/* ===== Aerolight Cosmic Dark — refined ===== */
:root {
  --bg: #050810;
  --bg-2: #0a1220;
  --panel: rgba(15, 22, 36, 0.62);
  --panel-2: rgba(20, 30, 48, 0.78);
  --border: rgba(140, 175, 230, 0.12);
  --border-strong: rgba(140, 175, 230, 0.25);
  --text: #eef3fb;
  --text-2: rgba(238, 243, 251, 0.72);
  --text-3: rgba(238, 243, 251, 0.45);
  --accent: #4d8dff;
  --accent-2: #5cb1ff;
  --accent-glow: rgba(77, 141, 255, 0.4);
  --gold: #ffd566;
  --green: #22d68a;
  --red: #ff7a85;
  --orange: #ffb454;
  --violet: #b58cff;

  /* System colors */
  --sys-cardio: #4d8dff;
  --sys-renal: #5cb1ff;
  --sys-pneumo: #6cc4ee;
  --sys-heme: #ff7a85;
  --sys-gi: #ffb454;
  --sys-endo: #ffd566;
  --sys-repro: #ff9ec7;
  --sys-psych: #b58cff;
  --sys-neuro: #8aa6ff;
  --sys-msk: #5dd6c0;
  --sys-derma: #f7a07a;
  --sys-path: #ff8aa0;
  --sys-micro: #c1f070;
  --sys-immuno: #ff8ab4;
  --sys-biochem: #88e0d0;
  --sys-biostats: #b8c2d4;
  --sys-misc: #9aa3b8;
  --sys-sweep: #ffd566;

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 22px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Lora', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

#root { min-height: 100vh; }

/* Cosmic backdrop */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 13% 18%, rgba(255,255,255,0.55), transparent 2px),
    radial-gradient(1px 1px at 27% 72%, rgba(255,255,255,0.40), transparent 2px),
    radial-gradient(1.5px 1.5px at 41% 33%, rgba(180,210,255,0.55), transparent 2px),
    radial-gradient(1px 1px at 59% 86%, rgba(255,255,255,0.45), transparent 2px),
    radial-gradient(1px 1px at 73% 21%, rgba(255,255,255,0.55), transparent 2px),
    radial-gradient(2px 2px at 88% 64%, rgba(180,210,255,0.40), transparent 2px),
    radial-gradient(1px 1px at 94% 38%, rgba(255,255,255,0.50), transparent 2px),
    radial-gradient(1px 1px at  6% 91%, rgba(255,255,255,0.40), transparent 2px),
    radial-gradient(1.5px 1.5px at 35% 8%, rgba(255,255,255,0.55), transparent 2px),
    radial-gradient(1px 1px at 65% 48%, rgba(180,210,255,0.45), transparent 2px);
  background-size: 700px 700px;
  background-repeat: repeat;
  opacity: 0.4;
}
body::after {
  content: '';
  position: fixed;
  top: -300px; left: 50%; transform: translateX(-50%);
  width: 1500px; height: 800px;
  background: radial-gradient(ellipse at center, rgba(77,141,255,0.28) 0%, rgba(77,141,255,0.08) 40%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
  z-index: -1;
}

button, input, select, textarea {
  font-family: inherit;
  color: inherit;
}
button { cursor: pointer; border: none; background: none; }

/* App layout */
.app {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5, 8, 16, 0.78);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border-bottom: 1px solid var(--border);
  margin: 0 -24px 24px;
  padding: 0 24px;
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px 0;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, #4d8dff, #6cc4ee);
  border-radius: 8px;
  display: grid; place-items: center;
  color: white; font-weight: 800; font-size: 13px;
  font-family: var(--font-sans);
  box-shadow: 0 0 16px rgba(77,141,255,0.45);
}
.brand-sub {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
}
.brand-stack { display: flex; flex-direction: column; line-height: 1.1; }

.nav {
  display: flex; gap: 4px;
  margin-left: auto;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px;
}
.nav-btn {
  padding: 7px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  white-space: nowrap;
  transition: all 0.18s;
}
.nav-btn:hover { color: var(--text); background: rgba(255,255,255,0.04); }
.nav-btn.active {
  background: linear-gradient(135deg, var(--accent), #1f6ce8);
  color: white;
  box-shadow: 0 0 16px var(--accent-glow);
}

.header-actions { display: flex; gap: 8px; }
.icon-btn {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  display: grid; place-items: center;
  color: var(--text-2);
  transition: all 0.18s;
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); background: rgba(255,255,255,0.07); }

