:root {
  --bg: #070B14;
  --card: #101827;
  --card-2: #111D2E;
  --cyan: #38BDF8;
  --violet: #8B5CF6;
  --text: #E5E7EB;
  --muted: #94A3B8;
  --border: rgba(148, 163, 184, 0.2);
  --danger: #F87171;
  --success: #34D399;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 6%, rgba(56, 189, 248, 0.14), transparent 31rem),
    radial-gradient(circle at 84% 16%, rgba(139, 92, 246, 0.13), transparent 30rem),
    linear-gradient(135deg, #070B14 0%, #0B1020 55%, #070B14 100%);
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  min-height: 44px;
  border: 0;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

input,
textarea,
select {
  width: 100%;
  color: var(--text);
  background: rgba(7, 11, 20, 0.72);
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

input {
  min-height: 46px;
  padding: 0 0.9rem;
}

select {
  min-height: 46px;
  padding: 0 2.35rem 0 0.9rem;
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--cyan) 50%),
    linear-gradient(135deg, var(--cyan) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) 19px,
    calc(100% - 12px) 19px;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

textarea {
  min-height: 92px;
  resize: vertical;
  padding: 0.85rem 0.9rem;
  line-height: 1.5;
}

input:focus,
textarea:focus,
select:focus,
button:focus-visible {
  border-color: rgba(56, 189, 248, 0.72);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.14);
}

.app-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 52px;
}

.site-header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 0 30px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  flex: 0 0 auto;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: linear-gradient(145deg, rgba(17, 29, 46, 0.9), rgba(16, 24, 39, 0.56));
  box-shadow: 0 0 36px rgba(56, 189, 248, 0.13);
}

.logo-image {
  width: 48px;
  height: 48px;
  display: block;
}

.eyebrow,
.section-kicker {
  margin: 0 0 6px;
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(2rem, 5vw, 4.5rem);
  line-height: 0.98;
}

h2 {
  font-size: 1.18rem;
}

.glass-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.01)),
    rgba(16, 24, 39, 0.84);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.timer-card {
  padding: clamp(24px, 4vw, 44px);
}

.timer-topline,
.panel-heading,
.split-heading,
.control-row,
.modal-actions,
.toggle-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.timer-topline,
.split-heading {
  justify-content: space-between;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 0.85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(7, 11, 20, 0.55);
}

.status-badge.running {
  color: var(--success);
  border-color: rgba(52, 211, 153, 0.35);
}

.status-badge.paused {
  color: #FBBF24;
  border-color: rgba(251, 191, 36, 0.35);
}

.status-badge.break {
  color: var(--cyan);
  border-color: rgba(56, 189, 248, 0.42);
}

.timer-display {
  margin-top: 34px;
  font-variant-numeric: tabular-nums;
  font-size: clamp(4.4rem, 16vw, 10.5rem);
  font-weight: 800;
  line-height: 0.9;
  text-align: center;
  text-shadow: 0 0 48px rgba(56, 189, 248, 0.14);
}

.next-break,
.motivation,
.muted,
.app-message,
.field small {
  color: var(--muted);
}

.next-break {
  margin: 20px 0 18px;
  text-align: center;
}

.next-break strong {
  color: var(--text);
}

.progress-track {
  height: 10px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 999px;
  background: rgba(7, 11, 20, 0.74);
}

.progress-bar {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  box-shadow: 0 0 18px rgba(56, 189, 248, 0.36);
  transition: width 260ms ease;
}

.motivation {
  min-height: 1.5em;
  margin: 18px 0 0;
  text-align: center;
}

.control-row {
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 28px;
}

.primary-btn,
.secondary-btn,
.ghost-btn {
  border-radius: 8px;
  padding: 0 1rem;
  font-weight: 750;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.primary-btn {
  color: #04101C;
  background: linear-gradient(135deg, var(--cyan), #7DD3FC);
  box-shadow: 0 14px 36px rgba(56, 189, 248, 0.2);
}

.secondary-btn {
  color: var(--text);
  border: 1px solid rgba(56, 189, 248, 0.25);
  background: rgba(17, 29, 46, 0.86);
}

.ghost-btn {
  color: var(--muted);
  border: 1px solid var(--border);
  background: rgba(7, 11, 20, 0.35);
}

.primary-btn:hover,
.secondary-btn:hover,
.ghost-btn:hover {
  transform: translateY(-1px);
}

