/* ═══════════════════════════════════════════
   GoalTracker — Calm, focused design system
   Inspired by Linear, Apple Reminders, Raycast
   ═══════════════════════════════════════════ */

/* ── Tokens ── */
:root {
  --font: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --radius: 10px;
  --radius-sm: 7px;
  --radius-xs: 5px;
  --transition: 0.18s ease;
  --sidebar-w: 200px;
}

/* ── Dark theme (default) — Zinc palette ── */
[data-theme="dark"] {
  --bg-0: #09090b;
  --bg-1: #0e0e12;
  --bg-2: #18181b;
  --bg-3: #27272a;
  --bg-hover: #1f1f23;
  --border: rgba(255,255,255,0.06);
  --border-focus: rgba(255,255,255,0.12);
  --text-0: #fafafa;
  --text-1: #e4e4e7;
  --text-2: #a1a1aa;
  --text-3: #52525b;
  --accent: #3b82f6;
  --accent-soft: rgba(59,130,246,0.1);
  --accent-hover: #2563eb;
  --success: #22c55e;
  --success-soft: rgba(34,197,94,0.1);
  --warning: #f59e0b;
  --warning-soft: rgba(245,158,11,0.1);
  --danger: #ef4444;
  --danger-soft: rgba(239,68,68,0.1);
  --overlay: rgba(0,0,0,0.55);
  --track: rgba(255,255,255,0.06);
  --kbd-bg: rgba(255,255,255,0.06);
  --kbd-border: rgba(255,255,255,0.1);
}

/* ── Light theme — Zinc palette ── */
[data-theme="light"] {
  --bg-0: #fafafa;
  --bg-1: #f4f4f5;
  --bg-2: #ffffff;
  --bg-3: #e4e4e7;
  --bg-hover: #f0f0f3;
  --border: rgba(0,0,0,0.06);
  --border-focus: rgba(0,0,0,0.12);
  --text-0: #09090b;
  --text-1: #18181b;
  --text-2: #71717a;
  --text-3: #a1a1aa;
  --accent: #2563eb;
  --accent-soft: rgba(37,99,235,0.08);
  --accent-hover: #1d4ed8;
  --success: #16a34a;
  --success-soft: rgba(22,163,74,0.08);
  --warning: #d97706;
  --warning-soft: rgba(217,119,6,0.08);
  --danger: #dc2626;
  --danger-soft: rgba(220,38,38,0.08);
  --overlay: rgba(0,0,0,0.2);
  --track: rgba(0,0,0,0.06);
  --kbd-bg: rgba(0,0,0,0.04);
  --kbd-border: rgba(0,0,0,0.08);
}

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

html {
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg-0);
  color: var(--text-1);
  display: flex;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
  line-height: 1.5;
}

::selection { background: var(--accent-soft); color: var(--accent); }
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--track); border-radius: 3px; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; font-family: var(--font); border: none; background: none; }
input, select, textarea { font-family: var(--font); }

/* ═══════════ SIDEBAR ═══════════ */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--bg-1);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 1.2rem 0.6rem;
  position: fixed;
  left: 0; top: 0; bottom: 0;
  z-index: 100;
  transition: transform var(--transition), background var(--transition);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0 0.6rem 1.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-0);
  letter-spacing: -0.02em;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 1px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 450;
  color: var(--text-2);
  transition: all var(--transition);
  position: relative;
}

.nav-item i { width: 16px; height: 16px; flex-shrink: 0; opacity: 0.7; }
.nav-item:hover { color: var(--text-1); background: var(--bg-hover); }
.nav-item:hover i { opacity: 1; }

.nav-item.active {
  color: var(--text-0);
  background: var(--bg-2);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 25%; bottom: 25%;
  width: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.nav-item.active i { opacity: 1; }

.sidebar-footer {
  padding-top: 0.8rem;
  border-top: 1px solid var(--border);
  margin-top: 0.8rem;
}

.theme-switch {
  display: flex;
  background: var(--bg-0);
  border-radius: var(--radius-sm);
  padding: 3px;
  gap: 2px;
}

.theme-btn {
  flex: 1;
  padding: 0.35rem;
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  transition: all var(--transition);
}

.theme-btn i { width: 14px; height: 14px; }
.theme-btn:hover { color: var(--text-1); }
.theme-btn.active { background: var(--bg-2); color: var(--text-0); box-shadow: 0 1px 3px rgba(0,0,0,0.1); }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--overlay);
  z-index: 99;
  backdrop-filter: blur(2px);
}

