/* ============================================================
   NEURO STUDY PLANNER — Premium Dashboard Styles
   Design: Refined dark-navy academic meets modern SaaS
   ============================================================ */

/* ── 1. CSS VARIABLES & RESET ── */
:root {
  /* Light mode palette */
  --bg:           #F4F7FC;
  --bg2:          #ECF0F8;
  --surface:      #FFFFFF;
  --surface2:     #F8FAFD;
  --border:       #E2E8F2;
  --border2:      #D0D9EA;
  --text:         #0F1D2E;
  --text2:        #3A4A5C;
  --muted:        #7A8A99;
  --accent:       #2C4C7C;
  --accent2:      #1E6FA8;
  --accent-glow:  rgba(44,76,124,0.15);
  --green:        #16A34A;
  --green-bg:     #F0FDF4;
  --green-border: #BBF7D0;
  --red:          #DC2626;
  --red-bg:       #FEF2F2;
  --amber:        #D97706;
  --amber-bg:     #FFFBEB;
  --hero-bg:      linear-gradient(135deg, #0A1628 0%, #0F1F3D 35%, #1A2F5A 65%, #2C4C7C 100%);
  --shadow-sm:    0 1px 3px rgba(15,29,46,0.06), 0 1px 2px rgba(15,29,46,0.04);
  --shadow-md:    0 4px 16px rgba(15,29,46,0.08), 0 2px 6px rgba(15,29,46,0.05);
  --shadow-lg:    0 12px 40px rgba(15,29,46,0.12), 0 4px 12px rgba(15,29,46,0.07);
  --radius:       14px;
  --radius-sm:    8px;
  --transition:   0.18s ease;
  --font-body:    'DM Sans', sans-serif;
  --font-display: 'Playfair Display', serif;
  --font-mono:    'DM Mono', monospace;
}

[data-theme="dark"] {
  --bg:           #0A0F1A;
  --bg2:          #111827;
  --surface:      #151E2E;
  --surface2:     #1C2639;
  --border:       #243044;
  --border2:      #2D3D54;
  --text:         #E8F0F8;
  --text2:        #A8BAD0;
  --muted:        #5A7090;
  --accent:       #4A8CC8;
  --accent2:      #60A8E8;
  --accent-glow:  rgba(74,140,200,0.18);
  --green:        #22C55E;
  --green-bg:     rgba(22,163,74,0.12);
  --green-border: rgba(34,197,94,0.3);
  --red:          #F87171;
  --red-bg:       rgba(220,38,38,0.12);
  --amber:        #FBBF24;
  --amber-bg:     rgba(217,119,6,0.12);
  --hero-bg:      linear-gradient(135deg, #050810 0%, #0A1020 35%, #0F1A30 65%, #1A2A48 100%);
  --shadow-sm:    0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --shadow-md:    0 4px 16px rgba(0,0,0,0.35), 0 2px 6px rgba(0,0,0,0.2);
  --shadow-lg:    0 12px 40px rgba(0,0,0,0.45), 0 4px 12px rgba(0,0,0,0.25);
}

*, *::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);
  color: var(--text);
  transition: background var(--transition), color var(--transition);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── 2. HERO ── */
.hero {
  background: var(--hero-bg);
  color: white;
  padding: 52px 40px 44px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 15% 60%, rgba(44,76,124,0.45) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 25%, rgba(26,110,168,0.35) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(10,16,32,0.6) 0%, transparent 60%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}
.hero-content { position: relative; z-index: 1; }
.hero-icon { font-size: 48px; margin-bottom: 12px; display: block; filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3)); }
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.hero-subtitle { font-size: 1rem; opacity: 0.7; letter-spacing: 0.05em; margin-bottom: 32px; }

.hero-stats { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.stat-pill {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 50px;
  padding: 10px 24px;
  backdrop-filter: blur(10px);
  transition: background var(--transition), transform var(--transition);
}
.stat-pill:hover { background: rgba(255,255,255,0.16); transform: translateY(-1px); }
.stat-pill .n {
  font-family: var(--font-display);
  font-size: 1.8rem; font-weight: 900; display: block; line-height: 1.1;
}
.stat-pill .l { font-size: 0.72rem; opacity: 0.65; letter-spacing: 0.08em; text-transform: uppercase; }

