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

        html, body {
            height: 100%;
            min-height: 100vh;
            overflow-x: hidden;
            overflow-y: auto;
        }

        body {
            background: #0d0c1d;
            color: #fff;
            overflow-x: hidden;
        }

        .parallax-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: url('https://images.unsplash.com/photo-1519681393784-d120267933ba') no-repeat center/cover;
            z-index: -2;
            transform: translateZ(-1px) scale(1.1);
        }

        .overlay-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(rgba(13, 12, 29, 0.8), rgba(13, 12, 29, 0.9));
            z-index: -1;
        }

        .main-container {
            position: relative;
            padding: 60px 20px;
            max-width: 1200px;
            margin: 0 auto;
            z-index: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .section-title {
    font-size: 3em;
    color: #ff4d6d;
    text-align: center;
    margin-bottom: 30px;
    text-shadow: 0 0 15px rgba(255, 77, 109, 0.5);
}

        .title {
            font-size: 7em;
            font-family: 'Tangerine', cursive;
            color: #ff4d6d;
            text-align: center;
            text-shadow: 0 0 20px rgba(255, 77, 109, 0.7);
            animation: glowTitle 4s ease-in-out infinite;
            margin-bottom: 40px;
        }

        .time-since-birth {
            text-align: center;
            margin: 40px 0;
            background: linear-gradient(135deg, rgba(255, 77, 109, 0.3), rgba(139, 0, 50, 0.3));
            backdrop-filter: blur(15px);
            padding: 40px;
            border-radius: 30px;
            box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6), inset 0 0 10px rgba(0, 0, 0, 0.2);
            border: 2px solid #ffd700;
            animation: fadeInUp 1s ease-out;
        }

        .time-title {
            font-size: 3em;
            color: #ff4d6d;
            text-shadow: 0 0 10px #ff4d6d;
            margin-bottom: 20px;
            font-style: italic;
        }

        .time-display {
            font-family: 'Orbitron', sans-serif;
            font-size: 2.75em;
            color: #ffd700;
            text-shadow: 0 0 20px #ffd700, 0 0 30px #ffd700;
            letter-spacing: 8px;
            font-weight: 700;
            padding: 15px 25px;
            border-radius: 12px;
            display: inline-block;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 100%;
        }

        .time-label {
            font-size: 1.3em;
            color: #f4f4f4;
            margin-top: 15px;
            font-style: italic;
            text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
        }

        .personalized-message {
            font-size: 1.5em;
            color: #f4f4f4;
            margin-top: 20px;
            font-style: italic;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        @keyframes glowTitle {
            0% { text-shadow: 0 0 10px #ff4d6d; }
            50% { text-shadow: 0 0 30px #ff4d6d, 0 0 40px #ff4d6d; }
            100% { text-shadow: 0 0 10px #ff4d6d; }
        }

        .intro {
            font-size: 1.8em;
            line-height: 1.6;
            max-width: 800px;
            margin: 0 auto 60px;
            background: rgba(255, 255, 255, 0.1);
            padding: 30px;
            border-radius: 15px;
            animation: fadeInUp 1.5s ease-out;
            text-align: center;
        }

        .quote-section {
            max-width: 700px;
            margin: 60px auto;
            font-size: 1.7em;
            font-style: italic;
            color: #f4f4f4;
            background: rgba(255, 77, 109, 0.15);
            padding: 25px;
            border-left: 5px solid #ff4d6d;
            animation: slideInLeft 1.5s ease-out;
        }

        .carousel {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            max-width: 800px;
            margin: 60px auto;
            overflow: hidden;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }

        .carousel .image-container {
            position: absolute;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 0.8s ease-in-out, transform 0.8s ease-in-out;
            z-index: 1;
        }

        .carousel .image-container.active {
            opacity: 1;
            transform: translateX(0);
            z-index: 2;
        }

        .carousel .image-container img {
            width: 100%;
            height: 100%;
            object-fit: contain;
            position: relative;
            z-index: 2;
        }

        .carousel .image-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: inherit;
            background-size: cover;
            background-position: center;
            filter: blur(52px);
            z-index: 1;
            opacity: 0.9;
        }

