:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #4facfe 50%, #00f2fe 100%);
    --accent-gradient: linear-gradient(135deg, #ff6b6b 0%, #ffd93d 50%, #6bcf7f 100%);
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.9);
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 30px rgba(255, 20, 147, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    color: var(--text-primary);
    font-weight: 400;
    line-height: 1.6;
}

/* Giriş Sayfası */
.entry-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.8s ease-out;
    overflow: hidden;
}

.entry-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 200px 200px, 300px 300px;
    background-position: 0 0, 100px 100px;
    animation: particleMove 30s linear infinite;
    opacity: 0.6;
    pointer-events: none;
}

.entry-screen.hidden {
    animation: fadeOut 0.8s ease-out forwards;
    pointer-events: none;
}

.entry-content {
    text-align: center;
    position: relative;
    z-index: 1001;
}

.entry-heart {
    font-size: 6rem;
    margin-bottom: 30px;
    animation: heartPulse 2s ease-in-out infinite;
    filter: drop-shadow(0 0 30px rgba(255, 20, 147, 0.8));
}

@keyframes heartPulse {
    0%, 100% {
        transform: scale(1) rotate(0deg);
    }
    25% {
        transform: scale(1.1) rotate(-5deg);
    }
    50% {
        transform: scale(1.2) rotate(0deg);
    }
    75% {
        transform: scale(1.1) rotate(5deg);
    }
}

.entry-title {
    font-family: 'Playfair Display', serif;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--accent-gradient);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientText 4s ease infinite, fadeInUp 1s ease-out 0.3s both;
    text-shadow: 0 0 40px rgba(255, 255, 255, 0.3);
}

.entry-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 3px;
    margin-bottom: 50px;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.5s both;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.entry-button-wrapper {
    margin: 60px 0;
    animation: fadeInUp 1s ease-out 0.7s both;
}

.entry-button {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    padding: 20px 50px;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2),
                inset 0 0 0 1px rgba(255, 255, 255, 0.2);
    font-family: 'Poppins', sans-serif;
    display: flex;
    align-items: center;
    gap: 15px;
}

.entry-button::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, height 0.6s;
}

.entry-button:hover::before {
    width: 300px;
    height: 300px;
}

.entry-button:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3),
                inset 0 0 0 1px rgba(255, 255, 255, 0.4),
                0 0 30px rgba(255, 20, 147, 0.5);
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

.entry-button:active {
    transform: translateY(-2px) scale(1.02);
}

.button-text {
    position: relative;
    z-index: 1;
}

.button-heart {
    position: relative;
    z-index: 1;
    font-size: 1.5rem;
    animation: heartBeat 1.5s ease-in-out infinite;
}

@keyframes heartBeat {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.3);
    }
}

.entry-sparkles {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
    animation: fadeInUp 1s ease-out 0.9s both;
}

.entry-sparkles .sparkle {
    font-size: 2rem;
    animation: sparkleFloat 3s ease-in-out infinite;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.6));
}

.entry-sparkles .sparkle:nth-child(1) {
    animation-delay: 0s;
}

.entry-sparkles .sparkle:nth-child(2) {
    animation-delay: 0.5s;
}

.entry-sparkles .sparkle:nth-child(3) {
    animation-delay: 1s;
}

@keyframes sparkleFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(1.1);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Particles Background */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 40% 20%, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 200px 200px, 300px 300px, 250px 250px;
    background-position: 0 0, 100px 100px, 50px 50px;
    animation: particleMove 30s linear infinite;
    pointer-events: none;
}

@keyframes particleMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-200px, -200px); }
}

/* Yıldızlı Gökyüzü */
.stars, .twinkling {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    display: block;
    z-index: 0;
    opacity: 0.6;
}

