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

/* ═══════════════════════  TOKENS  ═══════════════════════ */
:root {
  --bg:    #07070e;  --bg1: #0b0b17;  --bg2: #0f0f1e;
  --bg3:   #141426;  --bg4: #1a1a2e;  --bg5: #20203a;

  --border:  rgba(255,255,255,0.055);
  --border2: rgba(255,255,255,0.10);
  --border3: rgba(255,255,255,0.20);

  --indigo:      #6c63ff;
  --indigo2:     #9b95ff;
  --indigo-glow: rgba(108,99,255,0.30);
  --violet:      #a855f7;
  --red:         #ff4d6a;
  --green:       #3de87a;
  --amber:       #ffb340;
  --cyan:        #5e1f99;
  --pink:        #ff5db3;

  --text:  #f0f0fc;
  --text2: #8888aa;
  --text3: #44445a;

  --font-display: 'Syne', sans-serif;
  --font-body:    'Outfit', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --r:    14px;
  --r-sm:  8px;
  --r-lg: 22px;

  --spring: 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
  --expo:   0.45s cubic-bezier(0.16, 1, 0.3, 1);
  --smooth: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
  width: 100%; height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg5); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--border3); }

/* ═══════════════════════  APP SHELL  ══════════════════════ */
#app {
  display: flex;
  width: 100vw; height: 100vh;
  overflow: hidden;
  position: relative;
  isolation: isolate;
}

/* Noise texture */
#app::after {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-size: 180px 180px;
  pointer-events: none;
  z-index: 9990;
  opacity: 0.03;
}

/* Animated BG canvas */
#bg-canvas {
  position: fixed; inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ═══════════════════════  SIDEBAR  ════════════════════════ */
#sidebar {
  width: 68px;
  height: 100vh;
  background: rgba(11,11,23,0.90);
  backdrop-filter: blur(32px);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 0;
  gap: 3px;
  position: relative;
  z-index: 50;
  flex-shrink: 0;
  transition: width var(--expo);
  overflow: hidden;
}

/* Shimmering right border */
#sidebar::before {
  content: '';
  position: absolute; top: 0; right: 0;
  width: 1px; height: 100%;
  background: linear-gradient(180deg,
    transparent 0%, rgba(108,99,255,0.7) 40%,
    rgba(168,85,247,0.5) 70%, transparent 100%);
  animation: sidebarBorder 5s ease-in-out infinite;
}
@keyframes sidebarBorder {
  0%,100% { opacity: 0.2; transform: scaleY(0.4) translateY(-60%); }
  50%     { opacity: 1;   transform: scaleY(1)   translateY(0); }
}

#sidebar:hover { width: 218px; }
#sidebar:hover .nav-label { opacity: 1; transform: translateX(0); pointer-events: all; }
#sidebar:hover .logo-text  { opacity: 1; transform: translateX(0); max-width: 150px; }

/* Logo */
.logo-wrap {
  display: flex; align-items: center;
  width: 100%; padding: 0 14px 16px;
  gap: 10px; border-bottom: 1px solid var(--border);
  margin-bottom: 6px; overflow: hidden;
  min-height: 52px; flex-shrink: 0;
}