/* Exam countdown in hero */
.hero-countdown {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50px; padding: 8px 20px;
  margin-top: 20px; cursor: pointer;
  transition: background var(--transition);
  font-size: 0.88rem;
}
.hero-countdown:hover { background: rgba(255,255,255,0.14); }
.hero-countdown .cd-num {
  font-family: var(--font-display); font-size: 1.5rem; font-weight: 900;
  color: #FCD34D;
}

/* ── 3. GLOBAL PROGRESS BAR (top of page) ── */
#global-progress-bar-track {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 9999;
  background: rgba(0,0,0,0.1);
}
#global-progress-bar-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, #27AE60, #2ECC71, #1ABC9C);
  transition: width 0.6s cubic-bezier(0.34,1.56,0.64,1);
  box-shadow: 0 0 8px rgba(39,174,96,0.6);
}

/* ── 4. DASHBOARD STATS CARDS ── */
#dashboard {
  max-width: 1200px; margin: 0 auto; padding: 24px 24px 0;
}
.dash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 4px;
}
.dash-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: default;
}
.dash-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.dash-card-icon { font-size: 1.4rem; margin-bottom: 10px; display: block; }
.dash-card-value {
  font-family: var(--font-display); font-size: 2rem; font-weight: 900;
  color: var(--text); line-height: 1; margin-bottom: 4px;
}
.dash-card-label { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); }
.dash-card-sub { font-size: 0.75rem; color: var(--muted); margin-top: 6px; }

.dash-card.green { border-color: var(--green-border); background: var(--green-bg); }
.dash-card.green .dash-card-value { color: var(--green); }
.dash-card.amber { border-color: rgba(217,119,6,0.3); background: var(--amber-bg); }
.dash-card.amber .dash-card-value { color: var(--amber); }

/* Overall progress section */
.progress-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-top: 14px;
  box-shadow: var(--shadow-sm);
}
.progress-section-title {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 14px;
}
.progress-bar-row { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; }
.progress-bar-label { font-size: 0.82rem; font-weight: 600; color: var(--text2); min-width: 120px; }
.progress-bar-track {
  flex: 1; height: 8px; background: var(--bg2);
  border-radius: 99px; overflow: hidden;
}
.progress-bar-fill {
  height: 100%; border-radius: 99px;
  transition: width 0.7s cubic-bezier(0.34,1.56,0.64,1);
}
.progress-bar-pct { font-size: 0.82rem; font-weight: 700; min-width: 38px; text-align: right; color: var(--text); }

.pct-tasks .progress-bar-fill { background: linear-gradient(90deg, var(--accent), var(--accent2)); }
.pct-days  .progress-bar-fill { background: linear-gradient(90deg, #7C3AED, #9D65F0); }
.pct-score .progress-bar-fill { background: linear-gradient(90deg, var(--green), #4ADE80); }

/* ── 5. TOOLBAR ── */
#toolbar {
  max-width: 1200px; margin: 16px auto 0; padding: 0 24px;
}
.toolbar-inner {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
  box-shadow: var(--shadow-sm);
}

.search-wrap { position: relative; flex: 1; min-width: 180px; }
.search-wrap svg { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); opacity: 0.4; pointer-events: none; }
#search-input {
  width: 100%; padding: 8px 12px 8px 34px;
  border: 1px solid var(--border2); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--text);
  font-family: var(--font-body); font-size: 0.85rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
#search-input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
#search-input::placeholder { color: var(--muted); }

.filter-group { display: flex; gap: 6px; flex-wrap: wrap; }
.filter-btn {
  padding: 6px 14px; border-radius: 99px;
  border: 1px solid var(--border2);
  background: var(--bg); color: var(--text2);
  font-family: var(--font-body); font-size: 0.78rem; font-weight: 500;
  cursor: pointer; transition: all var(--transition); white-space: nowrap;
}
.filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.filter-btn.active {
  background: var(--accent); border-color: var(--accent); color: white;
}
.filter-btn.active.green { background: var(--green); border-color: var(--green); }
.filter-btn.active.red   { background: var(--red);   border-color: var(--red); }
.filter-btn.active.amber { background: var(--amber); border-color: var(--amber); }

