:root {
  --pwt-red: #dc2626;
  --pwt-red-hover: #b91c1c;
  --pwt-red-light: rgba(220, 38, 38, 0.12);
  --pwt-red-dark: #991b1b;
  --pwt-green: #22c55e;
  --pwt-gray: #9ca3af;
  --pwt-radius: 16px;
}

[data-pwt-theme="light"] {
  --pwt-glass-bg: rgba(255, 255, 255, 0.55);
  --pwt-glass-border: rgba(255, 255, 255, 0.7);
  --pwt-glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
  --pwt-glass-hover: rgba(255, 255, 255, 0.75);
  --pwt-text: #1f2937;
  --pwt-text-muted: #6b7280;
  --pwt-border: rgba(0, 0, 0, 0.08);
  --pwt-tab-bg: rgba(0, 0, 0, 0.04);
  --pwt-input-bg: rgba(255, 255, 255, 0.7);
  --pwt-input-border: rgba(0, 0, 0, 0.12);
  --pwt-modal-bg: rgba(255, 255, 255, 0.92);
  --pwt-task-hover: rgba(0, 0, 0, 0.03);
  --pwt-task-active-bg: rgba(220, 38, 38, 0.07);
  --pwt-stats-bg: rgba(0, 0, 0, 0.03);
  --pwt-toast-bg: rgba(31, 41, 55, 0.9);
  --pwt-progress-bg: rgba(0, 0, 0, 0.07);
}

[data-pwt-theme="dark"] {
  --pwt-glass-bg: rgba(0, 0, 0, 0.4);
  --pwt-glass-border: rgba(255, 255, 255, 0.06);
  --pwt-glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  --pwt-glass-hover: rgba(255, 255, 255, 0.06);
  --pwt-text: #f3f4f6;
  --pwt-text-muted: #9ca3af;
  --pwt-border: rgba(255, 255, 255, 0.08);
  --pwt-tab-bg: rgba(255, 255, 255, 0.05);
  --pwt-input-bg: rgba(255, 255, 255, 0.06);
  --pwt-input-border: rgba(255, 255, 255, 0.12);
  --pwt-modal-bg: rgba(15, 15, 20, 0.92);
  --pwt-task-hover: rgba(255, 255, 255, 0.04);
  --pwt-task-active-bg: rgba(220, 38, 38, 0.12);
  --pwt-stats-bg: rgba(255, 255, 255, 0.03);
  --pwt-toast-bg: rgba(0, 0, 0, 0.85);
  --pwt-progress-bg: rgba(255, 255, 255, 0.08);
}

.pwt-wrapper {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--pwt-text);
  transition: color 0.3s;
}

.pwt-container {
  background: var(--pwt-glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--pwt-glass-border);
  border-radius: var(--pwt-radius);
  box-shadow: var(--pwt-glass-shadow);
  padding: 32px;
  text-align: center;
  position: relative;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.pwt-tabs {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin-bottom: 28px;
  background: var(--pwt-tab-bg);
  padding: 4px;
  border-radius: 999px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  transition: background 0.3s;
}

.pwt-tab {
  padding: 8px 20px;
  border: none;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  background: transparent;
  color: var(--pwt-text-muted);
  transition: all 0.25s;
}

.pwt-tab:hover {
  color: var(--pwt-text);
}

.pwt-tab.active {
  background: var(--pwt-red);
  color: #fff;
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.35);
}

.pwt-timer-wrap {
  position: relative;
  display: inline-block;
  margin: 20px auto 24px;
}

.pwt-timer-svg {
  transform: rotate(-90deg);
}

.pwt-timer-bg {
  fill: none;
  stroke: var(--pwt-progress-bg);
  stroke-width: 6;
  transition: stroke 0.3s;
}

.pwt-timer-progress {
  fill: none;
  stroke: var(--pwt-red);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 565.48;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.5s ease, stroke 0.3s;
  filter: drop-shadow(0 0 6px rgba(220, 38, 38, 0.3));
}

.pwt-timer-progress.break {
  stroke: var(--pwt-green);
  filter: drop-shadow(0 0 6px rgba(34, 197, 94, 0.3));
}

.pwt-timer-display {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.pwt-timer-time {
  font-size: 68px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -3px;
  color: var(--pwt-text);
  transition: color 0.3s;
}

