:root {
  color-scheme: dark;
  --bg-start: #05070c;
  --bg-end: #0b1018;
  --panel: rgba(14, 19, 29, 0.78);
  --panel-strong: rgba(18, 24, 36, 0.94);
  --panel-soft: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.08);
  --text: #f6f8fb;
  --muted: #95a0b2;
  --accent-exercise: #ff6b2c;
  --accent-rest: #45a7ff;
  --accent-round: #ffd15a;
  --accent-warning: #ff4538;
  --accent-idle: #8ea4c8;
  --accent-complete: #74e0ff;
  --accent: var(--accent-idle);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius: 28px;
  --radius-sm: 20px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  position: relative;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% 16%, rgba(255, 107, 44, 0.16), transparent 28%),
    radial-gradient(circle at 82% 12%, rgba(69, 167, 255, 0.14), transparent 25%),
    radial-gradient(circle at 50% 85%, rgba(255, 209, 90, 0.09), transparent 28%),
    linear-gradient(160deg, var(--bg-start) 0%, var(--bg-end) 100%);
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.02), transparent 40%),
    radial-gradient(circle at center, rgba(255, 255, 255, 0.02), transparent 60%);
  pointer-events: none;
}

body[data-phase="exercise"] {
  --accent: var(--accent-exercise);
}

body[data-phase="rest"] {
  --accent: var(--accent-rest);
}

body[data-phase="roundRest"] {
  --accent: var(--accent-round);
}

body[data-phase="prep"] {
  --accent: var(--accent-round);
}

body[data-phase="idle"] {
  --accent: var(--accent-idle);
}

body[data-phase="complete"] {
  --accent: var(--accent-complete);
}

body[data-warning="true"] {
  --accent: var(--accent-warning);
}

.bg-orb {
  position: fixed;
  width: 34rem;
  height: 34rem;
  border-radius: 999px;
  filter: blur(90px);
  opacity: 0.5;
  pointer-events: none;
}

.bg-orb--warm {
  top: -9rem;
  right: -12rem;
  background: rgba(255, 107, 44, 0.18);
}

.bg-orb--cool {
  left: -10rem;
  bottom: -14rem;
  background: rgba(69, 167, 255, 0.14);
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.55), transparent 88%);
  pointer-events: none;
}

.app-shell {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 1.5rem));
  margin: 0 auto;
  padding: 1.4rem 0 2.2rem;
  min-height: 100vh;
}

.app-shell--config {
  display: grid;
  place-items: center;
}

.app-shell--timer {
  display: grid;
  place-items: center;
  min-height: 100dvh;
  padding: 0.45rem 0;
}

.panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 18%), var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.panel::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.04), transparent 30%, transparent 70%, rgba(255, 255, 255, 0.03));
  pointer-events: none;
}

.panel--config,
.panel--timer {
  padding: 1.4rem;
}

.config-screen {
  width: min(860px, 100%);
  padding: 1.15rem 1.15rem 1.25rem;
}

.timer-screen {
  width: min(1120px, 100%);
  min-height: calc(100dvh - 0.9rem);
}

.panel__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel__header {
  margin-top: 0.95rem;
}

.panel__header h1 {
  margin: 0;
  font-family: "Teko", sans-serif;
  font-size: clamp(2.7rem, 6vw, 3.9rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 0.88;
}

.panel__header p {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.55;
  max-width: 46ch;
}

.summary-inline {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  gap: 1.25rem;
  align-items: center;
  padding: 0.9rem 0 0;
}

.summary-inline__time,
.summary-inline__stats {
  min-width: 0;
}

.summary-inline__time {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding-right: 0.4rem;
}

.summary-inline__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.summary-inline__item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.summary-inline__label {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.summary-inline__label--warm {
  color: #ffb089;
}

.summary-inline__label--cool {
  color: #87c6ff;
}

.summary-inline__value {
  display: block;
  font-family: "Teko", sans-serif;
  font-size: clamp(2.9rem, 5vw, 4.4rem);
  line-height: 0.88;
  letter-spacing: 0.04em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1, "lnum" 1;
  text-shadow: 0 0 26px rgba(255, 107, 44, 0.14);
}

.summary-inline__metric {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  min-width: 0;
}

.summary-inline__number {
  flex-shrink: 0;
  font-family: "Teko", sans-serif;
  font-size: clamp(1.65rem, 2.9vw, 2.25rem);
  line-height: 0.95;
  letter-spacing: 0.03em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1, "lnum" 1;
}

.summary-inline__suffix {
  min-width: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.2;
  text-transform: lowercase;
}

.config-grid {
  margin-top: 1rem;
}

.config-grid--triple,
.config-grid--double {
  display: grid;
  gap: 0.8rem;
  align-items: stretch;
}

.config-grid--triple {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.config-grid--double {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: min(100%, 560px);
  margin: 0.8rem auto 0;
}

.setting-card {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 0.42rem;
  min-height: 86px;
  padding: 0.72rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.03)),
    rgba(255, 255, 255, 0.025);
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.setting-card:focus-within {
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.18);
}

.setting-card__label {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.35;
}

.setting-card__field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
}

.setting-card input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  padding: 0;
  background: transparent;
  color: var(--text);
  font-family: "Teko", sans-serif;
  font-size: 1.52rem;
  letter-spacing: 0.05em;
  line-height: 0.95;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1, "lnum" 1;
}

