/* ============================================================
   STUDYBOARD — Modern Refined Interface
   Typography: Plus Jakarta Sans + JetBrains Mono
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400;1,600&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* =============================================
   TOKENS — Dark (default)
   ============================================= */
:root {
  /* Surfaces */
  --bg:           #0D0D0F;
  --bg-elevated:  #111114;
  --bg-overlay:   #17171B;
  --bg-hover:     #1D1D22;
  --bg-active:    #22222A;

  /* Borders */
  --line:         rgba(255,255,255,0.065);
  --line-strong:  rgba(255,255,255,0.12);
  --line-focus:   rgba(234,179,8,0.5);

  /* Text */
  --t1:           #F2F2F5;
  --t2:           #8B8B9A;
  --t3:           #52525F;
  --t-accent:     #EAB308;

  /* Brand — warm amber/gold */
  --accent:       #EAB308;
  --accent-dim:   rgba(234,179,8,0.12);
  --accent-glow:  rgba(234,179,8,0.08);
  --accent-dark:  #CA8A04;

  /* Functional */
  --green:   #22C55E;
  --green-d: rgba(34,197,94,0.12);
  --blue:    #3B82F6;
  --blue-d:  rgba(59,130,246,0.12);
  --red:     #EF4444;
  --red-d:   rgba(239,68,68,0.12);
  --orange:  #F97316;
  --orange-d:rgba(249,115,22,0.12);
  --purple:  #A855F7;
  --purple-d:rgba(168,85,247,0.12);
  --teal:    #14B8A6;
  --teal-d:  rgba(20,184,166,0.12);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 0 1px var(--line), 0 4px 24px rgba(0,0,0,0.5);

  /* Radii */
  --r-sm:  4px;
  --r-md:  8px;
  --r-lg:  12px;
  --r-xl:  16px;
  --r-full:9999px;

  /* Spacing */
  --sidebar-w: 220px;

  /* Animation */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.0, 0.0, 0.2, 1);
  --dur: 180ms;
  --dur-slow: 320ms;
}

/* =============================================
   TOKENS — Light
   ============================================= */
[data-theme="light"] {
  --bg:           #FAFAF8;
  --bg-elevated:  #FFFFFF;
  --bg-overlay:   #F4F4F0;
  --bg-hover:     #EEEEE8;
  --bg-active:    #E5E5DC;

  --line:         rgba(0,0,0,0.07);
  --line-strong:  rgba(0,0,0,0.14);
  --line-focus:   rgba(234,179,8,0.5);

  --t1:           #111112;
  --t2:           #6B6B78;
  --t3:           #ABABBA;
  --t-accent:     #A16207;

  --accent:       #D97706;
  --accent-dim:   rgba(217,119,6,0.1);
  --accent-glow:  rgba(217,119,6,0.06);
  --accent-dark:  #B45309;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 0 1px var(--line), 0 4px 16px rgba(0,0,0,0.06);
}

/* =============================================
   RESET
   ============================================= */
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { font-size:15px; scroll-behavior:smooth; }
body {
  font-family:'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--t1);
  min-height:100vh;
  display:flex;
  overflow-x:hidden;
  -webkit-font-smoothing: antialiased;
  transition: background var(--dur-slow), color var(--dur-slow);
}
h1,h2,h3,h4 { font-family:'Plus Jakarta Sans', sans-serif; font-weight:600; line-height:1.25; }
a { color:var(--accent); text-decoration:none; }
button { cursor:pointer; border:none; background:none; font-family:inherit; font-size:inherit; color:inherit; }
input,textarea,select {
  font-family:inherit; font-size:0.9rem;
  background:var(--bg-overlay); border:1px solid var(--line);
  border-radius:var(--r-md); color:var(--t1); padding:8px 12px;
  outline:none; width:100%;
  transition: border-color var(--dur), box-shadow var(--dur);
}
input:focus,textarea:focus,select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
select option { background: var(--bg-overlay); }

/* =============================================
   SCROLLBAR
   ============================================= */
::-webkit-scrollbar { width:4px; height:4px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--line-strong); border-radius:var(--r-full); }

/* =============================================
   SIDEBAR — Linear-style thin nav
   ============================================= */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-elevated);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 200;
  transition: transform var(--dur-slow) var(--ease), background var(--dur-slow);
  overflow: hidden;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--line);
}

.logo-mark {
  width: 30px; height: 30px;
  background: var(--accent);
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 15px;
  box-shadow: 0 0 20px rgba(234,179,8,0.3);
}

.logo-text { line-height:1; }
.logo-name {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700; font-size: 0.95rem;
  color: var(--t1); letter-spacing: -0.02em;
}
.logo-tag { font-size: 0.65rem; color: var(--t3); margin-top: 1px; }

/* Nav sections */
.sidebar-section { padding: 12px 10px 4px; }
.sidebar-section-label {
  font-size: 0.63rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--t3);
  padding: 0 6px 6px;
}