.pwt-timer-label {
  font-size: 14px;
  color: var(--pwt-text-muted);
  margin-top: 6px;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: color 0.3s;
}

.pwt-btn-start {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 52px;
  border: none;
  border-radius: 999px;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  background: var(--pwt-red);
  color: #fff;
  box-shadow: 0 4px 20px rgba(220, 38, 38, 0.3);
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.pwt-btn-start:hover {
  background: var(--pwt-red-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(220, 38, 38, 0.4);
}

.pwt-btn-start:active {
  transform: translateY(0) scale(0.98);
}

.pwt-btn-start.running {
  background: var(--pwt-text);
  box-shadow: 0 4px 20px rgba(31, 41, 55, 0.2);
}

.pwt-btn-start.running:hover {
  opacity: 0.9;
  background: var(--pwt-text);
}

.pwt-top-bar {
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
}

.pwt-top-left {
  display: flex;
  gap: 6px;
  align-items: center;
}

.pwt-top-right {
  display: flex;
  gap: 6px;
  align-items: center;
}

.pwt-icon-btn {
  background: var(--pwt-glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--pwt-glass-border);
  border-radius: 8px;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 16px;
  color: var(--pwt-text-muted);
  transition: all 0.2s;
  padding: 0;
  line-height: 1;
}

.pwt-icon-btn:hover {
  color: var(--pwt-text);
  background: var(--pwt-glass-hover);
  border-color: var(--pwt-red);
}

.pwt-lang-btn {
  background: transparent;
  border: 1px solid var(--pwt-border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  color: var(--pwt-text-muted);
  transition: all 0.2s;
  letter-spacing: 0.5px;
}

.pwt-lang-btn:hover {
  border-color: var(--pwt-red);
  color: var(--pwt-red);
}

.pwt-lang-btn.active {
  background: var(--pwt-red);
  border-color: var(--pwt-red);
  color: #fff;
}

.pwt-tasks-section {
  margin-top: 24px;
  background: var(--pwt-glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--pwt-glass-border);
  border-radius: var(--pwt-radius);
  box-shadow: var(--pwt-glass-shadow);
  padding: 24px;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.pwt-tasks-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--pwt-border);
  transition: border-color 0.3s;
}

.pwt-tasks-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--pwt-text);
  transition: color 0.3s;
}

.pwt-tasks-count {
  font-size: 13px;
  color: var(--pwt-text-muted);
  transition: color 0.3s;
}

.pwt-add-task {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.pwt-add-task input {
  flex: 1;
  padding: 10px 16px;
  border: 1px dashed var(--pwt-input-border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  background: var(--pwt-input-bg);
  color: var(--pwt-text);
  transition: all 0.3s;
}

.pwt-add-task input::placeholder {
  color: var(--pwt-text-muted);
}

.pwt-add-task input:focus {
  border-color: var(--pwt-red);
  border-style: solid;
  background: var(--pwt-glass-hover);
}

.pwt-add-task select {
  padding: 10px;
  border: 1px solid var(--pwt-input-border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  background: var(--pwt-input-bg);
  color: var(--pwt-text);
  transition: all 0.3s;
}

.pwt-add-task select:focus {
  border-color: var(--pwt-red);
}

.pwt-add-task button {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  background: var(--pwt-red);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  white-space: nowrap;
}

.pwt-add-task button:hover {
  background: var(--pwt-red-hover);
}

.pwt-add-task button:active {
  transform: scale(0.97);
}

.pwt-task-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pwt-task-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  transition: background 0.2s;
  cursor: pointer;
}

.pwt-task-item:hover {
  background: var(--pwt-task-hover);
}

.pwt-task-item.active {
  background: var(--pwt-task-active-bg);
  border-left: 3px solid var(--pwt-red);
}

.pwt-task-check {
  width: 20px;
  height: 20px;
  border: 2px solid var(--pwt-border);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
}

.pwt-task-check:hover {
  border-color: var(--pwt-green);
}

.pwt-task-check.done {
  background: var(--pwt-green);
  border-color: var(--pwt-green);
}

.pwt-task-check.done::after {
  content: '✓';
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.pwt-task-title {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
  text-align: left;
  color: var(--pwt-text);
  transition: color 0.3s;
}

