:root {
  --surface: #f9f9ff;
  --surface-dim: #d8d9e5;
  --container: rgba(255, 255, 255, 0.7);
  --container-strong: rgba(255, 255, 255, 0.85);
  --border-glass: rgba(255, 255, 255, 0.5);
  --on-surface: #181c23;
  --on-surface-variant: #414755;
  --outline: #717786;
  --primary: #0058bc;
  --primary-bright: #0070eb;
  --electric: #00e0ff;
  --glow: rgba(0, 122, 255, 0.3);
  --danger: #ba1a1a;
  --ok: #0f9d58;
  --radius-lg: 32px;
  --radius-md: 24px;
  --radius-sm: 16px;
  --page-margin: 24px;
  --nav-h: 84px;
  --font-display: "Hanken Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}
html.dark {
  --surface: #0e0f16;
  --surface-dim: #1a1c26;
  --container: rgba(30, 33, 46, 0.72);
  --container-strong: rgba(30, 33, 46, 0.9);
  --border-glass: rgba(255, 255, 255, 0.12);
  --on-surface: #eef0fc;
  --on-surface-variant: #c1c6d7;
  --outline: #8b90a0;
}
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html, body { height: 100%; }
body {
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--on-surface);
  -webkit-font-smoothing: antialiased;
}
#app { min-height: 100%; padding-bottom: calc(var(--nav-h) + 44px); }
.page { max-width: 480px; margin: 0 auto; padding: var(--page-margin); }

.app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 0 16px; gap: 12px;
}
.app-header h1 { font-family: var(--font-display); font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.app-header .sub { font-size: 13px; color: var(--on-surface-variant); margin-top: 2px; }

.glass-panel {
  background: var(--container);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  backdrop-filter: blur(25px) saturate(180%);
  -webkit-backdrop-filter: blur(25px) saturate(180%);
  box-shadow: 0 8px 32px rgba(0, 88, 188, 0.08);
}
.glass-panel + .glass-panel { margin-top: 16px; }

.btn-primary, .btn-ghost, .btn-danger {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; height: 52px; border-radius: 999px; border: none;
  font-family: var(--font-body); font-size: 17px; font-weight: 600;
  cursor: pointer; transition: transform 0.12s ease, box-shadow 0.2s ease, opacity 0.2s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--electric), var(--primary-bright) 55%, var(--primary));
  color: #fff;
  box-shadow: 0 8px 24px var(--glow);
}
.btn-primary:active { transform: scale(0.97); }
.btn-primary:disabled { opacity: 0.5; }
.btn-ghost { background: var(--container); color: var(--on-surface); border: 1px solid var(--border-glass); }
.btn-ghost:active { transform: scale(0.97); }
.btn-danger { background: rgba(186, 26, 26, 0.1); color: var(--danger); }
.btn-danger:active { transform: scale(0.97); }
.icon-btn {
  width: 44px; height: 44px; border-radius: 50%; border: none; cursor: pointer;
  background: var(--container); color: var(--on-surface);
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.icon-btn:active { transform: scale(0.92); }

.field-label { display: block; font-size: 13px; color: var(--on-surface-variant); margin: 14px 4px 6px; font-weight: 500; }
.field-input, .field-select, .field-textarea {
  width: 100%; background: var(--container); border: 1px solid var(--border-glass);
  border-radius: 16px; padding: 14px 16px; font-size: 16px; color: var(--on-surface);
  font-family: var(--font-body); outline: none;
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field-input:focus, .field-select:focus, .field-textarea:focus {
  border-color: var(--primary-bright); box-shadow: 0 0 0 3px var(--glow);
}
.field-textarea { min-height: 96px; resize: vertical; }

.chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 10px; border-radius: 999px; font-size: 12px;
  font-family: var(--font-mono); background: var(--container); color: var(--on-surface-variant);
  border: 1px solid var(--border-glass);
}

.priority-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.priority-high { background: #ff3b30; box-shadow: 0 0 8px rgba(255, 59, 48, 0.8); animation: pulse 1.6s infinite; }
.priority-medium { background: #ff9f0a; }
.priority-low { background: var(--electric); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.task-card {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--container); border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); padding: 14px;
  backdrop-filter: blur(25px) saturate(180%); -webkit-backdrop-filter: blur(25px) saturate(180%);
  cursor: pointer; transition: transform 0.12s ease, box-shadow 0.2s;
}
.task-card:active { transform: scale(0.98); }
.task-card.completed .task-title { text-decoration: line-through; opacity: 0.55; }
.task-card .task-title { font-size: 16px; font-weight: 500; line-height: 1.4; }
.task-card .task-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; font-size: 12px; color: var(--on-surface-variant); }
.task-card .task-meta .material-symbols-outlined { font-size: 13px; }

