* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Playfair Display', serif;
}

body {
    background: #0d0c1d;
    color: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    overflow-x: hidden;
}

.parallax-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: url('https://images.unsplash.com/photo-1519681393784-d120267933ba?auto=format&fit=crop&w=800&q=60') no-repeat center/cover;
    z-index: -2;
    transform: scale(1.05);
    will-change: transform;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(13, 12, 29, 0.85), rgba(13, 12, 29, 0.9));
    z-index: -1;
}

.title {
    text-align: center;
    margin-bottom: 25px;
    width: 100%;
    max-width: 1200px;
}

h1 {
    font-size: 3.5em;
    color: #ff3366;
    text-shadow: 0 0 15px rgba(255, 51, 102, 0.7);
    font-weight: 700;
    letter-spacing: 1px;
    animation: pulseTitle 3s ease-in-out infinite;
}

.container {
    position: relative;
    max-width: 1100px;
    width: 90%;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 1;
    border: 1px solid rgba(255, 51, 102, 0.4);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s ease-out;
}

.main-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: 100%;
}

.image-container {
    flex: 0 0 auto;
}

.cover-image {
    width: 350px;
    height: 350px;
    object-fit: cover;
    border-radius: 16px;
    transition: transform 0.3s ease;
}

.cover-image:hover {
    transform: scale(1.03);
}

.password-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.password-hint {
    font-size: 1.8em;
    color: #f8f8f8;
    font-style: italic;
    text-align: center;
    font-weight: 500;
}

.hint {
    font-size: 0.7em;
    color: #ff99aa;
    margin-top: 0px;
    text-align: center;
}

.password-display {
    font-size: 1.3em;
    color: #ff3366;
    background: rgba(255, 51, 102, 0.15);
    padding: 10px;
    border-radius: 8px;
    border: 2px solid #ff3366;
    width: 220px;
    height: 45px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(255, 51, 102, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

.keyboard {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    max-width: 300px;
    margin: 0 auto;
}

.key {
    width: 65px;
    height: 65px;
    font-size: 1.9em;
    color: #fff;
    background: linear-gradient(135deg, #ff3366, #d81b60);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.2s ease;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    font-weight: 500;
}

.key:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 51, 102, 0.5);
    background: linear-gradient(135deg, #d81b60, #ff3366);
}

.key:active {
    transform: scale(0.98);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.enter-key {
    grid-column: span 3;
    width: auto;
    height: 55px;
    border-radius: 12px;
    background: linear-gradient(135deg, #f06292, #c2185b);
    font-size: 1.6em;
    font-family: 'Playfair Display', serif;
    padding: 0 25px;
    transition: all 0.2s ease;
}

.enter-key:hover {
    background: linear-gradient(135deg, #c2185b, #f06292);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(198, 40, 91, 0.5);
}

.enter-key:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(198, 40, 91, 0.4);
}

.error {
    color: #e53935;
    font-size: 0.95em;
    margin-top: 8px;
    display: none;
    animation: shake 0.3s ease-in-out;
}

@keyframes pulseTitle {
    0% { text-shadow: 0 0 10px rgba(255, 51, 102, 0.7); opacity: 0.95; }
    50% { text-shadow: 0 0 18px rgba(255, 51, 102, 0.9); opacity: 1; }
    100% { text-shadow: 0 0 10px rgba(255, 51, 102, 0.7); opacity: 0.95; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

@media (min-width: 768px) {
    .title {
        margin-bottom: 30px;
    }

    h1 {
        font-size: 4.5em;
    }

    .container {
        max-width: 1200px;
        padding: 40px;
        gap: 25px;
    }

    .main-content {
        flex-direction: row;
        gap: 50px;
        justify-content: center;
    }

    .cover-image {
        width: 380px;
        height: 380px;
    }

    .password-section {
        flex: 1;
        max-width: 600px;
    }

    .password-hint {
        font-size: 2.2em;
    }

    .hint {
        font-size: 0.85em;
    }

    .password-display {
        width: 260px;
        height: 50px;
        font-size: 1.6em;
        padding: 12px;
    }

    .keyboard {
        max-width: 360px;
        gap: 12px;
    }

    .key {
        width: 80px;
        height: 80px;
        font-size: 2.2em;
    }

    .enter-key {
        width: 180px;
        height: 60px;
        font-size: 1.8em;
    }

    .error {
        font-size: 1.1em;
    }
}

@media (max-width: 420px) {
    .title {
        margin-bottom: 12px;
    }

    h1 {
        font-size: 1.8em;
        animation: pulseTitleMobile 3.5s ease-in-out infinite; /* Mobile-specific animation */
    }

    .container {
        padding: 15px;
        max-width: 90%;
    }

    .cover-image {
        width: 170px;
        height: 170px;
    }

    .password-hint {
        font-size: 1.1em;
    }

    .hint {
        font-size: 0.6em;
    }

    .password-display {
        width: 170px;
        height: 27px;
        font-size: 1.1em;
        padding: 8px;
    }

    .keyboard {
        max-width: 260px;
        gap: 8px;
    }

    .key {
        width: 45px;
        height: 45px;
        font-size: 1.4em;
    }

    .enter-key {
    width: 120px;
    height: 35px;
    font-size: 1.2em;
    padding: 0 15px;
    margin: 0 auto;
    display: block; /* Asegura que se centre con margin auto */
}


    .error {
        font-size: 0.85em;
    }

    .parallax-bg {
        background-size: cover;
        transform: none;
    }
}

@keyframes pulseTitleMobile {
    0% { text-shadow: 0 0 10px rgba(255, 51, 102, 0.7); opacity: 0.95; }
    50% { text-shadow: 0 0 18px rgba(255, 51, 102, 0.9); opacity: 1; }
    100% { text-shadow: 0 0 10px rgba(255, 51, 102, 0.7); opacity: 0.95; }
}