.setting-card input::selection {
  background: rgba(255, 107, 44, 0.35);
}

.setting-card input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.setting-card input::-webkit-outer-spin-button,
.setting-card input::-webkit-inner-spin-button {
  margin: 0;
  -webkit-appearance: none;
}

.setting-card__unit {
  flex-shrink: 0;
  padding: 0.28rem 0.58rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.config-footer {
  margin-top: 0.95rem;
  padding-top: 0.95rem;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.35rem;
  align-items: center;
}

.panel__actions {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 0.95rem;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.panel__caption {
  color: var(--muted);
  max-width: 34ch;
  font-size: 0.9rem;
  line-height: 1.45;
}

.config-cta {
  display: grid;
  align-items: stretch;
  justify-self: end;
}

.config-cta .control-btn--wide {
  width: min(100%, 290px);
  min-width: 250px;
  align-self: stretch;
}

.panel--timer {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 0.9rem;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.06), transparent 30%),
    var(--panel-strong);
}

.timer-topbar {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 0.9rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  padding: 0.65rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
}

.back-link:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.status-pill::before {
  content: "";
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 18px var(--accent);
}

.status-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.22rem;
  margin-left: auto;
}

.status-meta__label,
.status-meta__detail {
  color: var(--muted);
  font-size: 0.84rem;
}

.status-meta strong {
  font-size: 1.1rem;
}

.timer-stage {
  display: grid;
  place-items: center;
  min-height: 0;
}

.progress-wrap {
  position: relative;
  display: grid;
  place-items: center;
  width: min(100%, 540px);
  aspect-ratio: 1;
}

.progress-ring {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 22px var(--accent));
}

.progress-ring__track,
.progress-ring__bar {
  fill: none;
  stroke-width: 13;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
}

.progress-ring__track {
  stroke: rgba(255, 255, 255, 0.08);
}

.progress-ring__bar {
  stroke: var(--accent);
  stroke-linecap: round;
  transition: stroke 220ms ease, filter 220ms ease;
}

.timer-core {
  position: absolute;
  inset: 14%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 1.05rem 1.4rem 1.3rem;
  text-align: center;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.06), transparent 45%),
    rgba(10, 14, 22, 0.82);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}

.timer-core__label,
.timer-core__hint {
  color: var(--muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.timer-core__label {
  font-size: 0.85rem;
  min-height: 1.2em;
}

.timer-core__value {
  display: inline-grid;
  place-items: center;
  min-width: 5ch;
  font-family: "Teko", sans-serif;
  font-size: clamp(5.5rem, 18vw, 9rem);
  line-height: 0.9;
  letter-spacing: 0.05em;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1, "lnum" 1;
  font-kerning: none;
}

.timer-core__hint {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-height: 2.3em;
  font-size: 0.78rem;
  line-height: 1.15;
  max-width: 19ch;
  text-wrap: balance;
}

.control-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
  width: min(100%, 780px);
  justify-self: center;
}

.control-btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  padding: 1rem 1.05rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease, opacity 180ms ease;
}

.control-btn:hover:enabled {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.18);
}

.control-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.control-btn--primary {
  border-color: rgba(255, 107, 44, 0.34);
  background: linear-gradient(135deg, rgba(255, 107, 44, 0.95), rgba(255, 140, 72, 0.82));
  color: #160d08;
  box-shadow: 0 16px 34px rgba(255, 107, 44, 0.22);
}

.control-btn--primary:hover:enabled {
  box-shadow: 0 18px 40px rgba(255, 107, 44, 0.28);
}

.control-btn--ghost {
  background: rgba(255, 255, 255, 0.03);
}

.control-btn--wide {
  min-width: 190px;
}

.phase-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.legend-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.65rem 0.85rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-size: 0.84rem;
}

.legend-chip::before {
  content: "";
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 999px;
  background: currentColor;
  box-shadow: 0 0 20px currentColor;
}

.legend-chip--exercise {
  color: var(--accent-exercise);
}

.legend-chip--rest {
  color: var(--accent-rest);
}

.legend-chip--round {
  color: var(--accent-round);
}

.legend-chip--warning {
  color: var(--accent-warning);
}

@media (max-width: 960px) {
  .app-shell {
    padding-top: 1rem;
  }

  .config-screen {
    width: min(760px, 100%);
  }

  .config-footer {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .panel__header p {
    max-width: none;
  }

  .timer-topbar {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .status-meta {
    margin-left: 0;
    align-items: flex-start;
  }
}

@media (max-width: 680px) {
  .app-shell {
    width: min(100% - 1rem, 100%);
    gap: 1rem;
    padding-bottom: 1.5rem;
  }

  .panel--config,
  .panel--timer {
    padding: 1rem;
  }

  .config-screen {
    padding: 1rem;
  }

  .summary-inline,
  .config-grid--triple,
  .config-grid--double,
  .control-row {
    grid-template-columns: 1fr;
  }

  .summary-inline {
    gap: 0.65rem;
  }

  .summary-inline__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .config-grid--double {
    width: 100%;
  }

  .config-cta {
    justify-self: stretch;
  }

  .config-cta .control-btn--wide {
    width: 100%;
    min-width: 0;
  }

  .setting-card {
    min-height: unset;
  }

  .control-btn--wide {
    width: 100%;
    min-width: 0;
  }

  .timer-stage {
    min-height: 320px;
  }

  .timer-core__value {
    font-size: clamp(4.6rem, 24vw, 6.2rem);
  }
}