/* ManualFactory Content Delivery System - Modern Responsive Stylesheet */
:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --success: #10b981;
  --success-light: #ecfdf5;
  --warning: #f59e0b;
  --warning-light: #fffbeb;
  --danger: #ef4444;
  --danger-light: #fef2f2;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --text-light: #9ca3af;
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --border-focus: #3b82f6;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.05);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-main);
  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 & Navbar */
.navbar {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  padding: 0.85rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: #111827;
}

.brand-badge {
  font-size: 0.7rem;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 9999px;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.badge-admin {
  background: #fef3c7;
  color: #92400e;
}

.badge-inst {
  background: #dbeafe;
  color: #1e40af;
}

.badge-enduser {
  background: #e0e7ff;
  color: #3730a3;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.925rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
  text-decoration: none;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1.25rem;
  width: 100%;
  flex: 1;
}

.container-narrow {
  max-width: 520px;
  margin: 4rem auto;
  padding: 0 1.25rem;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #111827;
}

/* Grid Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 1.85rem;
  font-weight: 700;
  color: #111827;
  margin-top: 0.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none !important;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
}
.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-secondary {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #334155;
}
.btn-secondary:hover {
  background: #e2e8f0;
}

.btn-success {
  background: var(--success);
  color: #ffffff;
}
.btn-success:hover {
  background: #059669;
}

.btn-danger {
  background: var(--danger);
  color: #ffffff;
}
.btn-danger:hover {
  background: #dc2626;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.825rem;
}

.btn-lg {
  padding: 0.85rem 1.75rem;
  font-size: 1.05rem;
  font-weight: 600;
}

/* Form inputs */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.6rem 0.85rem;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--text-main);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* Tables */
.table-responsive {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.table th {
  background: #f8fafc;
  color: #4b5563;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--border);
}

.table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.table tr:hover td {
  background-color: #f8fafc;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  font-size: 0.775rem;
  font-weight: 600;
  border-radius: 9999px;
  letter-spacing: 0.025em;
}

.badge-success {
  background: var(--success-light);
  color: #065f46;
}

.badge-warning {
  background: var(--warning-light);
  color: #92400e;
}

.badge-danger {
  background: var(--danger-light);
  color: #991b1b;
}

.badge-neutral {
  background: #f3f4f6;
  color: #374151;
}

/* Alerts */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  font-size: 0.925rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-success {
  background: var(--success-light);
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.alert-danger {
  background: var(--danger-light);
  border: 1px solid #fecaca;
  color: #991b1b;
}

.alert-warning {
  background: var(--warning-light);
  border: 1px solid #fde68a;
  color: #92400e;
}

.alert-info {
  background: var(--primary-light);
  border: 1px solid #bfdbfe;
  color: #1e40af;
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(2px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-content {
  background: #ffffff;
  border-radius: var(--radius);
  max-width: 540px;
  width: 100%;
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.97); }
  to { opacity: 1; transform: scale(1); }
}

/* Progress bar */
.progress-container {
  width: 100%;
  background: #e2e8f0;
  border-radius: 9999px;
  height: 14px;
  overflow: hidden;
  margin: 1.25rem 0;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #10b981);
  width: 0%;
  transition: width 0.3s ease;
  border-radius: 9999px;
}

.progress-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: #4b5563;
  text-align: center;
}

.progress-percentage {
  font-size: 1.5rem;
  font-weight: 700;
  color: #111827;
  text-align: center;
  margin-top: 0.5rem;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: #ffffff;
  margin-top: auto;
}

/* Language Selector */
.lang-select {
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #ffffff;
  font-size: 0.85rem;
  color: var(--text-main);
  cursor: pointer;
  outline: none;
  font-weight: 500;
  transition: all 0.15s ease;
}

.lang-select:hover {
  border-color: #cbd5e1;
}

.lang-select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}