        .carousel-btn {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background: linear-gradient(135deg, #ff4d6d, #e6395c);
            color: #fff;
            border: none;
            padding: 12px 20px;
            cursor: pointer;
            font-size: 1.2em;
            border-radius: 10px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
            z-index: 3;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .carousel-btn:hover {
            background: linear-gradient(135deg, #e6395c, #ff4d6d);
            transform: translateY(-50%) scale(1.1);
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
        }

        .carousel-btn:active {
            transform: translateY(-50%) scale(0.95);
        }

        .prev-btn {
            left: 20px;
        }

        .next-btn {
            right: 20px;
        }

        .heart-btn {
            position: relative;
            width: 70px;
            height: 70px;
            background: #ff4d6d;
            border: none;
            cursor: pointer;
            margin: 40px auto;
            transform: rotate(45deg);
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            animation: heartPulse 2s ease-in-out infinite;
            box-shadow: 0 4px 15px rgba(255, 77, 109, 0.5);
            z-index: 5;
        }

        .heart-btn::before,
        .heart-btn::after {
            content: '';
            position: absolute;
            width: 70px;
            height: 70px;
            background: #ff4d6d;
            border-radius: 50%;
            box-shadow: 0 4px 15px rgba(255, 77, 109, 0.5);
            transition: all 0.3s ease;
            z-index: 0;
        }

        .heart-btn::before {
            top: -35px;
            left: 0;
            z-index: -5;
        }

        .heart-btn::after {
            left: -35px;
            top: 0;
            z-index: -5;
        }

        .heart-btn:hover {
            background: #e6395c;
            transform: rotate(45deg) scale(1.15);
            box-shadow: 0 6px 20px rgba(255, 77, 109, 0.7);
            z-index: 0;
        }

        .heart-btn:hover::before,
        .heart-btn:hover::after {
            background: #e6395c;
            box-shadow: 0 6px 20px rgba(255, 77, 109, 0.7);
        }

        .heart-btn span {
            position: relative;
            margin-top: -15px;
            margin-left: -15px;
            transform: rotate(-45deg);
            font-family: 'Playfair Display', serif;
            font-size: 1.5em;
            color: #fff;
            text-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
        }

        @keyframes heartPulse {
            0% { transform: rotate(45deg) scale(1); }
            50% { transform: rotate(45deg) scale(1.1); }
            100% { transform: rotate(45deg) scale(1); }
        }

        .memory-section {
            max-width: 1000px;
            margin: 60px auto;
            padding: 40px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 20px;
        }

        .memory-item {
            margin-bottom: 40px;
            padding: 20px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 15px;
            animation: fadeInUp 1s ease-out;
        }

        .memory-item h3 {
            font-size: 2.2em;
            color: #ff4d6d;
            margin-bottom: 15px;
        }

        .memory-item .date {
            font-size: 1.3em;
            color: #ccc;
            margin-bottom: 15px;
        }

        .future-plans {
            max-width: 900px;
            margin: 60px auto;
            padding: 40px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            animation: fadeInUp 1s ease-out;
        }

        .future-plans h2 {
            font-size: 2.8em;
            color: #ff4d6d;
            margin-bottom: 25px;
            text-align: center;
        }

        .love-meter {
            max-width: 600px;
            margin: 60px auto;
            padding: 40px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 15px;
            text-align: center;
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 1s ease-out, transform 1s ease-out;
        }

        .love-meter.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .love-meter h2 {
            font-size: 2.8em;
            color: #ff4d6d;
            margin-bottom: 20px;
        }

        .meter-container {
            width: 100%;
            height: 30px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 15px;
            overflow: hidden;
            position: relative;
            border: 2px solid #f06292;
        }

        .meter-fill {
            width: 0;
            height: 100%;
            background: linear-gradient(to right, #ff4d6d, #e6395c);
            transition: width 2s ease-in-out;
        }

        .meter-fill.active {
            width: 100%;
        }

        .meter-text {
            font-size: 1.6em;
            color: #f4f4f4;
            margin-top: 20px;
            font-style: italic;
        }

