:root {
    --bg: #f5f5f7;
    --face: #ffffff;
    --hand: #1d1d1f;
    --shadow: rgba(0, 0, 0, 0.1);
    --accent: #007aff;
    --text: #1d1d1f;
    --control-bg: rgba(255, 255, 255, 0.8);
    --control-hover: rgba(255, 255, 255, 0.95);
    
    /* Modal input backgrounds for light mode */
    --input-bg: rgba(0, 0, 0, 0.05);
    --input-border: rgba(0, 0, 0, 0.15);
    --input-focus-shadow: rgba(0, 122, 255, 0.2);
    --select-bg: #ffffff;
    --select-option-bg: #ffffff;
    --select-option-text: #1d1d1f;
    
    --cell-size: clamp(14px, 3.5vmin, 42px);
    --gap: clamp(2px, 0.6vmin, 8px);
    --digit-gap: clamp(8px, 2vmin, 28px);
}

[data-theme="dark"] {
    --bg: #1d1d1f;
    --face: #2c2c2e;
    --hand: #f5f5f7;
    --shadow: rgba(0, 0, 0, 0.5);
    --accent: #0a84ff;
    --text: #f5f5f7;
    --control-bg: rgba(44, 44, 46, 0.8);
    --control-hover: rgba(44, 44, 46, 0.95);
    
    /* Modal input backgrounds for dark mode */
    --input-bg: rgba(255, 255, 255, 0.05);
    --input-border: rgba(255, 255, 255, 0.1);
    --input-focus-shadow: rgba(10, 132, 255, 0.3);
    --select-bg: rgba(44, 44, 46, 0.95);
    --select-option-bg: #2c2c2e;
    --select-option-text: #f5f5f7;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg);
    color: var(--text);
    transition: background-color 0.6s ease, color 0.6s ease;
    overflow: hidden;
    user-select: none;
}

#app {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.controls {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1000;
    padding: clamp(8px, 2vmin, 16px);
    display: flex;
    gap: clamp(8px, 2vmin, 16px);
    flex-wrap: wrap;
    justify-content: flex-end;
    backdrop-filter: blur(10px);
}

.control-group {
    display: flex;
    gap: clamp(4px, 1vmin, 8px);
    align-items: center;
}

.control-btn {
    width: clamp(32px, 6vmin, 48px);
    height: clamp(32px, 6vmin, 48px);
    border: none;
    border-radius: 50%;
    background: var(--control-bg);
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(16px, 3vmin, 24px);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
}

.icon-svg {
    width: 60%;
    height: 60%;
    fill: var(--text);
    transition: all 0.3s ease;
}

[data-theme="light"] .day-icon {
    display: none;
}

[data-theme="light"] .night-icon {
    display: block;
}

[data-theme="dark"] .day-icon {
    display: block;
}

/* Pomodoro Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(5px);
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg);
    padding: 2rem;
    border-radius: 1rem;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.modal-content h2 {
    margin: 0 0 1.5rem 0;
    color: var(--accent);
}

.setting-group {
    margin-bottom: 1.5rem;
}

.setting-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.setting-group input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--input-border);
    border-radius: 3px;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

.setting-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

.setting-group input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.time-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.time-inputs input[type="number"] {
    flex: 1;
    padding: 0.75rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
    color: var(--text);
    font-size: 1.2rem;
    text-align: center;
    font-weight: 600;
}

.time-separator {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent);
}

.setting-group input[type="number"],
.setting-group input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
    color: var(--text);
    font-size: 1rem;
}

.setting-group input[type="number"]:focus,
.setting-group input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--input-focus-shadow);
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.modal-buttons button {
    flex: 1;
    padding: 1rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.primary-btn {
    background: var(--accent);
    color: #ffffff;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 122, 255, 0.3);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text);
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Custom scrollbar for modal */
.modal-content::-webkit-scrollbar {
    width: 8px;
}

.modal-content::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.modal-content::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 4px;
}

.modal-content::-webkit-scrollbar-thumb:hover {
    background: var(--hand);
}

/* Firefox scrollbar */
.modal-content {
    scrollbar-width: thin;
    scrollbar-color: var(--accent) rgba(255, 255, 255, 0.05);
}

