/* ============================================================
   SECTROX — Enterprise Design System v1.0
   Black + Red + White Cyber Premium Theme
   ============================================================ */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  /* --- Colors (Light Theme Default) --- */
  --color-bg:           #f8fafc;
  --color-bg-rgb:       248, 250, 252;
  --color-bg-alt:       #ffffff;
  --color-surface:      #ffffff;
  --color-surface-rgb:  255, 255, 255;
  --color-surface-2:    #f1f5f9;
  --color-surface-3:    #e2e8f0;
  --color-card:         #ffffff;
  --color-card-hover:   #f8fafc;
  --color-border:       rgba(0, 0, 0, 0.12);
  --color-border-hover: rgba(255, 26, 26, 0.4);

  --color-red:          #ff1a1a;
  --color-red-hover:    #ff3333;
  --color-red-dark:     #cc0000;
  --color-red-muted:    rgba(255, 26, 26, 0.15);
  --color-red-glow:     rgba(255, 26, 26, 0.3);
  --color-red-glow-lg:  rgba(255, 26, 26, 0.15);

  --color-white:        #0f172a; /* Headings become dark */
  --color-text:         #1e293b;
  --color-text-2:       #475569;
  --color-text-3:       #64748b;
  --color-text-muted:   #94a3b8;

  --color-success:      #00cc66;
  --color-success-bg:   rgba(0, 204, 102, 0.1);
  --color-warning:      #ffaa00;
  --color-warning-bg:   rgba(255, 170, 0, 0.1);
  --color-info:         #0099ff;
  --color-info-bg:      rgba(0, 153, 255, 0.1);
  --color-error:        #ff4444;
  --color-error-bg:     rgba(255, 68, 68, 0.1);

  /* --- Gradients --- */
  --gradient-red:       linear-gradient(135deg, #ff1a1a 0%, #cc0000 100%);
  --gradient-red-glow:  linear-gradient(135deg, rgba(255,26,26,0.2) 0%, transparent 100%);
  --gradient-dark:      linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
  --gradient-card:      linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
  --gradient-hero:      linear-gradient(135deg, #f8fafc 0%, #fff1f2 50%, #ffffff 100%);
  --gradient-cyber:     linear-gradient(180deg, rgba(255,26,26,0.05) 0%, transparent 100%);

  /* --- Spacing Scale --- */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* --- Border Radius --- */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-2xl:  24px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-sm:     0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:     0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg:     0 10px 15px -3px rgba(0,0,0,0.1);
  --shadow-xl:     0 20px 25px -5px rgba(0,0,0,0.1);
  --shadow-red:    0 4px 24px rgba(255,26,26,0.15);
  --shadow-red-lg: 0 8px 40px rgba(255,26,26,0.25);
  --shadow-glow:   0 0 20px rgba(255,26,26,0.1), 0 0 60px rgba(255,26,26,0.05);
  --shadow-card:   0 1px 3px rgba(0,0,0,0.1);

  /* --- Typography --- */
  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;
  --font-head:  'Space Grotesk', 'Inter', sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-md:   1.125rem;
  --text-lg:   1.25rem;
  --text-xl:   1.5rem;
  --text-2xl:  1.875rem;
  --text-3xl:  2.25rem;
  --text-4xl:  3rem;
  --text-5xl:  3.75rem;
  --text-6xl:  4.5rem;

  /* --- Z-Index Layers --- */
  --z-base:    1;
  --z-card:    10;
  --z-sticky:  100;
  --z-overlay: 500;
  --z-modal:   1000;
  --z-toast:   2000;
  --z-tooltip: 3000;

  /* --- Motion --- */
  --ease-out:   cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in:    cubic-bezier(0.4, 0, 1, 1);
  --ease-inout: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast:   150ms;
  --duration-normal: 250ms;
  --duration-slow:   400ms;
  --duration-slower: 600ms;

  /* --- Sidebar --- */
  --sidebar-width: 260px;
  --navbar-height: 64px;