/* ═══════════ MAIN CONTENT ═══════════ */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  padding: 1.8rem 2.5rem 2.5rem;
  min-height: 100vh;
  max-width: 1200px;
  transition: margin var(--transition);
}

/* ═══════════ HEADER ═══════════ */
.header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.header-left { display: flex; align-items: flex-start; gap: 0.8rem; }

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  margin-top: 2px;
}
.menu-toggle:hover { background: var(--bg-2); }

h1 {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-0);
  letter-spacing: -0.025em;
  line-height: 1.3;
}

.header-date {
  font-size: 0.82rem;
  color: var(--text-3);
  font-weight: 400;
  margin-top: 2px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

/* Search */
.search-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.42rem 0.7rem;
  transition: border var(--transition), box-shadow var(--transition);
  min-width: 200px;
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.search-box i { color: var(--text-3); width: 15px; height: 15px; flex-shrink: 0; }

.search-box input {
  border: none; background: none; outline: none;
  color: var(--text-1); font-size: 0.85rem; width: 100%;
}

.search-box input::placeholder { color: var(--text-3); }

kbd {
  font-family: var(--font);
  font-size: 0.65rem;
  padding: 0.1rem 0.35rem;
  background: var(--kbd-bg);
  border: 1px solid var(--kbd-border);
  border-radius: 4px;
  color: var(--text-3);
  line-height: 1.4;
}

/* ═══════════ BUTTONS ═══════════ */
.btn-add {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--accent);
  color: #fff;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 550;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-add:hover { background: var(--accent-hover); }
.btn-add i { width: 15px; height: 15px; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: transparent;
  color: var(--text-2);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn-ghost:hover { color: var(--text-1); background: var(--bg-hover); }
.btn-ghost i { width: 14px; height: 14px; }
.btn-ghost-danger:hover { color: var(--danger); background: var(--danger-soft); }

.btn-danger {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--danger);
  color: #fff;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 550;
  border: none;
  transition: all var(--transition);
}

.btn-danger:hover { opacity: 0.9; }

.icon-btn {
  width: 30px; height: 30px;
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  transition: all var(--transition);
}

.icon-btn:hover { background: var(--bg-hover); color: var(--text-1); }
.icon-btn i { width: 16px; height: 16px; }

/* ═══════════ METRICS STRIP ═══════════ */
.metrics-strip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.8rem;
  flex-wrap: wrap;
}

.metric {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.85rem;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.78rem;
  color: var(--text-2);
  transition: all var(--transition);
}

.metric:hover { border-color: var(--border-focus); }

.metric-val {
  font-weight: 650;
  color: var(--text-0);
  font-variant-numeric: tabular-nums;
}

.metric-icon { font-size: 0.85rem; line-height: 1; }

/* ═══════════ FILTER TABS ═══════════ */
.filters-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.filter-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
}

.tab {
  padding: 0.5rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 450;
  color: var(--text-3);
  transition: all var(--transition);
  position: relative;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tab:hover { color: var(--text-1); }

.tab.active {
  color: var(--text-0);
  border-bottom-color: var(--accent);
  font-weight: 550;
}

.filter-controls { display: flex; gap: 0.4rem; }

.select-minimal {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.38rem 0.6rem;
  color: var(--text-2);
  font-size: 0.78rem;
  outline: none;
  cursor: pointer;
  transition: border var(--transition);
}

.select-minimal:hover { border-color: var(--border-focus); }
.select-minimal:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.select-minimal option { background: var(--bg-2); color: var(--text-1); }

/* ═══════════ GOALS GRID ═══════════ */
.goals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 0.8rem;
}

/* ═══════════ GOAL CARD ═══════════ */
.goal-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  transition: all var(--transition);
  animation: cardIn 0.25s ease both;
}

.goal-card:hover {
  border-color: var(--border-focus);
}

.goal-card.done { opacity: 0.55; }
.goal-card.done:hover { opacity: 0.8; }

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.badge {
  font-size: 0.68rem;
  font-weight: 550;
  padding: 0.12rem 0.5rem;
  border-radius: 100px;
  text-transform: capitalize;
  letter-spacing: 0.01em;
}

.badge.certification { background: var(--accent-soft); color: var(--accent); }
.badge.habit { background: var(--success-soft); color: var(--success); }
.badge.project { color: #06b6d4; background: rgba(6,182,212,0.1); }
.badge.personal { background: var(--warning-soft); color: var(--warning); }

.card-due {
  font-size: 0.72rem;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.card-due i { width: 12px; height: 12px; }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 550;
  color: var(--text-0);
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-actions {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--transition);
}

.goal-card:hover .card-actions { opacity: 1; }

.card-btn {
  width: 26px; height: 26px;
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  transition: all var(--transition);
}

