/* ==========================================================================
   SpeakingExamer - Next-Gen Dark Glassmorphism Design System
   ========================================================================== */

:root {
  /* Surface & Backgrounds */
  --bg-body: #060911;
  --bg-sidebar: rgba(12, 17, 29, 0.85);
  --bg-card: rgba(17, 24, 39, 0.65);
  --bg-card-hover: rgba(26, 36, 56, 0.75);
  --bg-card-solid: #0f172a;
  --bg-input: rgba(15, 23, 42, 0.75);
  --bg-elevated: rgba(30, 41, 59, 0.7);

  /* Borders */
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(255, 255, 255, 0.18);
  --border-focus: #6366f1;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Vibrant Accents */
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.35);
  --secondary: #0ea5e9;
  --secondary-glow: rgba(14, 165, 233, 0.35);
  --violet: #8b5cf6;
  --violet-glow: rgba(139, 92, 246, 0.35);
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.14);
  --success-border: rgba(16, 185, 129, 0.3);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.14);
  --warning-border: rgba(245, 158, 11, 0.3);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.14);
  --danger-border: rgba(239, 68, 68, 0.3);

  /* Radius & Shadows */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 25px var(--primary-glow);

  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

input, button, select, textarea {
  font-family: inherit;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  background-image: 
    radial-gradient(ellipse at 15% 10%, rgba(99, 102, 241, 0.13) 0%, transparent 45%),
    radial-gradient(ellipse at 85% 90%, rgba(14, 165, 233, 0.10) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.05) 0%, transparent 60%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

/* --- Layout --- */
.app-container {
  display: flex;
  width: 100%;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  width: 270px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 50;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.sidebar-brand {
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid var(--border-color);
}

.brand-icon {
  font-size: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px var(--primary-glow);
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #ffffff 30%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-nav {
  padding: 24px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  overflow-y: auto;
}

.nav-category {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-dim);
  letter-spacing: 0.8px;
  padding: 12px 14px 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition);
  border: 1px solid transparent;
}

.nav-item span.icon {
  font-size: 1.15rem;
  transition: transform 0.2s ease;
}

.nav-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.08);
}

.nav-item:hover span.icon {
  transform: scale(1.15);
}

.nav-item.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.22), rgba(14, 165, 233, 0.12));
  border-color: rgba(99, 102, 241, 0.35);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.15);
}

.sidebar-footer {
  padding: 18px 20px;
  border-top: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.admin-badge {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.admin-badge b {
  color: #fff;
}

.logout-btn {
  font-size: 0.8rem;
  color: var(--danger);
  text-decoration: none;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  transition: var(--transition);
}

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

/* --- Main Wrapper --- */
.main-wrapper {
  margin-left: 270px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.header {
  height: 72px;
  padding: 0 32px;
  background: rgba(6, 9, 17, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.page-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #fff;
}

.content {
  padding: 32px;
  flex: 1;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #4338ca 100%);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #7175f3 0%, var(--primary) 100%);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--border-color-hover);
  color: #fff;
  transform: translateY(-1px);
}

.btn-success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
  transform: translateY(-1px);
}

.btn-danger {
  background: var(--danger-bg);
  color: #f87171;
  border: 1px solid var(--danger-border);
}

.btn-danger:hover {
  background: var(--danger);
  color: #fff;
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  border-color: var(--border-color-hover);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px 26px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

/* --- Cards & Panels --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-md);
  margin-bottom: 24px;
  position: relative;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--border-color-hover);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 16px;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* --- Stats Grid & KPI Cards --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: var(--transition);
  min-height: 145px;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.35);
  box-shadow: 0 12px 28px -6px rgba(0, 0, 0, 0.5);
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-bottom: 12px;
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.6px;
  line-height: 1.3;
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-hint {
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.4;
}