  /* --- Alias for components --- */
  --color-primary: var(--color-red);
  --color-primary-muted: var(--color-red-muted);
  --color-border-muted: rgba(0, 0, 0, 0.08);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  /* scroll-behavior: smooth; -- Handled by Lenis for better control */
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---- Custom Scrollbar ---- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { 
    background: var(--color-surface-3); 
    border: 3px solid var(--color-bg); 
    border-radius: 10px; 
}
::-webkit-scrollbar-thumb:hover { background: var(--color-red-muted); }


img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-white);
}

.text-gradient {
  background: var(--gradient-red);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-muted   { color: var(--color-text-2); }
.text-xs      { font-size: var(--text-xs); }
.text-sm      { font-size: var(--text-sm); }
.text-base    { font-size: var(--text-base); }
.text-lg      { font-size: var(--text-lg); }
.text-xl      { font-size: var(--text-xl); }
.text-2xl     { font-size: var(--text-2xl); }
.text-3xl     { font-size: var(--text-3xl); }
.font-mono    { font-family: var(--font-mono); }
.font-medium  { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold    { font-weight: 700; }

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-sm { max-width: 860px; }
.container-lg { max-width: 1440px; }

.section { padding: var(--space-20) 0; }
.section-sm { padding: var(--space-12) 0; }

.grid { display: grid; }
.flex { display: flex; }
.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2  { gap: var(--space-2); }
.gap-3  { gap: var(--space-3); }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 24px;
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: 0.01em;
  cursor: pointer;
  border: none;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  user-select: none;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.08);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.btn:hover::before { opacity: 1; }

.btn:active { transform: scale(0.97); }

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary */
.btn-primary {
  background: var(--gradient-red);
  color: #fff;
  box-shadow: var(--shadow-red);
}
.btn-primary:hover {
  box-shadow: var(--shadow-red-lg), var(--shadow-glow);
  transform: translateY(-1px);
}

/* Secondary */
.btn-secondary {
  background: var(--color-surface-3);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-red);
  color: var(--color-red);
  background: var(--color-red-muted);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--color-white);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  color: var(--color-white);
  border-color: var(--color-border-hover);
  background: rgba(255,255,255,0.04);
}

/* Outline Red */
.btn-outline {
  background: transparent;
  color: var(--color-red);
  border: 1px solid var(--color-red);
}
.btn-outline:hover {
  background: var(--color-red-muted);
  box-shadow: var(--shadow-red);
}

/* Danger */
.btn-danger {
  background: rgba(255, 68, 68, 0.15);
  color: #ff4444;
  border: 1px solid rgba(255, 68, 68, 0.3);
}
.btn-danger:hover { background: rgba(255, 68, 68, 0.25); }

/* Success */
.btn-success {
  background: rgba(0, 204, 102, 0.15);
  color: var(--color-success);
  border: 1px solid rgba(0, 204, 102, 0.3);
}
.btn-success:hover { background: rgba(0, 204, 102, 0.25); }

/* Sizes */
.btn-xs  { padding: 6px 12px; font-size: var(--text-xs); border-radius: var(--radius-md); }
.btn-sm  { padding: 8px 16px; font-size: var(--text-sm); border-radius: var(--radius-md); }
.btn-lg  { padding: 16px 32px; font-size: var(--text-md); border-radius: var(--radius-xl); }
.btn-xl  { padding: 20px 40px; font-size: var(--text-lg); border-radius: var(--radius-xl); }
.btn-icon { width: 40px; height: 40px; padding: 0; border-radius: var(--radius-lg); }
.btn-icon.btn-sm { width: 32px; height: 32px; }
.btn-full { width: 100%; }

/* Loading state */
.btn.loading .btn-text { opacity: 0; }
.btn.loading::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-cyber);
  opacity: 0;
  transition: opacity var(--duration-slow);
  pointer-events: none;
}

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

.card-hover:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-red), var(--shadow-lg);
  transform: translateY(-2px);
}

/* Glassmorphism */
.card-glass {
  background: rgba(20, 20, 20, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.08);
}

.card-glass:hover {
  background: rgba(26, 26, 26, 0.8);
  border-color: rgba(255, 26, 26, 0.2);
}

.glass {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.glass-red {
  background: rgba(255, 26, 26, 0.03);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 26, 26, 0.1);
}


