/* ── Design tokens from landing page ── */
:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --fg: #e8e6e3;
  --fg-muted: #8a8895;
  --accent: #c4f04d;
  --accent-dim: rgba(196, 240, 77, 0.15);
  --accent-glow: rgba(196, 240, 77, 0.08);
  --warm: #f5a623;
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Navigation ── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 40px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.nav-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav-brand .accent { color: var(--accent); }
.nav-links { display: flex; gap: 24px; }
.nav-links a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--fg); }

/* ── Layout ── */
.app-layout {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px;
}

/* ── Timer Hero ── */
.timer-section {
  text-align: center;
  padding: 40px 0 60px;
}

.timer-label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.timer-display {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 8rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--fg);
  line-height: 1;
  margin-bottom: 48px;
  transition: color 0.3s;
}

.timer-display.running { color: var(--accent); }
.timer-display.paused  { color: var(--warm); }

/* ── Duration Picker ── */
.duration-picker {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}
.duration-picker label {
  font-size: 0.9rem;
  color: var(--fg-muted);
}
.duration-picker select {
  background: var(--bg-card);
  color: var(--fg);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 8px 16px;
  font-family: var(--font-body);
  font-size: 1rem;
  cursor: pointer;
  appearance: none;
  padding-right: 32px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a8895' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}
.duration-picker select:focus {
  outline: none;
  border-color: var(--accent);
}

/* ── Controls ── */
.controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}
.btn-primary {
  background: var(--accent);
  color: #0a0a0f;
}
.btn-primary:hover {
  background: #d4ff60;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(196, 240, 77, 0.25);
}
.btn-secondary {
  background: var(--bg-card);
  color: var(--fg);
  border: 1px solid rgba(255,255,255,0.1);
}
.btn-secondary:hover {
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--fg-muted);
  border: 1px solid rgba(255,255,255,0.08);
}
.btn-ghost:hover { color: var(--fg); border-color: rgba(255,255,255,0.15); }

/* ── Dashboard ── */
.dashboard {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 60px;
}

.dashboard-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 32px;
}
.dashboard-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.total-focus {
  font-size: 0.9rem;
  color: var(--fg-muted);
}
.total-focus strong { color: var(--accent); font-size: 1.1rem; }

.session-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.session-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 16px 20px;
}
.session-time {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--fg);
}
.session-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--fg-muted);
  font-size: 0.85rem;
}
.session-duration-badge {
  background: var(--accent-dim);
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.85rem;
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--fg-muted);
  background: var(--bg-card);
  border: 1px dashed rgba(255,255,255,0.08);
  border-radius: var(--radius);
}
.empty-state p { margin-top: 8px; font-size: 0.9rem; }