.checkbox {
  width: 24px; height: 24px; border-radius: 50%; flex-shrink: 0; margin-top: 2px;
  border: 2px solid var(--outline); background: transparent; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: transparent; transition: all 0.15s;
}
.checkbox.on { background: linear-gradient(135deg, var(--electric), var(--primary-bright)); border-color: transparent; color: #fff; }
.checkbox .material-symbols-outlined { font-size: 15px; }

.section-label {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em;
  color: var(--on-surface-variant); text-transform: uppercase;
  margin: 20px 4px 8px; display: flex; align-items: center; gap: 8px;
}
.section-label::after { content: ""; flex: 1; height: 1px; background: var(--border-glass); }

.bottom-nav {
  position: fixed; bottom: calc(12px + env(safe-area-inset-bottom)); left: 16px; right: 16px; z-index: 50;
  max-width: 480px; margin: 0 auto;
  display: flex; justify-content: space-around; align-items: stretch;
  background: var(--container-strong);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(30px) saturate(180%); -webkit-backdrop-filter: blur(30px) saturate(180%);
  border-radius: 999px;
  box-shadow: 0 10px 36px rgba(0, 88, 188, 0.22), 0 2px 10px rgba(0, 0, 0, 0.08);
  padding: 6px 12px;
  height: calc(var(--nav-h) - 12px);
}
.bottom-nav[hidden] { display: none !important; }

.task-card-wrap { position: relative; overflow: hidden; border-radius: var(--radius-sm); margin-bottom: 10px; touch-action: pan-y; }
.task-card-wrap .task-card { position: relative; z-index: 1; touch-action: pan-y; }
.task-card-wrap .task-card { transition: transform 0.2s ease, box-shadow 0.2s; }
.task-card-del {
  position: absolute; top: 0; right: 0; bottom: 0; width: 72px;
  background: var(--danger); color: #fff; border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.task-card-wrap.open .task-card-del { opacity: 1; pointer-events: auto; }
.task-card-wrap.open .task-card { transform: translateX(-72px); }
.nav-item {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px; background: none; border: none; cursor: pointer;
  color: var(--on-surface-variant); font-family: var(--font-mono); font-size: 11px;
  opacity: 0.65; transition: all 0.2s;
}
.nav-item .material-symbols-outlined { font-size: 26px; }
.nav-item.active { color: var(--primary-bright); opacity: 1; transform: translateY(-2px) scale(1.05); }
.nav-item.active .nav-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--electric); box-shadow: 0 0 8px var(--electric); }

.fab {
  position: fixed; right: 24px; bottom: calc(var(--nav-h) + 34px); z-index: 40;
  width: 60px; height: 60px; border-radius: 20px; border: none; cursor: pointer;
  background: linear-gradient(135deg, var(--electric), var(--primary-bright) 55%, var(--primary));
  color: #fff; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 24px var(--glow); transition: transform 0.12s;
}
.fab:active { transform: scale(0.9); }
.fab .material-symbols-outlined { font-size: 30px; }

.list-row {
  display: flex; align-items: center; gap: 14px; padding: 16px;
  background: var(--container); border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); cursor: pointer;
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.list-row + .list-row { margin-top: 10px; }
.list-row .row-icon {
  width: 44px; height: 44px; border-radius: 14px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; color: #fff;
}
.list-row .row-main { flex: 1; min-width: 0; }
.list-row .row-title { font-size: 16px; font-weight: 500; }
.list-row .row-sub { font-size: 13px; color: var(--on-surface-variant); margin-top: 2px; }

.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.stat-card { padding: 18px; }
.stat-card .stat-label { font-family: var(--font-mono); font-size: 12px; color: var(--on-surface-variant); display: flex; align-items: center; gap: 6px; }
.stat-card .stat-value { font-family: var(--font-display); font-size: 32px; font-weight: 700; margin-top: 8px; }
.stat-card .stat-unit { font-size: 13px; color: var(--on-surface-variant); font-family: var(--font-mono); }

.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; margin-top: 8px; }
.cal-week { text-align: center; font-family: var(--font-mono); font-size: 11px; color: var(--on-surface-variant); padding: 4px 0; }
.cal-day {
  aspect-ratio: 1; border-radius: 14px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; font-size: 15px; cursor: pointer;
  background: transparent; border: none; color: var(--on-surface); position: relative;
}
.cal-day.other { opacity: 0.3; }
.cal-day.today { background: linear-gradient(135deg, var(--electric), var(--primary-bright)); color: #fff; font-weight: 700; box-shadow: 0 4px 16px var(--glow); }
.cal-day.has-tasks::after { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--primary-bright); position: absolute; bottom: 6px; }
.cal-day.today.has-tasks::after { background: #fff; }
.cal-day.selected { outline: 2px solid var(--primary-bright); outline-offset: 1px; }