/* Glow card */
.card-glow {
  box-shadow: var(--shadow-card), 0 0 40px rgba(255,26,26,0.08);
}
.card-glow:hover {
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

/* ============================================================
   COURSE CARDS
   ============================================================ */
.course-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  display: flex;
  flex-direction: column;
}

.course-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-red), var(--shadow-lg);
  transform: translateY(-4px);
}

.course-card-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-surface-2);
}

.course-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slower) var(--ease-out);
}

.course-card:hover .course-card-thumb img {
  transform: scale(1.05);
}

.course-card-thumb .play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.5);
  opacity: 0;
  transition: opacity var(--duration-normal);
}

.course-card:hover .play-btn { opacity: 1; }

.course-card-body {
  padding: var(--space-5);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.course-card-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ============================================================
   FORMS & INPUTS
   ============================================================ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-2);
}

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

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  transition: all var(--duration-normal) var(--ease-out);
  outline: none;
  -webkit-appearance: none;
}

.form-control::placeholder { color: var(--color-text-3); }

.form-control:focus {
  border-color: var(--color-red);
  background: var(--color-surface-3);
  box-shadow: 0 0 0 3px var(--color-red-muted);
}

.form-control:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-control-icon {
  position: relative;
}
.form-control-icon .form-control { padding-left: 44px; }
.form-control-icon .icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-3);
  font-size: 15px;
  pointer-events: none;
}

.form-control.error { border-color: var(--color-error); }
.form-error { font-size: var(--text-xs); color: var(--color-error); margin-top: 4px; }

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23666'%3E%3Cpath d='M5.23 7.21a.75.75 0 011.06.02L10 11.168l3.71-3.938a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0l-4.25-4.5a.75.75 0 01.02-1.06z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 20px;
  padding-right: 40px;
  cursor: pointer;
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-red);
  cursor: pointer;
}

/* Toggle switch */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

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

.toggle-slider {
  width: 44px;
  height: 24px;
  background: var(--color-surface-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  transition: background var(--duration-normal);
  position: relative;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  background: var(--color-text-3);
  border-radius: 50%;
  top: 2px;
  left: 2px;
  transition: all var(--duration-normal) var(--ease-spring);
}

.toggle input:checked + .toggle-slider {
  background: var(--color-red);
  border-color: var(--color-red);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(20px);
  background: #fff;
}

/* ============================================================
   BADGES
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.badge-red     { background: var(--color-red-muted); color: var(--color-red); border: 1px solid rgba(255,26,26,0.2); }
.badge-green   { background: var(--color-success-bg); color: var(--color-success); border: 1px solid rgba(0,204,102,0.2); }
.badge-yellow  { background: var(--color-warning-bg); color: var(--color-warning); border: 1px solid rgba(255,170,0,0.2); }
.badge-blue    { background: var(--color-info-bg); color: var(--color-info); border: 1px solid rgba(0,153,255,0.2); }
.badge-gray    { background: rgba(255,255,255,0.06); color: var(--color-text-2); border: 1px solid var(--color-border); }
.bg-green  { background: var(--color-success-bg); color: var(--color-success); border: 1px solid rgba(0,204,102,0.2); }
.bg-blue   { background: var(--color-info-bg); color: var(--color-info); border: 1px solid rgba(0,153,255,0.2); }
.bg-orange { background: rgba(255,102,0,0.12); color: #ff6600; border: 1px solid rgba(255,102,0,0.2); }
.bg-red    { background: var(--color-red-muted); color: var(--color-red); border: 1px solid rgba(255,26,26,0.2); }
.bg-gray   { background: rgba(255,255,255,0.06); color: var(--color-text-2); border: 1px solid var(--color-border); }

/* ============================================================
   TABLES
   ============================================================ */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.table th {
  background: var(--color-surface-2);
  color: var(--color-text-3);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  vertical-align: middle;
}

.table tbody tr { transition: background var(--duration-fast); }
.table tbody tr:hover { background: rgba(255,255,255,0.02); }
.table tbody tr:last-child td { border-bottom: none; }

/* ============================================================
   MODALS
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(8px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  transform: translateY(20px) scale(0.96);
  transition: transform var(--duration-normal) var(--ease-spring);
}