/* Cards */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  padding: 22px;
}
.card-tight { padding: 16px; }

/* Hero/today header */
.today-hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 16px;
  margin-bottom: 18px;
}
.today-card {
  background: linear-gradient(135deg, rgba(77,141,255,0.14), rgba(77,141,255,0.04));
  border: 1px solid rgba(77,141,255,0.32);
  border-radius: var(--r-xl);
  padding: 26px 28px;
  position: relative;
  overflow: hidden;
}
.today-card::before {
  content: '';
  position: absolute;
  top: -120px; right: -120px;
  width: 360px; height: 360px;
  background: radial-gradient(ellipse, rgba(77,141,255,0.25), transparent 60%);
  filter: blur(20px);
  pointer-events: none;
}
.today-eyebrow {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 600;
  margin-bottom: 8px;
}
.today-title {
  font-family: var(--font-serif);
  font-size: 34px;
  line-height: 1.05;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.today-sub {
  color: var(--text-2);
  font-size: 14px;
}
.today-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}
.stat-cell {
  background: var(--panel-2);
  padding: 16px 14px;
  text-align: left;
}
.stat-label {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 600;
  margin-bottom: 6px;
}
.stat-value {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat-sub {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 4px;
}
.stat-value.green { color: var(--green); }
.stat-value.gold { color: var(--gold); }
.stat-value.red { color: var(--red); }
.stat-value.violet { color: var(--violet); }
.stat-value.accent { color: var(--accent-2); }

/* Progress strip */
.progress-strip {
  margin-bottom: 18px;
}
.progress-bar {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 100px;
  overflow: hidden;
  position: relative;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 10px var(--accent-glow);
  border-radius: 100px;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.progress-fill.gold {
  background: linear-gradient(90deg, var(--gold), #ffe699);
  box-shadow: 0 0 10px rgba(255,213,102,0.4);
}
.progress-fill.green {
  background: linear-gradient(90deg, var(--green), #5fe6ad);
  box-shadow: 0 0 10px rgba(34,214,138,0.4);
}
.progress-meta {
  display: flex; justify-content: space-between;
  font-size: 12px;
  color: var(--text-3);
  margin-top: 8px;
}

/* Section heading */
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin: 28px 0 14px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.section-eyebrow {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 600;
  margin-bottom: 4px;
}

/* Block list */
.block-list { display: flex; flex-direction: column; gap: 10px; }
.block-row {
  display: grid;
  grid-template-columns: auto 12px 1fr auto auto;
  gap: 14px;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--block-color, var(--accent));
  border-radius: var(--r-md);
  padding: 14px 16px;
  transition: all 0.18s;
}
.block-row:hover {
  background: rgba(255,255,255,0.03);
  border-color: var(--border-strong);
  transform: translateX(2px);
}
.block-row.done {
  opacity: 0.55;
  background: rgba(34,214,138,0.04);
}
.block-row.done .block-main-label { text-decoration: line-through; color: var(--text-3); }

.checkbox {
  width: 22px; height: 22px;
  border-radius: 6px;
  border: 1.5px solid var(--border-strong);
  background: rgba(255,255,255,0.04);
  display: grid; place-items: center;
  transition: all 0.15s;
  cursor: pointer;
  flex-shrink: 0;
}
.checkbox:hover { border-color: var(--accent); background: rgba(77,141,255,0.08); }
.checkbox.checked {
  background: linear-gradient(135deg, var(--green), #1ab777);
  border-color: var(--green);
  box-shadow: 0 0 12px rgba(34,214,138,0.4);
}
.checkbox.checked::after {
  content: ''; width: 5px; height: 9px;
  border: solid white; border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-1px, -1px);
}

.block-color-strip {
  width: 4px; height: 28px;
  background: var(--block-color, var(--accent));
  border-radius: 2px;
  box-shadow: 0 0 8px var(--block-color, var(--accent));
}

.block-main {
  display: flex; flex-direction: column; gap: 2px;
  min-width: 0;
}
.block-main-top {
  display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap;
}
.session-pill {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  background: rgba(77,141,255,0.16);
  color: var(--accent-2);
  border: 1px solid rgba(77,141,255,0.28);
  border-radius: 4px;
  letter-spacing: 0.04em;
}
.system-pill {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  background: var(--block-color-soft, rgba(77,141,255,0.16));
  color: var(--block-color, var(--accent-2));
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.block-main-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.3;
}
.block-main-meta {
  font-size: 12px;
  color: var(--text-3);
}