.achievement-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.ach-card { padding: 16px; display: flex; flex-direction: column; align-items: center; gap: 8px; text-align: center; }
.ach-card.locked { opacity: 0.4; filter: grayscale(1); }
.ach-card .ach-icon {
  width: 52px; height: 52px; border-radius: 18px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--electric), var(--primary-bright)); color: #fff;
}
.ach-card .ach-name { font-size: 15px; font-weight: 600; }
.ach-card .ach-desc { font-size: 12px; color: var(--on-surface-variant); }

.toggle { position: relative; width: 50px; height: 30px; border-radius: 999px; background: var(--surface-dim); border: none; cursor: pointer; transition: background 0.2s; flex-shrink: 0; }
.toggle::after { content: ""; position: absolute; top: 3px; left: 3px; width: 24px; height: 24px; border-radius: 50%; background: #fff; transition: transform 0.2s; box-shadow: 0 2px 6px rgba(0,0,0,0.2); }
.toggle.on { background: linear-gradient(135deg, var(--electric), var(--primary-bright)); }
.toggle.on::after { transform: translateX(20px); }

.sheet {
  position: fixed; inset: 0; z-index: 80; display: flex; align-items: flex-end; justify-content: center;
  background: rgba(0, 0, 0, 0.35); animation: fadeIn 0.2s;
}
.sheet .sheet-body {
  width: 100%; max-width: 480px; max-height: 86vh; overflow-y: auto;
  background: var(--surface); border-radius: 28px 28px 0 0; padding: 20px 24px calc(24px + env(safe-area-inset-bottom));
  animation: slideUp 0.25s;
}
@keyframes fadeIn { from { opacity: 0; } }
@keyframes slideUp { from { transform: translateY(40px); opacity: 0.5; } }

#toast-root { position: fixed; top: 16px; left: 0; right: 0; z-index: 100; display: flex; flex-direction: column; align-items: center; gap: 8px; pointer-events: none; }
.toast {
  max-width: 90%; padding: 12px 18px; border-radius: 999px; font-size: 14px;
  background: var(--container-strong); color: var(--on-surface); border: 1px solid var(--border-glass);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12); animation: slideUp 0.25s;
}

.empty-state { text-align: center; padding: 48px 24px; color: var(--on-surface-variant); }
.empty-state .material-symbols-outlined { font-size: 56px; opacity: 0.4; }
.empty-state p { margin-top: 12px; font-size: 15px; }

.auth-hero { text-align: center; padding: 48px 0 28px; }
.auth-logo {
  width: 88px; height: 88px; margin: 0 auto 16px; border-radius: 28px;
  background: linear-gradient(135deg, var(--electric), var(--primary-bright) 55%, var(--primary));
  display: flex; align-items: center; justify-content: center; color: #fff;
  font-size: 44px; font-weight: 700; font-family: var(--font-display);
  box-shadow: 0 16px 40px var(--glow);
}
.auth-title { font-family: var(--font-display); font-size: 32px; font-weight: 700; letter-spacing: -0.02em; }
.auth-sub { color: var(--on-surface-variant); margin-top: 6px; font-size: 15px; }
.auth-error { color: var(--danger); font-size: 13px; margin-top: 12px; text-align: center; min-height: 18px; }
.auth-switch { text-align: center; margin-top: 14px; font-size: 14px; color: var(--on-surface-variant); }
.auth-switch a { color: var(--primary-bright); text-decoration: none; font-weight: 500; }

.segmented { display: flex; background: var(--surface-dim); border-radius: 999px; padding: 4px; gap: 4px; }
.segmented button { flex: 1; border: none; background: transparent; padding: 10px 0; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--on-surface-variant); cursor: pointer; font-family: var(--font-body); }
.segmented button.active { background: var(--container-strong); color: var(--on-surface); box-shadow: 0 2px 8px rgba(0,0,0,0.08); }

.ring-wrap { position: relative; }
.ring-track { stroke: var(--surface-dim); }
.ring-fill { stroke: url(#ringGrad); stroke-linecap: round; transition: stroke-dashoffset 1s linear; filter: drop-shadow(0 0 6px var(--electric)); }

.divider { height: 1px; background: var(--border-glass); margin: 14px 0; }
.mt-8 { margin-top: 8px; } .mt-12 { margin-top: 12px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.flex { display: flex; } .flex-col { flex-direction: column; } .items-center { align-items: center; } .justify-between { justify-content: space-between; } .justify-center { justify-content: center; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .flex-1 { flex: 1; }
.text-muted { color: var(--on-surface-variant); } .text-danger { color: var(--danger); }
.w-full { width: 100%; } .text-center { text-align: center; }
.hidden { display: none !important; }