/* ============================================
   Focus Mode — Full-Screen Immersive Timer
   ============================================ */

:root {
  --focus-bg: #0f172a;
  --focus-bg-break: #1a1a2e;
  --focus-text: #ffffff;
  --focus-text-muted: rgba(255, 255, 255, 0.5);
  --focus-text-subtle: rgba(255, 255, 255, 0.3);
  --focus-ring-track: rgba(255, 255, 255, 0.1);
  --focus-ring-active: var(--primary);
  --focus-ring-warning: #f59e0b;
  --focus-ring-break: #0d9488;
  --focus-ring-done: #10b981;
  --focus-surface: rgba(255, 255, 255, 0.05);
}

/* ── Sidebar Focus Button ── */

.focus-sidebar-trigger {
  background: var(--primary-bg) !important;
  color: var(--primary) !important;
  font-weight: 600;
  border: none;
}

.focus-sidebar-trigger:hover {
  background: var(--primary) !important;
  color: var(--text-inverse) !important;
}

.focus-sidebar-trigger i {
  color: inherit;
}

/* ── Overlay ── */

.focus-overlay {
  position: fixed;
  inset: 0;
  z-index: 12000;
  pointer-events: none;
  visibility: hidden;
}

.focus-overlay.active {
  pointer-events: auto;
  visibility: visible;
}

/* ── Ripple ── */

.focus-ripple {
  position: absolute;
  width: 1px;
  height: 1px;
  border-radius: 50%;
  background: var(--primary);
  transform: scale(0);
  transition: none;
  pointer-events: none;
}

.focus-ripple.expanding {
  transition: transform 500ms cubic-bezier(0.4, 0, 0.2, 1),
              background 200ms ease 400ms;
  transform: scale(var(--ripple-scale));
  background: var(--focus-bg);
}

.focus-ripple.collapsing {
  transition: transform 400ms cubic-bezier(0.4, 0, 0.8, 1);
  transform: scale(0);
  background: var(--focus-bg);
}

/* ── Content Container ── */

.focus-content {
  position: absolute;
  inset: 0;
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 200ms ease;
  overflow: hidden;
}

.focus-content.visible {
  opacity: 1;
}

/* ── Screens ── */

.focus-screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 300ms ease;
  opacity: 0;
  pointer-events: none;
  overflow-y: auto;
  padding: 2rem 1rem;
}

.focus-screen.hidden-left,
.focus-screen.hidden-right {
  opacity: 0;
  pointer-events: none;
}

.focus-screen.active {
  opacity: 1;
  pointer-events: auto;
}

/* ── Exit Button (top-right) ── */

.focus-exit-btn {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  color: var(--focus-text-muted);
  font-size: 1rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  z-index: 10;
}

.focus-exit-btn:hover {
  color: var(--focus-text);
  border-color: rgba(255, 255, 255, 0.4);
}

/* ── Setup Headings ── */

.focus-heading {
  color: var(--focus-text);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 2rem;
  text-align: center;
}

/* ── Setup Cards ── */

.focus-cards {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.focus-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 2rem;
  background: var(--focus-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: var(--focus-text);
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s;
  min-width: 160px;
}

.focus-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.focus-card.selected {
  border-color: var(--primary);
  background: rgba(91, 108, 240, 0.15);
}

.focus-card i {
  font-size: 1.5rem;
  opacity: 0.8;
}

.focus-card__title {
  font-size: 1rem;
  font-weight: 600;
}

.focus-card__subtitle {
  font-size: 0.8rem;
  color: var(--focus-text-muted);
}

/* ── Task List (slides down) ── */

.focus-task-list {
  margin-top: 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 400ms ease-out, opacity 400ms ease;
  opacity: 0;
  width: 100%;
  max-width: 400px;
}

.focus-task-list.open {
  max-height: 320px;
  opacity: 1;
  overflow-y: auto;
}

.focus-task-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
  color: var(--focus-text);
}

