/* ============================================================
   ardenacademy.live — Global Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ── Design Tokens ───────────────────────────────────────── */
:root {
  /* Palette */
  --clr-primary:       #1E3A5F;
  --clr-primary-mid:   #2563EB;
  --clr-primary-light: #3B82F6;
  --clr-accent:        #F97316;
  --clr-accent-yellow: #EAB308;
  --clr-success:       #22C55E;
  --clr-warning:       #A855F7;
  --clr-danger:        #EF4444;
  --clr-info:          #06B6D4;

  /* Surfaces (Light Mode) */
  --bg-base:      #F1F5F9;
  --bg-surface:   #FFFFFF;
  --bg-surface-2: #F8FAFC;
  --bg-glass:     rgba(255,255,255,0.75);
  --border:       #E2E8F0;
  --border-light: #F1F5F9;

  /* Text (Light Mode) */
  --txt-primary:   #0F172A;
  --txt-secondary: #475569;
  --txt-muted:     #94A3B8;
  --txt-inverse:   #FFFFFF;

  /* Sidebar */
  --sidebar-bg:      #1E3A5F;
  --sidebar-txt:     rgba(255,255,255,0.75);
  --sidebar-txt-act: #FFFFFF;
  --sidebar-hover:   rgba(255,255,255,0.08);
  --sidebar-active:  rgba(255,255,255,0.15);

  /* Layout */
  --sidebar-w:       260px;
  --sidebar-w-sm:    72px;
  --header-h:        64px;
  --radius-sm:       8px;
  --radius-md:       12px;
  --radius-lg:       18px;
  --radius-xl:       24px;
  --radius-full:     9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,.08);
  --shadow-lg:  0 10px 40px rgba(0,0,0,.12);
  --shadow-xl:  0 20px 60px rgba(0,0,0,.15);
  --shadow-glow-blue:   0 0 30px rgba(37,99,235,0.25);
  --shadow-glow-orange: 0 0 30px rgba(249,115,22,0.25);

  /* Transitions */
  --ease-out: cubic-bezier(0.22,1,0.36,1);
  --ease-spring: cubic-bezier(0.34,1.56,0.64,1);
  --t-fast: 150ms;
  --t-base: 250ms;
  --t-slow: 400ms;

  /* Typography */
  --font-body: 'Inter', system-ui, sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;
}

/* ── Dark Mode ───────────────────────────────────────────── */
[data-theme="dark"] {
  --bg-base:      #0F172A;
  --bg-surface:   #1E293B;
  --bg-surface-2: #162032;
  --bg-glass:     rgba(30,41,59,0.85);
  --border:       #334155;
  --border-light: #1E293B;

  --txt-primary:   #F1F5F9;
  --txt-secondary: #94A3B8;
  --txt-muted:     #475569;

  --sidebar-bg:     #0D1829;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.3), 0 1px 2px rgba(0,0,0,.2);
  --shadow-md:  0 4px 16px rgba(0,0,0,.35);
  --shadow-lg:  0 10px 40px rgba(0,0,0,.45);
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--txt-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--t-base), color var(--t-base);
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; }
input, select, textarea { font-family: inherit; }
ul { list-style: none; }