.toolbar-actions { display: flex; gap: 8px; margin-left: auto; }
.icon-btn {
  width: 34px; height: 34px;
  border: 1px solid var(--border2); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--text2);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--transition); font-size: 1rem;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--surface); }
.icon-btn.active { background: var(--accent); border-color: var(--accent); color: white; }

/* ── 6. STICKY NAV ── */
#sticky-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(16px) saturate(1.8);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex; gap: 2px;
  overflow-x: auto; scrollbar-width: none;
  transition: background var(--transition);
}
[data-theme="dark"] #sticky-nav { background: rgba(10,15,26,0.94); }
#sticky-nav::-webkit-scrollbar { display: none; }

.nav-tab {
  padding: 13px 16px; border: none; background: none;
  cursor: pointer; font-family: var(--font-body);
  font-size: 0.8rem; font-weight: 500; color: var(--muted);
  white-space: nowrap; border-bottom: 3px solid transparent;
  transition: all var(--transition); position: relative;
}
.nav-tab:hover { color: var(--accent); }
.nav-tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 700; }
.nav-tab .day-check-indicator {
  display: inline-block; width: 7px; height: 7px;
  border-radius: 50%; background: var(--green);
  margin-left: 5px; vertical-align: middle;
  opacity: 0; transition: opacity var(--transition);
}
.nav-tab.day-done .day-check-indicator { opacity: 1; }

/* ── 7. LEGEND ── */
.legend-wrap { max-width: 1200px; margin: 16px auto 0; padding: 0 24px; }
.legend-inner {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 20px;
  display: flex; flex-wrap: wrap; gap: 7px; align-items: center;
  box-shadow: var(--shadow-sm);
}
.legend-title { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; color: var(--muted); margin-right: 6px; }
.legend-badge { display: inline-block; padding: 3px 10px; border-radius: 99px; font-size: 0.72rem; font-weight: 600; color: white; letter-spacing: 0.02em; }

/* ── 8. DAY SECTIONS ── */
.day-section { max-width: 1200px; margin: 24px auto 0; padding: 0 24px; }
.day-section.collapsed .day-body { display: none; }

.day-header {
  border-radius: 14px 14px 0 0; padding: 20px 24px;
  display: flex; justify-content: space-between; align-items: center;
  color: white; cursor: pointer; user-select: none;
  transition: filter var(--transition);
}
.day-header:hover { filter: brightness(1.06); }
.day-header-left { display: flex; align-items: center; gap: 14px; flex: 1; min-width: 0; }
.day-num-badge {
  background: rgba(255,255,255,0.22); border: 1px solid rgba(255,255,255,0.35);
  border-radius: 7px; padding: 5px 12px;
  font-size: 0.72rem; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase;
  white-space: nowrap;
}
.day-emoji { font-size: 24px; flex-shrink: 0; }
.day-title { font-family: var(--font-display); font-size: 1.2rem; font-weight: 700; line-height: 1.25; }
.day-sub { font-size: 0.76rem; opacity: 0.78; margin-top: 2px; }

.day-header-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.day-stat-box {
  background: rgba(255,255,255,0.18); border: 1px solid rgba(255,255,255,0.28);
  border-radius: 10px; padding: 8px 16px; text-align: center;
}
.stat-num { font-family: var(--font-display); font-size: 1.6rem; font-weight: 900; display: block; line-height: 1; }
.stat-lbl { font-size: 0.65rem; opacity: 0.75; letter-spacing: 0.08em; text-transform: uppercase; }

.day-collapse-icon {
  font-size: 1.1rem; opacity: 0.7; transition: transform var(--transition);
}
.day-section.collapsed .day-collapse-icon { transform: rotate(-90deg); }

/* Day progress bar (inside header) */
.day-progress-bar {
  height: 4px; background: rgba(255,255,255,0.2);
  border-radius: 0; margin: 0; overflow: hidden;
}
.day-progress-fill {
  height: 100%; background: rgba(255,255,255,0.7);
  border-radius: 0; transition: width 0.5s ease;
}