.logo-icon {
  width: 34px; height: 34px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; position: relative; overflow: hidden;
}
@keyframes logoPulse {
  0%,100% { box-shadow: 0 0 20px rgba(108,99,255,0.35); }
  50%     { box-shadow: 0 0 40px rgba(108,99,255,0.6), 0 0 60px rgba(168,85,247,0.3); }
}
.logo-icon::after {
  content: '';
  position: absolute; top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: linear-gradient(135deg, transparent 30%, rgba(255,255,255,0.25) 50%, transparent 70%);
  animation: logoShine 3s ease-in-out infinite;
}
@keyframes logoShine {
  0%   { transform: translate(-50%,-50%) rotate(0deg); }
  100% { transform: translate(50%, 50%) rotate(0deg); }
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 800; font-size: 14px;
  white-space: nowrap; opacity: 0; max-width: 0;
  transform: translateX(-10px);
  transition: opacity var(--expo), transform var(--expo), max-width var(--expo);
  overflow: hidden; line-height: 1.2;
}
.logo-text span {
  background: linear-gradient(135deg, var(--indigo2), var(--violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Nav Items */
.nav-item {
  width: calc(100% - 10px);
  height: 42px;
  display: flex; align-items: center;
  gap: 12px; padding: 0 13px;
  border-radius: 10px; cursor: pointer;
  position: relative; overflow: hidden;
  transition: color var(--smooth);
  color: var(--text3);
  margin: 0 5px; flex-shrink: 0;
}

/* Animated hover bg */
.nav-item::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(108,99,255,0.12), rgba(168,85,247,0.06));
  border-radius: 10px;
  opacity: 0; transform: scaleX(0.7);
  transform-origin: left;
  transition: opacity 0.25s var(--smooth), transform 0.25s var(--smooth);
}
.nav-item:hover::before { opacity: 1; transform: scaleX(1); }
.nav-item.active::before {
  opacity: 1; transform: scaleX(1);
  background: linear-gradient(90deg, rgba(108,99,255,0.22), rgba(168,85,247,0.10));
}
.nav-item:hover { color: var(--text); }
.nav-item.active { color: var(--indigo2); }
.nav-item.active .nav-icon {
  filter: drop-shadow(0 0 6px rgba(108,99,255,0.8));
}

/* Ripple on click */
.nav-item .ripple {
  position: absolute; border-radius: 50%;
  background: rgba(108,99,255,0.3);
  transform: scale(0); animation: ripple 0.5s ease-out;
  pointer-events: none;
}
@keyframes ripple {
  to { transform: scale(4); opacity: 0; }
}

.nav-icon {
  width: 17px; height: 17px; flex-shrink: 0;
  transition: transform var(--spring);
}
.nav-item:hover .nav-icon { transform: scale(1.18) rotate(-3deg); }
.nav-item.active .nav-icon { transform: scale(1.1); }

.nav-label {
  font-size: 13px; font-weight: 500;
  white-space: nowrap; opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.3s var(--expo), transform 0.3s var(--expo);
  pointer-events: none;
}

/* Active side bar */
.nav-active-bar {
  position: absolute; right: 0; top: 50%;
  width: 3px; height: 55%;
  background: linear-gradient(180deg, var(--indigo), var(--violet));
  border-radius: 3px 0 0 3px;
  transform: translateY(-50%) scaleY(0);
  transition: transform var(--spring);
  box-shadow: 0 0 8px var(--indigo-glow);
}
.nav-item.active .nav-active-bar { transform: translateY(-50%) scaleY(1); }

.sidebar-bottom { margin-top: auto; width: 100%; padding: 0 5px; display: flex; flex-direction: column; gap: 3px; }

/* ═══════════════════════  CONTENT AREA  ════════════════════ */
#content-area {
  flex: 1; height: 100vh; overflow: hidden;
  display: flex; flex-direction: column;
  position: relative; z-index: 1;
}

/* ═══════════════════════  TITLEBAR  ════════════════════════ */
#titlebar {
  height: 42px;
  background: rgba(11,11,23,0.85);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 16px;
  -webkit-app-region: drag;
  flex-shrink: 0; gap: 12px;
  position: relative;
}
#titlebar::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(108,99,255,0.4), rgba(168,85,247,0.3), transparent);
  animation: titlebarLine 6s ease-in-out infinite;
}
@keyframes titlebarLine {
  0%,100% { opacity: 0.4; }
  50%     { opacity: 1; }
}

.titlebar-title {
  font-family: var(--font-display);
  font-size: 13px; font-weight: 700;
  color: var(--text2); flex: 1;
  letter-spacing: 0.03em;
  transition: color 0.3s;
}