.block-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-2);
  background: rgba(255,255,255,0.04);
  padding: 4px 8px;
  border-radius: 6px;
  white-space: nowrap;
}

.block-actions {
  display: flex; gap: 6px;
  align-items: center;
}
.action-btn {
  height: 32px;
  padding: 0 12px;
  border-radius: 8px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 12px;
  font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px;
  transition: all 0.15s;
  white-space: nowrap;
}
.action-btn:hover { color: var(--text); background: rgba(77,141,255,0.1); border-color: var(--border-strong); }
.action-btn.primary {
  background: linear-gradient(135deg, var(--accent), #1f6ce8);
  color: white;
  border-color: transparent;
  box-shadow: 0 0 14px var(--accent-glow);
}
.action-btn.primary:hover { filter: brightness(1.1); }
.action-btn.icon-only { padding: 0; width: 32px; justify-content: center; }
.action-btn.success { color: var(--green); border-color: rgba(34,214,138,0.3); }
.action-btn.copied {
  background: rgba(34,214,138,0.16);
  color: var(--green);
  border-color: rgba(34,214,138,0.4);
}

/* Block expanded */
.block-expanded {
  margin-top: 10px;
  padding: 14px 16px;
  background: rgba(0,0,0,0.32);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  display: flex; flex-direction: column; gap: 12px;
}
.qid-grid {
  display: flex; flex-wrap: wrap; gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
}
.qid-chip {
  padding: 3px 7px;
  background: rgba(77,141,255,0.08);
  border: 1px solid rgba(77,141,255,0.18);
  border-radius: 4px;
  color: var(--accent-2);
  font-weight: 500;
}
.qid-string {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-2);
  background: rgba(77,141,255,0.06);
  border: 1px solid rgba(77,141,255,0.18);
  border-radius: 6px;
  padding: 8px 10px;
  word-break: break-all;
  user-select: all;
  line-height: 1.6;
}

.accuracy-row {
  display: flex; align-items: center; gap: 10px;
  flex-wrap: wrap;
}
.accuracy-input {
  display: flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 10px;
}
.accuracy-input label {
  font-size: 11px; color: var(--text-3);
  letter-spacing: 0.06em; text-transform: uppercase;
}
.accuracy-input input {
  width: 50px;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  text-align: center;
  padding: 4px 0;
  outline: none;
}
.accuracy-pct {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
}
.accuracy-pct.good { color: var(--green); background: rgba(34,214,138,0.1); }
.accuracy-pct.mid { color: var(--gold); background: rgba(255,213,102,0.1); }
.accuracy-pct.low { color: var(--red); background: rgba(255,122,133,0.1); }

/* Day header */
.day-header {
  display: flex; align-items: baseline; gap: 12px;
  padding: 14px 18px;
  background: rgba(77,141,255,0.06);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-md);
  margin-bottom: 12px;
}
.day-header.today {
  background: linear-gradient(135deg, rgba(77,141,255,0.18), rgba(77,141,255,0.04));
  border-color: var(--accent-2);
  box-shadow: 0 0 0 1px rgba(77,141,255,0.18), 0 0 24px rgba(77,141,255,0.16);
}
.day-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.day-date { color: var(--text-3); font-family: var(--font-mono); font-size: 12px; }
.day-meta { margin-left: auto; font-size: 12px; color: var(--text-3); }
.day-meta strong { color: var(--text); }
.today-badge {
  background: linear-gradient(135deg, var(--accent), #1f6ce8);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 100px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 0 10px var(--accent-glow);
}

/* Calendar / weeks grid */
.weeks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.week-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 14px 16px;
  cursor: pointer;
  transition: all 0.18s;
  position: relative;
}
.week-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.3);
}
.week-card.current {
  border-color: rgba(77,141,255,0.5);
  background: linear-gradient(135deg, rgba(77,141,255,0.1), var(--panel));
  box-shadow: 0 0 0 1px rgba(77,141,255,0.25), 0 0 24px rgba(77,141,255,0.18);
}
.week-card-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 8px;
}
.week-num {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.week-num small { font-size: 11px; color: var(--text-3); font-weight: 500; font-family: var(--font-sans); margin-right: 3px; }
.week-dates { font-size: 11px; color: var(--text-3); font-family: var(--font-mono); }
.week-card-systems {
  display: flex; flex-wrap: wrap; gap: 4px;
  margin-bottom: 10px;
  min-height: 22px;
}
.week-card-progress { font-size: 11px; color: var(--text-3); margin-top: 6px; }