.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.modal-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-white);
}

.modal-close {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-lg);
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  color: var(--color-text-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast);
}
.modal-close:hover { background: var(--color-red-muted); color: var(--color-red); border-color: var(--color-red); }

/* ============================================================
   PROGRESS BARS
   ============================================================ */
.progress-wrap {
  background: var(--color-surface-3);
  border-radius: var(--radius-full);
  height: 6px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--gradient-red);
  border-radius: var(--radius-full);
  transition: width 0.8s var(--ease-out);
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 8px;
  background: rgba(255,255,255,0.4);
  border-radius: var(--radius-full);
  animation: pulse-right 1.5s ease-in-out infinite;
}

.progress-lg .progress-wrap { height: 10px; }
.progress-sm .progress-wrap { height: 4px; }

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: var(--sidebar-width);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: var(--z-modal);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
  transition: transform var(--duration-normal) var(--ease-out);
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 2px; }

.sidebar-logo {
  padding: var(--space-5) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.sidebar-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-red);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: var(--shadow-red);
  flex-shrink: 0;
}

.sidebar-logo-text {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--text-lg);
  letter-spacing: -0.03em;
}

.sidebar-logo-text span { color: var(--color-red); }

.sidebar-nav { padding: var(--space-4) 0; flex: 1; }

.sidebar-section {
  padding: var(--space-4) var(--space-4) var(--space-2);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-3);
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px var(--space-4);
  margin: 2px var(--space-3);
  border-radius: var(--radius-lg);
  color: var(--color-text-2);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
  position: relative;
  white-space: nowrap;
}

.sidebar-item .icon {
  width: 20px;
  text-align: center;
  font-size: 15px;
  flex-shrink: 0;
  transition: color var(--duration-fast);
}

.sidebar-item:hover {
  background: rgba(255,255,255,0.04);
  color: var(--color-white);
}

.sidebar-item.active {
  background: var(--color-red-muted);
  color: var(--color-red);
  border: 1px solid rgba(255,26,26,0.15);
}

.sidebar-item.active .icon { color: var(--color-red); }

.sidebar-item .badge-count {
  margin-left: auto;
  background: var(--color-red);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  min-width: 20px;
  text-align: center;
}

.sidebar-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  transition: background var(--duration-fast);
  cursor: pointer;
}

.sidebar-user:hover { background: rgba(255,255,255,0.04); }

.sidebar-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--color-red);
  flex-shrink: 0;
}

.sidebar-user-info { flex: 1; min-width: 0; }
.sidebar-user-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar-user-role {
  font-size: var(--text-xs);
  color: var(--color-text-3);
}

/* Dashboard layout */
.dash-layout {
  display: flex;
  min-height: 100vh;
}

.dash-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.dash-topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  height: var(--navbar-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-8);
  gap: var(--space-4);
}

.dash-content {
  flex: 1;
  padding: var(--space-8);
}

/* ============================================================
   NAVBAR (PUBLIC)
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  transition: background var(--duration-normal), box-shadow var(--duration-normal);
}

.navbar.scrolled {
  background: rgba(var(--color-bg-rgb), 0.95);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--color-border);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--text-xl);
  letter-spacing: -0.03em;
}

.navbar-brand .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-red);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: var(--shadow-red);
}

.navbar-brand span { color: var(--color-red); }

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0 auto;
}

.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-2);
  transition: all var(--duration-fast);
  white-space: nowrap;
}

.nav-link:hover { color: var(--color-white); background: rgba(255,255,255,0.04); }
.nav-link.active { color: var(--color-red); background: var(--color-red-muted); }

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Mobile hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
}

/* ============================================================
   ALERTS
   ============================================================ */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: 14px 18px;
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-4);
  border-left: 3px solid;
}

.alert-success { background: var(--color-success-bg); color: var(--color-success); border-color: var(--color-success); }
.alert-error   { background: var(--color-error-bg); color: var(--color-error); border-color: var(--color-error); }
.alert-warning { background: var(--color-warning-bg); color: var(--color-warning); border-color: var(--color-warning); }
.alert-info    { background: var(--color-info-bg); color: var(--color-info); border-color: var(--color-info); }