.titlebar-controls {
  display: flex; gap: 8px;
  -webkit-app-region: no-drag;
}
.tb-btn {
  width: 12px; height: 12px;
  border-radius: 50%; border: none;
  cursor: pointer; position: relative;
  transition: transform var(--smooth), box-shadow var(--smooth);
}
.tb-btn:hover { transform: scale(1.25); }
.tb-close { background: #ff5f57; }
.tb-close:hover { box-shadow: 0 0 8px rgba(255,95,87,0.8); }
.tb-min   { background: #ffbd2e; }
.tb-min:hover { box-shadow: 0 0 8px rgba(255,189,46,0.8); }
.tb-max   { background: #28c840; }
.tb-max:hover { box-shadow: 0 0 8px rgba(40,200,64,0.8); }

/* ═══════════════════════  PAGES  ════════════════════════════ */
#page-container { flex: 1; overflow: hidden; position: relative; }

.page {
  position: absolute; inset: 0;
  overflow-y: auto;
  padding: 26px 30px;
  opacity: 0;
  transform: translateY(18px) scale(0.985);
  transition: opacity 0.38s var(--expo), transform 0.38s var(--expo);
  pointer-events: none;
}
.page.active {
  opacity: 1; transform: translateY(0) scale(1);
  pointer-events: all;
}

/* ═══════════════════════  PAGE HEADER  ═════════════════════ */
.page-header {
  display: flex; align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 26px;
  animation: fadeSlideUp 0.45s var(--expo) both;
}
.page-title {
  font-family: var(--font-display);
  font-size: 26px; font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--text) 0%, rgba(240,240,252,0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-subtitle { font-size: 12px; color: var(--text3); margin-top: 5px; }

/* ═══════════════════════  CARDS  ════════════════════════════ */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 20px;
  position: relative; overflow: hidden;
  transition: border-color var(--smooth), transform 0.3s var(--spring), box-shadow 0.3s var(--smooth);
}
/* Hover shine streak */
.card::before {
  content: '';
  position: absolute; top: 0; left: -100%; right: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s var(--expo), right 0.6s var(--expo);
}
.card:hover::before { left: 0; right: 0; }
.card:hover {
  border-color: var(--border2);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.35), 0 0 0 1px var(--border);
}
.card-title {
  font-family: var(--font-display);
  font-size: 11px; font-weight: 700;
  color: var(--text3);
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-bottom: 14px;
}

/* ═══════════════════════  STAT CARDS  ══════════════════════ */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px; margin-bottom: 20px;
}

.stat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px;
  position: relative; overflow: hidden;
  cursor: default;
  transition: transform 0.35s var(--spring), box-shadow 0.3s var(--smooth), border-color var(--smooth);
  animation: fadeSlideUp 0.5s var(--expo) both;
}
.stat-card:hover {
  border-color: var(--border2);
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}
/* Glow orb in corner */
.stat-card .glow-bg {
  position: absolute; inset: 0;
  opacity: 0.08;
  transition: opacity 0.4s;
  pointer-events: none;
}
.stat-card:hover .glow-bg { opacity: 0.18; }

.stat-icon {
  width: 34px; height: 34px;
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px;
}
.stat-val {
  font-family: var(--font-mono);
  font-size: 28px; font-weight: 600;
  color: var(--text); line-height: 1;
  margin-bottom: 4px;
}
.stat-label { font-size: 11px; color: var(--text3); font-weight: 500; }
.stat-delta {
  position: absolute; top: 16px; right: 14px;
  font-family: var(--font-mono); font-size: 10px; font-weight: 600;
  padding: 3px 7px; border-radius: 99px;
}
.delta-up   { background: rgba(61,232,122,0.15); color: var(--green); }
.delta-down { background: rgba(255,77,106,0.15);  color: var(--red); }

