/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(118, 75, 162, 0.3) 0%, transparent 50%);
    animation: backgroundMove 20s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes backgroundMove {
    0%, 100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1) rotate(5deg);
    }
}

/* Curtain Effect */
.curtain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.curtain-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
}

.curtain {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(180deg, #8B0000 0%, #DC143C 50%, #8B0000 100%);
    transition: transform 2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

.curtain::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        90deg,
        transparent,
        transparent 40px,
        rgba(0, 0, 0, 0.1) 40px,
        rgba(0, 0, 0, 0.1) 60px
    );
}

.curtain::after {
    content: '';
    position: absolute;
    top: 0;
    width: 100%;
    height: 50px;
    background: linear-gradient(180deg, #FFD700 0%, #FFA500 100%);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.curtain-left {
    left: 0;
    transform-origin: left center;
}

.curtain-right {
    right: 0;
    transform-origin: right center;
}

.curtain-overlay.open .curtain-left {
    transform: translateX(-100%);
}

.curtain-overlay.open .curtain-right {
    transform: translateX(100%);
}

.curtain-ribbon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 150px;
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 50%, #FFD700 100%);
    clip-path: polygon(
        10% 0%, 90% 0%, 100% 10%, 100% 40%, 90% 50%, 100% 60%, 100% 90%, 90% 100%,
        10% 100%, 0% 90%, 0% 60%, 10% 50%, 0% 40%, 0% 10%
    );
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    transition: all 1.5s ease;
    animation: ribbonFloat 3s ease-in-out infinite;
    z-index: 1;
}

@keyframes ribbonFloat {
    0%, 100% {
        transform: translate(-50%, -50%) rotate(-2deg);
    }
    50% {
        transform: translate(-50%, -50%) rotate(2deg);
    }
}

.curtain-overlay.open .curtain-ribbon {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0) rotate(360deg);
}

.ribbon-text {
    font-size: 1.8rem;
    font-weight: 900;
    color: #8B0000;
    text-shadow: 2px 2px 4px rgba(255, 255, 255, 0.8);
    letter-spacing: 3px;
    text-align: center;
    animation: ribbonPulse 2s ease-in-out infinite;
}

@keyframes ribbonPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.launch-button {
    position: absolute;
    top: 65%;
    left: 50%;
    transform: translateX(-50%);
    padding: 25px 60px;
    font-size: 2rem;
    font-weight: 900;
    color: white;
    background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    border: 5px solid #FFD700;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
    animation: launchButtonPulse 1.5s ease-in-out infinite;
    z-index: 2;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.launch-button:hover {
    transform: translateX(-50%) scale(1.1);
    box-shadow: 0 20px 60px rgba(255, 107, 107, 0.6);
}

@keyframes launchButtonPulse {
    0%, 100% {
        box-shadow: 0 15px 50px rgba(0, 0, 0, 0.5), 0 0 0 0 rgba(255, 215, 0, 0.7);
    }
    50% {
        box-shadow: 0 15px 50px rgba(0, 0, 0, 0.5), 0 0 0 20px rgba(255, 215, 0, 0);
    }
}

.countdown-timer {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    display: none;
    z-index: 3;
}

.countdown-number {
    font-size: 10rem;
    font-weight: 900;
    color: #FFFFFF;
    text-shadow: 
        0 0 30px rgba(255, 255, 255, 1),
        0 0 60px rgba(255, 215, 0, 1),
        0 0 90px rgba(255, 140, 0, 0.8),
        5px 5px 15px rgba(0, 0, 0, 0.9),
        -2px -2px 5px rgba(255, 255, 255, 0.5);
    animation: countdownPop 0.6s ease-out;
    line-height: 1;
    -webkit-text-stroke: 2px #FFD700;
}

.countdown-text {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    margin-top: 20px;
    letter-spacing: 3px;
}

@keyframes countdownPop {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }
    50% {
        transform: scale(1.2) rotate(10deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}

/* Confetti Animation */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: #f0f;
    animation: confetti-fall 3s linear infinite;
}

@keyframes confetti-fall {
    to {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

/* Balloons */
.balloons {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 0;
}

.balloon {
    position: absolute;
    font-size: 3rem;
    animation: float 6s ease-in-out infinite;
    opacity: 0.7;
}

