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

body {
    font-family: 'Georgia', serif;
    background: linear-gradient(135deg, #1a0f2e 0%, #2d1b4e 50%, #1a0f2e 100%);
    min-height: 100vh;
    color: #fff;
    overflow-x: hidden;
    position: relative;
}

/* Password Protection Screen */
.password-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a0f2e 0%, #2d1b4e 50%, #1a0f2e 100%);
    z-index: 10000;
}

.password-container {
    background: linear-gradient(145deg, #2d1b4e, #1a0f2e);
    padding: 50px 40px;
    border-radius: 20px;
    box-shadow: 0 0 50px rgba(255, 215, 0, 0.3);
    border: 2px solid #ffd700;
    text-align: center;
    max-width: 450px;
    width: 90%;
}

.password-title {
    font-size: 2.5em;
    color: #ffd700;
    margin-bottom: 15px;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
}

.password-subtitle {
    font-size: 1.2em;
    color: #90ee90;
    margin-bottom: 30px;
}

.password-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.password-input {
    padding: 15px 20px;
    font-size: 1.1em;
    border: 2px solid #ffd700;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    outline: none;
    transition: all 0.3s ease;
    font-family: 'Georgia', serif;
}

.password-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.password-input:focus {
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
    border-color: #90ee90;
}

.password-submit {
    padding: 15px 30px;
    font-size: 1.2em;
    font-weight: bold;
    background: linear-gradient(145deg, #006400, #228b22);
    color: #fff;
    border: 2px solid #90ee90;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Georgia', serif;
}

.password-submit:hover {
    background: linear-gradient(145deg, #228b22, #32cd32);
    box-shadow: 0 0 20px rgba(144, 238, 144, 0.6);
    transform: translateY(-2px);
}

.password-submit:active {
    transform: translateY(0);
}

.password-error {
    color: #ff6b6b;
    font-size: 1em;
    margin-top: 15px;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.calendar-content {
    position: relative;
}

/* Snowflakes Animation */
.snow-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

@keyframes snowfall {
    0% {
        transform: translateY(-10vh) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) translateX(100px);
        opacity: 0;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
    z-index: 2;
}

.title {
    text-align: center;
    font-size: 3.5em;
    margin-bottom: 50px;
    color: #ffd700;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.5),
                 0 0 40px rgba(255, 215, 0, 0.3);
    font-weight: bold;
    letter-spacing: 3px;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    padding: 20px;
}

.door {
    position: relative;
    aspect-ratio: 1;
    background: linear-gradient(145deg, #8b0000, #a52a2a);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5),
                inset 0 2px 4px rgba(255, 255, 255, 0.2);
    border: 3px solid #ffd700;
}

.door:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 12px 30px rgba(255, 215, 0, 0.4),
                inset 0 2px 4px rgba(255, 255, 255, 0.3);
}

/* Unlocked door styling */
.door.unlocked {
    background: linear-gradient(145deg, #006400, #228b22);
    border-color: #90ee90;
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5),
                    0 0 10px rgba(144, 238, 144, 0.5),
                    inset 0 2px 4px rgba(255, 255, 255, 0.2);
    }
    50% {
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5),
                    0 0 20px rgba(144, 238, 144, 0.8),
                    0 0 30px rgba(144, 238, 144, 0.6),
                    inset 0 2px 4px rgba(255, 255, 255, 0.2);
    }
}

/* Locked door styling */
.door.locked {
    background: linear-gradient(145deg, #4a4a4a, #696969);
    border-color: #888;
    cursor: not-allowed;
    opacity: 0.7;
}

.door.locked:hover {
    transform: none;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5),
                inset 0 2px 4px rgba(255, 255, 255, 0.2);
}

.door-number {
    color: #ffd700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    position: relative;
    z-index: 2;
}

.door.locked .door-number {
    color: #ccc;
}

/* Lock icon for locked doors */
.door.locked::before {
    content: "🔒";
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 0.5em;
    opacity: 0.8;
}

/* Star icon for unlocked doors */
.door.unlocked::before {
    content: "⭐";
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 0.5em;
    animation: twinkle 1.5s ease-in-out infinite;
}

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

/* Overlay Modal */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.overlay.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.overlay-content {
    background: linear-gradient(145deg, #2d1b4e, #1a0f2e);
    padding: 40px;
    border-radius: 20px;
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: 0 0 50px rgba(255, 215, 0, 0.3);
    border: 2px solid #ffd700;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    color: #ffd700;
    font-size: 2em;
    cursor: pointer;
    transition: all 0.3s ease;
    line-height: 1;
}

.close-btn:hover {
    color: #fff;
    transform: rotate(90deg);
}

.door-title {
    text-align: center;
    color: #ffd700;
    margin-bottom: 30px;
    font-size: 2em;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.audio-player {
    margin: 30px 0;
}

.audio-player audio {
    width: 100%;
    outline: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.enjoy-message {
    text-align: center;
    font-size: 1.2em;
    color: #90ee90;
    margin-top: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .title {
        font-size: 2.5em;
    }
    
    .calendar-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        gap: 15px;
    }
    
    .door {
        font-size: 2em;
    }
    
    .overlay-content {
        padding: 30px 20px;
    }
    
    .door-title {
        font-size: 1.5em;
    }
}