/* ═══════════════════════  PROGRESS BARS  ═══════════════════ */
.progress-wrap {
  background: rgba(255,255,255,0.06);
  border-radius: 99px; overflow: hidden;
}
.progress-bar {
  height: 100%; border-radius: 99px;
  background: var(--indigo);
  transition: width 1.1s cubic-bezier(0.34, 1.2, 0.64, 1);
  position: relative; overflow: hidden;
}
.progress-bar::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.28), transparent);
  animation: shimmer 2.2s linear infinite;
}
@keyframes shimmer { 0% { transform: translateX(-100%); } 100% { transform: translateX(200%); } }

/* ═══════════════════════  BUTTONS  ══════════════════════════ */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 18px; border-radius: var(--r-sm);
  border: none; cursor: pointer;
  font-family: var(--font-body); font-size: 13px; font-weight: 500;
  transition: all 0.22s var(--smooth);
  position: relative; overflow: hidden;
  letter-spacing: 0.01em;
}
/* Magnetic shine overlay */
.btn::before {
  content: '';
  position: absolute; inset: 0;
  background: rgba(255,255,255,0);
  transition: background 0.22s;
  border-radius: inherit;
}
.btn:hover::before { background: rgba(255,255,255,0.07); }
.btn:active { transform: scale(0.96); }

.btn-primary {
  background: linear-gradient(135deg, var(--indigo), #5a54e8);
  color: #fff;
  box-shadow: 0 0 20px rgba(108,99,255,0.35), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-primary:hover {
  box-shadow: 0 0 32px rgba(108,99,255,0.55), 0 4px 20px rgba(108,99,255,0.3), inset 0 1px 0 rgba(255,255,255,0.2);
  transform: translateY(-1px);
}
.btn-ghost {
  background: var(--bg3); color: var(--text2);
  border: 1px solid var(--border2);
}
.btn-ghost:hover { color: var(--text); border-color: var(--border3); background: var(--bg4); }
.btn-danger { background: rgba(255,77,106,0.12); color: var(--red); border: 1px solid rgba(255,77,106,0.22); }
.btn-danger:hover { background: rgba(255,77,106,0.2); }
.btn-success { background: rgba(61,232,122,0.12); color: var(--green); border: 1px solid rgba(61,232,122,0.22); }
.btn-success:hover { background: rgba(61,232,122,0.2); }
.btn-sm { padding: 6px 12px; font-size: 12px; }

/* ═══════════════════════  INPUTS  ═══════════════════════════ */
.input, .select, .textarea {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--r-sm);
  color: var(--text);
  font-family: var(--font-body); font-size: 13px;
  padding: 10px 13px;
  transition: border-color 0.22s, box-shadow 0.22s;
  outline: none;
}
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--indigo);
  box-shadow: 0 0 0 3px rgba(108,99,255,0.18), inset 0 0 0 1px rgba(108,99,255,0.4);
}
.input::placeholder { color: var(--text3); }
.select { cursor: pointer; }
.select option { background: var(--bg3); }
.textarea { resize: vertical; min-height: 80px; }
.input-group { display: flex; flex-direction: column; gap: 6px; }
.input-label { font-size: 11px; font-weight: 600; color: var(--text2); letter-spacing: 0.04em; text-transform: uppercase; }

/* ═══════════════════════  MODAL  ════════════════════════════ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center;
  z-index: 200;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s var(--smooth);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: linear-gradient(145deg, var(--bg2), var(--bg3));
  border: 1px solid var(--border2);
  border-radius: var(--r-lg);
  padding: 28px;
  width: 480px; max-width: 90vw;
  max-height: 82vh; overflow-y: auto;
  transform: scale(0.88) translateY(24px);
  transition: transform var(--spring);
  box-shadow: 0 40px 100px rgba(0,0,0,0.7), 0 0 0 1px var(--border);
  position: relative;
}
.modal::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(108,99,255,0.6), rgba(168,85,247,0.4), transparent);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 22px;
}
.modal-title { font-family: var(--font-display); font-size: 18px; font-weight: 700; }
.modal-close {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--bg4); border: 1px solid var(--border2);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  color: var(--text2); transition: all var(--smooth);
}
.modal-close:hover { background: var(--bg5); color: var(--text); transform: rotate(90deg); }
.modal-footer { display: flex; gap: 10px; justify-content: flex-end; margin-top: 22px; }