/* Mark all button (inside header area) */
.mark-all-btn {
  background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3);
  color: white; border-radius: 99px; padding: 5px 14px;
  font-family: var(--font-body); font-size: 0.75rem; font-weight: 600;
  cursor: pointer; transition: background var(--transition); white-space: nowrap;
}
.mark-all-btn:hover { background: rgba(255,255,255,0.28); }

/* ── 9. TABLE ── */
.day-body { display: block; }
.table-wrap {
  background: var(--surface); border: 1px solid var(--border);
  border-top: none; overflow-x: auto;
}
.schedule-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; min-width: 700px; }
.schedule-table thead th {
  background: var(--surface2); font-weight: 700;
  font-size: 0.7rem; letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--muted); padding: 10px 12px; text-align: left;
  border-bottom: 2px solid var(--border); position: sticky; top: 46px; z-index: 5;
}
.schedule-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), opacity var(--transition);
}
.schedule-table tbody tr:hover { background: var(--surface2); }
.schedule-table td { padding: 9px 12px; vertical-align: middle; }

/* Completed row styling */
.schedule-table tbody tr.row-done {
  background: var(--green-bg) !important;
  opacity: 0.75;
}
.schedule-table tbody tr.row-done .topic-name { text-decoration: line-through; color: var(--muted); }
[data-theme="dark"] .schedule-table tbody tr.row-done { background: rgba(22,163,74,0.1) !important; }

/* Hidden rows (filter) */
.schedule-table tbody tr.row-hidden { display: none; }

/* Checkbox cell */
.cb-cell { width: 36px; padding: 9px 8px 9px 12px !important; }
.topic-checkbox {
  width: 18px; height: 18px; cursor: pointer;
  accent-color: var(--accent); border-radius: 4px;
  flex-shrink: 0;
}

/* Topic name cell */
.topic-name { font-weight: 600; color: var(--text); transition: color var(--transition), text-decoration var(--transition); }
.subsys-cell { font-size: 0.72rem; color: var(--muted); }
.badges-cell { min-width: 130px; }
.badge {
  display: inline-block; color: white; border-radius: 4px;
  padding: 2px 7px; font-size: 0.68rem; font-weight: 700;
  margin: 2px 2px 2px 0; letter-spacing: 0.02em;
}
.qid-count-badge {
  display: inline-block; background: var(--accent); color: white;
  border-radius: 4px; padding: 2px 6px; font-size: 0.68rem; font-weight: 800;
  font-family: var(--font-mono); margin-right: 5px;
}
.qid-list { font-family: var(--font-mono); font-size: 0.74rem; color: var(--muted); }

/* Percentile input */
.percentile-input {
  width: 68px; padding: 5px 8px; border: 1px solid var(--border2);
  border-radius: 6px; font-size: 0.82rem; font-family: var(--font-mono);
  text-align: center; background: var(--bg); color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.percentile-input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow); background: var(--surface);
}
.percentile-input.score-weak { border-color: var(--red); background: var(--red-bg); color: var(--red); }
.percentile-input.score-strong { border-color: var(--green); background: var(--green-bg); color: var(--green); }

/* Difficulty tag cell */
.diff-cell { width: 90px; }
.diff-tag {
  display: inline-block; padding: 3px 10px; border-radius: 99px;
  font-size: 0.7rem; font-weight: 700; cursor: pointer;
  border: 1.5px solid transparent; transition: all var(--transition);
  white-space: nowrap;
}
.diff-tag.easy   { background: #DCFCE7; color: #15803D; border-color: #BBF7D0; }
.diff-tag.medium { background: #FEF9C3; color: #A16207; border-color: #FDE68A; }
.diff-tag.hard   { background: #FEE2E2; color: #B91C1C; border-color: #FECACA; }
.diff-tag.unset  { background: var(--bg2); color: var(--muted); border-color: var(--border); }
[data-theme="dark"] .diff-tag.easy   { background: rgba(21,128,61,0.2);  color: #4ADE80; border-color: rgba(74,222,128,0.3); }
[data-theme="dark"] .diff-tag.medium { background: rgba(161,98,7,0.2);   color: #FCD34D; border-color: rgba(252,211,77,0.3); }
[data-theme="dark"] .diff-tag.hard   { background: rgba(185,28,28,0.2);  color: #F87171; border-color: rgba(248,113,113,0.3); }
[data-theme="dark"] .diff-tag.unset  { background: var(--bg2); color: var(--muted); border-color: var(--border); }

