:root {
  --ink: #16211f;
  --muted: #6f7e7a;
  --paper: #f5f1e9;
  --panel: #ffffff;
  --line: #ded8cc;
  --primary: #0f6f63;
  --primary-dark: #0a473f;
  --accent: #c7853e;
  --danger: #b44e4e;
}

html {
  min-height: 100%;
  font-size: 15px;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(140deg, rgba(15,111,99,.08), transparent 34%),
    linear-gradient(320deg, rgba(199,133,62,.16), transparent 36%),
    var(--paper);
  font-family: "Segoe UI", Arial, sans-serif;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 272px minmax(0, 1fr);
}

.side-nav {
  position: sticky;
  top: 0;
  min-height: 100vh;
  padding: 26px 20px;
  display: flex;
  flex-direction: column;
  background: #12312d;
  color: #f7f1e8;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  text-decoration: none;
  margin-bottom: 34px;
}

.brand-lockup strong {
  display: block;
  font-size: 1.3rem;
}

.brand-lockup small {
  color: #c6d5cf;
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: var(--accent);
  color: #fff;
  font-weight: 900;
  font-size: 1.5rem;
}

.nav-stack {
  display: grid;
  gap: 10px;
}

.nav-stack a {
  padding: 12px 14px;
  border-radius: 12px;
  color: #e8f0ec;
  text-decoration: none;
  font-weight: 700;
}

.nav-stack a:hover {
  background: rgba(255,255,255,.11);
  color: #fff;
}

.session-panel {
  margin-top: auto;
  padding: 16px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 18px;
  background: rgba(255,255,255,.08);
}

.session-name {
  display: block;
  font-weight: 800;
}

.role-pill,
.status-pill {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.78);
  color: var(--primary-dark);
  font-weight: 800;
}

.content-shell {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.top-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 28px 34px 12px;
}

.top-strip h1 {
  margin: 0;
  font-size: clamp(1.65rem, 2.6vw, 2.55rem);
  font-weight: 900;
}

.eyebrow {
  color: var(--primary);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.page-surface {
  width: min(1180px, calc(100% - 48px));
  margin: 16px auto 32px;
  flex: 1;
}

.app-footer {
  padding: 0 34px 24px;
  color: var(--muted);
}

.btn {
  border-radius: 11px;
  font-weight: 800;
}

.btn-primary,
.btn-info,
.btn-success {
  background: var(--primary);
  border-color: var(--primary);
}

.btn-primary:hover,
.btn-info:hover,
.btn-success:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.btn-warning {
  background: var(--accent);
  border-color: var(--accent);
}

.btn-danger {
  background: var(--danger);
  border-color: var(--danger);
}

a.btn,
button.btn,
.btn,
.btn *,
a.btn:hover,
button.btn:hover,
.btn:hover * {
  color: #fff !important;
}

a {
  color: var(--primary);
}

.card {
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 16px 42px rgba(38, 58, 51, .1);
}

.card-header,
.bg-dark,
.bg-primary {
  background: var(--primary) !important;
  color: #fff !important;
}

.form-control,
.form-select {
  border-color: var(--line);
  border-radius: 12px;
  padding: .72rem .9rem;
}

.form-control:focus,
.form-select:focus,
.form-check-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 .22rem rgba(15,111,99,.16);
}

.hero-panel {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 22px;
  margin-bottom: 34px;
}

.hero-copy {
  padding: 36px;
  border-radius: 26px;
  color: #fff;
  background:
    linear-gradient(120deg, rgba(18,49,45,.95), rgba(18,49,45,.66)),
    url("https://images.unsplash.com/photo-1566073771259-6a8506099945?q=80&w=1600") center/cover;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  justify-content: end;
}

.hero-copy h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 900;
  margin-bottom: 12px;
}

.metric-board {
  display: grid;
  gap: 16px;
}

.metric-tile {
  padding: 22px;
  border-radius: 20px;
  color: #fff;
  background: var(--primary-dark);
}

.metric-tile.alt {
  color: #21170d;
  background: #e0ad61;
}

.metric-tile strong {
  display: block;
  font-size: 2.2rem;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .side-nav {
    position: static;
    min-height: auto;
  }

  .hero-panel {
    grid-template-columns: 1fr;
  }
}