body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    width: 100%;
    text-align: center;
}

.tabs {
    display: flex;
    justify-content: space-around;
    margin-bottom: 20px;
}

.tab {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    padding: 10px 20px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    color: white;
}

.tab:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.tab.active {
    background: rgba(255, 255, 255, 0.4);
}

.section {
    display: none;
    opacity: 0;
    transition: opacity 0.5s;
}

.section.active {
    display: block;
    opacity: 1;
}

.time-display {
    font-size: 3em;
    font-weight: bold;
    color: white;
    margin: 20px 0;
}

.controls {
    display: flex;
    justify-content: center;
    gap: 10px;
}

button {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    padding: 10px 20px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    color: white;
}

button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.inputs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

input {
    padding: 10px;
    border: none;
    border-radius: 5px;
    text-align: center;
    width: 60px;
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 5px;
    overflow: hidden;
    margin: 20px 0;
}

.progress {
    height: 100%;
    background: linear-gradient(90deg, #ff6b6b, #4ecdc4);
    width: 0%;
    transition: width 1s linear;
}

/* Blinking colon for clock */
#clock-display::after {
    content: '';
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Responsive */
@media (max-width: 480px) {
    .container {
        padding: 20px;
    }
    .time-display {
        font-size: 2em;
    }
}