.stars {
    background: #000 url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200"><circle cx="20" cy="20" r="1" fill="white" opacity="0.8"/><circle cx="50" cy="30" r="0.5" fill="white" opacity="0.6"/><circle cx="80" cy="10" r="1.5" fill="white" opacity="0.9"/><circle cx="30" cy="60" r="1" fill="white" opacity="0.7"/><circle cx="70" cy="70" r="0.8" fill="white" opacity="0.8"/><circle cx="10" cy="80" r="1.2" fill="white" opacity="0.9"/><circle cx="90" cy="50" r="0.6" fill="white" opacity="0.6"/><circle cx="120" cy="100" r="1" fill="white" opacity="0.7"/><circle cx="150" cy="40" r="0.8" fill="white" opacity="0.8"/></svg>') repeat;
    animation: move-stars 200s linear infinite;
}

.twinkling {
    background: transparent url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200"><circle cx="20" cy="20" r="1" fill="white"/><circle cx="50" cy="30" r="0.5" fill="white"/><circle cx="80" cy="10" r="1.5" fill="white"/><circle cx="30" cy="60" r="1" fill="white"/><circle cx="70" cy="70" r="0.8" fill="white"/><circle cx="10" cy="80" r="1.2" fill="white"/><circle cx="90" cy="50" r="0.6" fill="white"/></svg>') repeat;
    animation: move-twinkling 100s linear infinite;
}

@keyframes move-stars {
    from { transform: translateX(0); }
    to { transform: translateX(-10000px); }
}

@keyframes move-twinkling {
    from { transform: translateX(0); }
    to { transform: translateX(-10000px); }
}

.container {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 60px 30px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 100px;
    padding-top: 60px;
}

.header-content {
    position: relative;
}

.birthday-badge {
    font-size: 4rem;
    margin-bottom: 30px;
    animation: float 3s ease-in-out infinite;
    filter: drop-shadow(0 0 20px rgba(255, 215, 0, 0.6));
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(5deg); }
}

.title {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    margin-bottom: 25px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.title-line {
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: 8px;
    text-transform: uppercase;
    opacity: 0.9;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.title-main {
    font-size: 5.5rem;
    font-weight: 900;
    background: var(--accent-gradient);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientText 6s ease infinite;
    text-shadow: 0 0 40px rgba(255, 255, 255, 0.3);
    line-height: 1.1;
}

.title-name {
    font-size: 4rem;
    font-weight: 600;
    color: var(--text-primary);
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.3),
                 0 0 30px rgba(255, 20, 147, 0.5);
    letter-spacing: 4px;
}

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

.subtitle {
    font-size: 1.4rem;
    font-weight: 300;
    letter-spacing: 3px;
    text-transform: uppercase;
    opacity: 0.95;
    margin-top: 20px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2);
}

.header-divider {
    width: 150px;
    height: 3px;
    background: var(--accent-gradient);
    margin: 40px auto;
    border-radius: 3px;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

/* Hero Section */
.hero-section {
    margin: 100px 0;
    position: relative;
}

.kiss-container {
    position: relative;
    width: 100%;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    perspective: 1000px;
}

.heart-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.heart {
    position: absolute;
    font-size: 0;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.heart-emoji {
    font-size: 100px;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 0 20px rgba(255, 20, 147, 0.8));
    animation: heartbeat 1.5s ease-in-out infinite;
}

.heart-glow {
    position: absolute;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(255, 20, 147, 0.4) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
    z-index: 1;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.6;
    }
    50% {
        transform: scale(1.3);
        opacity: 0.3;
    }
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

.left-heart {
    left: calc(50% - 180px);
    animation: kissLeft 4s ease-in-out infinite;
}

.right-heart {
    right: calc(50% - 180px);
    animation: kissRight 4s ease-in-out infinite;
}

@keyframes kissLeft {
    0%, 100% {
        transform: translateX(0) scale(1) rotate(0deg);
    }
    25% {
        transform: translateX(50px) scale(1.2) rotate(-20deg);
    }
    50% {
        transform: translateX(100px) scale(1.4) rotate(-30deg);
    }
    75% {
        transform: translateX(50px) scale(1.2) rotate(-20deg);
    }
}