/* ═══════════════════════  BADGES  ═══════════════════════════ */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 9px; border-radius: 99px;
  font-family: var(--font-mono); font-size: 10px; font-weight: 600;
}
.badge-indigo { background: rgba(108,99,255,0.18); color: var(--indigo2); border: 1px solid rgba(108,99,255,0.28); }
.badge-green  { background: rgba(61,232,122,0.15);  color: var(--green);   border: 1px solid rgba(61,232,122,0.25); }
.badge-red    { background: rgba(255,77,106,0.15);   color: var(--red);     border: 1px solid rgba(255,77,106,0.25); }
.badge-amber  { background: rgba(255,179,64,0.15);   color: var(--amber);   border: 1px solid rgba(255,179,64,0.25); }
.badge-cyan   { background: rgba(56,232,245,0.15);   color: var(--cyan);    border: 1px solid rgba(56,232,245,0.25); }

/* ═══════════════════════  GRIDS  ════════════════════════════ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* ═══════════════════════  TOAST  ════════════════════════════ */
#toast-container {
  position: fixed; bottom: 22px; right: 22px;
  z-index: 9999;
  display: flex; flex-direction: column; gap: 8px;
  pointer-events: none;
}
.toast {
  background: linear-gradient(135deg, var(--bg3), var(--bg4));
  border: 1px solid var(--border2);
  border-radius: 10px;
  padding: 11px 16px;
  font-size: 13px; color: var(--text);
  box-shadow: 0 8px 32px rgba(0,0,0,0.45), 0 0 0 1px var(--border);
  animation: toastIn 0.45s cubic-bezier(0.34,1.4,0.64,1) both;
  max-width: 300px;
  border-left: 3px solid var(--indigo);
  display: flex; align-items: center; gap: 10px;
  backdrop-filter: blur(12px);
}
.toast.success { border-left-color: var(--green); }
.toast.error   { border-left-color: var(--red); }
.toast.warning { border-left-color: var(--amber); }
@keyframes toastIn  { from { opacity:0; transform: translateX(48px) scale(0.9); } to { opacity:1; transform:translateX(0) scale(1); } }
@keyframes toastOut { from { opacity:1; transform:translateX(0) scale(1); }       to { opacity:0; transform: translateX(48px) scale(0.9); } }

/* ═══════════════════════  TAB BAR  ═════════════════════════ */
.tab-bar {
  display: flex; gap: 3px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 4px; width: fit-content;
}
.tab-btn {
  padding: 6px 15px; border-radius: 6px;
  font-size: 12px; font-weight: 500;
  cursor: pointer; color: var(--text3);
  transition: all 0.2s var(--smooth);
  border: none; background: none;
  font-family: var(--font-body);
}
.tab-btn.active {
  background: linear-gradient(135deg, var(--indigo), #5a54e8);
  color: #fff;
  box-shadow: 0 2px 12px rgba(108,99,255,0.4);
}
.tab-btn:hover:not(.active) { color: var(--text); background: var(--bg3); }

/* ═══════════════════════  CHIP  ════════════════════════════ */
.chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 99px;
  font-size: 10px; font-weight: 600;
  background: var(--bg4); color: var(--text2);
  border: 1px solid var(--border); letter-spacing: 0.03em;
}

