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

        body {
            font-family: 'Poppins', sans-serif;
            overflow-x: hidden;
            background: #0f0f1a;
            color: white;
        }

        /* song  */
        #musicBtn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 1000;
            background: linear-gradient(45deg, #ffb7c5, #ff8fa3);
            border: none;
            border-radius: 50%;
            width: 60px;
            height: 60px;
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 5px 20px rgba(255, 143, 163, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s;
        }

        #musicBtn:hover { transform: scale(1.1); }

        #musicBtn.playing {
            animation: pulse 1.5s infinite;
            background: linear-gradient(45deg, #ff8fa3, #ff6b8a);
        }

        @keyframes pulse {
            0%, 100% { box-shadow: 0 5px 20px rgba(255, 143, 163, 0.4); }
            50% { box-shadow: 0 5px 30px rgba(255, 143, 163, 0.7); }
        }

        .music-note {
            position: fixed;
            font-size: 20px;
            z-index: 999;
            pointer-events: none;
            animation: float-note 3s ease-out forwards;
        }

        @keyframes float-note {
            0% { opacity: 1; transform: translateY(0) rotate(0deg); }
            100% { opacity: 0; transform: translateY(-100px) rotate(360deg); }
        }

        #musicBtn::after {
            content: 'A Thousand Years 💕';
            position: absolute;
            right: 70px;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(255,255,255,0.9);
            padding: 8px 15px;
            border-radius: 20px;
            border: 1px solid #ffd1dc;
            font-size: 0.8rem;
            color: #ff8fa3;
            white-space: nowrap;
            opacity: 0;
            transition: opacity 0.3s;
            pointer-events: none;
        }

        #musicBtn:hover::after {
            opacity: 1;
        }


        /* Sound wave animation when birthday song plays */
        .sound-wave {
            display: flex;
            justify-content: center;
            gap: 4px;
            height: 40px;
            align-items: flex-end;
            margin-top: 20px;
            opacity: 0;
            transition: opacity 0.5s;
        }

        .sound-wave.active {
            opacity: 1;
        }

        .sound-wave .wave-bar {
            width: 6px;
            background: linear-gradient(to top, #ff8fa3, #ffb7c5);
            border-radius: 3px;
            animation: wave 0.8s ease-in-out infinite;
        }

        .sound-wave .wave-bar:nth-child(1) { height: 15px; animation-delay: 0s; }
        .sound-wave .wave-bar:nth-child(2) { height: 30px; animation-delay: 0.1s; }
        .sound-wave .wave-bar:nth-child(3) { height: 20px; animation-delay: 0.2s; }
        .sound-wave .wave-bar:nth-child(4) { height: 35px; animation-delay: 0.3s; }
        .sound-wave .wave-bar:nth-child(5) { height: 25px; animation-delay: 0.4s; }

        @keyframes wave {
            0%, 100% { transform: scaleY(1); }
            50% { transform: scaleY(1.6); }
        }
        /* Floating Hearts Background */
        .hearts-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            overflow: hidden;
            z-index: 0;
        }

        .heart {
            position: absolute;
            font-size: 20px;
            animation: float-up linear infinite;
            opacity: 0.6;
        }

        @keyframes float-up {
            0% {
                transform: translateY(100vh) rotate(0deg);
                opacity: 0;
            }
            10% {
                opacity: 0.6;
            }
            90% {
                opacity: 0.6;
            }
            100% {
                transform: translateY(-100vh) rotate(720deg);
                opacity: 0;
            }
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            position: relative;
            z-index: 1;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            padding: 20px;
        }

        .hero h1 {
            font-family: 'Dancing Script', cursive;
            font-size: 4rem;
            margin-bottom: 20px;
            background: linear-gradient(45deg, #ff6b6b, #feca57, #ff9ff3, #54a0ff);
            background-size: 300% 300%;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            animation: gradient-shift 5s ease infinite;
        }

        @keyframes gradient-shift {
            0%, 100% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
        }

        .hero .subtitle {
            font-size: 1.3rem;
            color: #ddd;
            margin-bottom: 30px;
            max-width: 600px;
            line-height: 1.6;
        }