@keyframes kissRight {
    0%, 100% {
        transform: translateX(0) scale(1) rotate(0deg);
    }
    25% {
        transform: translateX(-50px) scale(1.2) rotate(20deg);
    }
    50% {
        transform: translateX(-100px) scale(1.4) rotate(30deg);
    }
    75% {
        transform: translateX(-50px) scale(1.2) rotate(20deg);
    }
}

.kiss-effect {
    position: absolute;
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.8) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0;
    animation: kissFlash 4s ease-in-out infinite;
    z-index: 3;
}

@keyframes kissFlash {
    0%, 100% {
        opacity: 0;
        transform: scale(0.5);
    }
    48%, 52% {
        opacity: 1;
        transform: scale(1.5);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.2);
    }
}

.love-text {
    position: absolute;
    bottom: 50px;
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    font-weight: 600;
    letter-spacing: 8px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
    animation: fadeInOut 4s ease-in-out infinite;
}

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

.sparkles {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.sparkles span {
    animation: sparkle 3s ease-in-out;
}

@keyframes sparkle {
    0%, 100% {
        opacity: 0;
        transform: scale(0) rotate(0deg);
    }
    50% {
        opacity: 1;
        transform: scale(1.5) rotate(180deg);
    }
}

/* Messages Section */
.messages-section {
    margin: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--accent-gradient);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientText 5s ease infinite;
}

.section-divider {
    width: 100px;
    height: 2px;
    background: var(--accent-gradient);
    margin: 0 auto;
    border-radius: 2px;
}

.messages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.message-card {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 40px;
    box-shadow: var(--shadow-md),
                inset 0 0 0 1px var(--glass-border);
    border: 1px solid var(--glass-border);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.message-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.message-card:hover::before {
    transform: scaleX(1);
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.message-card:hover .card-glow {
    opacity: 1;
}

.message-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-lg),
                inset 0 0 0 1px rgba(255, 255, 255, 0.3),
                0 0 40px rgba(255, 20, 147, 0.3);
    background: rgba(255, 255, 255, 0.15);
}

.card-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.3);
    font-family: 'Playfair Display', serif;
}

.message-icon {
    font-size: 3.5rem;
    text-align: center;
    margin-bottom: 25px;
    animation: float 4s ease-in-out infinite;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.3));
}

.message-card h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 20px;
    text-align: center;
    color: var(--text-primary);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.message-card p {
    font-size: 1.1rem;
    line-height: 1.9;
    text-align: justify;
    color: var(--text-secondary);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

/* Special Message Section */
.special-message-section {
    margin: 120px 0;
}

.special-message {
    text-align: center;
}

.special-content {
    background: var(--glass-bg);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-radius: 32px;
    padding: 70px 60px;
    box-shadow: var(--shadow-lg),
                inset 0 0 0 2px var(--glass-border);
    border: 2px solid var(--glass-border);
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.special-content::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.special-header {
    position: relative;
    z-index: 1;
    margin-bottom: 50px;
}

.special-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    animation: float 3s ease-in-out infinite;
}

.special-content h2 {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--accent-gradient);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientText 4s ease infinite;
}

.special-divider {
    width: 120px;
    height: 3px;
    background: var(--accent-gradient);
    margin: 0 auto;
    border-radius: 3px;
}

.poem-container {
    position: relative;
    z-index: 1;
}

.poem-line {
    font-size: 1.4rem;
    line-height: 2.5;
    text-align: center;
    color: var(--text-secondary);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    font-style: italic;
    font-weight: 300;
    margin: 10px 0;
    animation: fadeInUp 0.6s ease-out both;
}

.poem-line:nth-child(1) { animation-delay: 0.1s; }
.poem-line:nth-child(2) { animation-delay: 0.2s; }
.poem-line:nth-child(3) { animation-delay: 0.3s; }
.poem-line:nth-child(4) { animation-delay: 0.4s; }
.poem-line:nth-child(5) { animation-delay: 0.5s; }
.poem-line:nth-child(6) { animation-delay: 0.6s; }
.poem-line:nth-child(7) { animation-delay: 0.7s; }
.poem-line:nth-child(8) { animation-delay: 0.8s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.poem-spacer {
    height: 30px;
}

