/* Reset and Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --tomato-red: #e74c3c;
    --tomato-red-dark: #c0392b;
    --green: #27ae60;
    --green-dark: #1e8449;
    --blue: #3498db;
    --orange: #f39c12;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    text-align: center;
    padding: 2rem;
    max-width: 500px;
    width: 100%;
}

/* Header */
header h1 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--tomato-red);
    text-shadow: 0 0 10px rgba(231, 76, 60, 0.3);
}

/* Current Time Display */
.current-time-container {
    margin-bottom: 1.5rem;
}

.current-time {
    font-family: 'Courier New', Courier, monospace;
    font-size: 3.5rem;
    font-weight: bold;
    color: var(--text-primary);
    letter-spacing: 2px;
}

.sun-info {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.sun-icon {
    font-size: 1.2rem;
}

.sun-icon.night {
    filter: grayscale(1) brightness(0.7);
}

.sun-times {
    font-family: 'Courier New', Courier, monospace;
}

@media (max-width: 480px) {
    .current-time {
        font-size: 2.5rem;
    }
}

/* Phase Display */
.phase-display {
    margin-bottom: 1rem;
}

#phase-text {
    font-size: 1.4rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.phase-display.work #phase-text {
    color: var(--tomato-red);
}

.phase-display.short-break #phase-text {
    color: var(--green);
}

.phase-display.long-break #phase-text {
    color: var(--blue);
}

.phase-display.waiting #phase-text {
    color: var(--orange);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Break Message */
.break-message {
    min-height: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.break-message.visible {
    opacity: 1;
}

/* Timer Display */
.timer-display {
    margin-bottom: 2rem;
}

#timer {
    font-family: 'Courier New', Courier, monospace;
    font-size: 6rem;
    font-weight: bold;
    color: var(--text-primary);
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

@media (max-width: 480px) {
    #timer {
        font-size: 4rem;
    }
}

/* Tomato Progress */
.tomato-progress {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tomato {
    font-size: 2rem;
    transition: all 0.3s ease;
}

.tomato::before {
    content: '🍅';
    opacity: 1;
}

.tomato.empty::before {
    content: '⚪';
    opacity: 0.4;
}

/* Button Group */
.button-group {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

/* Main Button */
.btn-main {
    background: linear-gradient(135deg, var(--tomato-red) 0%, var(--tomato-red-dark) 100%);
    color: white;
    border: none;
    padding: 1rem 3rem;
    font-size: 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4);
}

.btn-main:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.5);
}

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

.btn-main.running {
    background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
    box-shadow: 0 4px 15px rgba(39, 174, 96, 0.4);
}

.btn-main.running:hover {
    box-shadow: 0 6px 20px rgba(39, 174, 96, 0.5);
}

.btn-main.paused {
    background: linear-gradient(135deg, var(--orange) 0%, #e67e22 100%);
    box-shadow: 0 4px 15px rgba(243, 156, 18, 0.4);
}

.btn-main.paused:hover {
    box-shadow: 0 6px 20px rgba(243, 156, 18, 0.5);
}

/* Pause Button */
.btn-pause {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    color: white;
    border: none;
    padding: 1rem 1.5rem;
    font-size: 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.btn-pause:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

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

/* Stats */
.stats {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
}

#total-time {
    font-family: 'Courier New', Courier, monospace;
    color: var(--text-primary);
}

/* Settings Button */
.btn-settings {
    background: transparent;
    border: 1px solid var(--text-secondary);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-settings:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 10px;
    max-width: 400px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-content h2 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

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

.setting-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.setting-group input[type="number"],
.setting-group input[type="range"],
.setting-group select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--bg-tertiary);
    border-radius: 5px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
}

.setting-group input[type="number"]:focus,
.setting-group select:focus,
.setting-group textarea:focus {
    outline: none;
    border-color: var(--tomato-red);
}

.setting-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--bg-tertiary);
    border-radius: 5px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    resize: vertical;
    min-height: 60px;
}

.setting-group select {
    cursor: pointer;
}

.setting-group input[type="range"] {
    padding: 0;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
}

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

#volume-value {
    display: inline-block;
    margin-top: 0.5rem;
    color: var(--text-secondary);
}

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

.btn-save,
.btn-cancel {
    flex: 1;
    padding: 0.75rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.btn-save {
    background: var(--tomato-red);
    color: white;
}

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

.btn-cancel {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-cancel:hover {
    background: var(--bg-primary);
}