.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 10px;
  border-radius: var(--r-md);
  font-size: 0.875rem; font-weight: 500;
  color: var(--t2);
  cursor: pointer;
  transition: all var(--dur) var(--ease);
  position: relative;
  user-select: none;
}
.nav-item:hover { background: var(--bg-hover); color: var(--t1); }
.nav-item.active {
  background: var(--accent-dim);
  color: var(--t-accent);
}
.nav-item.active::before {
  content:'';
  position:absolute; left:0; top:25%; height:50%;
  width:2.5px; background:var(--accent);
  border-radius:0 var(--r-full) var(--r-full) 0;
}
.nav-icon { font-size: 0.95rem; width:18px; text-align:center; flex-shrink:0; }
.nav-label { flex:1; }
.nav-badge {
  background: var(--red); color:#fff;
  font-size:0.6rem; font-weight:700;
  padding:1px 5px; border-radius:var(--r-full);
}

/* Sidebar bottom — XP + streak */
.sidebar-bottom {
  margin-top: auto;
  padding: 10px;
  border-top: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 8px;
}

/* Level pill */
.level-pill {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  background: var(--bg-overlay);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
}
.level-icon { font-size:1.1rem; flex-shrink:0; }
.level-info { flex:1; min-width:0; }
.level-name {
  font-size: 0.78rem; font-weight: 600; color: var(--t1);
  display:flex; justify-content:space-between;
}
.level-xp { font-size:0.63rem; color:var(--t3); font-family:'JetBrains Mono',monospace; }
.level-bar {
  height:3px; background:var(--line); border-radius:var(--r-full); margin-top:4px; overflow:hidden;
}
.level-bar-fill {
  height:100%; background:var(--accent);
  border-radius:var(--r-full);
  transition: width 0.8s var(--ease);
}

/* Streak */
.streak-pill {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background var(--dur);
}
.streak-pill:hover { background: var(--bg-hover); }
.streak-num {
  font-family:'Plus Jakarta Sans', sans-serif;
  font-weight:700; font-size:1.4rem; color:var(--orange);
  line-height:1;
}
.streak-label { font-size:0.7rem; color:var(--t3); }
.streak-fire { font-size:1.2rem; }

/* =============================================
   MAIN
   ============================================= */
.main {
  margin-left: var(--sidebar-w);
  flex:1; display:flex; flex-direction:column;
  min-height:100vh;
}

/* =============================================
   PAGE CHROME — Topbar
   ============================================= */
.page-topbar {
  position: sticky; top:0; z-index:100;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 0 28px;
  height: 52px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(13,13,15,0.88);
  transition: background var(--dur-slow);
}

[data-theme="light"] .page-topbar {
  background: rgba(250,250,248,0.88);
}

.topbar-left {
  display:flex; align-items:center; gap:10px;
}

.topbar-breadcrumb {
  display:flex; align-items:center; gap:6px;
  font-size:0.82rem; color:var(--t3);
}
.topbar-breadcrumb span { color:var(--t2); }
.topbar-breadcrumb strong { color:var(--t1); font-weight:600; }

.topbar-right { display:flex; align-items:center; gap:8px; }

/* Theme toggle button — proper design */
.theme-toggle {
  width:34px; height:34px;
  border-radius:var(--r-md);
  background:var(--bg-overlay);
  border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  font-size:0.9rem;
  cursor:pointer;
  transition: all var(--dur) var(--ease);
  flex-shrink:0;
}
.theme-toggle:hover { background:var(--bg-hover); border-color:var(--line-strong); }

.mobile-menu-trigger {
  display:none;
  width:34px; height:34px;
  border-radius:var(--r-md);
  background:var(--bg-overlay);
  border:1px solid var(--line);
  align-items:center; justify-content:center;
  cursor:pointer;
  transition: background var(--dur);
}
.mobile-menu-trigger:hover { background:var(--bg-hover); }

/* =============================================
   PAGE CONTENT
   ============================================= */
.page-body {
  padding: 28px;
  flex:1;
  overflow-y:auto;
}

.view { display:none; }
.view.active { display:block; }

/* =============================================
   PAGE HEADER (inside views)
   ============================================= */
.view-header {
  margin-bottom: 24px;
}
.view-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700; font-size: 1.65rem;
  color: var(--t1); letter-spacing:-0.03em;
  line-height:1.15;
}
.view-desc { font-size:0.875rem; color:var(--t2); margin-top:4px; }

/* =============================================
   BLOCKS — the building blocks
   ============================================= */

/* A "panel" — our main container */
.panel {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  transition: background var(--dur-slow), border-color var(--dur-slow);
}

/* Divider inside panel */
.panel-divider { height:1px; background:var(--line); }

/* Panel header */
.panel-head {
  padding:14px 18px;
  display:flex; align-items:center; justify-content:space-between;
  gap:12px;
}
.panel-title {
  font-size:0.78rem; font-weight:600;
  text-transform:uppercase; letter-spacing:0.07em;
  color:var(--t3);
  display:flex; align-items:center; gap:6px;
}
.panel-body { padding:18px; }
.panel-body-sm { padding:12px 18px; }

/* =============================================
   DASHBOARD
   ============================================= */
.dash-grid {
  display:grid;
  gap:14px;
}

/* Hero row: countdown (big) + 4 stats */
.dash-hero {
  display:grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap:14px;
}

/* Countdown — the hero block */
.countdown-block {
  grid-column: span 2;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: 24px 26px;
  position: relative;
  overflow: hidden;
  display:flex; flex-direction:column; justify-content:space-between;
  min-height:140px;
}

.countdown-block::after {
  content:'';
  position:absolute;
  top:-60px; right:-60px;
  width:200px; height:200px;
  background: radial-gradient(circle, rgba(234,179,8,0.08) 0%, transparent 70%);
  pointer-events:none;
}