/* ═══════════════════════  LOADER  ══════════════════════════ */
.loader {
  width: 18px; height: 18px;
  border: 2px solid var(--border2);
  border-top-color: var(--indigo);
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
  flex-shrink: 0;
}
.loader-lg { width: 36px; height: 36px; border-width: 3px; }

/* ═══════════════════════  EMPTY STATE  ═════════════════════ */
.empty-state {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; padding: 52px 20px;
  color: var(--text3); gap: 12px; text-align: center;
}
.empty-state svg { opacity: 0.25; }
.empty-state p { font-size: 13px; }

/* ═══════════════════════  DIVIDER  ═════════════════════════ */
.divider { height: 1px; background: var(--border); margin: 16px 0; }

/* ═══════════════════════  TOOLTIP  ═════════════════════════ */
[data-tip] { position: relative; }
[data-tip]::after {
  content: attr(data-tip);
  position: absolute; bottom: 115%; left: 50%;
  transform: translateX(-50%) translateY(6px);
  background: var(--bg5);
  border: 1px solid var(--border2);
  color: var(--text); font-size: 11px;
  padding: 5px 10px; border-radius: 7px;
  white-space: nowrap; opacity: 0; pointer-events: none;
  transition: opacity 0.18s, transform 0.18s;
  z-index: 500; font-family: var(--font-body);
}
[data-tip]:hover::after { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ═══════════════════════  STAGGER HELPERS  ══════════════════ */
.s1 { animation-delay: 0.05s; }
.s2 { animation-delay: 0.10s; }
.s3 { animation-delay: 0.15s; }
.s4 { animation-delay: 0.20s; }
.s5 { animation-delay: 0.25s; }

/* ═══════════════════════  KEYFRAMES  ═══════════════════════ */
@keyframes fadeSlideUp {
  from { opacity:0; transform: translateY(22px) scale(0.98); }
  to   { opacity:1; transform: translateY(0)    scale(1); }
}
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes spin   { to { transform: rotate(360deg); } }
@keyframes pulse  { 0%,100% { opacity:1; } 50% { opacity:0.45; } }
@keyframes bounceIn {
  0%   { transform: scale(0.45); opacity: 0; }
  55%  { transform: scale(1.12); }
  75%  { transform: scale(0.95); }
  100% { transform: scale(1);    opacity: 1; }
}
@keyframes glowPulse {
  0%,100% { box-shadow: 0 0 8px  var(--indigo-glow); }
  50%     { box-shadow: 0 0 28px rgba(108,99,255,0.7); }
}
@keyframes floatY {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-6px); }
}
@keyframes scaleIn {
  from { transform: scale(0.8); opacity:0; }
  to   { transform: scale(1);   opacity:1; }
}

/* ═══════════════════════  KATEX  ═══════════════════════════ */
.katex { font-size: 1.05em !important; color: var(--text); }
.katex-display { overflow-x: auto; padding: 10px 0; margin: 8px 0 !important; }
.katex-display > .katex { background: var(--bg4); padding: 10px 16px; border-radius: 8px; border: 1px solid var(--border2); display: block; text-align: center; }
.katex .mord, .katex .minner { color: var(--text); }
.katex .mop, .katex .mrel { color: var(--indigo2); }
.katex .mbin { color: var(--amber); }
.katex .mopen, .katex .mclose { color: var(--text2); }
.katex .mfrac .frac-line { border-color: var(--text2); }
#streak-badge {
  display: flex; align-items: center; gap: 6px;
  background: rgba(255,179,64,0.10);
  border: 1px solid rgba(255,179,64,0.22);
  border-radius: 99px; padding: 3px 10px;
  animation: floatY 4s ease-in-out infinite;
}
/* ══════════════════════════════════════════════════
   MOCK TEST STYLES
══════════════════════════════════════════════════ */
.sec-tab { padding:6px 16px;border-radius:6px;font-size:12px;font-weight:600;cursor:pointer;border:1px solid var(--border2);background:var(--bg3);color:var(--text3);transition:all 0.2s;font-family:var(--font-body); }
.sec-tab.active { background:var(--indigo);color:#fff;border-color:var(--indigo);box-shadow:0 0 12px rgba(108,99,255,0.35); }

