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

/* ─── Variables ─────────────────────────────────────────────── */
:root {
  --bg: #0e0e0f;
  --surface: #18181a;
  --surface2: #222224;
  --border: rgba(255, 255, 255, 0.08);
  --text: #f0ede8;
  --muted: rgba(240, 237, 232, 0.45);
  --accent-focus: #e8c547;
  --accent-short: #4ecb8d;
  --accent-long: #5ba8f5;
  --font-mono: 'DM Mono', monospace;
  --font-sans: 'DM Sans', sans-serif;
  --radius: 16px;
}

/* ─── Base ───────────────────────────────────────────────────── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Background ambient glow */
body::before {
  content: '';
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 197, 71, 0.06) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  transition: background 1s ease;
}

body.rest::before {
  background: radial-gradient(circle, rgba(78, 203, 141, 0.06) 0%, transparent 70%);
}

body.long-rest::before {
  background: radial-gradient(circle, rgba(91, 168, 245, 0.06) 0%, transparent 70%);
}

/* ─── Layout ─────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 400px;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ─── Header ─────────────────────────────────────────────────── */
.header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}

.logo {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.logo span {
  color: var(--accent-focus);
  transition: color 1s ease;
}

body.rest .logo span      { color: var(--accent-short); }
body.long-rest .logo span { color: var(--accent-long); }

.total-sessions {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

/* ─── Phase badge ────────────────────────────────────────────── */
.phase-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 99px;
  border: 1px solid;
  margin-bottom: 2rem;
  transition: all 0.6s ease;
}

.phase-badge.focus {
  color: var(--accent-focus);
  border-color: rgba(232, 197, 71, 0.3);
  background: rgba(232, 197, 71, 0.07);
}

.phase-badge.rest {
  color: var(--accent-short);
  border-color: rgba(78, 203, 141, 0.3);
  background: rgba(78, 203, 141, 0.07);
}

.phase-badge.long {
  color: var(--accent-long);
  border-color: rgba(91, 168, 245, 0.3);
  background: rgba(91, 168, 245, 0.07);
}

/* ─── Ring ───────────────────────────────────────────────────── */
.ring-wrap {
  position: relative;
  width: 220px;
  height: 220px;
  margin-bottom: 2.5rem;
}

.ring-wrap svg {
  width: 100%;
  height: 100%;
}

.ring-bg {
  stroke: var(--surface2);
}

.ring-progress {
  stroke: var(--accent-focus);
  stroke-linecap: round;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
  transition: stroke-dashoffset 1s linear, stroke 0.8s ease;
}

body.rest .ring-progress      { stroke: var(--accent-short); }
body.long-rest .ring-progress { stroke: var(--accent-long); }

.ring-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.time-display {
  font-family: var(--font-mono);
  font-size: 52px;
  font-weight: 400;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1;
}

/* ─── Cycle dots ─────────────────────────────────────────────── */
.cycles {
  display: flex;
  gap: 10px;
  margin-bottom: 2.5rem;
}

.cycle-dot {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  transition: all 0.4s ease;
}

.cycle-dot.done {
  background: var(--accent-focus);
  border-color: var(--accent-focus);
  color: #000;
}

.cycle-dot.active {
  border-color: var(--accent-focus);
  color: var(--accent-focus);
  box-shadow: 0 0 0 3px rgba(232, 197, 71, 0.12);
}

body.rest .cycle-dot.done {
  background: var(--accent-short);
  border-color: var(--accent-short);
}

body.rest .cycle-dot.active {
  border-color: var(--accent-short);
  color: var(--accent-short);
  box-shadow: 0 0 0 3px rgba(78, 203, 141, 0.12);
}

/* ─── Controls ───────────────────────────────────────────────── */
.controls {
  display: flex;
  gap: 10px;
  margin-bottom: 2rem;
}

.btn {
  padding: 11px 28px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 0.01em;
}

.btn:hover  { background: var(--surface2); border-color: rgba(255, 255, 255, 0.15); }
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent-focus);
  color: #0e0e0f;
  border-color: transparent;
  min-width: 120px;
  transition: background 0.6s ease, color 0.2s, transform 0.1s;
}

.btn-primary:hover          { opacity: 0.88; background: var(--accent-focus); }
body.rest .btn-primary      { background: var(--accent-short); }
body.long-rest .btn-primary { background: var(--accent-long); }

/* ─── Info bar ───────────────────────────────────────────────── */
.info-bar {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.info-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.info-value {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
}

.info-label {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.info-sep {
  width: 1px;
  height: 28px;
  background: var(--border);
}

/* ─── Pulse animation ────────────────────────────────────────── */
@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0px rgba(232, 197, 71, 0.4); }
  100% { box-shadow: 0 0 0 20px rgba(232, 197, 71, 0); }
}

.ring-wrap.pulse svg circle.ring-progress {
  animation: pulse-ring 0.6s ease-out;
}

/* ─── Responsive — mobile ────────────────────────────────────── */
@media (max-width: 480px) {
  body {
    align-items: flex-start;
    overflow-y: auto;
  }

  .container {
    padding: 3rem 1.25rem 2rem;
    min-height: 100dvh;
    justify-content: center;
  }

  .header {
    margin-bottom: 2rem;
  }

  .logo {
    font-size: 12px;
  }

  .total-sessions {
    font-size: 11px;
  }

  .phase-badge {
    margin-bottom: 1.5rem;
  }

  .ring-wrap {
    width: min(68vw, 220px);
    height: min(68vw, 220px);
    margin-bottom: 2rem;
  }

  .time-display {
    font-size: clamp(36px, 12vw, 52px);
  }

  .cycles {
    gap: 8px;
    margin-bottom: 2rem;
  }

  .cycle-dot {
    width: 30px;
    height: 30px;
    font-size: 11px;
  }

  .controls {
    width: 100%;
    margin-bottom: 1.75rem;
  }

  .btn {
    flex: 1;
    padding: 13px 16px;
    font-size: 15px;
    min-height: 48px;
  }

  .btn-primary {
    min-width: unset;
  }

  .info-bar {
    gap: 1rem;
  }

  .info-value {
    font-size: 15px;
  }

  .info-label {
    font-size: 10px;
  }
}

/* ─── Responsive — very small screens ───────────────────────── */
@media (max-width: 360px) {
  .container {
    padding: 2rem 1rem 1.5rem;
  }

  .ring-wrap {
    width: 72vw;
    height: 72vw;
  }

  .time-display {
    font-size: 10vw;
  }

  .info-bar {
    gap: 0.75rem;
  }
}