/* Hide default number input spinners */
.time-inputs input[type="number"]::-webkit-inner-spin-button,
.time-inputs input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.time-inputs input[type="number"] {
    appearance: textfield;
    -moz-appearance: textfield;
}

/* Custom checkbox styling */
.setting-group input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.05);
    cursor: pointer;
    position: relative;
    margin-right: 0.5rem;
    vertical-align: middle;
    transition: all 0.2s;
}

/* Make unchecked checkboxes more visible in light mode */
[data-theme="light"] .setting-group input[type="checkbox"]:not(:checked) {
    background: #e0e0e0;
    border-color: #bdbdbd;
}

.setting-group input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
}

.setting-group input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
    font-weight: bold;
}

.setting-group input[type="checkbox"]:hover {
    border-color: var(--accent);
}

/* Custom dropdown styling */
.setting-group select {
    width: 100%;
    padding: 0.75rem;
    background: var(--select-bg);
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
    color: var(--text);
    font-size: 1rem;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23007aff' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 12px;
    padding-right: 2.5rem;
}

.setting-group select option {
    background: var(--select-option-bg);
    color: var(--select-option-text);
    padding: 0.5rem;
}

.setting-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--input-focus-shadow);
}

.setting-group select:hover {
    border-color: var(--accent);
}

/* Sound controls group with play button */
.sound-controls {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
}

.sound-controls select {
    flex: 1;
}

.sound-select-wrapper {
    flex: 1;
    position: relative;
}

/* Sound button grid */
.sound-button-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.5rem;
    max-height: 300px;
    overflow-y: auto;
    padding: 0.5rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
}

.sound-button-grid::-webkit-scrollbar {
    width: 6px;
}

.sound-button-grid::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.sound-button-grid::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 3px;
}

.sound-category-label {
    grid-column: 1 / -1;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    margin-top: 0.5rem;
    margin-bottom: 0.25rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--input-border);
}

.sound-category-label:first-child {
    margin-top: 0;
}

.sound-option-btn {
    padding: 0.6rem 0.75rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 0.4rem;
    color: var(--text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.15s;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sound-option-btn:hover {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.sound-option-btn.selected {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
    font-weight: 600;
}

.sound-option-btn:active {
    transform: translateY(0);
}

.icon-btn {
    padding: 0.75rem 1rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
    color: var(--accent);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
}

.icon-btn:hover {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
    transform: scale(1.05);
}

.icon-btn:active {
    transform: scale(0.95);
}

/* Color picker styling */
.color-group input[type="color"] {
    width: 100%;
    height: 50px;
    padding: 0.5rem;
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.color-group input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
    border-radius: 0.3rem;
}

.color-group input[type="color"]::-webkit-color-swatch {
    border: 3px solid var(--input-bg);
    border-radius: 0.3rem;
}

.color-group input[type="color"]::-moz-color-swatch {
    border: 3px solid var(--input-bg);
    border-radius: 0.3rem;
}

.color-group input[type="color"]:hover {
    border-color: var(--accent);
    transform: scale(1.02);
}

.color-group input[type="color"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--input-focus-shadow);
}

/* Cycle goals inputs */
#cycleGoalsContainer {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.cycle-goal-input {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cycle-goal-input label {
    min-width: 70px;
    font-weight: 500;
    margin-bottom: 0;
}

.cycle-goal-input input {
    flex: 1;
    padding: 0.75rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
    color: var(--text);
    font-size: 0.95rem;
}

.cycle-goal-input input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--input-focus-shadow);
}

/* Pomodoro Title */
.pomodoro-title {
    text-align: center;
    font-size: clamp(1.5rem, 4vw, 3rem);
    font-weight: bold;
    margin-bottom: 2rem;
    transition: opacity 0.5s, color 0.3s;
}

.pomodoro-title.hidden {
    opacity: 0;
    pointer-events: none;
    height: 0;
    margin: 0;
}

/* Pomodoro hand color variable */
:root {
    --pomodoro-hand-color: var(--hand);
}

/* Pomodoro Control Panel */
.pomodoro-controls {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    transition: opacity 0.3s;
}

