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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: #f8f9fa;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    padding: 2rem;
}

.pomodoro {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
}

.timer {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto 2rem;
}

.progress-ring {
    transform: rotate(-90deg);
}

.time-display {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3.5rem;
    font-weight: 700;
    color: #2d3436;
}

.controls {
    margin-bottom: 2rem;
}

.btn {
    padding: 0.8rem 2rem;
    margin: 0 0.5rem;
    border: none;
    border-radius: 50px;
    background: #ff6b6b;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    background: #ff5252;
    transform: translateY(-2px);
}

.settings {
    border-top: 1px solid #eee;
    padding-top: 2rem;
    display: grid;
    gap: 1rem;
}

.setting {
    display: grid;
    gap: 0.5rem;
    text-align: left;
}

.setting label {
    color: #636e72;
    font-size: 0.9rem;
}

input[type="number"] {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    width: 100%;
}

input[type="color"] {
    width: 100%;
    height: 40px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.tasks {
    margin-top: 2rem;
    border-top: 1px solid #eee;
    padding-top: 2rem;
    text-align: left;
}

.task-input-container {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.task-input {
    flex: 1;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
}

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

.task-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem;
    background: #f8f9fa;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.task-item.completed {
    opacity: 0.6;
    text-decoration: line-through;
}

.task-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.task-text {
    flex: 1;
}

.delete-task {
    background: none;
    border: none;
    color: #ff6b6b;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0.2rem;
}

.delete-task:hover {
    color: #ff5252;
}