        .end-message {
            max-width: 800px;
            margin: 60px auto;
            padding: 40px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 15px;
            font-size: 1.6em;
            text-align: center;
            animation: zoomIn 1s ease-out;
        }
         .signatur {
            font-size: 1.5em;
            font-style: italic;
            color: #ff4d6d;
            margin-top: 15px;
            text-align: center;
        }

        .signature {
            font-size: 2.2em;
            font-style: italic;
            color: #ff4d6d;
            margin-top: 30px;
            text-align: center;
        }

        .footer {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            padding: 40px 20px;
            background: rgba(0, 0, 0, 0.8);
            margin-top: 30px;
            position: relative;
            width: 100%;
            box-sizing: border-box;
        }

        .footer p {
            font-size: 1em;
            color: #f4f4f4;
            margin: 0 0 10px 0;
            text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
        }

        .particle {
            position: absolute;
            width: 5px;
            height: 5px;
            background: #ff4d6d;
            border-radius: 50%;
            opacity: 0;
        }

        .music-control {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .music-btn {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #ff4d6d, #e6395c);
            border: none;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
            transition: all 0.3s ease;
        }

        .music-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 20px rgba(255, 77, 109, 0.6);
        }

        .music-btn:active {
            transform: scale(0.95);
        }

        .music-btn svg {
            width: 24px;
            height: 24px;
            fill: #fff;
        }

        .volume-control {
            width: 120px;
            background: rgba(255, 255, 255, 0.15);
            padding: 10px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(255, 77, 109, 0.5);
            margin-top: 10px;
            display: none;
            opacity: 0;
            transform: translateY(-10px);
            transition: opacity 0.3s ease, transform 0.3s ease;
        }

        .volume-control.visible {
            display: block;
            opacity: 1;
            transform: translateY(0);
        }

        .volume-control input {
            width: 100%;
            height: 8px;
            background: rgba(255, 255, 255, 0.3);
            border-radius: 4px;
            outline: none;
            cursor: pointer;
            -webkit-appearance: none;
        }

        .volume-control input::-webkit-slider-thumb {
            -webkit-appearance: none;
            width: 16px;
            height: 16px;
            background: #ff4d6d;
            border-radius: 50%;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
        }

        .volume-control input::-moz-range-thumb {
            width: 16px;
            height: 16px;
            background: #ff4d6d;
            border-radius: 50%;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
            border: none;
        }

        /* Modal styles for the letter */
        .letter-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            display: none;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            overflow-y: auto;
        }

        .letter-card {
            background: #ffffff;
            border-radius: 12px;
            padding: 40px;
            max-width: 550px;
            width: 90%;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            position: relative;
            border: 2px solid #ef9a9a;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="50" height="50" viewBox="0 0 50 50"><path d="M25 10 C20 5, 15 5, 10 10 C5 15, 5 20, 10 25 C15 30, 20 30, 25 25 C30 30, 35 30, 40 25 C45 20, 45 15, 40 10 C35 5, 30 5, 25 10" fill="none" stroke="#ef9a9a" stroke-width="1" opacity="0.1"/></svg>');
            background-repeat: repeat;
            animation: slideIn 0.5s ease-out;
            display: flex;
            flex-direction: column;
            max-height: 80vh;
        }

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

        .letter-card::before {
            content: '';
            position: absolute;
            top: 10px;
            right: 20px;
            width: 50px;
            height: 50px;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 50 50"><circle cx="25" cy="25" r="20" fill="#ef9a9a"/><path d="M25 15 C22 10, 18 10, 15 15 C12 20, 12 25, 15 30 C18 35, 22 35, 25 30 C28 35, 32 35, 35 30 C38 25, 38 20, 35 15 C32 10, 28 10, 25 15" fill="#fff" stroke="#ef9a9a" stroke-width="1"/></svg>') no-repeat;
            opacity: 0.8;
        }

        .letter-card h2 {
            margin: 0 0 20px 0;
            font-size: 50px;
            color: #b71c1c;
            text-align: center;
            font-family: 'Great Vibes', cursive;
            letter-spacing: 1px;
            border-bottom: 1px solid #ef9a9a;
            padding-bottom: 10px;
            flex-shrink: 0;
        }