/* Notes cell */
.notes-cell { min-width: 120px; }
.notes-toggle {
  background: none; border: 1px dashed var(--border2); border-radius: 6px;
  padding: 4px 10px; font-size: 0.73rem; color: var(--muted);
  cursor: pointer; transition: all var(--transition); font-family: var(--font-body);
  white-space: nowrap;
}
.notes-toggle:hover { border-color: var(--accent); color: var(--accent); }
.notes-toggle.has-note { border-style: solid; border-color: var(--accent2); color: var(--accent2); background: var(--accent-glow); }

/* Notes expandable area */
.notes-row td {
  padding: 0 12px 12px 36px !important;
  background: var(--surface2) !important;
  border-bottom: 2px solid var(--border) !important;
}
.notes-area {
  width: 100%; min-height: 70px; padding: 10px 12px;
  border: 1px solid var(--border2); border-radius: 8px;
  background: var(--surface); color: var(--text);
  font-family: var(--font-body); font-size: 0.83rem; line-height: 1.5;
  resize: vertical; transition: border-color var(--transition);
}
.notes-area:focus { outline: none; border-color: var(--accent); }
.notes-area::placeholder { color: var(--muted); }

/* ── 10. MASTER ROW (QID chips + copy) ── */
.master-row {
  background: linear-gradient(135deg, var(--green-bg) 0%, rgba(240,255,248,0.7) 100%);
  border: 1px solid var(--border); border-top: none;
  border-bottom: 3px solid rgba(39,174,96,0.4);
  border-radius: 0 0 14px 14px; padding: 14px 18px; position: relative;
}
[data-theme="dark"] .master-row { background: linear-gradient(135deg, rgba(21,128,61,0.1) 0%, rgba(16,90,50,0.08) 100%); }
.master-row::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, #27AE60, #2ECC71);
}
.master-label { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.master-text { font-weight: 700; font-size: 0.88rem; color: var(--green); }
.master-count { background: var(--green); color: white; border-radius: 99px; padding: 2px 12px; font-size: 0.74rem; font-weight: 700; }
.chips-row { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 10px; }
.qid-chip {
  font-family: var(--font-mono); font-size: 0.72rem;
  background: white; color: var(--accent); border: 1px solid rgba(44,76,124,0.25);
  border-radius: 5px; padding: 2px 7px; display: inline-block;
  transition: transform 0.1s, box-shadow 0.1s;
}
[data-theme="dark"] .qid-chip { background: var(--surface2); border-color: var(--border2); }
.qid-chip:hover { transform: translateY(-1px); box-shadow: 0 2px 6px var(--accent-glow); }
.master-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.copy-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--green); color: white; border: none; border-radius: 8px;
  padding: 7px 16px; font-family: var(--font-body); font-size: 0.8rem; font-weight: 700;
  cursor: pointer; transition: background var(--transition), transform var(--transition);
}
.copy-btn:hover { background: #15803D; transform: translateY(-1px); }
.copy-btn.copied { background: #0891B2; }

/* Day notes textarea */
.day-notes-wrap {
  background: var(--surface2); border: 1px solid var(--border); border-top: none;
  padding: 14px 18px;
}
.day-notes-label { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.day-notes-area {
  width: 100%; min-height: 60px; padding: 10px 12px;
  border: 1px solid var(--border2); border-radius: 8px;
  background: var(--surface); color: var(--text);
  font-family: var(--font-body); font-size: 0.83rem; line-height: 1.5; resize: vertical;
}
.day-notes-area:focus { outline: none; border-color: var(--accent); }
.day-notes-area::placeholder { color: var(--muted); }