.small-btn {
  min-height: 36px;
  padding: 0 0.75rem;
  font-size: 0.88rem;
}

.app-message {
  min-height: 1.4em;
  margin: 18px 0 0;
  text-align: center;
}

.app-message.warning {
  color: #FBBF24;
}

.app-message.error {
  color: var(--danger);
}

.app-message.success {
  color: var(--success);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, 0.85fr);
  gap: 18px;
  margin-top: 18px;
}

.settings-stack,
.side-stack {
  display: grid;
  gap: 18px;
  align-content: start;
}

.panel {
  padding: 22px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.field span,
.break-type-title {
  display: block;
  margin-bottom: 8px;
  font-weight: 750;
}

.field small {
  display: block;
  margin-top: 8px;
  line-height: 1.45;
}

.toggle-row {
  flex-wrap: wrap;
  margin-top: 18px;
}

.toggle,
.break-type-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toggle {
  min-height: 44px;
}

.toggle input,
.break-type-item input {
  width: 1px;
  height: 1px;
  position: absolute;
  opacity: 0;
}

.toggle-ui {
  width: 46px;
  height: 26px;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(7, 11, 20, 0.74);
  transition: background 160ms ease, border-color 160ms ease;
}

.toggle-ui::before {
  content: "";
  display: block;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: var(--muted);
  transition: transform 160ms ease, background 160ms ease;
}

.toggle input:checked + .toggle-ui {
  border-color: rgba(56, 189, 248, 0.48);
  background: rgba(56, 189, 248, 0.16);
}

.toggle input:checked + .toggle-ui::before {
  transform: translateX(20px);
  background: var(--cyan);
}

.break-type-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.break-type-item {
  min-height: 76px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(17, 29, 46, 0.56);
  transition: border-color 160ms ease, background 160ms ease;
}

.break-type-item:has(input:checked) {
  border-color: rgba(56, 189, 248, 0.45);
  background: rgba(56, 189, 248, 0.08);
}

.check-mark {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  border: 1px solid var(--border);
  border-radius: 7px;
  color: transparent;
}

.check-mark::after {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg) translateY(-1px);
}

.break-type-item input:checked + .check-mark {
  color: #04101C;
  border-color: var(--cyan);
  background: var(--cyan);
}

.break-type-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.35;
}

.stat-number {
  margin: 18px 0 4px;
  font-size: 4.6rem;
  font-weight: 850;
  line-height: 0.95;
  color: var(--cyan);
}

.history-panel {
  min-height: 420px;
}

.history-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.history-item {
  padding: 13px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 10px;
  background: rgba(7, 11, 20, 0.34);
}

.history-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.86rem;
}

.history-item strong {
  color: var(--text);
}

.history-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.42;
}

.empty-state {
  padding: 22px;
  border: 1px dashed var(--border);
  border-radius: 10px;
  color: var(--muted);
  text-align: center;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(3, 7, 18, 0.76);
  backdrop-filter: blur(14px);
}

.modal-overlay[hidden] {
  display: none;
}

.break-modal {
  width: min(520px, 100%);
  padding: 28px;
  border: 1px solid rgba(56, 189, 248, 0.24);
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(56, 189, 248, 0.08), transparent),
    var(--card);
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.55), 0 0 46px rgba(56, 189, 248, 0.14);
}

.break-modal h2 {
  font-size: 2rem;
}

.modal-message {
  margin: 18px 0;
  color: var(--text);
  font-size: 1.12rem;
  line-height: 1.55;
}

.duration-pill {
  display: inline-flex;
  margin: 0;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(7, 11, 20, 0.36);
}

.modal-actions {
  flex-wrap: wrap;
  margin-top: 24px;
}

@media (max-width: 840px) {
  .content-grid,
  .form-grid,
  .break-type-list {
    grid-template-columns: 1fr;
  }

  .site-header {
    align-items: flex-start;
  }

  .timer-topline,
  .split-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .status-badge {
    align-self: flex-start;
  }
}

@media (max-width: 540px) {
  .app-shell {
    width: min(100% - 22px, 1120px);
    padding-top: 18px;
  }

  .site-header {
    gap: 12px;
  }

  .brand-mark {
    width: 54px;
    height: 54px;
    border-radius: 12px;
  }

  .logo-image {
    width: 40px;
    height: 40px;
  }

  .control-row,
  .modal-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .control-row button,
  .modal-actions button {
    width: 100%;
  }

  .timer-card,
  .panel,
  .break-modal {
    padding: 18px;
  }
}