.pomodoro-controls.hidden {
    display: none;
}

.control-panel {
  background: var(--bg);
  padding: 1rem 2rem;
  border-radius: 1rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  min-width: 350px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.progress-fill {
    height: 100%;
    background: var(--pomodoro-hand-color);
    transition: width 0.3s ease;
    width: 100%;
}

/* Removed .time-display - no longer showing duplicate countdown */.control-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

.control-btn-panel {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
    background: var(--input-bg);
    color: var(--text);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s;
    white-space: nowrap;
}

.control-btn-panel:hover {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
    transform: translateY(-2px);
}

.control-btn-panel:active {
    transform: translateY(0);
}

[data-theme="dark"] .night-icon {
    display: none;
}

.control-btn:hover {
    background: var(--control-hover);
    transform: scale(1.1);
}

.control-btn:active {
    transform: scale(0.95);
}

.control-btn.active {
    background: var(--accent);
    color: white;
}

.control-btn.active .icon-svg {
    fill: white;
}

/* Heart button styling */
.heart-btn {
    background: var(--control-bg);
    transition: all 0.3s ease;
}

.heart-btn i {
    color: #ff69b4;
    font-size: clamp(16px, 3vmin, 24px);
}

.heart-btn.active {
    background: #ff69b4;
}

.heart-btn.active i {
    color: var(--control-bg);
}

.heart-btn.hidden {
    display: none;
}

@keyframes unlockCelebrate {
    0%, 100% { transform: scale(1); }
    25% { transform: scale(1.3) rotate(-15deg); }
    50% { transform: scale(1.3) rotate(15deg); }
    75% { transform: scale(1.3) rotate(-15deg); }
}

.heart-btn.unlock-celebrate {
    animation: unlockCelebrate 0.6s ease;
}

/* Heart unlock message popup */
.heart-unlock-message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: bold;
    color: #ff69b4;
    text-align: center;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.5s ease;
    text-shadow: 
        0 0 10px rgba(255, 105, 180, 0.5),
        0 0 20px rgba(255, 105, 180, 0.3),
        0 4px 8px rgba(0, 0, 0, 0.3);
    pointer-events: none;
    padding: 2rem;
    max-width: 90vw;
    animation: heartPulse 2s ease-in-out infinite;
}

.heart-unlock-message.visible {
    opacity: 1;
}

@keyframes heartPulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.05);
    }
}

/* Time of day button styling */
.time-of-day-btn {
    transition: all 0.3s ease;
}

.time-of-day-btn i {
    color: var(--accent);
    font-size: clamp(16px, 3vmin, 24px);
}

.time-of-day-btn.hidden {
    display: none;
}

/* Emoji popup styling */
.emoji-popup {
    position: fixed;
    font-size: 3rem;
    cursor: pointer;
    user-select: none;
    z-index: 5000;
    opacity: 0;
    transform: scale(0.5) rotate(0deg);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
    animation: float 3s ease-in-out infinite;
}

.emoji-popup.visible {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.emoji-popup:hover {
    transform: scale(1.2) rotate(10deg);
}

.emoji-popup.popping {
    animation: pop 0.3s ease forwards;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-10px) rotate(5deg);
    }
}

@keyframes pop {
    0% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
    50% {
        transform: scale(1.5) rotate(180deg);
        opacity: 0.8;
    }
    100% {
        transform: scale(0) rotate(360deg);
        opacity: 0;
    }
}

/* Tasks Panel */
.tasks-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: min(400px, 90vw);
    height: 100vh;
    background: var(--bg);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
    z-index: 8000;
    transform: translateX(0);
    transition: transform 0.3s ease;
    overflow: hidden;
}

.tasks-panel.hidden {
    transform: translateX(100%);
}

.tasks-content {
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    overflow-y: auto;
}

.tasks-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.tasks-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--accent);
}

.close-tasks-btn {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background 0.2s;
}

.close-tasks-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.task-input-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.task-input-group input {
    flex: 1;
    padding: 0.75rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
    color: var(--text);
    font-size: 1rem;
}

.task-input-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--input-focus-shadow);
}