.focus-task-item:hover {
  background: rgba(255, 255, 255, 0.08);
}

.focus-task-item__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.focus-task-item__title {
  flex: 1;
  font-size: 0.9rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.focus-task-item__duration {
  font-size: 0.75rem;
  color: var(--focus-text-muted);
  flex-shrink: 0;
}

/* ── Rhythm Cards ── */

.focus-rhythm-cards {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 700px;
  margin: 0 auto;
}

.focus-rhythm-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 1rem 1.5rem;
  background: var(--focus-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: var(--focus-text);
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s;
  min-width: 150px;
}

.focus-rhythm-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.focus-rhythm-card__name {
  font-size: 1rem;
  font-weight: 600;
}

.focus-rhythm-card__desc {
  font-size: 0.8rem;
  color: var(--focus-text-muted);
}

.focus-heading-context {
  display: block;
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--focus-text-muted);
  margin-top: 0.35rem;
}

.focus-rhythm-card--recommended {
  border-color: var(--primary);
  position: relative;
}

.focus-rhythm-card__badge {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--primary);
  border-radius: 999px;
  margin-bottom: 0.25rem;
}

.focus-rhythm-card__sessions {
  font-size: 0.75rem;
  color: var(--focus-text-muted);
  margin-top: 0.25rem;
}

.focus-rhythm-cards--secondary {
  margin-top: 1.5rem;
  opacity: 0.7;
}

.focus-rhythm-cards--secondary .focus-rhythm-card {
  padding: 1rem 1.5rem;
  min-width: 130px;
}

/* ── Active Session ── */

.focus-timer-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.focus-timer-svg {
  width: 420px;
  height: 420px;
}

.focus-timer-ring-track {
  fill: none;
  stroke: var(--focus-ring-track);
  stroke-width: 4;
}

.focus-timer-ring-progress {
  fill: none;
  stroke: var(--focus-ring-active);
  stroke-width: 4;
  stroke-linecap: round;
  transform: rotate(-90deg);
  transform-origin: center;
  transition: stroke 0.6s ease;
}

.focus-timer-ring-progress.warning {
  stroke: var(--focus-ring-warning);
}

.focus-timer-ring-progress.overtime {
  stroke: var(--focus-ring-warning);
}

.focus-timer-ring-progress.break-ring {
  stroke: var(--focus-ring-break);
}

.focus-timer-digits {
  font-family: 'Courier New', monospace;
  font-size: 3.2rem;
  font-weight: 700;
  fill: var(--focus-text);
  text-anchor: middle;
  dominant-baseline: central;
}

.focus-timer-task {
  font-size: 1rem;
  color: var(--focus-text-muted);
  text-align: center;
  max-width: 420px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 0.25rem;
}

.focus-timer-schedule {
  font-size: 0.85rem;
  color: var(--focus-text-subtle);
  text-align: center;
  margin-top: 0.25rem;
}

.focus-timer-schedule span {
  color: var(--focus-text-muted);
  font-weight: 600;
}

/* ── Bottom Control Bar ── */

.focus-controls {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--focus-surface);
  border-radius: 40px;
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 10;
}

.focus-controls.visible {
  opacity: 1;
}

.focus-controls button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  border-radius: 50%;
  color: var(--focus-text);
  font-size: 1.1rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.focus-controls button:hover {
  background: rgba(255, 255, 255, 0.1);
}

.focus-controls button.end-btn:hover {
  color: #ef4444;
}

/* ── Sidebar ── */

.focus-sidebar-handle {
  position: fixed;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--focus-surface);
  border-radius: 0 8px 8px 0;
  color: var(--focus-text-subtle);
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  z-index: 11;
  border: none;
  font-size: 0.75rem;
}

.focus-sidebar-handle:hover {
  color: var(--focus-text);
  background: rgba(255, 255, 255, 0.08);
}

.focus-sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 280px;
  background: var(--focus-bg);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  transform: translateX(-100%);
  transition: transform 300ms ease;
  z-index: 12;
  padding: 1.5rem;
  overflow-y: auto;
}

.focus-sidebar.open {
  transform: translateX(0);
}

.focus-sidebar__heading {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--focus-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.focus-sidebar__current {
  padding: 0.75rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  margin-bottom: 1.5rem;
  border-left: 3px solid var(--primary);
}

