@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg: #0f1117;
  --bg-card: #1a1d27;
  --bg-input: #242736;
  --border: #2a2d3a;
  --text: #e8eaf0;
  --text-sec: #8892a8;
  --text-muted: #5a6480;
  --accent: #7c6aef;
  --accent-hover: #9584ff;
  --accent-glow: #7c6aef30;
  --success: #4ade80;
  --warning: #fbbf24;
  --error: #f87171;
  --gradient: linear-gradient(135deg, #7c6aef 0%, #a78bfa 100%);
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ===== LOGIN PAGE ===== */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.login-container::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 20%, var(--accent-glow) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, rgba(167,139,250,0.1) 0%, transparent 50%);
  animation: bgShift 15s ease infinite alternate;
}

@keyframes bgShift {
  from { transform: translate(0, 0); }
  to { transform: translate(3%, 3%); }
}

.login-box {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}

.login-logo {
  width: 56px; height: 56px;
  border-radius: 16px;
  background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.4rem; color: white;
}

.login-box h1 {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.login-box p {
  text-align: center;
  color: var(--text-sec);
  font-size: 0.875rem;
  margin-bottom: 32px;
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-sec);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  transition: all 0.25s ease;
  outline: none;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn-primary {
  width: 100%;
  padding: 14px;
  background: var(--gradient);
  border: none;
  border-radius: 10px;
  color: white;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.login-error {
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.3);
  color: var(--error);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 20px;
  text-align: center;
}

/* ===== ADMIN LAYOUT ===== */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 260px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 10;
}

.admin-sidebar-header {
  padding: 0 20px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.admin-sidebar-header h2 {
  font-size: 1.1rem;
  display: flex; align-items: center; gap: 10px;
}

.admin-sidebar-header h2 i { color: var(--accent); }

.admin-nav { flex: 1; padding: 0 12px; }

.admin-nav a {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 16px;
  border-radius: 10px;
  color: var(--text-sec);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
  margin-bottom: 4px;
}

.admin-nav a:hover { background: var(--bg-input); color: var(--text); }

.admin-nav a.active {
  background: var(--accent-glow);
  color: var(--accent-hover);
}

.admin-nav a i { width: 20px; text-align: center; font-size: 0.9rem; }

.admin-sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

.admin-sidebar-footer a {
  display: flex; align-items: center; gap: 10px;
  color: var(--error);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 0;
}

.admin-main {
  flex: 1;
  margin-left: 260px;
  padding: 32px 40px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.admin-header h1 { font-size: 1.6rem; font-weight: 700; }

.admin-header .badge {
  background: var(--accent-glow);
  color: var(--accent-hover);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* ===== CARDS ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all 0.25s ease;
}

.stat-card:hover { border-color: var(--accent); transform: translateY(-2px); }

.stat-card .stat-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  margin-bottom: 16px;
}

.stat-card .stat-icon.purple { background: var(--accent-glow); color: var(--accent); }
.stat-card .stat-icon.green { background: rgba(74,222,128,0.15); color: var(--success); }
.stat-card .stat-icon.yellow { background: rgba(251,191,36,0.15); color: var(--warning); }
.stat-card .stat-icon.red { background: rgba(248,113,113,0.15); color: var(--error); }

.stat-card .stat-value { font-size: 1.8rem; font-weight: 700; margin-bottom: 4px; }
.stat-card .stat-label { color: var(--text-sec); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; }

/* ===== PANELS ===== */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 24px;
  overflow: hidden;
}

.panel-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.panel-header h3 { font-size: 1rem; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.panel-header h3 i { color: var(--accent); }
.panel-body { padding: 24px; }

/* ===== TABLE ===== */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
  text-align: left; padding: 12px 16px;
  font-size: 0.75rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.data-table td {
  padding: 14px 16px; font-size: 0.875rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-sec);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,0.02); }

/* ===== BUTTONS ===== */
.btn {
  padding: 10px 20px;
  border-radius: 10px;
  border: none;
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex; align-items: center; gap: 8px;
}

.btn-accent { background: var(--gradient); color: white; }
.btn-accent:hover { box-shadow: 0 4px 16px var(--accent-glow); transform: translateY(-1px); }
.btn-danger { background: rgba(248,113,113,0.15); color: var(--error); border: 1px solid rgba(248,113,113,0.3); }
.btn-danger:hover { background: rgba(248,113,113,0.25); }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }

/* ===== FORM IN PANELS ===== */
.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.settings-grid .full-width { grid-column: 1 / -1; }

.range-value {
  display: flex; align-items: center; gap: 12px;
}

.range-value input[type="range"] {
  flex: 1; accent-color: var(--accent);
  height: 6px;
}

.range-value span {
  min-width: 45px;
  text-align: center;
  background: var(--bg-input);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

/* ===== MODEL LIST ===== */
.model-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

.model-item:last-child { border-bottom: none; }

.model-info { display: flex; align-items: center; gap: 12px; }

.model-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--success);
}

.model-dot.disabled { background: var(--text-muted); }

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

.toggle input { opacity: 0; width: 0; height: 0; }

.toggle-slider {
  position: absolute; inset: 0;
  background: var(--bg-input);
  border-radius: 24px;
  cursor: pointer;
  transition: 0.3s;
  border: 1px solid var(--border);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  border-radius: 50%;
  left: 2px; bottom: 2px;
  background: var(--text-sec);
  transition: 0.3s;
}

.toggle input:checked + .toggle-slider { background: var(--accent); border-color: var(--accent); }
.toggle input:checked + .toggle-slider::before { transform: translateX(20px); background: white; }

.add-model-form {
  display: flex; gap: 12px;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

.add-model-form input {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  outline: none;
}

.add-model-form input:focus { border-color: var(--accent); }

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 24px; right: 24px;
  background: var(--bg-card);
  border: 1px solid var(--success);
  color: var(--success);
  padding: 14px 24px;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 999;
}

.toast.show { transform: translateY(0); opacity: 1; }

/* ===== SECTION TABS ===== */
.section-hidden { display: none; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 10px; }

/* ===== MOBILE RESPONSIVE ===== */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
  margin-right: 15px;
  vertical-align: middle;
}

.admin-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 9;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.admin-overlay.open {
  display: block;
  opacity: 1;
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: inline-block;
  }
  
  .admin-sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 4px 0 24px rgba(0,0,0,0.5);
  }
  
  .admin-sidebar.open {
    transform: translateX(0);
  }
  
  .admin-main {
    margin-left: 0;
    padding: 20px 15px;
  }
  
  .admin-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  
  .admin-header h1 {
    display: flex;
    align-items: center;
    font-size: 1.4rem;
  }
  
  .stats-grid, .settings-grid {
    grid-template-columns: 1fr;
  }
  
  .data-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
  
  .login-box {
    padding: 32px 24px;
    margin: 16px;
  }
}