        .countdown {
            display: flex;
            gap: 20px;
            margin: 30px 0;
            flex-wrap: wrap;
            justify-content: center;
        }

        .countdown-item {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 20px 30px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            min-width: 100px;
        }

        .countdown-item .number {
            font-size: 2.5rem;
            font-weight: 600;
            color: #ff6b6b;
        }

        .countdown-item .label {
            font-size: 0.9rem;
            color: #aaa;
            text-transform: uppercase;
            letter-spacing: 2px;
        }

        .scroll-indicator {
            position: absolute;
            bottom: 30px;
            animation: bounce 2s infinite;
            font-size: 2rem;
            cursor: pointer;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
            40% { transform: translateY(-20px); }
            60% { transform: translateY(-10px); }
        }

        /* Sections */
        section {
            position: relative;
            z-index: 1;
            padding: 80px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-title {
            font-family: 'Dancing Script', cursive;
            font-size: 3rem;
            text-align: center;
            margin-bottom: 50px;
            color: #ff6b6b;
        }

        /* Love Letter */
        .love-letter {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            border-radius: 30px;
            padding: 50px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            overflow: hidden;
        }

        .love-letter::before {
            content: '💌';
            position: absolute;
            top: 20px;
            right: 30px;
            font-size: 3rem;
            opacity: 0.3;
        }

        .love-letter p {
            font-size: 1.1rem;
            line-height: 2;
            color: #e0e0e0;
            margin-bottom: 20px;
        }

        .love-letter .signature {
            font-family: 'Dancing Script', cursive;
            font-size: 2rem;
            color: #ff9ff3;
            text-align: right;
            margin-top: 30px;
        }

        /* Photo Gallery */
        .gallery {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .photo-card {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 20px;
            padding: 20px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: transform 0.3s, box-shadow 0.3s;
            cursor: pointer;
            min-height: 300px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }

        .photo-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(255, 107, 107, 0.2);
        }

        .photo-placeholder {
            width: 100%;
            height: 200px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            margin-bottom: 15px;
        }

        .photo-card p {
            color: #ccc;
            font-size: 0.95rem;
        }

        /* Timeline */
        .timeline {
            position: relative;
            padding: 20px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            width: 2px;
            height: 100%;
            background: linear-gradient(to bottom, #ff6b6b, #ff9ff3, #54a0ff);
        }

        .timeline-item {
            display: flex;
            justify-content: flex-end;
            padding-right: 50%;
            position: relative;
            margin-bottom: 50px;
        }

        .timeline-item:nth-child(even) {
            justify-content: flex-start;
            padding-right: 0;
            padding-left: 50%;
        }

        .timeline-content {
            background: rgba(255, 255, 255, 0.08);
            padding: 25px;
            border-radius: 20px;
            max-width: 400px;
            margin: 0 30px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            position: relative;
        }

        .timeline-content::after {
            content: '❤️';
            position: absolute;
            top: 50%;
            width: 40px;
            height: 40px;
            background: #1a1a2e;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }

        .timeline-item:nth-child(odd) .timeline-content::after {
            right: -50px;
            transform: translateY(-50%);
        }

        .timeline-item:nth-child(even) .timeline-content::after {
            left: -50px;
            transform: translateY(-50%);
        }

        .timeline-date {
            color: #ff6b6b;
            font-weight: 600;
            margin-bottom: 10px;
        }

        /* Interactive Cake */
        .cake-section {
            text-align: center;
            padding: 60px 20px;
        }

        .cake-container {
            position: relative;
            width: 300px;
            height: 300px;
            margin: 40px auto;
            cursor: pointer;
        }

        .cake {
            font-size: 200px;
            line-height: 1;
            transition: transform 0.3s;
            display: inline-block;
        }

        .cake:hover {
            transform: scale(1.1);
        }

        .candle {
            position: absolute;
            font-size: 40px;
            animation: flicker 0.5s infinite alternate;
        }

        .candle:nth-child(1) { top: 20px; left: 80px; }
        .candle:nth-child(2) { top: 10px; left: 130px; }
        .candle:nth-child(3) { top: 20px; left: 180px; }

        @keyframes flicker {
            0% { opacity: 1; transform: scale(1); }
            100% { opacity: 0.8; transform: scale(0.95); }
        }