.balloon-1 {
    left: 10%;
    animation-delay: 0s;
}

.balloon-2 {
    left: 30%;
    animation-delay: 1s;
}

.balloon-3 {
    left: 50%;
    animation-delay: 2s;
}

.balloon-4 {
    left: 70%;
    animation-delay: 1.5s;
}

.balloon-5 {
    left: 90%;
    animation-delay: 0.5s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(100vh) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(10deg);
    }
}

/* Birthday Section */
.birthday-section {
    margin: 40px 0;
    animation: fadeInDown 1s ease-out;
}

.birthday-card {
    background: linear-gradient(135deg, #ffd89b 0%, #19547b 100%);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    color: white;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    transition: transform 0.3s ease;
}

.birthday-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 3s infinite;
    pointer-events: none;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

.birthday-card:hover {
    transform: translateY(-5px) rotateX(2deg);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
}

.birthday-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    animation: bounce 2s ease-in-out infinite;
}

.birthday-message {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.cake {
    font-size: 4rem;
    animation: rotate 3s ease-in-out infinite;
}

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

@keyframes rotate {
    0%, 100% {
        transform: rotate(-5deg);
    }
    50% {
        transform: rotate(5deg);
    }
}

/* Launch Section */
.launch-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 60px 40px;
    margin: 40px 0;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(255, 255, 255, 0.5) inset;
    animation: fadeInUp 1s ease-out;
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.launch-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    animation: slideLight 3s infinite;
}

@keyframes slideLight {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

.launch-header {
    text-align: center;
    margin-bottom: 40px;
}

.app-title {
    font-size: 1.5rem;
    color: #667eea;
    font-weight: 600;
    margin-bottom: 10px;
}

.app-name {
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%, #667eea 200%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    animation: glow 2s ease-in-out infinite, gradientShift 3s ease infinite;
    position: relative;
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% center;
    }
    50% {
        background-position: 100% center;
    }
}

@keyframes glow {
    0%, 100% {
        filter: drop-shadow(0 0 10px rgba(102, 126, 234, 0.5));
    }
    50% {
        filter: drop-shadow(0 0 20px rgba(102, 126, 234, 0.8));
    }
}

.app-tagline {
    font-size: 1.3rem;
    color: #666;
    font-style: italic;
}

.app-description {
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #444;
    margin-bottom: 50px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.feature-card {
    background: linear-gradient(135deg, rgba(245, 247, 250, 0.9) 0%, rgba(195, 207, 226, 0.9) 100%);
    backdrop-filter: blur(5px);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    animation: fadeIn 1s ease-out;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 15px;
    padding: 2px;
    background: linear-gradient(135deg, #667eea, #764ba2, #667eea);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-15px) scale(1.03);
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.5);
}

.feature-card:hover::before {
    opacity: 1;
    animation: borderRotate 3s linear infinite;
}

@keyframes borderRotate {
    0% {
        filter: hue-rotate(0deg);
    }
    100% {
        filter: hue-rotate(360deg);
    }
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    display: inline-block;
    transition: transform 0.3s ease;
    filter: drop-shadow(0 5px 15px rgba(102, 126, 234, 0.3));
}

.feature-card:hover .feature-icon {
    transform: scale(1.2) rotateY(360deg);
    filter: drop-shadow(0 8px 20px rgba(102, 126, 234, 0.5));
}

.feature-card h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 10px;
    font-weight: 600;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    text-align: center;
    margin: 50px 0;
}

.btn {
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    margin: 10px;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    position: relative;
    z-index: 1;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    border-radius: 50px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.btn-primary:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 20px 50px rgba(102, 126, 234, 0.7);
}

.btn-primary:hover::after {
    opacity: 1;
}

.btn-primary:active {
    transform: translateY(-2px) scale(1.02);
}

.btn-secondary {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
    position: relative;
    z-index: 1;
}

.btn-secondary::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50px;
    transition: width 0.4s ease;
    z-index: -1;
}

.btn-secondary:hover {
    color: white;
    border-color: transparent;
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

.btn-secondary:hover::after {
    width: 100%;
}

/* Launch Date */
.launch-date {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    border-radius: 15px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(252, 182, 159, 0.3);
}

.launch-date::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255, 255, 255, 0.1) 10px,
        rgba(255, 255, 255, 0.1) 20px
    );
    animation: movePattern 20s linear infinite;
}