.card-btn:hover { background: var(--bg-hover); color: var(--text-1); }
.card-btn.del:hover { color: var(--danger); background: var(--danger-soft); }
.card-btn i { width: 13px; height: 13px; }

/* ── Percentage progress ── */
.progress-section { }

.progress-num {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  margin-bottom: 0.4rem;
}

.progress-num .pct { font-size: 0.9rem; font-weight: 550; }

.progress-track {
  width: 100%;
  height: 4px;
  background: var(--track);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 0.45rem;
}

.progress-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--accent);
  transition: width 0.5s ease;
}

.progress-fill.high { background: var(--success); }
.progress-fill.complete { background: var(--success); }

.progress-detail {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-3);
}

/* ── Daily check ── */
.daily-section { }

.daily-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.5rem;
}

.check-circle {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 1.5px solid var(--border-focus);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
  background: transparent;
  color: transparent;
}

.check-circle:hover { border-color: var(--success); background: var(--success-soft); }
.check-circle i { width: 16px; height: 16px; }

.check-circle.done {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}

.daily-text {
  font-size: 0.82rem;
  color: var(--text-2);
  font-weight: 450;
}

.streak {
  font-size: 0.75rem;
  font-weight: 550;
  color: var(--text-3);
}

.streak.has { color: var(--warning); }
.streak-fire { display: inline-block; }

/* ═══════════ EMPTY STATE ═══════════ */
.empty-state {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 2rem;
  text-align: center;
}

.empty-state.show { display: flex; }

.empty-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
}

.empty-icon i { width: 24px; height: 24px; }

.empty-state h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-0);
  margin-bottom: 0.3rem;
}

.empty-state p { color: var(--text-3); font-size: 0.85rem; margin-bottom: 1.5rem; }

/* ═══════════ FOOTER QUOTE ═══════════ */
.footer-quote {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-quote p {
  font-size: 0.8rem;
  color: var(--text-3);
  font-style: italic;
  font-weight: 400;
}

/* ═══════════ MODAL ═══════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.modal-overlay.open { opacity: 1; visibility: visible; }

.modal {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 460px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.2);
  transform: translateY(12px) scale(0.98);
  transition: transform var(--transition);
}

.modal-overlay.open .modal { transform: translateY(0) scale(1); }
.modal-sm { max-width: 340px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.3rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 { font-size: 0.95rem; font-weight: 600; }
.modal-body { padding: 0.8rem 1.3rem; color: var(--text-2); font-size: 0.85rem; }

/* ═══════════ FORM ═══════════ */
form { padding: 1rem 1.3rem 0; }

.form-group { margin-bottom: 0.9rem; }

.form-group label {
  display: block;
  font-size: 0.78rem;
  font-weight: 550;
  color: var(--text-2);
  margin-bottom: 0.3rem;
}

.label-hint { font-weight: 400; color: var(--text-3); }

.progress-val {
  float: right;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.form-group input[type="text"],
.form-group input[type="date"],
.form-group select {
  width: 100%;
  padding: 0.5rem 0.7rem;
  background: var(--bg-0);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-1);
  font-size: 0.85rem;
  outline: none;
  transition: border var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.form-group input::placeholder { color: var(--text-3); }

/* Range */
.form-group input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--track);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.form-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  transition: transform var(--transition);
}

.form-group input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 0.8rem 1.3rem;
  border-top: 1px solid var(--border);
  margin-top: 0.3rem;
}

/* ═══════════ SETTINGS ═══════════ */
.settings-view h2 { font-size: 1.15rem; font-weight: 600; margin-bottom: 1.2rem; color: var(--text-0); }

.settings-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem;
  max-width: 500px;
}

.settings-actions { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.import-label { cursor: pointer; }

/* ═══════════ ANIMATIONS ═══════════ */
@keyframes cardIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ═══════════ RESPONSIVE ═══════════ */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  .main-content { margin-left: 0; padding: 1.2rem 1rem; }
  .menu-toggle { display: flex; }
  .header { flex-direction: column; gap: 1rem; }
  .header-right { width: 100%; }
  .search-box { flex: 1; min-width: 0; }
  .search-box kbd { display: none; }
  .filters-row { flex-direction: column; align-items: stretch; }
  .filter-tabs { overflow-x: auto; }
  .goals-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  h1 { font-size: 1.15rem; }
  .btn-add span { display: none; }
  .card-actions { opacity: 1; }
}

@media (max-width: 480px) {
  .metrics-strip { gap: 0.35rem; }
  .metric { font-size: 0.72rem; padding: 0.3rem 0.6rem; }
}