.stat-hint b {
  color: var(--text-main);
}

/* Horizontal variation support if used */
.stat-card:has(.stat-info),
.stat-card.stat-card-horizontal {
  flex-direction: row;
  align-items: center;
  gap: 16px;
  min-height: auto;
}

.stat-info {
  flex: 1;
}

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

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}

.form-label span.req {
  color: var(--danger);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: #fff;
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--border-focus);
  background: rgba(15, 23, 42, 0.95);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.form-control::placeholder {
  color: var(--text-dim);
}

textarea.form-control {
  min-height: 100px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

/* --- Badges & Chips --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
}

.badge-primary {
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
  border-color: rgba(99, 102, 241, 0.3);
}

.badge-secondary {
  background: rgba(14, 165, 233, 0.15);
  color: #7dd3fc;
  border-color: rgba(14, 165, 233, 0.3);
}

.badge-success {
  background: var(--success-bg);
  color: #6ee7b7;
  border-color: var(--success-border);
}

.badge-warning {
  background: var(--warning-bg);
  color: #fcd34d;
  border-color: var(--warning-border);
}

.badge-danger {
  background: var(--danger-bg);
  color: #fca5a5;
  border-color: var(--danger-border);
}

.badge-gray {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border-color: var(--border-color);
}

/* --- Tabs Nav --- */
.tabs-nav {
  display: flex;
  gap: 10px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.tab-btn {
  padding: 12px 20px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-btn:hover {
  color: #fff;
}

.tab-btn.active {
  color: #fff;
  border-bottom-color: var(--primary);
}

/* --- Interactive Set & Question Builders --- */
.builder-section {
  background: rgba(10, 15, 27, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
}

.builder-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.set-container {
  background: rgba(15, 23, 42, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: var(--radius-md) !important;
  padding: 20px !important;
  margin-bottom: 18px !important;
  transition: var(--transition) !important;
  position: relative !important;
}

.set-container:hover {
  border-color: rgba(99, 102, 241, 0.35) !important;
}

.set-header {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  margin-bottom: 16px !important;
  flex-wrap: wrap !important;
  gap: 12px !important;
}

.set-title-input {
  font-size: 0.95rem !important;
  font-weight: 700 !important;
  font-family: inherit !important;
  color: #fff !important;
  background: rgba(15, 23, 42, 0.9) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius-sm) !important;
  padding: 7px 14px !important;
  outline: none !important;
  min-width: 240px !important;
  transition: var(--transition) !important;
}

.set-title-input:focus {
  border-color: var(--primary) !important;
  background: rgba(15, 23, 42, 1) !important;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25) !important;
}

.questions-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 14px;
}

.question-row {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  gap: 12px !important;
  width: 100% !important;
  margin-bottom: 8px !important;
  flex-wrap: nowrap !important;
}

.question-row input,
.question-row .question-input,
.question-row .bullet-input,
.bullet-input,
.question-input {
  flex: 1 1 auto !important;
  width: auto !important;
  min-width: 0 !important;
  padding: 10px 14px !important;
  font-size: 0.92rem !important;
  font-family: inherit !important;
  background: var(--bg-input) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius-sm) !important;
  color: #fff !important;
  outline: none !important;
  transition: var(--transition) !important;
  box-sizing: border-box !important;
}

.question-row input:focus,
.question-row .question-input:focus,
.question-row .bullet-input:focus,
.bullet-input:focus,
.question-input:focus {
  border-color: var(--border-focus) !important;
  background: rgba(15, 23, 42, 0.95) !important;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25) !important;
}

.question-row input::placeholder,
.question-row .question-input::placeholder,
.question-row .bullet-input::placeholder,
.bullet-input::placeholder,
.question-input::placeholder {
  color: var(--text-dim) !important;
}

.bullet-dot {
  color: var(--secondary) !important;
  font-size: 1.3rem !important;
  line-height: 1 !important;
  width: 16px !important;
  text-align: center !important;
  flex-shrink: 0 !important;
  display: inline-block !important;
}