        .blow-candles {
            margin-top: 20px;
            padding: 15px 40px;
            background: linear-gradient(45deg, #ff6b6b, #ff9ff3);
            border: none;
            border-radius: 50px;
            color: white;
            font-size: 1.1rem;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
            font-family: 'Poppins', sans-serif;
        }

        .blow-candles:hover {
            transform: scale(1.05);
            box-shadow: 0 10px 30px rgba(255, 107, 107, 0.4);
        }

        /* Reasons Why I Love You */
        .reasons-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin-top: 40px;
        }

        .reason-card {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 20px;
            padding: 30px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .reason-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, #ff6b6b, #ff9ff3);
        }

        .reason-card:hover {
            transform: translateY(-5px);
            background: rgba(255, 255, 255, 0.08);
        }

        .reason-number {
            font-size: 3rem;
            font-weight: 700;
            color: rgba(255, 107, 107, 0.3);
            position: absolute;
            top: 10px;
            right: 20px;
        }

        .reason-card h3 {
            color: #ff9ff3;
            margin-bottom: 10px;
            font-size: 1.2rem;
        }

        .reason-card p {
            color: #ccc;
            line-height: 1.6;
        }

        /* Final Message */
        .final-message {
            text-align: center;
            padding: 100px 20px;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
        }

        .final-message h2 {
            font-family: 'Dancing Script', cursive;
            font-size: 3.5rem;
            margin-bottom: 30px;
            color: #ff6b6b;
        }

        .final-message p {
            font-size: 1.3rem;
            color: #ddd;
            max-width: 600px;
            margin: 0 auto 40px;
            line-height: 1.8;
        }

        .big-heart {
            font-size: 100px;
            animation: heartbeat 1.5s infinite;
            display: inline-block;
        }

        @keyframes heartbeat {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.2); }
        }

        /* Music Player Visual */
        .music-visual {
            display: flex;
            justify-content: center;
            gap: 5px;
            height: 60px;
            align-items: flex-end;
            margin: 30px 0;
        }

        .bar {
            width: 8px;
            background: linear-gradient(to top, #ff6b6b, #ff9ff3);
            border-radius: 4px;
            animation: music-bar 1s ease-in-out infinite;
        }

        .bar:nth-child(1) { height: 20px; animation-delay: 0s; }
        .bar:nth-child(2) { height: 40px; animation-delay: 0.1s; }
        .bar:nth-child(3) { height: 30px; animation-delay: 0.2s; }
        .bar:nth-child(4) { height: 50px; animation-delay: 0.3s; }
        .bar:nth-child(5) { height: 25px; animation-delay: 0.4s; }
        .bar:nth-child(6) { height: 45px; animation-delay: 0.5s; }
        .bar:nth-child(7) { height: 35px; animation-delay: 0.6s; }

        @keyframes music-bar {
            0%, 100% { transform: scaleY(1); }
            50% { transform: scaleY(1.5); }
        }

        /* Responsive */
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.5rem; }
            .section-title { font-size: 2rem; }
            .timeline::before { left: 20px; }
            .timeline-item,
            .timeline-item:nth-child(even) {
                justify-content: flex-start;
                padding-left: 60px;
                padding-right: 0;
            }
            .timeline-content::after {
                left: -45px !important;
                right: auto !important;
            }
            .love-letter { padding: 30px 20px; }
            .countdown-item { min-width: 80px; padding: 15px 20px; }
            .countdown-item .number { font-size: 1.8rem; }
        }

        /* Confetti */
        .confetti {
            position: fixed;
            width: 10px;
            height: 10px;
            top: -10px;
            animation: confetti-fall linear forwards;
            z-index: 1000;
        }

        @keyframes confetti-fall {
            to {
                transform: translateY(100vh) rotate(720deg);
                opacity: 0;
            }
        }

        /* Hidden class for interactions */
        .hidden { display: none; }

        .wish-text {
            font-size: 1.5rem;
            color: #ff9ff3;
            margin-top: 20px;
            opacity: 0;
            transition: opacity 1s;
        }

        .wish-text.visible {
            opacity: 1;
        }