:root {
  --bg: #f4fbfb;
  --ink: #173142;
  --muted: #617281;
  --primary: #0b6271;
  --primary-dark: #083f50;
  --gold: #d8a43f;
  --card: #ffffff;
  --line: #cfe1e4;
  --danger: #b42318;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
}

a {
  color: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 6vw;
  border-bottom: 1px solid rgba(255,255,255,.7);
  background: rgba(244,251,251,.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
  color: var(--muted);
}

nav a {
  text-decoration: none;
  font-weight: 700;
}

.hero {
  position: relative;
  min-height: calc(100vh - 70px);
  overflow: hidden;
}

.hero > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(244,251,251,.98), rgba(244,251,251,.75) 48%, rgba(244,251,251,.2));
}

.hero-content {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(280px, 390px);
  align-items: center;
  gap: 48px;
  max-width: 1180px;
  min-height: calc(100vh - 70px);
  padding: 110px 6vw 90px;
}

.hero-copy {
  min-width: 0;
}

.doctor-card {
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.75);
  border-radius: 12px;
  background: rgba(255,255,255,.86);
  box-shadow: 0 28px 70px rgba(22,57,72,.2);
}

.doctor-card img {
  position: static;
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.doctor-card div {
  padding: 18px;
  border-top: 4px solid var(--gold);
}

.doctor-card strong,
.doctor-card span {
  display: block;
}

.doctor-card strong {
  color: var(--primary-dark);
  font-size: 18px;
}

.doctor-card span {
  margin-top: 5px;
  color: var(--muted);
  font-weight: 700;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 16px;
  color: #5c4617;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1, h2, h3 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  color: var(--primary);
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1;
}

h1 span {
  display: block;
  margin-top: 12px;
  color: var(--ink);
  font-size: clamp(24px, 3vw, 34px);
}

h2 {
  color: var(--primary);
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.08;
}

.lead, .section p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.hero-actions, .row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--primary);
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.button.warm {
  border-color: var(--gold);
  background: var(--gold);
  color: #172b33;
}

.button.ghost {
  background: transparent;
}

.button.danger {
  border-color: #f4c7c3;
  background: #fff5f4;
  color: var(--danger);
}

.contact-strip {
  display: grid;
  gap: 10px;
  margin-top: 28px;
  color: var(--muted);
  font-weight: 700;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  padding: 22px 6vw;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--card);
}

.stats article {
  padding: 20px;
}

.stats strong {
  display: block;
  color: var(--primary);
  font-size: 36px;
}

.stats span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 76px 6vw;
}

.grid-two {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 54px;
}

.cards, .triple {
  display: grid;
  gap: 18px;
}

.cards {
  grid-template-columns: repeat(2, 1fr);
}

.card, .admin-panel, .install-card, .admin-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  box-shadow: 0 20px 50px rgba(22,57,72,.08);
}

.card {
  padding: 24px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.tags span {
  padding: 8px 12px;
  border-radius: 8px;
  background: #dff2f0;
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 800;
}

.dark-section {
  background: var(--primary-dark);
  color: #fff;
}

.training-section {
  background: linear-gradient(180deg, #ffffff, #edf8f7);
}

.training-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.training-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 100%;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 20px 48px rgba(22,57,72,.09);
}

.training-card h3 {
  color: var(--primary-dark);
  font-size: 22px;
  line-height: 1.25;
}

.course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.course-meta span {
  padding: 7px 10px;
  border-radius: 8px;
  background: #dff2f0;
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 800;
}

.course-box {
  display: grid;
  gap: 5px;
  padding: 12px;
  border-left: 3px solid var(--gold);
  background: #f7fbfb;
}

.course-box b {
  color: var(--primary);
}

.course-box span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.fee-note {
  margin: 0;
  color: #6a4a0e !important;
  font-weight: 800;
}

