/* Shared shell for admin + brand portals.
   Palette: black / white / beige / grey. */
:root {
  --shell-bg: #f4efe7;
  --shell-surface: #ffffff;
  --shell-ink: #191919;
  --shell-muted: #6f6a63;
  --shell-line: #d8d1c7;
  --shell-line-input: #8a8683; /* 3.6:1 on white — form-control borders (WCAG 1.4.11) */
  --shell-soft: #efe8de;
  --shell-soft-2: #e6ddd0;
  --shell-accent: #111111;
  --shell-accent-2: #6f6253;
  --shell-shadow: 0 18px 50px rgba(25, 25, 25, 0.12);
}

.shell-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #f6f1ea 0%, #f0ebe4 45%, #f8f7f5 100%);
  color: var(--shell-ink);
}

.shell-layout {
  display: flex;
  min-height: 100vh;
}

.shell-sidebar {
  width: 280px;
  background: linear-gradient(180deg, #141414 0%, #23211f 100%);
  color: #fff;
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  box-shadow: 10px 0 30px rgba(0, 0, 0, 0.08);
}

.shell-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.shell-brand img {
  height: 28px;
  width: auto;
  object-fit: contain;
}

.shell-brand-text h2,
.shell-brand-text p {
  margin: 0;
}

.shell-brand-text h2 {
  font-size: 18px;
  letter-spacing: 0.02em;
}

.shell-brand-text p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 12px;
  margin-top: 4px;
}

.shell-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.shell-nav a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.82);
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.shell-nav a:hover,
.shell-nav a.active {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.08);
}

.shell-nav .danger {
  margin-top: auto;
  background: rgba(255, 255, 255, 0.06);
}

.shell-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.shell-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 28px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(216, 209, 199, 0.8);
}

.shell-header h1 {
  margin: 0;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.shell-header .shell-subtitle {
  margin-top: 6px;
  color: var(--shell-muted);
  font-size: 13px;
}

.shell-user {
  font-size: 14px;
  color: var(--shell-muted);
  background: var(--shell-soft);
  border: 1px solid var(--shell-line);
  padding: 9px 14px;
  border-radius: 999px;
}

.shell-content {
  padding: 34px 28px 50px;
}

.shell-card {
  background: var(--shell-surface);
  border: 1px solid rgba(216, 209, 199, 0.8);
  border-radius: 20px;
  box-shadow: var(--shell-shadow);
  overflow: hidden;
}

.shell-auth-card {
  max-width: 480px;
  margin: 64px auto;
  padding: 34px 30px;
  background: var(--shell-surface);
  border-radius: 20px;
  border: 1px solid rgba(216, 209, 199, 0.8);
  box-shadow: var(--shell-shadow);
}

.shell-auth-card h2 {
  margin: 0 0 8px;
  font-size: 28px;
  letter-spacing: -0.03em;
}

.shell-auth-card .muted {
  color: var(--shell-muted);
  margin-bottom: 24px;
  font-size: 14px;
}

.shell-auth-link-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.shell-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 16px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  border: 1px solid var(--shell-line);
  color: var(--shell-ink);
  background: #fff;
}

.shell-btn.primary {
  background: var(--shell-accent);
  color: #fff;
  border-color: var(--shell-accent);
}

.shell-btn.secondary {
  background: var(--shell-soft);
  color: var(--shell-ink);
}

.shell-brand-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--shell-soft);
  color: var(--shell-ink);
  border: 1px solid var(--shell-line);
  font-size: 13px;
  font-weight: 700;
}

@media (max-width: 900px) {
  .shell-layout {
    flex-direction: column;
  }

  .shell-sidebar {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .shell-header,
  .shell-content {
    padding-left: 18px;
    padding-right: 18px;
  }

  .shell-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .shell-auth-card {
    margin: 36px 16px;
    padding: 24px 18px;
  }
}