* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #4f4f4f 0%, #18604d 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    max-width: 600px;
    width: 100%;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 2em;
}

.timer-section {
    text-align: center;
    margin-bottom: 40px;
}

.timer-display {
    font-size: 2em;
    font-weight: bold;
    color: #18604d;
    margin: 20px 0;
    font-variant-numeric: tabular-nums;
}

.timer-label {
    font-size: 1.2em;
    color: #666;
    margin-bottom: 10px;
}

.session-info {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 20px 0;
    font-size: 0.9em;
    color: #666;
}

.current-task {
    background: #f0f0f0;
    padding: 15px;
    border-radius: 10px;
    margin: 20px 0;
    font-style: italic;
    color: #555;
}

.button-group {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

button {
    padding: 12px 24px;
    font-size: 1em;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn-primary {
    background: #18604d;
    color: white;
}

.btn-primary:hover {
    background: #18604d;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.btn-danger {
    background: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.task-section {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 2px solid #eee;
}

.task-section h2 {
    color: #333;
    margin-bottom: 20px;
}

.task-input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

input[type="text"] {
    flex: 1;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1em;
    transition: border-color 0.3s ease;
}

input[type="text"]:focus {
    outline: none;
    border-color: #18604d;
}

.task-list {
    list-style: none;
}

.task-item {
    background: #f8f9fa;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.task-item:hover {
    background: #e9ecef;
}

.task-item.selected {
    background: #667eea;
    color: white;
}

.task-item input[type="radio"] {
    cursor: pointer;
}

.task-text {
    flex: 1;
    cursor: pointer;
}

.delete-btn {
    background: #e74c3c;
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9em;
}

.delete-btn:hover {
    background: #c0392b;
}

.empty-state {
    text-align: center;
    color: #999;
    padding: 40px;
    font-style: italic;
}

.status-badge {
    display: inline-block;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: 600;
}

.status-focus {
    background: #18604d;
    color: white;
}

.status-rest {
    background: #27ae60;
    color: white;
}

.status-break {
    background: #f39c12;
    color: white;
}

/* Coffee Cup Styles */
.coffee-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 30px 0 20px 0;
}

.coffee-cup {
    position: relative;
    width: 120px;
    height: 140px;
    background: linear-gradient(to right, #fff 0%, #f5f5f5 100%);
    border: 4px solid #8B4513;
    border-radius: 0 0 10px 10px;
    overflow: hidden;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.1),
                0 5px 15px rgba(0,0,0,0.2);
}

.coffee-liquid {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, #6F4E37 0%, #3E2723 100%);
    transition: height 1s ease-out;
    border-radius: 0 0 6px 6px;
}

.coffee-liquid::before {
    content: '';
    position: absolute;
    top: -5px;
    left: 0;
    width: 100%;
    height: 10px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    animation: steam 3s ease-in-out infinite;
}

.coffee-handle {
    position: absolute;
    right: -40px;
    top: 30px;
    width: 45px;
    height: 70px;
    border: 5px solid #000000;
    border-left: none;
    border-radius: 0 50px 50px 0;
    background: transparent;
    box-shadow: inset -3px 0 5px rgba(0,0,0,0.2);
}

@keyframes steam {
    0%, 100% {
        opacity: 0.3;
        transform: translateY(0);
    }
    50% {
        opacity: 0.6;
        transform: translateY(-2px);
    }
}