.dark-section h2, .dark-section h3 {
  color: #fff;
}

.dark-section p, .dark-section span {
  color: rgba(255,255,255,.74);
}

.section-head {
  max-width: 820px;
  margin-bottom: 30px;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline article {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 18px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 8px;
  background: rgba(255,255,255,.08);
}

.timeline span {
  min-width: 150px;
  color: var(--gold);
  font-weight: 800;
}

.triple {
  grid-template-columns: repeat(3, 1fr);
}

ul {
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.65;
}

.two {
  grid-template-columns: repeat(2, 1fr);
  margin-top: 18px;
}

.publication {
  margin-top: 16px;
  padding-left: 14px;
  border-left: 3px solid var(--gold);
}

.publication b, .publication span {
  display: block;
}

.publication span {
  margin-top: 5px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.publications-section {
  background: #eef8f8;
}

.paper-search {
  max-width: 760px;
  margin-top: 16px;
}

.paper-list {
  display: grid;
  gap: 16px;
}

.paper-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 42px rgba(22,57,72,.08);
}

.paper-card h3 {
  color: var(--primary-dark);
  font-size: 20px;
  line-height: 1.35;
}

.paper-card .authors {
  margin: 8px 0 0;
  color: #2f5e6b;
  font-weight: 800;
}

.paper-card .journal {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.paper-actions {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
}

details {
  margin-top: 12px;
}

summary {
  color: var(--primary);
  cursor: pointer;
  font-weight: 800;
}

.full-paper {
  margin-top: 10px;
  padding: 14px;
  border-radius: 8px;
  background: #f6fbfb;
  color: var(--muted);
  line-height: 1.65;
}

.contact-section {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 44px;
  background: var(--card);
}

.contact-form, .admin-form {
  display: grid;
  gap: 14px;
}

input, textarea, select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 10px 12px;
  color: var(--ink);
  font: inherit;
}

textarea {
  min-height: 120px;
}

.setup-warning {
  padding: 12px 6vw;
  background: #fff3cd;
  color: #604600;
  font-weight: 700;
}

.install-page, .admin-body {
  min-height: 100vh;
  padding: 32px;
}

.install-card {
  max-width: 620px;
  margin: 8vh auto;
  padding: 30px;
}

.alert {
  padding: 12px;
  border-radius: 8px;
  font-weight: 700;
}

.alert.success {
  background: #e6f6ed;
  color: #176236;
}

.alert.error {
  background: #fff0ef;
  color: var(--danger);
}

.small {
  color: var(--muted);
  font-size: 13px;
}

.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0 28px;
}

.admin-tabs-main {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.admin-tabs-main a {
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--primary);
  font-weight: 800;
  text-decoration: none;
}

.admin-tabs-main a.active {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.admin-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 22px;
}

.admin-panel {
  padding: 20px;
}

.admin-layout .enquiries {
  grid-column: 1 / -1;
}

.publication-admin {
  grid-template-columns: 430px 1fr;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.large-textarea {
  min-height: 220px;
}

.paper-admin-item b {
  color: var(--primary-dark);
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

label.check {
  display: flex;
  align-items: center;
}

label.check input {
  width: auto;
  min-height: auto;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.tabs a {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
}

.tabs a.active {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.admin-item {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 12px;
  padding: 16px;
}

.admin-item span, .admin-item small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
}

.admin-item p {
  margin: 8px 0;
  color: var(--muted);
}

@media (max-width: 900px) {
  .topbar, .timeline article, .admin-header, .admin-item {
    align-items: flex-start;
    flex-direction: column;
  }

  .grid-two, .contact-section, .admin-layout {
    grid-template-columns: 1fr;
  }

  .paper-card {
    grid-template-columns: 1fr;
  }

  .cards, .two, .triple, .stats {
    grid-template-columns: 1fr;
  }

  .training-grid {
    grid-template-columns: 1fr;
  }

  .hero-content {
    padding-top: 80px;
    grid-template-columns: 1fr;
  }

  .doctor-card {
    max-width: 360px;
  }
}