/* ── 11. DAILY STATS BAR ── */
.day-daily-stats {
  display: flex; align-items: center; gap: 14px;
  padding: 10px 18px;
  background: var(--surface2); border: 1px solid var(--border); border-top: none;
  font-size: 0.8rem; color: var(--text2); flex-wrap: wrap;
}
.day-avg-score { font-weight: 700; }
.day-avg-score.weak  { color: var(--red); }
.day-avg-score.strong{ color: var(--green); }

/* ── 12. POMODORO PANEL ── */
#pomo-panel {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 20px; padding: 20px 24px; min-width: 240px;
  box-shadow: var(--shadow-lg); z-index: 500;
  transform: translateY(calc(100% + 32px)); transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
#pomo-panel.open { transform: translateY(0); }

.pomo-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.pomo-title { font-weight: 800; font-size: 0.82rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.pomo-close { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 1.1rem; padding: 2px 6px; border-radius: 6px; transition: color var(--transition); }
.pomo-close:hover { color: var(--text); }

.pomo-mode-tabs { display: flex; background: var(--bg2); border-radius: 10px; padding: 3px; gap: 2px; margin-bottom: 16px; }
.pomo-mode-btn {
  flex: 1; padding: 6px; border: none; border-radius: 8px; background: none;
  font-family: var(--font-body); font-size: 0.75rem; font-weight: 600; color: var(--muted);
  cursor: pointer; transition: all var(--transition); text-align: center;
}
.pomo-mode-btn.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow-sm); }

.pomo-time-display {
  font-family: var(--font-display); font-size: 3.2rem; font-weight: 900;
  text-align: center; color: var(--text); line-height: 1; margin-bottom: 4px;
  letter-spacing: -0.02em;
}
.pomo-phase-label {
  text-align: center; font-size: 0.75rem; color: var(--muted);
  margin-bottom: 16px; font-weight: 500;
}
.pomo-progress-ring {
  display: block; margin: 0 auto 16px;
}
.pomo-ring-bg { fill: none; stroke: var(--bg2); stroke-width: 4; }
.pomo-ring-fill {
  fill: none; stroke: var(--accent); stroke-width: 4;
  stroke-linecap: round; stroke-dasharray: 251.2;
  stroke-dashoffset: 251.2;
  transition: stroke-dashoffset 1s linear;
  transform-origin: 50% 50%; transform: rotate(-90deg);
}
.pomo-ring-fill.break { stroke: var(--green); }

.pomo-controls { display: flex; gap: 8px; justify-content: center; margin-bottom: 14px; }
.pomo-btn {
  padding: 9px 18px; border-radius: 99px; border: 1px solid var(--border2);
  background: var(--bg); color: var(--text); font-family: var(--font-body);
  font-size: 0.82rem; font-weight: 700; cursor: pointer; transition: all var(--transition);
}
.pomo-btn.primary { background: var(--accent); border-color: var(--accent); color: white; }
.pomo-btn.primary:hover { filter: brightness(1.1); }
.pomo-btn:hover { border-color: var(--accent); }

.pomo-session-count { text-align: center; font-size: 0.75rem; color: var(--muted); margin-bottom: 12px; }
.pomo-session-dots { display: flex; gap: 5px; justify-content: center; margin-top: 4px; }
.pomo-session-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--border2); transition: background var(--transition);
}
.pomo-session-dot.done { background: var(--accent); }

.pomo-settings { border-top: 1px solid var(--border); padding-top: 12px; display: flex; gap: 10px; }
.pomo-setting { flex: 1; }
.pomo-setting label { font-size: 0.7rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 4px; }
.pomo-setting input {
  width: 100%; padding: 5px 8px; border: 1px solid var(--border2);
  border-radius: 6px; background: var(--bg); color: var(--text);
  font-family: var(--font-mono); font-size: 0.82rem; text-align: center;
}

