== */
.site-header { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 700; font-size: 1.3rem; color: var(--primary-dark); }
.brand-icon { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 10px; background: var(--primary); color: #fff; font-size: 1.3rem; font-weight: 800; }
.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav a { font-weight: 500; color: var(--text); padding: 6px 0; border-bottom: 2px solid transparent; }
.main-nav a:hover, .main-nav a.active { color: var(--primary); border-color: var(--primary); }
.btn-nav-cta { background: var(--primary); color: #fff !important; padding: 10px 22px; border-radius: 50px; border-bottom: none !important; }
.btn-nav-cta:hover { background: var(--primary-dark); }
.nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--primary-dark); }

/* ===== Hero ===== */
.hero { background: linear-gradient(120deg, var(--bg-soft) 55%, var(--primary-light) 100%); padding: 70px 0; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero-tag { display: inline-block; background: var(--primary-light); color: var(--primary-dark); font-weight: 600; font-size: 0.85rem; padding: 6px 16px; border-radius: 50px; margin-bottom: 16px; }
.hero h1 { font-size: 2.6rem; margin-bottom: 18px; color: #0f2b29; }
.hero h1 span { color: var(--primary); }
.hero p { color: var(--text-light); font-size: 1.05rem; margin-bottom: 28px; max-width: 520px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 30px; }
.hero-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-top: 40px; }
.stat-box { text-align: center; }
.stat-box .num { font-family: var(--font-head); font-size: 1.8rem; font-weight: 700; color: var(--primary); }
.stat-box .label { font-size: 0.85rem; color: var(--text-light); }

/* ===== Sections ===== */
.section { padding: 70px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 46px; }
.section-tag { display: inline-block; color: var(--primary); font-weight: 700; letter-spacing: 1px; text-transform: uppercase; font-size: 0.8rem; margin-bottom: 10px; }
.section-head h2 { font-size: 2rem; margin-bottom: 12px; }
.section-head p { color: var(--text-light); }

/* ===== Cards grid ===== */
.grid { display: grid; gap: 26px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 30px; transition: transform 0.2s ease, box-shadow 0.2s ease; border: 1px solid var(--border); }
.card:hover { transform: translateY(-6px); box-shadow: 0 14px 30px rgba(15,118,110,0.14); }
.card-icon { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; background: var(--primary-light); border-radius: 14px; margin-bottom: 18px; }
.card h3 { margin-bottom: 10px; font-size: 1.15rem; }
.card p { color: var(--text-light); font-size: 0.95rem; }

/* ===== Doctor card ===== */
.doctor-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; border: 1px solid var(--border); display: flex; flex-direction: column; }
.doctor-photo { height: 220px; background: var(--primary-light); display: flex; align-items: center; justify-content: center; font-size: 4rem; color: var(--primary-dark); overflow: hidden; }
.doctor-photo img { width: 100%; height: 100%; object-fit: cover; }
.doctor-info { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.doctor-info h3 { margin-bottom: 4px; }
.doctor-dept { color: var(--primary); font-weight: 600; font-size: 0.85rem; margin-bottom: 10px; }
.doctor-meta { font-size: 0.85rem; color: var(--text-light); margin-bottom: 16px; display: flex; flex-direction: column; gap: 4px; }
.doctor-actions { margin-top: auto; display: flex; gap: 10px; }

/* ===== Filter bar ===== */
.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 34px; justify-content: center; }
.filter-chip { padding: 8px 18px; border-radius: 50px; border: 1px solid var(--border); background: #fff; font-size: 0.9rem; font-weight: 500; cursor: pointer; }
.filter-chip.active, .filter-chip:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== Why Us ===== */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.why-item { text-align: center; }
.why-item .icon { width: 70px; height: 70px; margin: 0 auto 16px; background: #fff; border-radius: 50%; box-shadow: var(--shadow); display: flex; align-items: center; justify-content: center; font-size: 1.8rem; }

/* ===== Testimonials ===== */
.testimonial-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px; border: 1px solid var(--border); }
.testimonial-stars { color: #f59e0b; margin-bottom: 12px; }
.testimonial-name { font-weight: 700; margin-top: 14px; }