.countdown-eyebrow {
  font-size:0.7rem; font-weight:600;
  text-transform:uppercase; letter-spacing:0.1em;
  color:var(--accent);
  display:flex; align-items:center; gap:6px;
}
.countdown-eyebrow::before {
  content:'';
  display:inline-block; width:6px; height:6px;
  border-radius:50%; background:var(--accent);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%,100% { opacity:1; transform:scale(1); }
  50% { opacity:0.5; transform:scale(0.8); }
}

.countdown-number {
  font-family:'Plus Jakarta Sans', sans-serif;
  font-weight:800; font-size:4.2rem;
  color:var(--t1); line-height:1;
  letter-spacing:-0.04em;
}

.countdown-footer {
  display:flex; align-items:center; justify-content:space-between;
}
.countdown-label { font-size:0.78rem; color:var(--t2); }
.countdown-date { font-size:0.72rem; color:var(--t3); font-family:'JetBrains Mono',monospace; }

/* Stat cards */
.stat-block {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: 20px 22px;
  display:flex; flex-direction:column; gap:2px;
  transition: border-color var(--dur), transform var(--dur) var(--ease);
}
.stat-block:hover { border-color: var(--line-strong); transform:translateY(-1px); }
.stat-block-label {
  font-size:0.72rem; font-weight:500;
  color:var(--t3); text-transform:uppercase; letter-spacing:0.06em;
}
.stat-block-value {
  font-family:'Plus Jakarta Sans', sans-serif;
  font-weight:700; font-size:2rem;
  color:var(--t1); line-height:1.1;
  letter-spacing:-0.03em;
}
.stat-block-sub { font-size:0.72rem; color:var(--t3); margin-top:2px; }
.stat-block-icon { font-size:1rem; margin-bottom:4px; }

/* Quote */
.quote-block {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-lg);
  padding: 14px 18px;
  display:flex; align-items:flex-start; gap:12px;
}
.quote-body { flex:1; }
.quote-text-inner {
  font-size:0.875rem; font-style:italic;
  color:var(--t2); line-height:1.6;
}
.quote-author-inner {
  font-size:0.72rem; color:var(--t3); margin-top:4px;
  font-style:normal;
}

/* Goal block */
.goal-block {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: 20px;
  display:flex; gap:16px; align-items:center;
}

/* Subject ring items */
.subject-rings {
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:10px;
}
.subject-ring-item {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: 16px 10px;
  display:flex; flex-direction:column; align-items:center; gap:8px;
  cursor:pointer;
  transition: all var(--dur) var(--ease);
}
.subject-ring-item:hover {
  border-color: var(--line-strong);
  background: var(--bg-overlay);
  transform:translateY(-2px);
  box-shadow: var(--shadow-md);
}
.subject-ring-label {
  font-size:0.72rem; font-weight:600; color:var(--t2);
  text-align:center; line-height:1.3;
}
.subject-ring-pct { font-family:'JetBrains Mono',monospace; font-size:0.65rem; color:var(--t3); }

/* Week chart panel */
.chart-block {
  background:var(--bg-elevated);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:18px 20px;
}
.chart-block-title {
  font-size:0.78rem; font-weight:600;
  text-transform:uppercase; letter-spacing:0.07em;
  color:var(--t3); margin-bottom:14px;
  display:flex; align-items:center; gap:6px;
}
.chart-canvas-wrap { position:relative; height:200px; }
.chart-canvas-wrap canvas { width:100% !important; }

/* Revision list */
.revision-block {
  background:var(--bg-elevated);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  overflow:hidden;
}
.revision-row {
  display:flex; align-items:center; gap:10px;
  padding:10px 16px;
  border-bottom:1px solid var(--line);
  font-size:0.84rem;
  transition:background var(--dur);
}
.revision-row:last-child { border-bottom:none; }
.revision-row:hover { background:var(--bg-hover); }
.revision-dot-small {
  width:6px; height:6px; border-radius:50%;
  background:var(--green); flex-shrink:0;
}

/* =============================================
   SYLLABUS
   ============================================= */

/* Filter row */
.filter-bar {
  display:flex; gap:8px; align-items:center;
  margin-bottom:18px; flex-wrap:wrap;
}
.filter-tabs { display:flex; gap:5px; flex-wrap:wrap; flex:1; }

.subj-tab {
  padding:5px 12px;
  border-radius:var(--r-full);
  font-size:0.8rem; font-weight:500;
  color:var(--t2);
  background:var(--bg-elevated);
  border:1px solid var(--line);
  cursor:pointer;
  transition:all var(--dur) var(--ease);
  white-space:nowrap;
  display:flex; align-items:center; gap:5px;
}
.subj-tab:hover { border-color:var(--line-strong); color:var(--t1); }
.subj-tab.active { color:#000; border-color:transparent; font-weight:600; }

/* Search */
.search-wrap { position:relative; min-width:200px; }
.search-wrap input { padding-left:32px; }
.search-wrap::before {
  content:'⌕';
  position:absolute; left:10px; top:50%;
  transform:translateY(-50%);
  color:var(--t3); font-size:1rem;
  pointer-events:none; z-index:1;
}