.pwt-task-title.done-text {
  text-decoration: line-through;
  color: var(--pwt-text-muted);
}

.pwt-task-pomos {
  display: flex;
  gap: 4px;
  align-items: center;
}

.pwt-pomo-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--pwt-border);
  transition: background 0.3s;
}

.pwt-pomo-dot.filled {
  background: var(--pwt-red);
}

.pwt-pomo-dot.done-dot {
  background: var(--pwt-green);
}

.pwt-task-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.2s;
}

.pwt-task-item:hover .pwt-task-actions {
  opacity: 1;
}

.pwt-task-actions button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--pwt-text-muted);
  font-size: 14px;
  padding: 4px 6px;
  border-radius: 4px;
  transition: all 0.2s;
}

.pwt-task-actions button:hover {
  color: var(--pwt-red);
  background: var(--pwt-task-active-bg);
}

.pwt-empty-tasks {
  text-align: center;
  padding: 32px 16px;
  color: var(--pwt-text-muted);
  font-size: 14px;
  transition: color 0.3s;
}

/* Modal */
.pwt-modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 99999;
  align-items: center;
  justify-content: center;
}

.pwt-modal-overlay.open {
  display: flex;
}

.pwt-modal {
  background: var(--pwt-modal-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--pwt-glass-border);
  border-radius: 16px;
  padding: 32px;
  width: 420px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
  position: relative;
  transition: background 0.3s;
}

.pwt-modal h2 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 24px;
  text-align: center;
  color: var(--pwt-text);
  transition: color 0.3s;
}

.pwt-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--pwt-text-muted);
  line-height: 1;
  transition: color 0.2s;
}

.pwt-modal-close:hover {
  color: var(--pwt-text);
}

.pwt-form-group {
  margin-bottom: 20px;
}

.pwt-form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--pwt-text);
  margin-bottom: 6px;
  transition: color 0.3s;
}

.pwt-form-group input[type="number"] {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--pwt-input-border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  box-sizing: border-box;
  background: var(--pwt-input-bg);
  color: var(--pwt-text);
  transition: all 0.3s;
}

.pwt-form-group input[type="number"]:focus {
  border-color: var(--pwt-red);
}

.pwt-form-group input[type="checkbox"] {
  accent-color: var(--pwt-red);
}

.pwt-form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--pwt-input-border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  background: var(--pwt-input-bg);
  color: var(--pwt-text);
  transition: all 0.3s;
}

.pwt-btn-save {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 8px;
  background: var(--pwt-red);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}

.pwt-btn-save:hover {
  background: var(--pwt-red-hover);
}

.pwt-btn-save:active {
  transform: scale(0.98);
}

/* Stats */
.pwt-stats {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-top: 20px;
  padding: 16px 24px;
  background: var(--pwt-stats-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 12px;
  transition: background 0.3s;
}

.pwt-stat-item {
  text-align: center;
}

.pwt-stat-number {
  font-size: 24px;
  font-weight: 700;
  color: var(--pwt-red);
}

.pwt-stat-label {
  font-size: 12px;
  color: var(--pwt-text-muted);
  margin-top: 2px;
  transition: color 0.3s;
}

/* Sound toggle */
.pwt-sound-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--pwt-text-muted);
  cursor: pointer;
  margin-top: 14px;
  transition: color 0.3s;
}

.pwt-sound-toggle:hover {
  color: var(--pwt-text);
}

/* Toast */
.pwt-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--pwt-toast-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #fff;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 99999;
  pointer-events: none;
}

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

/* Responsive */
@media (max-width: 640px) {
  .pwt-wrapper {
    padding: 12px;
  }

  .pwt-container {
    padding: 20px 16px;
  }

  .pwt-timer-time {
    font-size: 48px;
  }

  .pwt-btn-start {
    padding: 12px 36px;
    font-size: 18px;
  }

  .pwt-tasks-section {
    padding: 16px;
  }

  .pwt-add-task {
    flex-direction: column;
  }

  .pwt-modal {
    padding: 24px 20px;
  }

  .pwt-top-bar {
    top: 12px;
    left: 12px;
    right: 12px;
  }

  .pwt-stats {
    gap: 16px;
    padding: 12px 16px;
  }
}