.add-task-btn {
    padding: 0.75rem 1rem;
    background: var(--accent);
    border: none;
    border-radius: 0.5rem;
    color: white;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
}

.add-task-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.add-task-btn:active {
    transform: scale(0.95);
}

.tasks-sections {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
}

.task-section h3 {
    font-size: 1.1rem;
    color: var(--accent);
    margin: 0 0 0.75rem 0;
    border-bottom: 2px solid var(--input-border);
    padding-bottom: 0.5rem;
}

.task-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.task-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.task-item:hover {
    border-color: var(--accent);
    transform: translateX(4px);
}

.task-text {
    flex: 1;
    color: var(--text);
    word-break: break-word;
}

.task-actions {
    display: flex;
    gap: 0.25rem;
    margin-left: 0.5rem;
}

.task-action-btn {
    background: none;
    border: none;
    color: var(--text);
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.9rem;
    transition: all 0.2s;
    opacity: 0.6;
}

.task-action-btn:hover {
    opacity: 1;
    background: var(--accent);
    color: white;
}

.empty-task-message {
    text-align: center;
    color: var(--text);
    opacity: 0.5;
    padding: 1rem;
    font-style: italic;
}

/* Statistics Modal */
.stats-modal-content {
    max-width: 600px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.stat-card {
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.stat-card-highlight {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.stat-card-highlight .stat-value,
.stat-card-highlight .stat-label {
    color: white;
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent);
    margin: 0.5rem 0;
}

.stat-card-highlight .stat-value {
    color: white;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text);
    opacity: 0.8;
}

.timezone-btn {
    padding: clamp(8px, 2vmin, 12px) clamp(12px, 3vmin, 20px);
    border: none;
    border-radius: clamp(8px, 2vmin, 16px);
    background: var(--control-bg);
    color: var(--text);
    font-size: clamp(11px, 2.2vmin, 15px);
    font-weight: 500;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    letter-spacing: 0.02em;
}

.timezone-btn:hover {
    background: var(--control-hover);
    transform: translateY(-1px);
}

.timezone-btn:active {
    transform: translateY(0);
}

#timezoneDisplay {
    display: block;
}

.lock-btn {
    position: fixed;
    bottom: clamp(16px, 4vmin, 32px);
    right: clamp(16px, 4vmin, 32px);
    width: clamp(48px, 10vmin, 64px);
    height: clamp(48px, 10vmin, 64px);
    border: none;
    border-radius: 50%;
    background: var(--control-bg);
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    transition: opacity 0.5s ease, transform 0.3s ease;
    z-index: 2000;
}

.lock-btn:hover {
    transform: scale(1.1);
}

.lock-btn:active {
    transform: scale(0.95);
}

.lock-btn.hidden {
    opacity: 0;
    pointer-events: none;
}

.lock-btn.locked .unlock-icon {
    display: none;
}

.lock-btn.locked .lock-icon {
    display: block;
}

.lock-btn:not(.locked) .lock-icon {
    display: none;
}

.lock-btn:not(.locked) .unlock-icon {
    display: block;
}

body.fullscreen-mode {
    overflow: hidden;
}

body.fullscreen-mode .controls {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

body.fullscreen-mode #clockContainer {
    width: 100vw;
    height: 100vh;
    padding: 0;
    touch-action: none;
}

body.fullscreen-mode.unlocked #clockContainer {
    touch-action: manipulation;
    cursor: move;
}

body.fullscreen-mode.locked #clockContainer {
    touch-action: none;
    cursor: default;
}

#clockContainer {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: clamp(16px, 4vmin, 48px);
    position: relative;
}

#confettiCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 9999;
}

#clockWrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(16px, 3vmin, 32px);
    transition: transform 0.1s ease-out;
}

#clock {
    display: flex;
    gap: calc(var(--digit-gap) * 2);
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    max-width: 90vw;
    width: fit-content;
    margin: 0 auto;
}

/* Center the 4 digits better in Pomodoro mode */
body.pomodoro-mode #clock {
    gap: calc(var(--digit-gap) * 1.5);
    justify-content: center;
    align-items: center;
    display: flex;
    width: 100%;
    margin: 0 auto;
}