.focus-sidebar__current-label {
  font-size: 0.65rem;
  color: var(--focus-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.focus-sidebar__current-title {
  font-size: 0.9rem;
  color: var(--focus-text);
  font-weight: 500;
}

.focus-sidebar__task {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s;
  color: var(--focus-text);
}

.focus-sidebar__task:hover {
  background: rgba(255, 255, 255, 0.06);
}

.focus-sidebar__task-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.focus-sidebar__task-title {
  flex: 1;
  font-size: 0.85rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.focus-sidebar__task-dur {
  font-size: 0.7rem;
  color: var(--focus-text-muted);
}

.focus-sidebar-backdrop {
  position: fixed;
  inset: 0;
  z-index: 11;
  display: none;
}

.focus-sidebar-backdrop.active {
  display: block;
}

/* ── Overtime Toast ── */

.focus-toast {
  position: fixed;
  bottom: 5rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 0.75rem 1.25rem;
  background: var(--focus-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: var(--focus-text);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  transition: transform 400ms ease, opacity 400ms ease;
  z-index: 10;
  white-space: nowrap;
}

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

.focus-toast__break {
  padding: 0.35rem 0.85rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
}

.focus-toast__break:hover {
  background: var(--primary-strong);
}

.focus-toast__close {
  background: none;
  border: none;
  color: var(--focus-text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0;
}

.focus-toast__close:hover {
  color: var(--focus-text);
}

/* ── Break Screen ── */

.focus-break {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  transition: opacity 0.3s ease;
}

.focus-break__icon {
  font-size: 2rem;
  color: var(--focus-text-muted);
}

.focus-break__heading {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--focus-text);
}

.focus-break__tip {
  font-size: 0.85rem;
  color: var(--focus-text-muted);
  max-width: 360px;
  text-align: center;
  line-height: 1.5;
}

.focus-break__timer-svg {
  width: 200px;
  height: 200px;
}

.focus-break__actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.focus-break__btn {
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  font-family: inherit;
}

.focus-break__btn--primary {
  background: var(--primary);
  color: var(--focus-text);
  border: none;
}

.focus-break__btn--primary:hover {
  background: var(--primary-strong);
}

.focus-break__btn--secondary {
  background: none;
  color: var(--focus-text-muted);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.focus-break__btn--secondary:hover {
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--focus-text);
}

/* ── Summary Card ── */

.focus-summary-backdrop {
  position: absolute;
  inset: 0;
  background: var(--focus-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 300ms ease;
}

.focus-summary-backdrop.visible {
  opacity: 1;
}

.focus-summary {
  text-align: center;
  max-width: 440px;
  width: 90%;
  transform: scale(0.9);
  transition: transform 300ms ease;
}

.focus-summary-backdrop.visible .focus-summary {
  transform: scale(1);
}

.focus-summary__icon {
  font-size: 3.5rem;
  color: #10b981;
  margin-bottom: 1rem;
}

.focus-summary__heading {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--focus-text);
  margin-bottom: 0.75rem;
}

.focus-summary__message {
  font-size: 0.9rem;
  color: var(--focus-text-muted);
  margin-bottom: 1.25rem;
  font-style: italic;
  line-height: 1.5;
  max-width: 300px;
  margin-left: auto;
  margin-right: auto;
}

.focus-summary__time {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--focus-text);
  margin-bottom: 0.25rem;
  font-family: 'Courier New', monospace;
  letter-spacing: 0.02em;
}

.focus-summary__task {
  font-size: 0.9rem;
  color: var(--focus-text-muted);
  margin-bottom: 2.5rem;
}

.focus-summary__actions {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  max-width: 280px;
  margin: 0 auto;
}

.focus-summary__btn {
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
  font-family: inherit;
  width: 100%;
}

.focus-summary__btn:hover {
  transform: translateY(-1px);
}

.focus-summary__btn--next {
  background: #10b981;
  color: white;
  border: none;
}