        .letter-card .close {
            position: absolute;
            top: 15px;
            right: 15px;
            font-size: 24px;
            background: none;
            border: none;
            cursor: pointer;
            color: #666;
            transition: color 0.2s;
        }

        .letter-card .close:hover {
            color: #ef9a9a;
        }

        .typewriter-container {
            font-size: 16px;
            line-height: 1.8;
            color: #2d2d2d;
            width: 100%;
            max-height: 50vh; 
            overflow-y: auto; 
            padding-right: 10px; 
            flex-grow: 1; 
            margin-bottom: 20px;
        }
        .typewriter-container::-webkit-scrollbar {
    width: 8px;
}

.typewriter-container::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

.typewriter-container::-webkit-scrollbar-thumb {
    background: #ef9a9a;
    border-radius: 4px;
}

.typewriter-container::-webkit-scrollbar-thumb:hover {
    background: #e6395c;
}

        .line {
    margin-bottom: 12px;
    white-space: pre-wrap;
    word-wrap: break-word;
    height: 0; /* Inicialmente sin altura */
    opacity: 0; /* Oculta la línea */
    overflow: hidden; /* Evita que el cursor o contenido vacío sea visible */
    transition: height 0.3s ease, opacity 0.3s ease; /* Transición suave */
}
.line.active {
    font-size: 1.05em;
    line-height: 1.2em;
    height: auto; /* Altura automática cuando se activa */
    opacity: 1; /* Muestra la línea */
    min-height: 28px; /* Restaura el min-height original cuando se escribe */
}

        .cursor {
            display: inline-block;
            width: 2px;
            height: 1.2em;
            background-color: #ef9a9a;
            animation: blink 0.7s infinite;
            vertical-align: middle;
            margin-left: 2px;
        }

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

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

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

        @keyframes zoomIn {
            from { opacity: 0; transform: scale(0.8); }
            to { opacity: 1; transform: scale(1); }
        }

        @media (max-width: 768px) {
            .main-container {
                padding: 20px;
                padding-top: 35px;
            }

            .title {
                font-size: 4.2em;
                margin-bottom: 10px;
            }

            .time-title {
                font-size: 1.8em;
            }

            .time-display {
                display: block;
                width: 100%;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: clip;
                text-align: center;
                font-size: clamp(1rem, 5.4vw, 1.5em);
                padding: 10px 15px;
                transform-origin: center;
                box-sizing: border-box;
                letter-spacing: 0.2em;
            }

            .section-title {
                font-size: 1.8em;
            }

            .time-label {
                font-size: 1em;
            }

            .personalized-message {
                font-size: 0.9em;
            }

            .intro {
                font-size: 0.95em;
                padding: 15px;
                margin: 0 auto 30px;
            }

            .quote-section {
                margin: 20px auto;
                font-size: 1.2em;
            }

            .carousel {
                max-width: 650px;
                margin: 20px auto;
            }

            .carousel-btn {
                font-size: 0.7em;
                padding: 8px 14px;
                color: #e6395c;
                background: rgba(0, 0, 0, 0.50);
                border-width: medium;
                border-style: solid;
                border-color: #e6395c;
            }

            .carousel-btn:hover {
                background: linear-gradient(135deg, rgba(230, 57, 92, 0.3), rgba(255, 77, 109, 0.3));
            }

            .prev-btn {
                left: 10px;
            }

            .next-btn {
                right: 10px;
            }

            .heart-btn {
                width: 60px;
                height: 60px;
            }

            .heart-btn::before, .heart-btn::after {
                width: 60px;
                height: 60px;
            }

            .heart-btn::before {
                top: -30px;
            }

            .heart-btn::after {
                left: -30px;
            }

            .heart-btn span {
                font-size: 0.9em;
            }

            .letter-card {
                padding: 20px;
                max-width: 90%;
                max-height: 90vh;
            }