.qp-btn { width:36px;height:36px;border-radius:8px;border:1.5px solid var(--border2);background:var(--bg3);color:var(--text3);font-family:var(--font-mono);font-size:12px;font-weight:600;cursor:pointer;transition:all 0.15s; }
.qp-btn.ans      { background:rgba(61,232,122,0.15);border-color:rgba(61,232,122,0.5);color:var(--green); }
.qp-btn.review   { background:rgba(168,85,247,0.15);border-color:rgba(168,85,247,0.5);color:var(--violet); }
.qp-btn.visited  { background:var(--bg4);border-color:var(--border3);color:var(--text2); }
.qp-btn.current  { box-shadow:0 0 0 2.5px var(--indigo);border-color:var(--indigo); }

.opt-btn { display:flex;align-items:flex-start;gap:12px;padding:13px 16px;border-radius:10px;border:1.5px solid var(--border2);background:var(--bg2);cursor:pointer;transition:all 0.18s;width:100%;text-align:left;font-family:var(--font-body);font-size:13px;color:var(--text2); }
.opt-btn:hover { border-color:var(--border3);background:var(--bg3); }
.opt-btn.selected { border-color:var(--indigo);background:rgba(108,99,255,0.1);color:var(--text); }
.opt-btn.selected .opt-letter { background:var(--indigo);color:#fff;border-color:var(--indigo); }
.opt-btn.multi-sel { border-color:var(--violet);background:rgba(168,85,247,0.1);color:var(--text); }
.opt-btn.multi-sel .opt-letter { background:var(--violet);color:#fff;border-color:var(--violet); }
.opt-letter { width:30px;height:30px;border-radius:50%;border:1.5px solid var(--border2);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;flex-shrink:0;transition:all 0.15s; }

.int-input { font-family:var(--font-mono);font-size:28px;font-weight:700;text-align:center;width:180px;padding:14px;border-radius:12px;background:var(--bg3);border:2px solid var(--border2);color:var(--text);outline:none;transition:border-color 0.2s; }
.int-input:focus { border-color:var(--indigo);box-shadow:0 0 0 3px rgba(108,99,255,0.15); }

/* Test layout inside page-mocktest */
#mt-shell { display:grid;grid-template-columns:1fr 260px;height:calc(100vh - 46px);overflow:hidden; }
#mt-q-area { display:flex;flex-direction:column;overflow:hidden; }
#mt-topbar { display:flex;align-items:center;gap:12px;padding:0 20px;height:52px;background:var(--bg1);border-bottom:1px solid var(--border);flex-shrink:0; }
#mt-body { flex:1;overflow-y:auto;padding:22px 28px; }
#mt-footer { padding:12px 20px;border-top:1px solid var(--border);background:var(--bg1);display:flex;align-items:center;gap:10px;flex-shrink:0; }
#mt-panel { background:var(--bg1);border-left:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden; }
#mt-panel-top { padding:14px 16px;border-bottom:1px solid var(--border);flex-shrink:0; }
#mt-panel-body { flex:1;overflow-y:auto;padding:14px; }
#mt-panel-footer { padding:12px 14px;border-top:1px solid var(--border);flex-shrink:0; }
#mt-timer { font-family:var(--font-mono);font-size:20px;font-weight:800;letter-spacing:0.05em;transition:color 0.3s; }

.q-review-card { background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:16px;margin-bottom:10px; }
.q-review-card.correct { border-color:rgba(61,232,122,0.3);background:rgba(61,232,122,0.03); }
.q-review-card.wrong   { border-color:rgba(255,77,106,0.3);background:rgba(255,77,106,0.03); }
.q-review-card.skipped { border-color:rgba(255,179,64,0.18); }