body {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    transition: background-image 0.5s ease-in-out;
}

.content {
    position: relative;
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.content h2 {
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
    margin: 0 0 20px 0;
}

.timer-section {
    color: white;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
}

.timer-section p {
    margin: 0 0 10px 0;
}

.input-group {
    margin-top: 20px;
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.url-input {
    padding: 10px 15px;
    font-size: 14px;
    border: none;
    border-radius: 6px;
    width: 300px;
    max-width: 90vw;
    background: rgba(255,255,255,0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.set-bg-btn, .date-btn {
    padding: 10px 20px;
    font-size: 14px;
    background: rgba(0, 123, 186, 0.9);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    box-shadow: 0 3px 12px rgba(0,0,0,0.3);
    transition: background 0.3s;
}

.set-bg-btn:hover, .date-btn:hover {
    background: rgba(0, 123, 186, 1);
}

/* Date picker overlay styles */
.date-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.date-overlay input[type="datetime-local"] {
    position: relative;
    padding: 20px;
    font-size: 18px;
    border: 2px solid #007cba;
    border-radius: 8px;
    background: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.date-overlay button {
    padding: 12px 24px;
    font-size: 16px;
    background: #007cba;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    min-width: 80px;
}