            .letter-card h2 {
        font-size: 2em;
    }

            .typewriter-container {
                font-size: 14px;
                max-height: 60vh; 
                padding-right: 8px;
            }
            .typewriter-container::-webkit-scrollbar {
        width: 6px;
    }

            .memory-section {
                padding: 18px;
                margin: 30px auto;
            }

            .memory-item {
                padding: 13px;
                margin-bottom: 20px;
            }

            .memory-item h3 {
                font-size: 1.2em;
                margin-bottom: 10px;
            }

            .memory-item .date {
                font-size: 1em;
                margin-bottom: 8px;
            }

            .memory-item p {
                font-size: 0.8em;
            }

            .future-plans {
                margin: 25px auto;
                padding: 22px;
            }

            .future-plans h2 {
                font-size: 1.9em;
            }

            .love-meter {
                margin: 25px auto;
                padding: 22px;
            }

            .love-meter h2 {
                font-size: 1.8em;
            }

            .meter-container {
                height: 25px;
            }

            .end-message {
                margin: 25px auto;
                padding: 22px;
                font-size: 1.3em;
            }

            .signature {
                font-size: 1.8em;
            }

            .music-control {
                right: 15px;
            }

            .music-btn {
                width: 35px;
                height: 35px;
            }

            .music-btn svg {
                width: 22px;
                height: 22px;
            }

            .volume-control {
                width: 100px;
                margin-top: 8px;
            }

            .volume-control input {
                height: 10px;
            }

            .volume-control input::-webkit-slider-thumb {
                width: 18px;
                height: 18px;
            }

            .volume-control input::-moz-range-thumb {
                width: 18px;
                height: 18px;
            }

            .time-since-birth {
                margin: 17px 0;
                padding: 20px;
            }

            .footer {
                padding: 25px 20px;
                font-size: 0.7em;
            }
        }

        @media (max-width: 768px) and (min-aspect-ratio: 16/9) {
            .main-container {
                padding: 40px 15px;
            }
            .time-display {
                font-size: 1.3em;
                letter-spacing: 3px;
                padding: 4px 6px;
                transform: scale(0.85);
            }

            .title {
                font-size: 3em;
                margin-bottom: 30px;
            }

            .end-message {
                margin: 25px auto;
            }
            }
         .signatur {
            font-size: 1em;
           
        }

            .footer {
                padding: 25px 20px;
                font-size: 0.7em;
            }

            .time-since-birth {
                padding: 10px;
            }

            

            

            .intro, .quote-section, .memory-section, .future-plans, .love-meter, .end-message {
                margin: 30px auto;
                padding: 20px;
            }

            .heart-btn {
                width: 50px;
                height: 50px;
            }

            .heart-btn::before, .heart-btn::after {
                width: 50px;
                height: 50px;
            }

            .heart-btn::before {
                top: -25px;
            }

            .heart-btn::after {
                left: -25px;
            }

            .heart-btn span {
                font-size: 0.8em;
                margin-top: -10px;
                margin-left: -10px;
            }

            .letter-card {
                padding: 20px;
            }

            .letter-card h2 {
                        font-size: 2em;
            }

            .typewriter-container {
                font-size: 13px;
            }
        

        .section-title {
            font-size: 2em;
            color: #ff4d6d;
            text-align: center;
            margin-bottom: 30px;
            text-shadow: 0 0 15px rgba(255, 77, 109, 0.5);
        }

        .divider {
            width: 80%;
            height: 4px;
            background: linear-gradient(to right, #ff4d6d, #fff, #ff4d6d);
            margin: 10px auto;
            border-radius: 2px;
        }

        .highlight {
            color: #ff4d6d;
            font-weight: bold;
        }

        .animated-text {
            display: inline-block;
            animation: bounceIn 1s ease-out;
        }

        @keyframes bounceIn {
            0% { transform: scale(0.3); opacity: 0; }
            50% { transform: scale(1.2); opacity: 1; }
            100% { transform: scale(1); }
        }

        .glass-effect {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hover-effect {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .hover-effect:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
        }

        .fade-in-section {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 1s ease-out, transform 1s ease-out;
        }

        .fade-in-section.visible {
            opacity: 1;
            transform: translateY(0);
        }