/* ─── Design Tokens ────────────────────────────────────────────────────────── */
:root {
  --bg:          #0d0f14;
  --bg2:         #13161e;
  --bg3:         #1a1e2a;
  --border:      #252a38;
  --border-glow: #3b6bff44;
  --text:        #e8eaf0;
  --text-muted:  #606880;
  --text-dim:    #8b91a8;
  --accent:      #3b6bff;
  --accent-glow: #3b6bff33;
  --accent-h:    #5584ff;
  --green:       #22d38a;
  --green-glow:  #22d38a22;
  --red:         #ff4f6a;
  --red-glow:    #ff4f6a22;
  --amber:       #ffb240;
  --radius:      12px;
  --radius-sm:   8px;
  --shadow:      0 4px 32px #00000060;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding-bottom: 60px;
}

/* ─── Header ───────────────────────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.3px;
}
.logo-icon { font-size: 1.4rem; }
.logo-text em {
  font-style: normal;
  color: var(--accent);
  font-weight: 400;
  margin-left: 6px;
}

.user-selector {
  display: flex;
  align-items: center;
  gap: 10px;
}
.user-selector label {
  font-size: .8rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .6px;
}
#user-select {
  background: var(--bg3);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-family: 'Inter', sans-serif;
  font-size: .9rem;
  cursor: pointer;
  outline: none;
  transition: border-color .2s;
}
#user-select:focus { border-color: var(--accent); }

/* ─── Main Layout ──────────────────────────────────────────────────────────── */
.main {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ─── Tracker Card ─────────────────────────────────────────────────────────── */
.tracker-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  box-shadow: var(--shadow);
  transition: border-color .3s, box-shadow .3s;
}
.tracker-card.running {
  border-color: var(--green);
  box-shadow: 0 0 40px var(--green-glow), var(--shadow);
}

.tracker-status {
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-muted);
}
.tracker-card.running .tracker-status { color: var(--green); }

.timer-display {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--text);
  transition: color .3s;
  line-height: 1;
}
.tracker-card.running .timer-display { color: var(--green); }

.task-row {
  display: flex;
  gap: 12px;
  width: 100%;
  max-width: 600px;
}

.task-input {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: .95rem;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.task-input::placeholder { color: var(--text-muted); }
.task-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn-start {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 13px 24px;
  font-family: 'Inter', sans-serif;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, transform .1s, box-shadow .2s;
  white-space: nowrap;
}
.btn-start:hover { background: var(--accent-h); box-shadow: 0 0 20px var(--accent-glow); }
.btn-start:active { transform: scale(.97); }
.btn-start.stopping { background: var(--red); }
.btn-start.stopping:hover { background: #ff6a80; box-shadow: 0 0 20px var(--red-glow); }

.running-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .85rem;
  color: var(--green);
  font-weight: 500;
}

.pulse-dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 1.4s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .4; transform: scale(.7); }
}

/* ─── Stats Bar ────────────────────────────────────────────────────────────── */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.stat-pill {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: center;
}
.stat-label {
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--text-muted);
}
.stat-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--accent);
}

/* ─── History ──────────────────────────────────────────────────────────────── */
.history-section {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.history-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.history-header h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

#filter-input {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: .85rem;
  width: 220px;
  outline: none;
  transition: border-color .2s;
}
#filter-input:focus { border-color: var(--accent); }
#filter-input::placeholder { color: var(--text-muted); }

.table-wrapper { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
}
thead tr {
  background: var(--bg3);
}
th {
  padding: 12px 18px;
  text-align: left;
  font-size: .7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
td {
  padding: 13px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  transition: background .15s;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--bg3); }

.cell-user {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.user-badge {
  width: 26px; height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .7rem;
  font-weight: 700;
  flex-shrink: 0;
}
.badge-1 { background: #3b6bff22; color: var(--accent); }
.badge-2 { background: #22d38a22; color: var(--green);  }

.duration-cell {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  color: var(--amber);
}
.date-cell { color: var(--text-dim); font-size: .82rem; }
.time-cell { color: var(--text-muted); font-size: .8rem; font-family: 'JetBrains Mono', monospace; }

.btn-delete {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 5px 8px;
  border-radius: 6px;
  font-size: .85rem;
  transition: color .2s, border-color .2s, background .2s;
}
.btn-delete:hover {
  color: var(--red);
  border-color: var(--red-glow);
  background: var(--red-glow);
}

.empty-state {
  padding: 48px;
  text-align: center;
  color: var(--text-muted);
  font-size: .9rem;
}

/* ─── Toast ────────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: var(--bg3);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: .875rem;
  font-weight: 500;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity .25s, transform .25s;
  z-index: 999;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.success { border-left: 3px solid var(--green); }
.toast.error   { border-left: 3px solid var(--red);   }

/* ─── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .header { padding: 14px 16px; flex-wrap: wrap; gap: 10px; }
  .main   { padding: 20px 12px; }
  .tracker-card { padding: 24px 16px; }
  .task-row { flex-direction: column; }
  .btn-start { justify-content: center; }
  .stats-bar { grid-template-columns: 1fr; }
  #filter-input { width: 100%; }
}