/* ── App Shell ───────────────────────────────────────────── */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ─────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width var(--t-base) var(--ease-out), transform var(--t-base) var(--ease-out);
  overflow: hidden;
}
.sidebar.collapsed { width: var(--sidebar-w-sm); }
.sidebar-brand {
  display: flex; align-items: center; gap: 12px;
  padding: 20px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  min-height: var(--header-h);
  flex-shrink: 0;
}
.sidebar-logo {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-accent));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 18px; font-weight: 800;
  color: #fff;
  font-family: var(--font-display);
}
.sidebar-brand-text {
  opacity: 1; transition: opacity var(--t-fast);
  white-space: nowrap; overflow: hidden;
}
.sidebar.collapsed .sidebar-brand-text { opacity: 0; pointer-events: none; }
.sidebar-brand-name {
  font-family: var(--font-display);
  font-weight: 700; font-size: 1rem;
  color: #fff; line-height: 1.2;
}
.sidebar-brand-sub {
  font-size: 0.65rem; color: rgba(255,255,255,0.5);
  letter-spacing: 0.06em; text-transform: uppercase;
}
.sidebar-nav { flex: 1; overflow-y: auto; padding: 12px 0; }
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }
.nav-section-label {
  padding: 10px 18px 4px;
  font-size: 0.6rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  white-space: nowrap; overflow: hidden;
  transition: opacity var(--t-fast);
}
.sidebar.collapsed .nav-section-label { opacity: 0; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  margin: 2px 8px;
  color: var(--sidebar-txt);
  font-size: 0.875rem; font-weight: 500;
  transition: background var(--t-fast), color var(--t-fast);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
}
.nav-item:hover { background: var(--sidebar-hover); color: var(--sidebar-txt-act); }
.nav-item.active {
  background: var(--sidebar-active);
  color: var(--sidebar-txt-act);
}
.nav-item.active::before {
  content: '';
  position: absolute; left: -8px; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 20px;
  background: var(--clr-accent);
  border-radius: 0 2px 2px 0;
}
.nav-icon { width: 20px; height: 20px; flex-shrink: 0; font-size: 18px; display: flex; align-items: center; justify-content: center; }
.nav-label { transition: opacity var(--t-fast); }
.sidebar.collapsed .nav-label { opacity: 0; pointer-events: none; }
.nav-badge {
  margin-left: auto;
  background: var(--clr-accent);
  color: #fff; font-size: 0.65rem; font-weight: 700;
  padding: 2px 6px; border-radius: var(--radius-full);
  transition: opacity var(--t-fast);
}
.sidebar.collapsed .nav-badge { opacity: 0; }
.sidebar-footer {
  padding: 16px 8px;
  border-top: 1px solid rgba(255,255,255,0.08);
  flex-shrink: 0;
}
.sidebar-user {
  display: flex; align-items: center; gap: 10px;
  padding: 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--t-fast);
}
.sidebar-user:hover { background: var(--sidebar-hover); }
.user-avatar {
  width: 36px; height: 36px; flex-shrink: 0;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #F97316, #EAB308);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.8rem; color: #fff;
}
.user-info { min-width: 0; transition: opacity var(--t-fast); }
.sidebar.collapsed .user-info { opacity: 0; pointer-events: none; }
.user-name { font-size: 0.8rem; font-weight: 600; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: 0.65rem; color: rgba(255,255,255,0.45); }

/* ── Main Content ─────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
  transition: margin-left var(--t-base) var(--ease-out);
  display: flex; flex-direction: column;
}
.main-content.expanded { margin-left: var(--sidebar-w-sm); }

/* ── Top Header ──────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
  padding: 0 24px;
  transition: background var(--t-base);
}
.topbar-toggle {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: transparent;
  display: flex; align-items: center; justify-content: center;
  color: var(--txt-secondary);
  font-size: 20px;
  transition: background var(--t-fast), color var(--t-fast);
}
.topbar-toggle:hover { background: var(--border); color: var(--txt-primary); }
.topbar-title { font-size: 1rem; font-weight: 600; color: var(--txt-primary); }
.topbar-spacer { flex: 1; }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: transparent;
  display: flex; align-items: center; justify-content: center;
  color: var(--txt-secondary); font-size: 18px;
  transition: background var(--t-fast), color var(--t-fast);
  position: relative;
}
.icon-btn:hover { background: var(--border); color: var(--txt-primary); }
.icon-btn .dot {
  position: absolute; top: 6px; right: 6px;
  width: 8px; height: 8px;
  background: var(--clr-accent);
  border-radius: 50%;
  border: 2px solid var(--bg-base);
}
.theme-toggle {
  width: 56px; height: 28px;
  background: var(--border);
  border-radius: var(--radius-full);
  position: relative;
  transition: background var(--t-base);
}
[data-theme="dark"] .theme-toggle { background: var(--clr-primary-mid); }
.theme-toggle-knob {
  position: absolute;
  top: 3px; left: 3px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--bg-surface);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base) var(--ease-spring);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
}
[data-theme="dark"] .theme-toggle-knob { transform: translateX(28px); }

/* ── Page Content Wrapper ────────────────────────────────── */
.page { flex: 1; padding: 24px; }
.page-header { margin-bottom: 24px; }
.page-title {
  font-family: var(--font-display);
  font-size: 1.6rem; font-weight: 700;
  color: var(--txt-primary);
}
.page-sub { font-size: 0.875rem; color: var(--txt-secondary); margin-top: 2px; }

/* ── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: background var(--t-base), border-color var(--t-base), box-shadow var(--t-fast);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-p { padding: 20px; }
.card-p-lg { padding: 28px; }

/* ── Grid Utilities ──────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.875rem; font-weight: 600;
  transition: all var(--t-fast) var(--ease-out);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--clr-primary-mid);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37,99,235,0.3);
}
.btn-primary:hover {
  background: #1D4ED8;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37,99,235,0.4);
}
.btn-primary:active { transform: translateY(0); }
.btn-accent {
  background: var(--clr-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(249,115,22,0.3);
}
.btn-accent:hover {
  background: #EA6C0A;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(249,115,22,0.4);
}
.btn-ghost {
  background: transparent;
  color: var(--txt-secondary);
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--bg-surface-2); color: var(--txt-primary); }
.btn-danger {
  background: var(--clr-danger);
  color: #fff;
  box-shadow: 0 4px 14px rgba(239,68,68,0.3);
}
.btn-danger:hover { background: #DC2626; transform: translateY(-1px); }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: var(--radius-lg); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