/* ===== CTA banner ===== */
.cta-banner { background: linear-gradient(120deg, var(--primary-dark), var(--primary)); color: #fff; border-radius: var(--radius); padding: 50px; text-align: center; margin: 0 20px; }
.cta-banner h2 { color: #fff; margin-bottom: 14px; }
.cta-banner p { color: rgba(255,255,255,0.85); margin-bottom: 26px; }
.cta-banner .btn-primary { background: #fff; color: var(--primary-dark); }
.cta-banner .btn-primary:hover { background: #f0fdfa; }

/* ===== Forms ===== */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 8px; font-size: 0.92rem; }
.form-control {
  width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: 10px;
  font-family: var(--font-body); font-size: 0.95rem; background: #fff; color: var(--text);
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(13,148,136,0.15); }
textarea.form-control { resize: vertical; min-height: 110px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 40px; border: 1px solid var(--border); }

.alert { padding: 14px 20px; border-radius: 10px; margin-bottom: 22px; font-size: 0.92rem; }
.alert-success { background: #dcfce7; color: #166534; }
.alert-error { background: #fee2e2; color: #991b1b; }
.alert-info { background: var(--primary-light); color: var(--primary-dark); }

/* ===== Steps (appointment) ===== */
.step-indicator { display: flex; justify-content: center; gap: 30px; margin-bottom: 40px; flex-wrap: wrap; }
.step-indicator .step { display: flex; align-items: center; gap: 10px; color: var(--text-light); font-weight: 600; font-size: 0.9rem; }
.step-indicator .step .circle { width: 30px; height: 30px; border-radius: 50%; background: var(--bg-soft); display: flex; align-items: center; justify-content: center; }
.step-indicator .step.active { color: var(--primary-dark); }
.step-indicator .step.active .circle { background: var(--primary); color: #fff; }

.slot-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(105px, 1fr)); gap: 10px; margin-top: 10px; }
.slot-btn { padding: 10px 8px; text-align: center; border: 1px solid var(--border); border-radius: 8px; background: #fff; cursor: pointer; font-size: 0.85rem; font-weight: 600; }
.slot-btn:hover { border-color: var(--primary); }
.slot-btn.selected { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== Badges ===== */
.badge { display: inline-block; padding: 4px 12px; border-radius: 50px; font-size: 0.78rem; font-weight: 700; }
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-confirmed { background: #dbeafe; color: #1e40af; }
.badge-cancelled { background: #fee2e2; color: #991b1b; }
.badge-completed { background: #dcfce7; color: #166534; }

/* ===== Footer ===== */
.site-footer { background: #0b2b29; color: #cbd8d6; padding-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr 1.2fr; gap: 30px; padding-bottom: 40px; }
.footer-col h4 { color: #fff; margin-bottom: 16px; font-size: 1rem; }
.footer-col a, .footer-col p { display: block; color: #a9bdba; margin-bottom: 10px; font-size: 0.92rem; }
.footer-col a:hover { color: #fff; }
.footer-brand { color: #fff; margin-bottom: 14px; }
.social-links { display: flex; gap: 14px; margin-top: 10px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; text-align: center; font-size: 0.85rem; color: #839c98; }

/* ===== Misc pages (about/contact) ===== */
.page-hero { background: var(--bg-soft); padding: 50px 0; text-align: center; }
.page-hero h1 { font-size: 2.2rem; margin-bottom: 8px; }
.breadcrumb { color: var(--text-light); font-size: 0.9rem; }
.breadcrumb a { color: var(--primary); }
.info-block { display: flex; gap: 18px; align-items: flex-start; margin-bottom: 26px; }
.info-block .icon { width: 48px; height: 48px; background: var(--primary-light); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; flex-shrink: 0; }
.map-wrap { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.map-wrap iframe { width: 100%; height: 320px; border: 0; display: block; }

@media (max-width: 900px) {
  .hero-grid, .form-row, .why-grid, .grid-4, .grid-3, .grid-2, .footer-grid { grid-template-columns: 1fr 1fr; }
  .why-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .main-nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px; box-shadow: 0 10px 20px rgba(0,0,0,0.08); gap: 16px; }
  .main-nav.open { display: flex; }
  .hero-grid, .form-row, .grid-4, .grid-3, .grid-2, .footer-grid, .why-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  .cta-banner { margin: 0; border-radius: 0; padding: 40px 20px; }
  .hide-sm { display: none; }
}