/* Pomodoro FAB */
#pomo-fab {
  position: fixed; bottom: 24px; right: 24px;
  width: 54px; height: 54px; border-radius: 50%;
  background: var(--accent); color: white; border: none;
  font-size: 1.4rem; cursor: pointer; z-index: 499;
  box-shadow: 0 4px 20px rgba(44,76,124,0.5);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex; align-items: center; justify-content: center;
}
#pomo-fab:hover { transform: scale(1.08); box-shadow: 0 6px 28px rgba(44,76,124,0.65); }
#pomo-fab .pomo-fab-timer {
  font-family: var(--font-mono); font-size: 0.7rem; font-weight: 700;
  line-height: 1; display: none;
}
#pomo-fab.running { background: #DC2626; }
#pomo-fab.running .pomo-fab-icon { display: none; }
#pomo-fab.running .pomo-fab-timer { display: block; }

/* ── 13. MODALS ── */
.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;
  padding: 20px; opacity: 0; pointer-events: none;
  transition: opacity 0.2s;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal-box {
  background: var(--surface); border-radius: 20px;
  padding: 28px 32px; max-width: 520px; width: 100%;
  box-shadow: var(--shadow-lg); border: 1px solid var(--border);
  transform: scale(0.95); transition: transform 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
.modal-overlay.open .modal-box { transform: scale(1); }
.modal-title { font-family: var(--font-display); font-size: 1.5rem; font-weight: 900; margin-bottom: 8px; }
.modal-sub { font-size: 0.87rem; color: var(--muted); margin-bottom: 20px; }
.modal-input {
  width: 100%; padding: 10px 14px; border: 1px solid var(--border2);
  border-radius: 10px; background: var(--bg); color: var(--text);
  font-family: var(--font-body); font-size: 0.95rem; margin-bottom: 16px;
}
.modal-input:focus { outline: none; border-color: var(--accent); }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }
.modal-btn {
  padding: 10px 22px; border-radius: 10px; font-family: var(--font-body);
  font-size: 0.88rem; font-weight: 700; cursor: pointer; transition: all var(--transition);
}
.modal-btn.secondary { background: none; border: 1px solid var(--border2); color: var(--text2); }
.modal-btn.secondary:hover { border-color: var(--accent); color: var(--accent); }
.modal-btn.primary { background: var(--accent); border: 1px solid var(--accent); color: white; }
.modal-btn.primary:hover { filter: brightness(1.12); }
.modal-btn.danger { background: var(--red); border: 1px solid var(--red); color: white; }

/* ── 14. REVISION PANEL ── */
#revision-panel {
  max-width: 1200px; margin: 0 auto 8px; padding: 0 24px;
  display: none;
}
#revision-panel.open { display: block; }
.revision-box {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  box-shadow: var(--shadow-sm);
}
.revision-title { font-family: var(--font-display); font-size: 1.2rem; font-weight: 800; margin-bottom: 4px; }
.revision-sub { font-size: 0.82rem; color: var(--muted); margin-bottom: 18px; }
.revision-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.revision-col-title { font-size: 0.72rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.revision-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px; border-radius: 8px; background: var(--surface2);
  border: 1px solid var(--border); margin-bottom: 6px;
  font-size: 0.82rem; cursor: pointer; transition: background var(--transition);
}
.revision-item:hover { background: var(--bg2); }
.revision-item-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

/* ── 15. TOAST NOTIFICATION ── */
#toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%) translateY(-80px);
  background: var(--text); color: var(--bg); padding: 10px 22px; border-radius: 99px;
  font-size: 0.85rem; font-weight: 600; z-index: 9999; pointer-events: none;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
  white-space: nowrap; box-shadow: var(--shadow-lg);
}
#toast.show { transform: translateX(-50%) translateY(0); }

/* ── 16. CELEBRATION ── */
@keyframes confetti-fall {
  from { transform: translateY(-20px) rotate(0deg); opacity: 1; }
  to   { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}
.confetti-piece {
  position: fixed; pointer-events: none; z-index: 9998; border-radius: 2px;
  animation: confetti-fall 2.5s ease-in forwards;
}