/* Tick legend strip */
.tick-strip {
  display:flex; gap:6px; flex-wrap:wrap;
  padding:12px 16px;
  background:var(--bg-elevated);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  margin-bottom:16px;
  align-items:center;
}
.tick-strip-label { font-size:0.7rem; color:var(--t3); font-weight:600; text-transform:uppercase; letter-spacing:0.06em; margin-right:2px; }

/* Chapter cards */
.chapter-list { display:flex; flex-direction:column; gap:8px; }

.chapter-card {
  background:var(--bg-elevated);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  overflow:hidden;
  transition:border-color var(--dur);
}
.chapter-card.open { border-color:var(--line-strong); }

.chapter-header {
  display:flex; align-items:center; gap:10px;
  padding:12px 16px;
  cursor:pointer;
  transition:background var(--dur);
  user-select:none;
}
.chapter-header:hover { background:var(--bg-hover); }

.chapter-num {
  font-family:'JetBrains Mono',monospace;
  font-size:0.68rem; color:var(--t3); min-width:26px;
}
.chapter-name {
  flex:1; font-weight:600; font-size:0.875rem; color:var(--t1);
  line-height:1.3;
}

.chapter-progress-pill {
  display:flex; align-items:center; gap:8px;
  flex-shrink:0;
}
.prog-bar {
  width:80px; height:4px;
  background:var(--bg-active);
  border-radius:var(--r-full); overflow:hidden;
}
.prog-bar-fill { height:100%; border-radius:var(--r-full); transition:width 0.5s var(--ease); }
.prog-pct { font-family:'JetBrains Mono',monospace; font-size:0.65rem; color:var(--t3); min-width:28px; text-align:right; }

.chapter-chevron { color:var(--t3); font-size:0.65rem; transition:transform var(--dur) var(--ease); flex-shrink:0; }
.chapter-card.open .chapter-chevron { transform:rotate(90deg); }

.topics-list {
  display:none; flex-direction:column;
  padding:4px 14px 12px 14px;
  gap:4px;
}
.chapter-card.open .topics-list { display:flex; }

.topic-row {
  display:flex; align-items:center; gap:8px;
  padding:7px 10px;
  border-radius:var(--r-md);
  background:var(--bg-overlay);
  border:1px solid transparent;
  transition:all var(--dur);
}
.topic-row:hover { border-color:var(--line); }

.topic-name {
  flex:1; font-size:0.84rem; color:var(--t2); line-height:1.4;
  transition:color var(--dur);
}
.topic-name.done-text { text-decoration:line-through; color:var(--t3); }

/* TICK BUTTON — unique design */
.tick-btn {
  display:flex; align-items:center; gap:5px;
  padding:4px 10px;
  border-radius:var(--r-sm);
  font-size:0.72rem; font-weight:600;
  border:1px solid currentColor;
  cursor:pointer; min-width:100px;
  justify-content:center;
  transition:all var(--dur) var(--ease);
  font-family:'JetBrains Mono',monospace;
  letter-spacing:0.01em;
}
.tick-btn:hover { opacity:0.85; transform:scale(1.03); }
.tick-btn:active { transform:scale(0.97); }
.tick-btn .tick-icon { font-size:0.8rem; }

/* Revision schedule mini-btn */
.topic-revision-btn {
  width:28px; height:28px;
  border-radius:var(--r-md);
  background:transparent;
  border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  font-size:0.75rem; cursor:pointer;
  transition:all var(--dur);
  color:var(--t3);
  flex-shrink:0;
}
.topic-revision-btn:hover { color:var(--green); border-color:var(--green); background:var(--green-d); }

.add-topic-inline {
  display:flex; align-items:center; gap:6px;
  padding:6px 10px;
  border-radius:var(--r-md);
  border:1px dashed var(--line);
  color:var(--t3); font-size:0.78rem;
  cursor:pointer; transition:all var(--dur);
  background:transparent; width:100%; margin-top:2px;
}
.add-topic-inline:hover { border-color:var(--accent); color:var(--accent); background:var(--accent-glow); }

/* =============================================
   PROGRESS
   ============================================= */
.progress-layout {
  display:grid; grid-template-columns:1fr 1fr; gap:14px;
}
.progress-layout .full-width { grid-column:1/-1; }

/* Breakdown strip */
.breakdown-strip {
  display:flex; gap:8px; flex-wrap:wrap;
  padding:16px 20px;
  background:var(--bg-elevated);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  margin-bottom:14px;
}

.breakdown-chip {
  display:flex; flex-direction:column; align-items:center;
  padding:10px 16px;
  border-radius:var(--r-lg);
  border:1px solid;
  gap:3px; flex:1; min-width:80px; text-align:center;
}
.breakdown-chip-icon { font-size:1.1rem; }
.breakdown-chip-num {
  font-family:'Plus Jakarta Sans',sans-serif; font-weight:700; font-size:1.5rem;
  line-height:1;
}
.breakdown-chip-label { font-size:0.65rem; font-weight:600; text-transform:uppercase; letter-spacing:0.05em; opacity:0.8; }
.breakdown-chip-pct { font-size:0.65rem; color:var(--t3); font-family:'JetBrains Mono',monospace; }