.focus-summary__btn--next:hover {
  background: #059669;
}

.focus-summary__btn--primary {
  background: var(--primary);
  color: white;
  border: none;
}

.focus-summary__btn--primary:hover {
  background: var(--primary-strong);
}

.focus-summary__btn--secondary {
  background: none;
  color: var(--focus-text-muted);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.focus-summary__btn--secondary:hover {
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--focus-text);
}

/* ── Resume Prompt ── */

.focus-resume-backdrop {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.focus-resume {
  text-align: center;
  max-width: 400px;
  width: 90%;
}

.focus-resume__icon {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.focus-resume__heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--focus-text);
  margin-bottom: 1.25rem;
}

.focus-resume__details {
  margin-bottom: 2rem;
}

.focus-resume__task {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--focus-text);
  margin-bottom: 0.5rem;
}

.focus-resume__worked,
.focus-resume__session {
  font-size: 0.85rem;
  color: var(--focus-text-muted);
  margin-bottom: 0.25rem;
}

.focus-resume__remaining {
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 500;
  margin-top: 0.5rem;
}

.focus-resume__actions {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  max-width: 260px;
  margin: 0 auto;
}

/* ── Custom Time Input ── */

.focus-custom-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
  max-width: 320px;
  width: 100%;
}

.focus-custom-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
}

.focus-custom-label {
  font-size: 0.8rem;
  color: var(--focus-text-muted);
  width: 50px;
  text-align: right;
  flex-shrink: 0;
}

.focus-custom-input {
  flex: 1;
  padding: 0.6rem 1rem;
  background: var(--focus-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--focus-text);
  font-size: 1rem;
  font-family: inherit;
  text-align: center;
  outline: none;
  transition: border-color 0.2s;
  -moz-appearance: textfield;
}

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

.focus-custom-input:focus {
  border-color: var(--primary);
}

.focus-custom-unit {
  font-size: 0.8rem;
  color: var(--focus-text-subtle);
  width: 30px;
}

.focus-custom-start {
  padding: 0.65rem 2rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s, transform 0.15s;
  margin-top: 0.5rem;
}

.focus-custom-start:hover {
  background: var(--primary-strong);
  transform: translateY(-1px);
}

/* ── Confirmation Dialog ── */

.focus-confirm {
  position: fixed;
  inset: 0;
  z-index: 13;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
}

.focus-confirm.active {
  display: flex;
}

.focus-confirm__card {
  background: var(--focus-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 1.5rem;
  max-width: 340px;
  width: 90%;
  text-align: center;
}

.focus-confirm__text {
  color: var(--focus-text);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.focus-confirm__actions {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
}

.focus-confirm__btn {
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s;
}

.focus-confirm__btn--yes {
  background: #ef4444;
  color: white;
  border: none;
}

.focus-confirm__btn--yes:hover {
  background: #dc2626;
}

.focus-confirm__btn--no {
  background: none;
  color: var(--focus-text-muted);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.focus-confirm__btn--no:hover {
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--focus-text);
}

/* ── Background Transition ── */

.focus-active-bg {
  position: absolute;
  inset: 0;
  background: var(--focus-bg);
  transition: background 600ms ease;
  z-index: -1;
}

.focus-active-bg.break-mode {
  background: var(--focus-bg-break);
}

/* ── Mobile ── */

@media (max-width: 600px) {
  .focus-cards,
  .focus-rhythm-cards {
    flex-direction: column;
    align-items: center;
  }

  .focus-card,
  .focus-rhythm-card {
    width: 100%;
    max-width: 280px;
  }

  .focus-timer-svg {
    width: 300px;
    height: 300px;
  }

  .focus-timer-digits {
    font-size: 3rem;
  }

  .focus-controls {
    opacity: 1 !important;
    bottom: 1.5rem;
  }

  .focus-sidebar {
    width: 100%;
  }

  .focus-break__timer-svg {
    width: 180px;
    height: 180px;
  }

  .focus-heading {
    font-size: 1.25rem;
    padding: 0 1rem;
  }

  .focus-task-list {
    max-width: 90%;
  }
}