.poem-signature {
    font-size: 1.8rem;
    font-weight: 600;
    color: #ffd700;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.8),
                 2px 2px 4px rgba(0, 0, 0, 0.3);
    margin-top: 30px;
    font-style: normal;
    font-family: 'Playfair Display', serif;
}

/* Uçan Kalpler */
.floating-hearts {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
    overflow: hidden;
}

.floating-heart {
    position: absolute;
    font-size: 25px;
    opacity: 0;
    animation: floatUp 10s ease-in-out infinite;
    filter: drop-shadow(0 0 5px rgba(255, 20, 147, 0.5));
}

@keyframes floatUp {
    0% {
        bottom: -50px;
        opacity: 0;
        transform: translateX(0) rotate(0deg) scale(0.5);
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        bottom: 100vh;
        opacity: 0;
        transform: translateX(60px) rotate(360deg) scale(1.2);
    }
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 120px;
    padding: 50px 30px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.footer p {
    font-size: 1.4rem;
    font-weight: 500;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    margin-bottom: 15px;
    font-family: 'Playfair Display', serif;
}

.footer .date {
    font-size: 1rem;
    opacity: 0.7;
    font-weight: 300;
    letter-spacing: 2px;
}

/* Animasyonlar */
.animate-fade-in {
    animation: fadeIn 1.2s ease-out;
}

.animate-fade-in-delay {
    animation: fadeIn 1.2s ease-out 0.4s both;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 1.2s ease-out 0.8s both;
}

.animate-fade-in-delay-3 {
    animation: fadeIn 1.2s ease-out 1.2s both;
}

.animate-slide-up {
    animation: slideUp 1s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.animate-slide-up-delay {
    animation: slideUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

.animate-slide-up-delay-2 {
    animation: slideUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.4s both;
}

.animate-slide-up-delay-3 {
    animation: slideUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.6s both;
}

.animate-slide-up-delay-4 {
    animation: slideUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.8s both;
}

.animate-slide-up-delay-5 {
    animation: slideUp 1s cubic-bezier(0.4, 0, 0.2, 1) 1s both;
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Tasarım */
@media (max-width: 1024px) {
    .title-main {
        font-size: 4.5rem;
    }
    
    .title-name {
        font-size: 3.5rem;
    }
    
    .messages {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 40px 20px;
    }
    
    .title-line {
        font-size: 1.5rem;
        letter-spacing: 4px;
    }
    
    .title-main {
        font-size: 3.5rem;
    }
    
    .title-name {
        font-size: 2.8rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .heart {
        width: 100px;
        height: 100px;
    }
    
    .heart-emoji {
        font-size: 80px;
    }
    
    .left-heart {
        left: calc(50% - 150px);
    }
    
    .right-heart {
        right: calc(50% - 150px);
    }
    
    .love-text {
        font-size: 1.4rem;
        letter-spacing: 4px;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .messages {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .message-card {
        padding: 30px;
    }
    
    .special-content {
        padding: 50px 30px;
    }
    
    .special-content h2 {
        font-size: 2.5rem;
    }
    
    .poem-line {
        font-size: 1.2rem;
        line-height: 2;
    }
    
    .poem-signature {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .title-line {
        font-size: 1.2rem;
    }
    
    .title-main {
        font-size: 2.8rem;
    }
    
    .title-name {
        font-size: 2.2rem;
    }
    
    .heart {
        width: 80px;
        height: 80px;
    }
    
    .heart-emoji {
        font-size: 60px;
    }
    
    .left-heart {
        left: calc(50% - 120px);
    }
    
    .right-heart {
        right: calc(50% - 120px);
    }
    
    .message-card {
        padding: 25px;
    }
    
    .message-card h2 {
        font-size: 1.7rem;
    }
    
    .message-card p {
        font-size: 1rem;
    }
    
    .special-content {
        padding: 40px 25px;
    }
    
    .special-content h2 {
        font-size: 2rem;
    }
    
    .poem-line {
        font-size: 1.1rem;
    }
}