/* Tables */
.data-table { width:100%; border-collapse:collapse; font-size:0.84rem; }
.data-table th {
  text-align:left; padding:8px 12px;
  color:var(--t3); font-size:0.68rem;
  text-transform:uppercase; letter-spacing:0.06em;
  border-bottom:1px solid var(--line); font-weight:500;
}
.data-table td {
  padding:10px 12px;
  border-bottom:1px solid var(--line);
  color:var(--t1); vertical-align:middle;
}
.data-table tr:last-child td { border-bottom:none; }
.data-table tr:hover td { background:var(--bg-hover); }

.inline-bar { display:flex; align-items:center; gap:8px; }
.inline-bar-track {
  flex:1; height:5px; background:var(--bg-active);
  border-radius:var(--r-full); overflow:hidden;
}
.inline-bar-fill { height:100%; border-radius:var(--r-full); transition:width 0.5s var(--ease); }
.inline-bar-pct { font-family:'JetBrains Mono',monospace; font-size:0.68rem; color:var(--t3); min-width:30px; text-align:right; }

/* Heatmap */
.heatmap-grid { display:flex; gap:3px; flex-wrap:wrap; }
.heatmap-day {
  width:13px; height:13px; border-radius:3px;
  background:var(--bg-active); border:1px solid var(--line);
  cursor:default; transition:transform var(--dur);
  position:relative;
}
.heatmap-day:hover { transform:scale(1.3); }
.heatmap-day[data-count="1"] { background:rgba(234,179,8,0.2); border-color:rgba(234,179,8,0.3); }
.heatmap-day[data-count="2"] { background:rgba(234,179,8,0.45); border-color:rgba(234,179,8,0.5); }
.heatmap-day[data-count="3"] { background:rgba(234,179,8,0.7); border-color:rgba(234,179,8,0.7); }
.heatmap-day[data-count="4"] { background:#EAB308; border-color:#EAB308; }

/* Weak topics */
.weak-item {
  display:flex; align-items:center; gap:10px;
  padding:10px 0; border-bottom:1px solid var(--line);
}
.weak-item:last-child { border-bottom:none; }
.weak-dot { width:6px; height:6px; border-radius:50%; background:var(--orange); flex-shrink:0; }
.weak-name { flex:1; font-size:0.84rem; color:var(--t2); }
.weak-subject { font-size:0.68rem; padding:2px 7px; border-radius:var(--r-full); background:var(--bg-hover); color:var(--t3); }
.weak-days { font-size:0.68rem; color:var(--orange); white-space:nowrap; font-family:'JetBrains Mono',monospace; }

/* =============================================
   PLANNER
   ============================================= */
.planner-cols { display:grid; grid-template-columns:1fr 300px; gap:16px; }

/* Date nav */
.date-nav {
  display:flex; align-items:center; gap:8px; margin-bottom:18px;
}
.date-nav-btn {
  width:32px; height:32px; border-radius:var(--r-md);
  background:var(--bg-elevated); border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  font-size:0.85rem; color:var(--t2); cursor:pointer;
  transition:all var(--dur);
}
.date-nav-btn:hover { background:var(--bg-hover); color:var(--t1); }
.date-display {
  font-family:'Plus Jakarta Sans',sans-serif; font-weight:600;
  font-size:0.95rem; color:var(--t1); flex:1; text-align:center;
}
.date-today-badge {
  font-size:0.68rem; padding:2px 8px;
  background:var(--accent-dim); color:var(--t-accent);
  border-radius:var(--r-full); border:1px solid var(--accent);
}

/* Slot item */
.slot-item {
  display:flex; align-items:stretch; gap:12px;
  background:var(--bg-elevated); border:1px solid var(--line);
  border-radius:var(--r-lg); padding:12px 14px;
  margin-bottom:8px; transition:all var(--dur);
}
.slot-item:hover { border-color:var(--line-strong); }
.slot-item.completed { opacity:0.55; }

.slot-time-col {
  display:flex; flex-direction:column; align-items:center;
  gap:3px; min-width:46px;
}
.slot-time { font-family:'JetBrains Mono',monospace; font-size:0.72rem; color:var(--t3); white-space:nowrap; }
.slot-time-line { flex:1; width:1px; background:var(--line); border-radius:var(--r-full); }
.slot-body { flex:1; }

.slot-subj-chip {
  display:inline-flex; align-items:center; gap:4px;
  font-size:0.68rem; font-weight:600;
  padding:2px 7px; border-radius:var(--r-sm);
  margin-bottom:4px; letter-spacing:0.02em;
}
.slot-task {
  font-size:0.875rem; font-weight:500; color:var(--t1); line-height:1.4;
}
.slot-actions {
  display:flex; flex-direction:column; gap:6px;
  align-items:flex-end; justify-content:center;
}
.slot-check {
  width:22px; height:22px; border-radius:var(--r-full);
  border:1.5px solid var(--line); display:flex;
  align-items:center; justify-content:center;
  font-size:0.65rem; cursor:pointer;
  transition:all var(--dur); color:transparent;
}
.slot-check:hover { border-color:var(--green); color:var(--green); }
.slot-item.completed .slot-check { background:var(--green); border-color:var(--green); color:#fff; }
.slot-delete { color:var(--t3); font-size:0.75rem; cursor:pointer; transition:color var(--dur); padding:2px; }
.slot-delete:hover { color:var(--red); }

