/* ============================
   NexaPro Admin Dashboard
   Light theme + Yellow #ffde00
   ============================ */

:root {
  --bg: #f5f6fa;
  --bg-card: #ffffff;
  --bg-sidebar: #1a1a2e;
  --bg-sidebar-hover: #252545;
  --bg-sidebar-active: #30305a;
  --accent: #ffde00;
  --accent-hover: #e6c800;
  --accent-text: #1a1a2e;
  --text: #1a1a2e;
  --text-secondary: #6b7280;
  --text-sidebar: #b0b0c8;
  --text-sidebar-active: #ffffff;
  --border: #e5e7eb;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --info: #3b82f6;
  --info-bg: #eff6ff;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
  --radius: 10px;
  --radius-sm: 6px;
  --sidebar-width: 250px;
  --font: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ============================
   Layout
   ============================ */
#app {
  min-height: 100vh;
}

#view-main {
  display: flex;
  min-height: 100vh;
}

/* ============================
   Sidebar
   ============================ */
#sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  min-height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: 0;
}

.sidebar-logo {
  padding: 24px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: bold;
  color: var(--accent-text);
}

.sidebar-logo .logo-text {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
}

.sidebar-logo .logo-badge {
  font-size: 10px;
  background: var(--accent);
  color: var(--accent-text);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
  margin-left: auto;
}

.sidebar-nav {
  padding: 16px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-sidebar);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s;
  text-decoration: none;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background: var(--bg-sidebar-hover);
  color: #e0e0f0;
}

.nav-item.active {
  background: var(--bg-sidebar-active);
  color: var(--text-sidebar-active);
}

.nav-item.active .nav-icon {
  color: var(--accent);
}

.nav-icon {
  font-size: 18px;
  width: 22px;
  text-align: center;
}

.sidebar-footer {
  padding: 16px 12px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

/* ============================
   Main Content
   ============================ */
#content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 28px 32px;
  min-height: 100vh;
}

.page-header {
  margin-bottom: 28px;
}

.page-header h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.page-header p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ============================
   Cards
   ============================ */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 20px 24px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
}

/* Stat Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.stat-icon.yellow { background: #fef9e7; color: #d4a800; }
.stat-icon.green { background: var(--success-bg); color: var(--success); }
.stat-icon.red { background: var(--danger-bg); color: var(--danger); }
.stat-icon.blue { background: var(--info-bg); color: var(--info); }
.stat-icon.orange { background: var(--warning-bg); color: var(--warning); }

.stat-info h3 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-info p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ============================
   Table
   ============================ */
.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 14px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

tbody tr:hover {
  background: #f9fafb;
}

tbody tr:last-child td {
  border-bottom: none;
}

/* ============================
   Badges
   ============================ */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-active {
  background: var(--success-bg);
  color: var(--success);
}

.badge-blocked {
  background: var(--danger-bg);
  color: var(--danger);
}

.badge-expired {
  background: #f3f4f6;
  color: #6b7280;
}

.badge-permanent {
  background: var(--info-bg);
  color: var(--info);
}

/* ============================
   Buttons
   ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--font);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 2px 8px rgba(255, 222, 0, 0.3);
}

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

.btn-danger:hover {
  background: #dc2626;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: #f3f4f6;
  color: var(--text);
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-success:hover {
  background: #059669;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-icon {
  padding: 8px;
  width: 36px;
  height: 36px;
}

/* ============================
   Forms
   ============================ */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font);
  background: #fff;
  color: var(--text);
  transition: border-color 0.15s;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 222, 0, 0.15);
}

.form-input::placeholder {
  color: #9ca3af;
}

textarea.form-input {
  resize: vertical;
  min-height: 80px;
}

select.form-input {
  cursor: pointer;
}

.form-input[readonly] {
  background: #f3f4f6;
  cursor: default;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ============================
   Toggle Switch
   ============================ */
.toggle-group {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}

.toggle-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: #f9fafb;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.toggle-item label {
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

.toggle {
  position: relative;
  width: 44px;
  height: 24px;
  cursor: pointer;
}

.toggle input {
  display: none;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: #d1d5db;
  border-radius: 24px;
  transition: 0.2s;
}

.toggle-slider::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  top: 3px;
  left: 3px;
  transition: 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.toggle input:checked + .toggle-slider {
  background: var(--accent);
}

.toggle input:checked + .toggle-slider::after {
  transform: translateX(20px);
}

/* ============================
   Search Bar
   ============================ */
.search-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.search-input {
  flex: 1;
  max-width: 360px;
  padding: 10px 14px 10px 38px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%239ca3af' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001q.044.06.098.115l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85a1 1 0 0 0-.115-.1zM12 6.5a5.5 5.5 0 1 1-11 0 5.5 5.5 0 0 1 11 0'/%3E%3C/svg%3E") 12px center no-repeat;
  font-family: var(--font);
  transition: border-color 0.15s;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 222, 0, 0.15);
}

/* ============================
   Login Page
   ============================ */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a1a2e 0%, #2d2d5e 100%);
}

.login-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 40px;
  width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  text-align: center;
}

.login-logo {
  width: 64px;
  height: 64px;
  background: var(--accent);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: bold;
  margin: 0 auto 16px;
  color: var(--accent-text);
}

.login-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}

.login-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.login-error {
  background: var(--danger-bg);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  display: none;
}

.login-card .btn-primary {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  margin-top: 8px;
}

/* ============================
   Modal
   ============================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.2s;
}

.modal-overlay.show {
  opacity: 1;
}

.modal {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 28px;
  width: 90%;
  max-width: 440px;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform 0.2s;
}

.modal-overlay.show .modal {
  transform: scale(1);
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.modal-text {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ============================
   Toast
   ============================ */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--success);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.3s ease;
  min-width: 280px;
}

.toast.error {
  border-left-color: var(--danger);
}

.toast.warning {
  border-left-color: var(--warning);
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ============================
   Upload Area
   ============================ */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: #fafafa;
}

.upload-area:hover,
.upload-area.dragover {
  border-color: var(--accent);
  background: #fef9e7;
}

.upload-area .upload-icon {
  font-size: 36px;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.upload-area .upload-text {
  font-size: 14px;
  color: var(--text-secondary);
}

.upload-area .upload-text strong {
  color: var(--text);
}

.upload-progress {
  margin-top: 16px;
  display: none;
}

.progress-bar {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  transition: width 0.3s;
  width: 0%;
}

.progress-text {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* ============================
   Changelog Editor
   ============================ */
.changelog-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.changelog-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.changelog-item .form-input {
  flex: 1;
}

.changelog-item .btn-icon {
  color: var(--danger);
  flex-shrink: 0;
}

/* ============================
   Empty State
   ============================ */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.empty-state h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.empty-state p {
  font-size: 14px;
}

/* ============================
   Loading spinner
   ============================ */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* ============================
   Responsive
   ============================ */
@media (max-width: 768px) {
  :root {
    --sidebar-width: 0px;
  }

  #sidebar {
    transform: translateX(-100%);
    width: 250px;
  }

  #sidebar.open {
    transform: translateX(0);
  }

  #content {
    padding: 20px 16px;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .toggle-group {
    grid-template-columns: 1fr;
  }
}