@keyframes movePattern {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

.launch-date p {
    font-size: 1.1rem;
    color: #333;
    margin: 10px 0;
}

.launch-date strong {
    color: #d32f2f;
    font-weight: 700;
}

/* Special Message Section */
.special-message {
    margin: 40px 0;
    animation: fadeIn 1.5s ease-out;
}

.message-card {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    color: white;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.message-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    animation: rotateGlow 10s linear infinite;
    pointer-events: none;
}

@keyframes rotateGlow {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.message-card:hover {
    transform: scale(1.02);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}

.message-card h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.message-card p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 15px;
}

.signature {
    font-style: italic;
    font-size: 1.2rem;
    margin-top: 30px;
    font-weight: 600;
}

/* Footer */
.footer {
    text-align: center;
    padding: 30px;
    color: white;
    margin-top: 40px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    animation: footerLine 3s ease-in-out infinite;
}

@keyframes footerLine {
    0%, 100% {
        transform: translateX(-100%);
    }
    50% {
        transform: translateX(100%);
    }
}

.footer p {
    margin: 10px 0;
    font-size: 1rem;
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.footer p:hover {
    transform: scale(1.05);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.7);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.back-to-top:active {
    transform: translateY(-2px) scale(1.05);
}

/* Text selection styling */
::selection {
    background: rgba(102, 126, 234, 0.8);
    color: white;
}

::-moz-selection {
    background: rgba(102, 126, 234, 0.8);
    color: white;
}

/* Smooth scrollbar styling */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

/* Floating animation for elements */
@keyframes floatSoft {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.birthday-card .cake {
    animation: floatSoft 3s ease-in-out infinite, rotate 3s ease-in-out infinite;
}

/* Add glow effect to important text */
.app-tagline {
    transition: all 0.3s ease;
}

.launch-header:hover .app-tagline {
    text-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

/* Feature card number badge effect */
.feature-card {
    counter-increment: feature-counter;
}

.features-grid {
    counter-reset: feature-counter;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .birthday-title {
        font-size: 2rem;
    }

    .app-name {
        font-size: 2.5rem;
    }

    .birthday-message,
    .app-tagline,
    .app-description {
        font-size: 1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .btn {
        padding: 12px 30px;
        font-size: 1rem;
    }

    .balloon {
        font-size: 2rem;
    }

    .cake {
        font-size: 3rem;
    }

    .curtain-ribbon {
        width: 280px;
        height: 100px;
    }

    .ribbon-text {
        font-size: 1.2rem;
        letter-spacing: 1px;
    }

    .launch-button {
        font-size: 1.3rem;
        padding: 20px 40px;
        top: 60%;
    }

    .countdown-number {
        font-size: 6rem;
    }

    .countdown-text {
        font-size: 1.3rem;
    }

    .scroll-indicator {
        display: none;
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
        bottom: 20px;
        right: 20px;
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    z-index: 100;
    animation: bounce 2s infinite;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.scroll-indicator.hidden {
    opacity: 0;
    pointer-events: none;
}

.scroll-arrow {
    font-size: 2.5rem;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    animation: arrowBounce 1.5s ease-in-out infinite;
}

@keyframes arrowBounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(10px);
    }
}

.scroll-text {
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
    margin-top: 5px;
    letter-spacing: 1px;
}

/* Sparkles */
.sparkles-container {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 1;
}

.sparkle {
    position: absolute;
    font-size: 1.5rem;
    animation: sparkleFloat 5s ease-in-out infinite;
    opacity: 0.8;
}

@keyframes sparkleFloat {
    0%, 100% {
        transform: translateY(100vh) rotate(0deg) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
        transform: translateY(90vh) rotate(45deg) scale(1);
    }
    90% {
        opacity: 1;
        transform: translateY(10vh) rotate(315deg) scale(1);
    }
    100% {
        transform: translateY(0vh) rotate(360deg) scale(0);
        opacity: 0;
    }
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 50%, #667eea 100%);
    background-size: 200% 100%;
    animation: progressGradient 2s ease infinite;
    z-index: 10001;
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.8);
    transition: width 0.1s ease;
}

@keyframes progressGradient {
    0%, 100% {
        background-position: 0% center;
    }
    50% {
        background-position: 100% center;
    }
}

@media (max-width: 480px) {
    .birthday-card,
    .launch-section,
    .message-card {
        padding: 20px;
    }

    .birthday-title {
        font-size: 1.5rem;
    }

    .app-name {
        font-size: 2rem;
    }
}