.add-slot-btn {
  width:100%; padding:9px; border-radius:var(--r-md);
  border:1px dashed var(--line); color:var(--t3);
  font-size:0.82rem; display:flex; align-items:center;
  justify-content:center; gap:8px; cursor:pointer;
  transition:all var(--dur); background:transparent; margin-top:4px;
}
.add-slot-btn:hover { border-color:var(--accent); color:var(--accent); background:var(--accent-glow); }

/* Pomodoro */
.pomo-card {
  background:var(--bg-elevated); border:1px solid var(--line);
  border-radius:var(--r-xl); padding:20px;
  display:flex; flex-direction:column; align-items:center; gap:14px;
}
.pomo-modes {
  display:flex; gap:4px; width:100%;
  background:var(--bg-overlay); border-radius:var(--r-md); padding:3px;
}
.pomo-mode-btn {
  flex:1; padding:5px 6px; border-radius:var(--r-sm);
  font-size:0.7rem; font-weight:600; text-align:center;
  cursor:pointer; border:none; background:transparent;
  color:var(--t3); transition:all var(--dur);
}
.pomo-mode-btn.active { background:var(--bg-elevated); color:var(--t1); box-shadow:var(--shadow-sm); }

.pomo-ring-wrap { position:relative; width:164px; height:164px; }
.pomo-ring-wrap svg { transform:rotate(-90deg); position:absolute; top:0; left:0; }
.pomo-center {
  position:absolute; inset:0;
  display:flex; flex-direction:column;
  align-items:center; justify-content:center; gap:2px;
}
.pomo-time-display {
  font-family:'JetBrains Mono',monospace;
  font-weight:500; font-size:2.4rem; color:var(--t1); line-height:1;
}
.pomo-mode-lbl { font-size:0.68rem; color:var(--t3); }

.pomo-controls { display:flex; gap:10px; align-items:center; }
.pomo-btn-sm {
  width:40px; height:40px; border-radius:var(--r-full);
  display:flex; align-items:center; justify-content:center;
  font-size:1rem; cursor:pointer;
  background:var(--bg-overlay); border:1px solid var(--line);
  color:var(--t2); transition:all var(--dur);
}
.pomo-btn-sm:hover { border-color:var(--line-strong); color:var(--t1); }
.pomo-btn-primary {
  width:52px; height:52px; font-size:1.3rem;
  background:var(--accent); border-color:var(--accent); color:#000;
  box-shadow: 0 0 20px rgba(234,179,8,0.3);
}
.pomo-btn-primary:hover { background:var(--accent-dark); transform:scale(1.05); }

.pomo-session-dots { display:flex; gap:5px; }
.pomo-dot {
  width:7px; height:7px; border-radius:50%;
  background:var(--line-strong); transition:background var(--dur);
}
.pomo-dot.done { background:var(--accent); }

/* Exam items */
.exam-item {
  display:flex; align-items:center; gap:10px;
  padding:9px 0; border-bottom:1px solid var(--line);
}
.exam-item:last-child { border-bottom:none; }
.exam-date-col { font-family:'JetBrains Mono',monospace; font-size:0.72rem; color:var(--t3); min-width:58px; }
.exam-subj { flex:1; font-size:0.84rem; font-weight:500; }
.exam-badge {
  font-size:0.68rem; font-weight:600;
  padding:2px 7px; border-radius:var(--r-full);
}
.exam-badge.soon { background:var(--red-d); color:var(--red); }
.exam-badge.medium { background:var(--orange-d); color:var(--orange); }
.exam-badge.far { background:var(--green-d); color:var(--green); }
.exam-badge.done { background:var(--bg-hover); color:var(--t3); }

/* =============================================
   SETTINGS
   ============================================= */
.settings-cols {
  display:grid; grid-template-columns:180px 1fr; gap:16px; align-items:start;
}
.settings-nav {
  background:var(--bg-elevated); border:1px solid var(--line);
  border-radius:var(--r-xl); padding:6px;
  display:flex; flex-direction:column; gap:2px;
  position:sticky; top:20px;
}
.settings-nav-item {
  padding:8px 10px; border-radius:var(--r-md);
  font-size:0.84rem; font-weight:500; color:var(--t2);
  cursor:pointer; transition:all var(--dur);
  display:flex; align-items:center; gap:7px;
}
.settings-nav-item:hover { background:var(--bg-hover); color:var(--t1); }
.settings-nav-item.active { background:var(--accent-dim); color:var(--t-accent); }

.settings-section { display:none; }
.settings-section.active { display:flex; flex-direction:column; gap:14px; }

.settings-group {
  background:var(--bg-elevated); border:1px solid var(--line);
  border-radius:var(--r-xl); overflow:hidden;
}
.settings-group-head {
  padding:14px 18px; border-bottom:1px solid var(--line);
  display:flex; align-items:center; justify-content:space-between;
  gap:10px;
}
.settings-group-head-title {
  font-size:0.84rem; font-weight:600; color:var(--t1);
  display:flex; align-items:center; gap:7px;
}
.settings-group-body { padding:18px; display:flex; flex-direction:column; gap:14px; }

.form-row { display:flex; flex-direction:column; gap:5px; }
.form-label { font-size:0.8rem; font-weight:500; color:var(--t2); }
.form-help { font-size:0.72rem; color:var(--t3); }

.form-inline {
  display:flex; align-items:center;
  justify-content:space-between; gap:12px;
  padding:12px 0; border-bottom:1px solid var(--line);
}
.form-inline:last-child { border-bottom:none; padding-bottom:0; }