/* ── Progress Bar ────────────────────────────────────────── */
.progress-track {
  height: 6px;
  background: var(--border);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 1s var(--ease-out);
}
.progress-fill-blue { background: linear-gradient(90deg, var(--clr-primary-mid), var(--clr-primary-light)); }
.progress-fill-orange { background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-yellow)); }
.progress-fill-green { background: linear-gradient(90deg, #16A34A, var(--clr-success)); }

/* ── Badges ──────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.7rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.04em;
}
.badge-live { background: rgba(239,68,68,0.12); color: var(--clr-danger); }
.badge-live::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--clr-danger); animation: pulse-dot 1.5s infinite; }
.badge-success { background: rgba(34,197,94,0.12); color: #16A34A; }
.badge-warning { background: rgba(234,179,8,0.12); color: #CA8A04; }
.badge-info { background: rgba(6,182,212,0.12); color: #0891B2; }
.badge-purple { background: rgba(168,85,247,0.12); color: #9333EA; }
.badge-orange { background: rgba(249,115,22,0.12); color: #EA580C; }

/* ── Stat Cards ──────────────────────────────────────────── */
.stat-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}
.stat-value {
  font-family: var(--font-display);
  font-size: 1.75rem; font-weight: 800;
  color: var(--txt-primary);
  line-height: 1;
}
.stat-label { font-size: 0.78rem; color: var(--txt-muted); margin-top: 4px; }
.stat-change {
  font-size: 0.75rem; font-weight: 600;
  display: flex; align-items: center; gap: 3px;
}
.stat-change.up { color: var(--clr-success); }
.stat-change.down { color: var(--clr-danger); }

/* ── Form Elements ───────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 0.8rem; font-weight: 600; color: var(--txt-secondary); }
.form-input {
  padding: 11px 14px;
  background: var(--bg-surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--txt-primary);
  font-size: 0.9rem;
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-base);
  outline: none;
}
.form-input:focus {
  border-color: var(--clr-primary-light);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
  background: var(--bg-surface);
}
.form-input::placeholder { color: var(--txt-muted); }

/* ── Toggle Switch ───────────────────────────────────────── */
.toggle-wrap { display: flex; align-items: center; gap: 10px; }
.toggle {
  width: 44px; height: 24px;
  background: var(--border);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  transition: background var(--t-base);
  flex-shrink: 0;
}
.toggle.on { background: var(--clr-primary-mid); }
.toggle-knob {
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base) var(--ease-spring);
}
.toggle.on .toggle-knob { transform: translateX(20px); }

/* ── Animations ──────────────────────────────────────────── */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-16px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes countUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes timerPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

.anim-fade-up { animation: fadeInUp 0.5s var(--ease-out) both; }
.anim-fade-up-d1 { animation-delay: 0.05s; }
.anim-fade-up-d2 { animation-delay: 0.1s; }
.anim-fade-up-d3 { animation-delay: 0.15s; }
.anim-fade-up-d4 { animation-delay: 0.2s; }
.anim-fade-up-d5 { animation-delay: 0.25s; }
.anim-scale-in { animation: scaleIn 0.4s var(--ease-out) both; }

/* ── Skeleton Loader ─────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--bg-surface-2) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* ── Modal ───────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  animation: fadeIn 0.2s;
}
.modal-box {
  background: var(--bg-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 32px;
  max-width: 440px; width: 90%;
  animation: scaleIn 0.3s var(--ease-spring);
}
.modal-title {
  font-family: var(--font-display);
  font-size: 1.25rem; font-weight: 700;
  color: var(--txt-primary);
  margin-bottom: 8px;
}
.modal-body { font-size: 0.9rem; color: var(--txt-secondary); margin-bottom: 24px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ── Divider ─────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
}
.divider-text {
  display: flex; align-items: center; gap: 12px;
  color: var(--txt-muted); font-size: 0.8rem;
}
.divider-text::before, .divider-text::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}

/* ── Tooltip ─────────────────────────────────────────────── */
[data-tooltip] { position: relative; }
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px); left: 50%;
  transform: translateX(-50%);
  background: var(--txt-primary);
  color: var(--txt-inverse);
  font-size: 0.72rem; font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity var(--t-fast);
  z-index: 99;
}
[data-tooltip]:hover::after { opacity: 1; }

/* ── Scrollbar ───────────────────────────────────────────── */
* { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--txt-muted); }

/* ── Responsive Breakpoints ──────────────────────────────── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-w) !important;
  }
  .sidebar.mobile-open { transform: translateX(0); }
  .main-content { margin-left: 0 !important; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .page { padding: 16px; }
  .topbar { padding: 0 16px; }
}
@media (max-width: 480px) {
  :root { --header-h: 56px; }
  .page-title { font-size: 1.3rem; }
}