/* NutriCal Admin Portal — Clean, Responsive Stylesheet (Vanilla CSS, Zero External Dependencies) */

:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --border-color: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --primary: #10b981;
  --primary-hover: #059669;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --warning: #f59e0b;
  --info: #3b82f6;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* Header & Nav */
.admin-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-main);
}
.brand-badge {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 14px;
  transition: all 0.15s ease;
}
.nav-link:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-main);
  text-decoration: none;
}
.nav-link.active {
  background-color: rgba(16, 185, 129, 0.2);
  color: var(--primary);
  font-weight: 600;
}

.user-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-email {
  font-size: 13px;
  color: var(--text-muted);
}

.role-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  text-transform: uppercase;
}
.role-tag.admin {
  background-color: rgba(239, 68, 68, 0.2);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.4);
}
.role-tag.viewer {
  background-color: rgba(59, 130, 246, 0.2);
  color: var(--info);
  border: 1px solid rgba(59, 130, 246, 0.4);
}

/* Layout Body */
.admin-main {
  flex: 1;
  max-width: 1300px;
  width: 100%;
  margin: 0 auto;
  padding: 28px 20px 48px;
}

/* Flash Messages */
.flash-container {
  margin-bottom: 24px;
}
.flash-message {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.flash-success {
  background-color: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #6ee7b7;
}
.flash-error {
  background-color: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
}
.flash-warning {
  background-color: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #fde68a;
}
.flash-info {
  background-color: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.4);
  color: #93c5fd;
}
.flash-close {
  background: none;
  border: none;
  color: inherit;
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
}

/* Cards & Containers */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
}
.card-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 18px;
}
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  padding: 10px 14px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.15s ease;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
  transition: background-color 0.15s ease;
  text-decoration: none;
}
.btn-primary {
  background-color: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background-color: var(--primary-hover);
  text-decoration: none;
}
.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-main);
}
.btn-secondary:hover {
  background-color: #475569;
  text-decoration: none;
}
.btn-danger {
  background-color: var(--danger);
  color: #fff;
}
.btn-danger:hover {
  background-color: var(--danger-hover);
  text-decoration: none;
}
.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13.5px;
}
.data-table th {
  background-color: rgba(15, 23, 42, 0.6);
  color: var(--text-muted);
  font-weight: 600;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}
.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  vertical-align: top;
}
.data-table tr:hover td {
  background-color: rgba(51, 65, 85, 0.3);
}

/* Badges & Chips */
.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11.5px;
  font-weight: 600;
  border-radius: 4px;
}
.badge-success { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.badge-warning { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.badge-danger  { background: rgba(239, 68, 68, 0.2); color: #f87171; }
.badge-info    { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.badge-neutral { background: var(--bg-tertiary); color: var(--text-muted); }

/* JSON code viewer */
.code-preview {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
  font-size: 12px;
  background-color: #0b1120;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: #38bdf8;
  max-width: 380px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-muted);
}
.pagination-links {
  display: flex;
  gap: 6px;
}

/* Login Center Container */
.auth-wrapper {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.auth-card {
  width: 100%;
  max-width: 420px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}
.auth-header {
  text-align: center;
  margin-bottom: 28px;
}
.auth-header h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.5px;
}
.auth-header p {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Footer */
.admin-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 16px 20px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}

/* Responsiveness */
@media (max-width: 860px) {
  .header-container {
    height: auto;
    padding: 12px 16px;
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
  .nav-links {
    flex-wrap: wrap;
    width: 100%;
  }
  .user-section {
    width: 100%;
    justify-content: space-between;
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
  }
}