.question-label {
  color: var(--text-dim) !important;
  font-size: 0.85rem !important;
  font-weight: 700 !important;
  width: 28px !important;
  flex-shrink: 0 !important;
}

.btn-icon {
  width: 38px !important;
  height: 38px !important;
  min-width: 38px !important;
  min-height: 38px !important;
  max-width: 38px !important;
  max-height: 38px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  border-radius: var(--radius-sm) !important;
  border: 1px solid var(--border-color) !important;
  background: rgba(255, 255, 255, 0.05) !important;
  color: var(--text-muted) !important;
  cursor: pointer !important;
  transition: var(--transition) !important;
  flex-shrink: 0 !important;
  padding: 0 !important;
  font-size: 0.95rem !important;
  line-height: 1 !important;
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.12) !important;
  color: #fff !important;
  border-color: var(--border-color-hover) !important;
}

.btn-icon-danger {
  color: #f87171 !important;
  border-color: rgba(239, 68, 68, 0.3) !important;
  background: rgba(239, 68, 68, 0.12) !important;
}

.btn-icon-danger:hover {
  background: var(--danger) !important;
  border-color: var(--danger) !important;
  color: #fff !important;
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.4) !important;
}

/* Bullet points tag list */
.bullets-builder {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* --- Search Bar & Quick Filters --- */
.search-wrapper {
  position: relative;
  flex: 1;
  max-width: 450px;
}

.search-input {
  width: 100%;
  padding: 10px 16px 10px 42px;
  font-size: 0.9rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: #fff;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  font-size: 1rem;
  pointer-events: none;
}

/* --- Accordion & Topic Items --- */
.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.accordion-item:hover {
  border-color: var(--border-color-hover);
}

.accordion-header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  background: rgba(255, 255, 255, 0.015);
  transition: var(--transition);
  gap: 16px;
}

.accordion-header:hover {
  background: rgba(255, 255, 255, 0.04);
}

.accordion-body {
  padding: 20px;
  border-top: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.2);
}

/* --- Toast Notifications --- */
.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 300px;
  max-width: 420px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-card-solid);
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 500;
  animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(16px);
}

.toast.toast-success {
  border-left: 4px solid var(--success);
}

.toast.toast-error {
  border-left: 4px solid var(--danger);
}

.toast.toast-info {
  border-left: 4px solid var(--secondary);
}

@keyframes toastSlideIn {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* --- Tables --- */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-md);
}

.table, .data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.table th, .data-table th {
  background: rgba(255, 255, 255, 0.03);
  padding: 14px 18px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-dim);
  letter-spacing: 0.6px;
  border-bottom: 1px solid var(--border-color);
}

.table td, .data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  vertical-align: middle;
}

.table tr:hover td, .data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 24px;
}

/* --- Responsive Helpers --- */
@media (max-width: 1024px) {
  .sidebar {
    width: 80px;
  }
  .sidebar-brand div:last-child,
  .nav-item span:last-child,
  .nav-category,
  .sidebar-footer {
    display: none;
  }
  .main-wrapper {
    margin-left: 80px;
  }
  .header, .content {
    padding: 20px;
  }
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Modals --- */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  width: 100%;
  max-width: 540px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 25px 60px -10px rgba(0, 0, 0, 0.8);
  transform: scale(0.95);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-backdrop.open .modal-card {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 1.6rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 4px;
  border-radius: var(--radius-xs);
  transition: var(--transition);
}

.modal-close:hover {
  color: #fff;
}

/* --- Login View --- */
.login-page {
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background-color: var(--bg-body);
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.login-logo {
  text-align: center;
  margin-bottom: 28px;
}

.login-logo .icon {
  font-size: 44px;
  display: inline-block;
  margin-bottom: 8px;
}

.login-alert {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: var(--danger-bg);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
  font-size: 0.88rem;
  margin-bottom: 20px;
}