/* ============================================================
   STATS CARDS
   ============================================================ */
.stat-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--color-red-glow-lg);
  pointer-events: none;
}

.stat-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-red);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: var(--color-red-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--color-red);
  margin-bottom: var(--space-4);
}

.stat-value {
  font-family: var(--font-head);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-2);
}

.stat-change {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-xs);
  font-weight: 600;
  margin-top: var(--space-2);
}

.stat-change.up   { color: var(--color-success); }
.stat-change.down { color: var(--color-error); }

/* ============================================================
   SEARCH
   ============================================================ */
.search-bar {
  position: relative;
  flex: 1;
  max-width: 400px;
}

.search-bar input {
  width: 100%;
  padding: 10px 16px 10px 42px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-size: var(--text-sm);
  outline: none;
  transition: all var(--duration-normal);
}

.search-bar input:focus {
  border-color: var(--color-red);
  background: var(--color-surface-3);
  box-shadow: 0 0 0 3px var(--color-red-muted);
}

.search-bar .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-3);
  pointer-events: none;
}

/* ============================================================
   XP / GAMIFICATION
   ============================================================ */
.xp-bar-wrap {
  background: var(--color-surface-3);
  border-radius: var(--radius-full);
  height: 8px;
  overflow: hidden;
  margin: var(--space-2) 0;
}

.xp-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-red) 0%, #ff6600 100%);
  border-radius: var(--radius-full);
  transition: width 1s var(--ease-out);
}

.level-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--color-red-muted);
  border: 1px solid rgba(255,26,26,0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-red);
}

.achievement-badge {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: var(--color-surface-3);
  border: 2px solid var(--color-border);
  transition: all var(--duration-normal);
  position: relative;
}

.achievement-badge.earned {
  background: var(--color-red-muted);
  border-color: var(--color-red);
  box-shadow: var(--shadow-red);
}

/* Stars */
.stars { color: #ffaa00; font-size: var(--text-sm); }

/* ============================================================
   SKELETON LOADERS
   ============================================================ */
.skeleton {
  background: linear-gradient(90deg, var(--color-surface-2) 25%, var(--color-surface-3) 50%, var(--color-surface-2) 75%);
  background-size: 200% 100%;
  animation: skeleton-wave 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-wave {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text  { height: 14px; margin-bottom: 8px; border-radius: 4px; }
.skeleton-title { height: 24px; margin-bottom: 12px; width: 60%; border-radius: 4px; }
.skeleton-image { aspect-ratio: 16/9; border-radius: var(--radius-lg); }
.skeleton-avatar { width: 48px; height: 48px; border-radius: 50%; flex-shrink: 0; }

/* ============================================================
   TOASTS
   ============================================================ */
.toast-container {
  position: fixed;
  top: var(--space-5);
  right: var(--space-5);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 14px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  font-size: var(--text-sm);
  font-weight: 500;
  min-width: 280px;
  max-width: 380px;
  pointer-events: all;
  animation: toast-in var(--duration-normal) var(--ease-spring);
}

.toast.success { border-left: 3px solid var(--color-success); }
.toast.error   { border-left: 3px solid var(--color-error); }
.toast.warning { border-left: 3px solid var(--color-warning); }
.toast.info    { border-left: 3px solid var(--color-info); }

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

/* ============================================================
   TOOLTIPS
   ============================================================ */
[data-tooltip] { position: relative; }
[data-tooltip]::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-surface-3);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-fast);
  z-index: var(--z-tooltip);
}
[data-tooltip]:hover::before { opacity: 1; }

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-surface-3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-3); }

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
.hidden      { display: none !important; }
.visible     { visibility: visible; }
.invisible   { visibility: hidden; }
.opacity-0   { opacity: 0; }
.opacity-50  { opacity: 0.5; }
.w-full      { width: 100%; }
.h-full      { height: 100%; }
.mx-auto     { margin: 0 auto; }
.text-center { text-align: center; }
.text-right  { text-align: right; }
.relative    { position: relative; }
.absolute    { position: absolute; }
.fixed       { position: fixed; }
.overflow-hidden { overflow: hidden; }
.flex-1      { flex: 1; }
.min-w-0     { min-width: 0; }
.shrink-0    { flex-shrink: 0; }
.rounded-full { border-radius: var(--radius-full); }
.cursor-pointer { cursor: pointer; }
.select-none { user-select: none; }
.mt-2  { margin-top: var(--space-2); }
.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mb-2  { margin-bottom: var(--space-2); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }
.py-2  { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.px-4  { padding-left: var(--space-4); padding-right: var(--space-4); }
.p-4   { padding: var(--space-4); }
.p-6   { padding: var(--space-6); }
.p-8   { padding: var(--space-8); }

