/* ===========================
   Variables y Reset
=========================== */
:root {
  --color-pomodoro: #e05c5c;
  --color-short: #4caf91;
  --color-long: #4a90d9;

  --bg: #1a1a2e;
  --surface: #16213e;
  --surface-alt: #0f3460;
  --text: #eaeaea;
  --text-muted: #9a9ab0;
  --border: rgba(255,255,255,0.08);

  --accent: var(--color-pomodoro);
  --radius: 12px;
  --transition: 0.3s ease;
}

/* Tema por modo */
body[data-mode="pomodoro"] { --accent: var(--color-pomodoro); }
body[data-mode="short"]    { --accent: var(--color-short); }
body[data-mode="long"]     { --accent: var(--color-long); }

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

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

/* ===========================
   App container
=========================== */
.app {
  width: 100%;
  max-width: 420px;
  padding: 24px 20px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

/* ===========================
   Header
=========================== */
.app-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.app-title {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--accent);
  transition: color var(--transition);
}

/* ===========================
   Stats
=========================== */
.stats-section {
  display: flex;
  gap: 40px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  transition: color var(--transition);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===========================
   Ciclos
=========================== */
.cycles-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.cycles-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.cycles-dots {
  display: flex;
  gap: 10px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--surface-alt);
  transition: background var(--transition);
}

.dot.active {
  background: var(--accent);
}

.dot.done {
  background: var(--accent);
  opacity: 0.5;
}

/* ===========================
   Toast
=========================== */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--surface-alt);
  color: var(--text);
  padding: 12px 24px;
  border-radius: 40px;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  z-index: 999;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.hidden { display: none !important; }