/* ── 17. FOOTER ── */
.footer {
  text-align: center; padding: 36px 24px; color: var(--muted);
  font-size: 0.78rem; margin-top: 40px; border-top: 1px solid var(--border);
}
.footer-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 12px; }
.footer-btn {
  padding: 7px 16px; border-radius: 99px; border: 1px solid var(--border2);
  background: var(--surface); color: var(--text2);
  font-family: var(--font-body); font-size: 0.78rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition);
}
.footer-btn:hover { border-color: var(--accent); color: var(--accent); }
.footer-btn.danger:hover { border-color: var(--red); color: var(--red); }

/* ── 18. EXAM COUNTDOWN EDITOR ── */
.countdown-display { margin-top: 16px; }
.cd-days-big {
  font-family: var(--font-display); font-size: 5rem; font-weight: 900;
  color: #FCD34D; line-height: 1; display: block; text-align: center;
}
.cd-label { text-align: center; font-size: 0.88rem; opacity: 0.7; letter-spacing: 0.08em; }

/* ── 19. SCROLL TO TOP ── */
#scroll-top {
  position: fixed; bottom: 90px; right: 24px;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text2); display: flex; align-items: center; justify-content: center;
  cursor: pointer; z-index: 490; box-shadow: var(--shadow-md);
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  font-size: 1rem;
}
#scroll-top.visible { opacity: 1; pointer-events: all; }
#scroll-top:hover { transform: translateY(-2px); color: var(--accent); }

/* ── 20. MOBILE RESPONSIVE ── */
@media (max-width: 768px) {
  .hero { padding: 36px 20px 32px; }
  .hero-title { font-size: 1.9rem; }
  .hero-stats { gap: 10px; }
  .stat-pill { padding: 8px 14px; }
  .stat-pill .n { font-size: 1.5rem; }

  #dashboard { padding: 14px 14px 0; }
  .dash-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .dash-card { padding: 14px 16px; }
  .dash-card-value { font-size: 1.7rem; }

  #toolbar { padding: 0 14px; }
  .toolbar-inner { padding: 10px 12px; gap: 8px; }
  .toolbar-actions { margin-left: 0; }

  #sticky-nav { padding: 0 12px; }
  .nav-tab { padding: 11px 12px; font-size: 0.75rem; }

  .legend-wrap { padding: 0 14px; }
  .day-section { padding: 0 14px; }
  .day-header { padding: 16px 18px; }
  .day-title { font-size: 1rem; }
  .day-sub { display: none; }
  .day-stat-box { display: none; }

  .master-row { padding: 12px 14px; }
  .chips-row { display: none; } /* Save space on mobile */

  .schedule-table { font-size: 0.8rem; }
  .schedule-table thead th { font-size: 0.65rem; padding: 8px 8px; }
  .schedule-table td { padding: 8px 8px; }
  .notes-cell, .diff-cell { display: none; }

  #pomo-panel { left: 14px; right: 14px; bottom: 14px; min-width: unset; }
  #pomo-fab { bottom: 14px; right: 14px; width: 48px; height: 48px; font-size: 1.2rem; }

  .progress-bar-row { flex-wrap: wrap; gap: 6px; }
  .progress-bar-label { min-width: unset; font-size: 0.78rem; }
}

@media (max-width: 480px) {
  .dash-grid { grid-template-columns: repeat(2, 1fr); }
  .filter-group { display: none; } /* Compact on very small screens */
}

/* ── 21. ANIMATIONS ── */
@keyframes row-complete {
  0%   { background: var(--green-bg); }
  50%  { background: rgba(39,174,96,0.2); }
  100% { background: var(--green-bg); }
}
.row-complete-anim { animation: row-complete 0.5s ease; }

@keyframes pulse-once {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.05); }
  100% { transform: scale(1); }
}
.pulse { animation: pulse-once 0.3s ease; }

@keyframes slide-in-row {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}
.slide-in { animation: slide-in-row 0.3s ease forwards; }

/* ── 22. PRINT ── */
@media print {
  #sticky-nav, #toolbar, #dashboard, #pomo-panel, #pomo-fab,
  .diff-cell, .notes-cell, .cb-cell, .mark-all-btn,
  .modal-overlay, #toast, #revision-panel, #scroll-top { display: none !important; }
  .day-section { page-break-inside: avoid; }
  .day-section.collapsed .day-body { display: block !important; }
}