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-6) 0;
}

/* Cyber grid background */
.cyber-grid {
  background-image:
    linear-gradient(rgba(255,26,26,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,26,26,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Glow pulse dot */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 6px var(--color-success);
  animation: pulse-dot 2s ease-in-out infinite;
}

/* ============================================================
   ANIMATIONS (KEYFRAMES)
   ============================================================ */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 6px currentColor; }
  50%       { opacity: 0.6; box-shadow: 0 0 12px currentColor; }
}

@keyframes pulse-right {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(255,26,26,0.2); }
  50%       { box-shadow: 0 0 40px rgba(255,26,26,0.5), 0 0 80px rgba(255,26,26,0.15); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

@keyframes scanLine {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}

@keyframes typing {
  from { width: 0; }
  to   { width: 100%; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Reveal classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slower) var(--ease-out), transform var(--duration-slower) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity var(--duration-slower) var(--ease-out), transform var(--duration-slower) var(--ease-out);
}

.reveal-left.visible { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--duration-slower) var(--ease-out), transform var(--duration-slower) var(--ease-out);
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }

/* Staggered animations */
.stagger > * { opacity: 0; transform: translateY(20px); }
.stagger.visible > *:nth-child(1) { animation: fadeInUp 0.5s var(--ease-out) 0.05s forwards; }
.stagger.visible > *:nth-child(2) { animation: fadeInUp 0.5s var(--ease-out) 0.1s forwards; }
.stagger.visible > *:nth-child(3) { animation: fadeInUp 0.5s var(--ease-out) 0.15s forwards; }
.stagger.visible > *:nth-child(4) { animation: fadeInUp 0.5s var(--ease-out) 0.2s forwards; }
.stagger.visible > *:nth-child(5) { animation: fadeInUp 0.5s var(--ease-out) 0.25s forwards; }
.stagger.visible > *:nth-child(6) { animation: fadeInUp 0.5s var(--ease-out) 0.3s forwards; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    z-index: 1001; /* Above overlay */
    box-shadow: var(--shadow-xl);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .dash-main {
    margin-left: 0;
  }
}

/* Mobile Navigation (public) */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(320px, 90vw);
  height: 100vh;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  z-index: 1001;
  transition: right var(--duration-normal) var(--ease-out);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  padding: var(--space-5);
  box-shadow: var(--shadow-xl);
}

.mobile-nav.open { right: 0; }

.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
}

.mobile-nav-overlay.open { display: block; }

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav ul { display: flex; flex-direction: column; gap: var(--space-1); flex: 1; }

.mobile-nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-2);
  transition: all var(--duration-fast);
}

.mobile-nav-link:hover {
  background: rgba(255,255,255,0.04);
  color: var(--color-white);
}

@media (max-width: 768px) {
  :root { --navbar-height: 56px; }

  .container { padding: 0 var(--space-4); }
  .section   { padding: var(--space-12) 0; }

  .navbar-nav { display: none; }
  .hamburger  { display: flex; }

  .dash-content { padding: var(--space-4); }
  .dash-topbar  { padding: 0 var(--space-4); }

  .modal { padding: var(--space-6); border-radius: var(--radius-xl); }
  .stat-value { font-size: var(--text-2xl); }
}

@media (max-width: 480px) {
  .btn-xl  { padding: 14px 24px; font-size: var(--text-base); }
  .btn-lg  { padding: 12px 24px; font-size: var(--text-base); }
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: calc(var(--z-modal) - 1);
  backdrop-filter: blur(4px);
}

@media (max-width: 1024px) {
  .sidebar-overlay.open { display: block; }
}