/* Toggle */
.toggle { position:relative; width:40px; height:22px; flex-shrink:0; }
.toggle input { opacity:0; width:0; height:0; }
.toggle-track {
  position:absolute; cursor:pointer; inset:0;
  background:var(--bg-active); border-radius:var(--r-full);
  border:1px solid var(--line);
  transition:all var(--dur);
}
.toggle-track::before {
  content:''; position:absolute;
  width:14px; height:14px; left:3px; top:50%;
  transform:translateY(-50%);
  background:var(--t3); border-radius:50%;
  transition:all var(--dur) var(--ease);
}
.toggle input:checked + .toggle-track { background:var(--accent-dim); border-color:var(--accent); }
.toggle input:checked + .toggle-track::before { transform:translate(18px,-50%); background:var(--accent); }

/* Achievements */
.ach-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(160px,1fr));
  gap:10px;
}
.ach-card {
  background:var(--bg-elevated); border:1px solid var(--line);
  border-radius:var(--r-xl); padding:16px; text-align:center;
  transition:all var(--dur); position:relative;
}
.ach-card.earned {
  border-color:rgba(234,179,8,0.25);
  background:linear-gradient(160deg,rgba(234,179,8,0.04),var(--bg-elevated));
}
.ach-card:not(.earned) { filter:grayscale(0.7); opacity:0.45; }
.ach-icon { font-size:1.8rem; margin-bottom:7px; }
.ach-title { font-weight:700; font-size:0.82rem; margin-bottom:3px; }
.ach-desc { font-size:0.7rem; color:var(--t3); line-height:1.4; }
.ach-earned-badge {
  position:absolute; top:-5px; right:-5px;
  background:var(--accent); color:#000;
  font-size:0.6rem; font-weight:700;
  padding:2px 5px; border-radius:var(--r-full);
}

/* Syllabus editor */
.editor-subject {
  background:var(--bg-overlay); border:1px solid var(--line);
  border-radius:var(--r-lg); overflow:hidden;
  margin-bottom:8px;
}
.editor-subject-head {
  display:flex; align-items:center; gap:8px;
  padding:10px 14px; cursor:pointer;
}
.editor-subject-head:hover { background:var(--bg-hover); }
.editor-subject-dot { width:8px; height:8px; border-radius:50%; flex-shrink:0; }
.editor-subject-name { flex:1; font-weight:600; font-size:0.875rem; }
.editor-subject-actions { display:flex; gap:6px; }
.editor-chapters { display:none; padding:8px 14px 12px; border-top:1px solid var(--line); }
.editor-subject.open .editor-chapters { display:block; }
.editor-chapter-row {
  display:flex; align-items:center; gap:8px;
  padding:6px 0; border-bottom:1px solid var(--line);
}
.editor-chapter-row:last-child { border-bottom:none; }
.editor-ch-name { flex:1; font-size:0.84rem; color:var(--t2); }

/* Color picker */
.color-swatches { display:flex; gap:6px; flex-wrap:wrap; }
.color-swatch {
  width:24px; height:24px; border-radius:50%;
  cursor:pointer; border:2px solid transparent;
  transition:all var(--dur) var(--ease);
}
.color-swatch:hover, .color-swatch.selected {
  border-color:var(--t1); transform:scale(1.15);
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display:inline-flex; align-items:center; gap:7px;
  padding:8px 14px; border-radius:var(--r-md);
  font-size:0.84rem; font-weight:600;
  cursor:pointer; transition:all var(--dur) var(--ease);
  border:1px solid transparent; white-space:nowrap;
  font-family:inherit;
}
.btn-primary {
  background:var(--accent); color:#000;
  box-shadow: 0 0 16px rgba(234,179,8,0.25);
}
.btn-primary:hover { background:var(--accent-dark); transform:translateY(-1px); }
.btn-secondary {
  background:var(--bg-overlay); color:var(--t1); border-color:var(--line);
}
.btn-secondary:hover { background:var(--bg-hover); border-color:var(--line-strong); }
.btn-ghost {
  background:transparent; color:var(--t2); border-color:var(--line);
}
.btn-ghost:hover { background:var(--bg-hover); color:var(--t1); }
.btn-danger {
  background:var(--red-d); color:var(--red); border-color:rgba(239,68,68,0.25);
}
.btn-danger:hover { background:rgba(239,68,68,0.18); }
.btn-sm { padding:5px 10px; font-size:0.78rem; }

/* =============================================
   MODALS
   ============================================= */
.modal-overlay {
  position:fixed; inset:0;
  background:rgba(0,0,0,0.65);
  backdrop-filter:blur(6px);
  z-index:1000; display:flex;
  align-items:center; justify-content:center;
  opacity:0; pointer-events:none;
  transition:opacity var(--dur-slow);
}
.modal-overlay.open { opacity:1; pointer-events:auto; }

.modal {
  background:var(--bg-elevated);
  border:1px solid var(--line-strong);
  border-radius:var(--r-xl);
  padding:24px;
  width:460px; max-width:calc(100vw - 40px);
  max-height:calc(100vh - 80px); overflow-y:auto;
  transform:scale(0.94) translateY(16px);
  transition:transform var(--dur-slow) var(--ease);
  box-shadow:var(--shadow-lg);
}
.modal-overlay.open .modal { transform:scale(1) translateY(0); }