/* When in Pomodoro mode (4 digits), hide last digit-pair (seconds) */
.digit-pair:nth-child(3) {
    transition: opacity 0.3s ease, width 0.3s ease, margin 0.3s ease;
}

body.pomodoro-mode .digit-pair:nth-child(3) {
    opacity: 0;
    width: 0;
    margin: 0;
    padding: 0;
    gap: 0;
    pointer-events: none;
    overflow: hidden;
    display: none;
}

.digit-pair {
    display: flex;
    gap: var(--digit-gap);
}

.digit {
    display: grid;
    grid-template-columns: repeat(4, var(--cell-size));
    grid-template-rows: repeat(6, var(--cell-size));
    gap: var(--gap);
    position: relative;
}

.cell {
    width: var(--cell-size);
    height: var(--cell-size);
    aspect-ratio: 1/1;
    border-radius: 50%;
    background: var(--face);
    box-shadow: 
        inset 0 1px 3px var(--shadow),
        0 2px 8px var(--shadow);
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    /* Force GPU acceleration and prevent rendering artifacts */
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    will-change: transform;
    /* Ensure proper clipping */
    isolation: isolate;
}

.hand {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50%;
    height: 2px;
    background: var(--hand);
    transform-origin: left center;
    transform: translateY(-50%) rotate(var(--deg, 0deg));
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s ease;
    border-radius: 0 2px 2px 0;
    will-change: transform;
    /* Prevent rendering artifacts */
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: translateY(-50%) rotate(var(--deg, 0deg)) translateZ(0);
}

/* Use pomodoro color in Pomodoro mode */
body.pomodoro-mode .hand {
    background: var(--pomodoro-hand-color);
}

.center-dot {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2px;
    height: 2px;
    background: var(--hand);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: background 0.3s ease;
    z-index: 2;
}

/* Use pomodoro color in Pomodoro mode */
body.pomodoro-mode .center-dot {
    background: var(--pomodoro-hand-color);
}

.digit:nth-child(5) .hand,
.digit:nth-child(6) .hand {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.digit:nth-child(1) .hand,
.digit:nth-child(2) .hand {
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.timezone-display {
    font-size: clamp(12px, 2.5vmin, 18px);
    opacity: 0.6;
    font-weight: 300;
    letter-spacing: 0.05em;
}

.theme-transitioning .hand {
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

@keyframes explode {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(var(--tx), var(--ty)) scale(1.2); }
    100% { transform: translate(0, 0) scale(1); }
}

.exploding .cell {
    animation: explode 1s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes spiral {
    0% { transform: translateY(-50%) rotate(var(--deg, 0deg)) rotate(0deg); }
    100% { transform: translateY(-50%) rotate(var(--deg, 0deg)) rotate(360deg); }
}

.spiraling .hand {
    animation: spiral 0.8s ease-in-out;
    transform-origin: left center;
}

.cascading .hand {
    transition-delay: var(--cascade-delay, 0s) !important;
}

@keyframes minuteJump {
    0% { transform: scale(1); }
    50% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

.minute-jump .cell {
    animation: minuteJump 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .control-btn:hover {
        transform: none;
    }
    
    .control-btn:active {
        transform: none;
    }
}

@media (max-width: 768px) {
    .controls {
        padding: 8px;
        gap: 8px;
    }
    
    .control-group {
        gap: 4px;
    }
}

@media (max-width: 480px) {
    #clock {
        gap: clamp(4px, 2vmin, 12px);
    }
    
    .digit {
        gap: clamp(1px, 0.3vmin, 3px);
    }
}

@media (min-width: 2560px) {
    :root {
        --cell-size: clamp(24px, 2vmin, 40px);
    }
}

.control-btn:focus-visible,
.timezone-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Pulsing background when waiting for user to continue */
body.waiting-for-start {
    animation: backgroundPulse 3s ease-in-out infinite;
    cursor: pointer;
}

@keyframes backgroundPulse {
    0%, 100% {
        background-color: var(--bg);
    }
    50% {
        background-color: color-mix(in srgb, var(--bg) 90%, var(--pomodoro-hand-color) 10%);
    }
}

.follow-active .cell {
    transition: transform 0.2s ease;
}