/* System breakdown */
.system-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}
.system-card-app {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 16px 18px;
  border-left: 3px solid var(--block-color, var(--accent));
}
.system-card-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 10px;
}
.system-name {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
}
.system-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 10px;
}
.system-stat {
  text-align: center;
}
.system-stat-value {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}
.system-stat-label {
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-top: 2px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 28px; left: 50%; transform: translateX(-50%);
  background: var(--panel-2);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(20px);
  color: var(--text);
  padding: 12px 20px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  display: flex; align-items: center; gap: 10px;
  animation: toast-in 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 200;
}
.toast.success { border-color: rgba(34,214,138,0.4); }
.toast.success::before {
  content: '✓'; color: var(--green); font-weight: 700;
}
@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 12px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

/* Empty / placeholder */
.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-3);
}
.empty-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--text-2);
  margin-bottom: 6px;
}

/* Filters */
.filter-bar {
  display: flex; gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.filter-chip {
  padding: 6px 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-2);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  transition: all 0.15s;
}
.filter-chip:hover { color: var(--text); border-color: var(--border-strong); }
.filter-chip.active {
  background: linear-gradient(135deg, var(--accent), #1f6ce8);
  color: white;
  border-color: transparent;
  box-shadow: 0 0 12px var(--accent-glow);
}

/* Sweep block */
.block-row.sweep {
  border-left-style: dashed;
  background: linear-gradient(135deg, rgba(255,213,102,0.06), var(--panel));
}
.sweep-label {
  font-style: italic;
  color: var(--gold);
  font-size: 12px;
  margin-top: 4px;
}

/* Anki widget */
.anki-card {
  background: linear-gradient(135deg, rgba(181,140,255,0.1), rgba(181,140,255,0.03));
  border: 1px solid rgba(181,140,255,0.28);
}
.anki-stats {
  display: flex; gap: 24px;
  margin-top: 12px;
}
.anki-stat-num {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--violet);
}
.anki-input-row {
  display: flex; gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.anki-input {
  background: rgba(0,0,0,0.32);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  width: 80px;
  outline: none;
  text-align: center;
}
.anki-input:focus { border-color: var(--violet); }
.anki-input-label {
  font-size: 11px; color: var(--text-3);
  letter-spacing: 0.08em; text-transform: uppercase;
  align-self: center;
}

/* Modal */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(6px);
  display: grid; place-items: center;
  padding: 20px;
  animation: fade-in 0.18s ease;
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: var(--panel-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-xl);
  padding: 24px;
  max-width: 480px;
  width: 100%;
  backdrop-filter: blur(20px);
}
.modal h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 12px;
}
.modal p { color: var(--text-2); font-size: 14px; }
.modal-actions {
  display: flex; gap: 8px; justify-content: flex-end;
  margin-top: 18px;
}

/* Settings */
.setting-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.setting-row:last-child { border-bottom: none; }
.setting-label-stack { display: flex; flex-direction: column; gap: 2px; }
.setting-label { font-size: 14px; font-weight: 500; }
.setting-desc { font-size: 12px; color: var(--text-3); }

/* Responsive */
@media (max-width: 800px) {
  .app { padding: 0 16px 80px; }
  .app-header { margin: 0 -16px 16px; padding: 0 16px; }
  .header-inner { flex-wrap: wrap; gap: 10px; padding: 12px 0; }
  .nav { order: 3; width: 100%; justify-content: stretch; overflow-x: auto; }
  .nav-btn { flex: 1; min-width: max-content; padding: 7px 10px; font-size: 12px; }
  .today-hero { grid-template-columns: 1fr; }
  .today-card { padding: 22px 20px; }
  .today-title { font-size: 26px; }
  .today-stats { grid-template-columns: 1fr 1fr; }
  .stat-cell:nth-child(3) { grid-column: span 2; }
  .block-row {
    grid-template-columns: auto 4px 1fr;
    gap: 10px;
  }
  .block-color-strip { display: none; }
  .block-count, .block-actions {
    grid-column: 1 / -1;
    justify-self: start;
  }
  .block-actions { justify-self: stretch; flex-wrap: wrap; }
  .day-header { flex-wrap: wrap; }
  .day-meta { margin-left: 0; flex-basis: 100%; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 4px; }
  .week-num { font-size: 18px; }
  .weeks-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .system-grid { grid-template-columns: 1fr; }
  .modal { padding: 20px; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(140,175,230,0.18); border-radius: 100px; }
::-webkit-scrollbar-thumb:hover { background: rgba(140,175,230,0.32); }