.modal-header {
  display:flex; align-items:center;
  justify-content:space-between; margin-bottom:18px;
}
.modal-title { font-weight:700; font-size:1.05rem; letter-spacing:-0.02em; }
.modal-close {
  width:28px; height:28px; border-radius:var(--r-md);
  display:flex; align-items:center; justify-content:center;
  color:var(--t3); cursor:pointer; font-size:0.85rem;
  background:var(--bg-overlay); border:1px solid var(--line);
  transition:all var(--dur);
}
.modal-close:hover { color:var(--t1); background:var(--bg-hover); }

/* =============================================
   EMPTY STATES
   ============================================= */
.empty {
  text-align:center; padding:40px 24px; color:var(--t3);
}
.empty-icon { font-size:2.2rem; margin-bottom:10px; opacity:0.5; }
.empty-title { font-weight:600; font-size:0.9rem; color:var(--t2); margin-bottom:5px; }
.empty-desc { font-size:0.8rem; }

/* =============================================
   ACHIEVEMENT TOAST
   ============================================= */
.achievement-toast {
  position:fixed; bottom:20px; right:20px;
  background:var(--bg-elevated);
  border:1px solid rgba(234,179,8,0.3);
  border-radius:var(--r-xl);
  padding:14px 16px;
  display:flex; align-items:center; gap:12px;
  box-shadow:var(--shadow-lg);
  z-index:9999; min-width:240px; max-width:320px;
  transform:translateX(calc(100% + 30px));
  transition:transform var(--dur-slow) var(--ease);
}
.achievement-toast.show { transform:translateX(0); }
.achievement-toast-icon { font-size:1.8rem; flex-shrink:0; }
.achievement-toast-title { font-size:0.62rem; text-transform:uppercase; letter-spacing:0.08em; color:var(--accent); font-weight:600; }
.achievement-toast-name { font-weight:700; font-size:0.88rem; margin-top:1px; }
.achievement-toast-desc { font-size:0.72rem; color:var(--t3); margin-top:2px; }

/* =============================================
   UTILITIES
   ============================================= */
.gap-10 { gap:10px; }
.gap-14 { gap:14px; }
.mt-10 { margin-top:10px; }
.mt-14 { margin-top:14px; }
.mt-18 { margin-top:18px; }
.mb-10 { margin-bottom:10px; }
.mb-14 { margin-bottom:14px; }
.mb-18 { margin-bottom:18px; }
.w-full { width:100%; }
.hidden { display:none !important; }
.flex { display:flex; }
.flex-col { flex-direction:column; }
.items-center { align-items:center; }
.justify-between { justify-content:justify-between; }
.text-muted { color:var(--t3); }
.text-secondary { color:var(--t2); }
.text-accent { color:var(--t-accent); }
.text-success { color:var(--green); }
.text-warning { color:var(--orange); }
.text-danger { color:var(--red); }
.font-mono { font-family:'JetBrains Mono',monospace; }
.sep { height:1px; background:var(--line); }

.number-row { display:flex; align-items:center; gap:6px; }
.number-row input[type="number"] { width:70px; text-align:center; }

/* =============================================
   MOBILE NAV
   ============================================= */
.mobile-nav {
  display:none; position:fixed; bottom:0; left:0; right:0;
  background:var(--bg-elevated); border-top:1px solid var(--line);
  padding:8px 0 env(safe-area-inset-bottom,0); z-index:300;
}
.mobile-nav-items { display:flex; justify-content:space-around; }
.mobile-nav-item {
  display:flex; flex-direction:column; align-items:center;
  gap:2px; padding:5px 12px; cursor:pointer;
  color:var(--t3); font-size:0.62rem; font-weight:500;
  transition:color var(--dur); border-radius:var(--r-md);
}
.mobile-nav-item.active { color:var(--accent); }
.mobile-nav-item-icon { font-size:1.2rem; }

/* Sidebar overlay */
.sidebar-overlay {
  display:none; position:fixed; inset:0;
  background:rgba(0,0,0,0.55); z-index:199;
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width:960px) {
  :root { --sidebar-w: 0px; }
  .sidebar { transform:translateX(-100%); width:220px; }
  .sidebar.open { transform:translateX(0); }
  .sidebar-overlay.open { display:block; }
  .main { margin-left:0; padding-bottom:70px; }
  .mobile-nav { display:block; }
  .mobile-menu-trigger { display:flex; }
  .planner-cols { grid-template-columns:1fr; }
  .subject-rings { grid-template-columns:repeat(3,1fr); }
  .progress-layout { grid-template-columns:1fr; }
  .progress-layout .full-width { grid-column:auto; }
  .dash-hero { grid-template-columns:1fr 1fr; }
  .countdown-block { grid-column:1/-1; min-height:120px; }
  .settings-cols { grid-template-columns:1fr; }
  .settings-nav { position:static; flex-direction:row; overflow-x:auto; }
  .page-body { padding:16px; }
}

@media (max-width:540px) {
  .subject-rings { grid-template-columns:repeat(2,1fr); }
  .dash-hero { grid-template-columns:1fr 1fr; }
  .ach-grid { grid-template-columns:repeat(2,1fr); }
  .breakdown-strip { flex-wrap:wrap; }
  .breakdown-chip { min-width:70px; }
  .chapter-progress-pill { display:none; }
}