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

:root {
    --primary-gold: #FFD700;
    --dark-gold: #FFA500;
    --soft-white: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.98);
    --card-shadow: rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Noto Serif KR', serif;
    background: #990000;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Clean Background */
.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #990000 0%, #7E0000 100%);
    z-index: -1;
}

/* Minimal Floating Elements */
.floating-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
    opacity: 0.3;
}

.float-item {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.1) 0%, transparent 70%);
    animation: float 25s infinite ease-in-out;
}

.float-item:nth-child(1) {
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.float-item:nth-child(2) {
    top: 50%;
    right: -10%;
    animation-delay: 8s;
}

.float-item:nth-child(3) {
    bottom: -10%;
    left: 40%;
    animation-delay: 16s;
}

.float-item:nth-child(4),
.float-item:nth-child(5) {
    display: none;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
        opacity: 0.2;
    }
    50% {
        transform: translate(30px, -30px);
        opacity: 0.4;
    }
}

/* Header Styles */
header {
    position: relative;
    text-align: center;
    padding: 100px 20px 70px;
    margin-bottom: 60px;
    z-index: 1;
}

.header-content {
    max-width: 900px;
    margin: 0 auto;
}

.year-badge {
    display: inline-block;
    font-family: 'Playfair Display', serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--soft-white);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 10px 28px;
    border-radius: 50px;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    margin-bottom: 35px;
    letter-spacing: 3px;
    text-transform: uppercase;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-family: 'Noto Serif KR', serif;
    font-size: 4.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    letter-spacing: 6px;
    line-height: 1.2;
}

.subtitle {
    font-family: 'Noto Serif KR', serif;
    font-size: 1.6rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 15px;
    font-weight: 300;
    letter-spacing: 3px;
}

.greeting {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 300;
    letter-spacing: 2px;
    margin-bottom: 40px;
    line-height: 1.6;
}

.header-divider {
    width: 100px;
    height: 3px;
    background: rgba(255, 255, 255, 0.5);
    margin: 0 auto 30px;
    border-radius: 2px;
}

/* Kakao Browser Warning Banner */
.kakao-browser-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #FFE812;
    color: #000000;
    padding: 16px 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 9999;
    animation: slideDown 0.4s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.banner-content {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    text-align: center;
}

.banner-text {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: #000000;
}

.banner-subtext {
    font-size: 0.9rem;
    color: #333333;
    line-height: 1.4;
}

.banner-subtext strong {
    color: #000000;
    font-weight: 700;
}

.banner-close {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: #000000;
    cursor: pointer;
    padding: 8px 12px;
    line-height: 1;
    transition: opacity 0.2s;
}

.banner-close:hover {
    opacity: 0.7;
}

/* Kakao Open Chat Button */
.kakao-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: #FEE500;
    color: #000000;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(254, 229, 0, 0.4);
    font-family: 'Noto Serif KR', serif;
    letter-spacing: 0.5px;
}

.kakao-btn:hover {
    background: #FFD700;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(254, 229, 0, 0.6);
}

.kakao-btn:active {
    transform: translateY(-1px);
}

.kakao-icon {
    font-size: 1.3rem;
}

.kakao-text {
    font-weight: 600;
}

/* Card Container */
.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 35px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px 100px;
    position: relative;
    z-index: 1;
}

/* Card Styles - Clean & Premium */
.card {
    background: transparent;
    border-radius: 16px;
    overflow: hidden;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.2),
        0 0 1px rgba(0, 0, 0, 0.1);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    position: relative;
    /*border: 1px solid rgba(255, 255, 255, 0.8);*/
}

.card:hover {
    transform: translateY(-12px);
    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 215, 0, 0.3);
}

/* Remove complex shine effect for cleaner look */
.card-shine {
    display: none;
}

/* Card Media */
.card-media {
    width: 100%;
    height: 500px;
    overflow: hidden;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.card-media img,
.card-media video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.5s ease;
}

.card:hover .card-media img,
.card:hover .card-media video {
    transform: scale(1.05);
}

.media-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        transparent 60%,
        rgba(0, 0, 0, 0.1) 100%
    );
    pointer-events: none;
}

/* Card Content */
.card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    position: relative;
    /*background: var(--card-bg);*/
}

.card-content h3 {
    display: none;
}

.card-content p {
    display: none;
}

/* Download Button - Elegant & Simple */
.download-btn {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: #ffffff;
    border: none;
    padding: 15px 32px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.download-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.download-btn:hover::before {
    left: 100%;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.25);
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
}

.download-btn:active {
    transform: translateY(0);
}

.btn-icon {
    font-size: 1.1rem;
}

.btn-text {
    font-family: 'Noto Serif KR', serif;
}

/* Footer */
footer {
    position: relative;
    text-align: center;
    padding: 70px 20px 50px;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    z-index: 1;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
}

.footer-year {
    font-family: 'Noto Serif KR', serif;
    font-size: 1.3rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.88rem;
    letter-spacing: 0.5px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .card-container {
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
        gap: 30px;
        padding: 0 30px 80px;
    }
}

@media (max-width: 650px) {
    header {
        padding: 80px 20px 50px;
        margin-bottom: 50px;
    }

    header h1 {
        font-size: 3rem;
        letter-spacing: 4px;
    }

    .subtitle {
        font-size: 1.3rem;
        letter-spacing: 2px;
    }

    .greeting {
        font-size: 1.3rem;
    }

    .kakao-btn {
        font-size: 1rem;
        padding: 14px 28px;
    }

    .card-container {
        grid-template-columns: 1fr;
        gap: 25px;
        padding: 0 20px 60px;
    }

    .card-media {
        height: 400px;
    }

    .card-content {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .kakao-browser-banner {
        padding: 12px 16px;
    }

    .banner-text {
        font-size: 0.9rem;
        margin-bottom: 4px;
    }

    .banner-subtext {
        font-size: 0.8rem;
    }

    .banner-close {
        font-size: 1.3rem;
        padding: 4px 8px;
    }

    header {
        padding: 60px 20px 40px;
    }

    .year-badge {
        font-size: 0.8rem;
        padding: 8px 20px;
        letter-spacing: 2px;
    }

    header h1 {
        font-size: 2.2rem;
        letter-spacing: 3px;
    }

    .subtitle {
        font-size: 1.1rem;
        letter-spacing: 1.5px;
    }

    .greeting {
        font-size: 1.1rem;
        letter-spacing: 1px;
    }

    .card-container {
        padding: 0 16px 50px;
    }

    .card-media {
        height: 400px;
    }

    .card-content {
        padding: 16px;
    }

    .download-btn {
        padding: 13px 28px;
        font-size: 0.9rem;
    }

    .float-item {
        width: 250px;
        height: 250px;
    }
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background: rgba(255, 215, 0, 0.3);
    color: #1a1a1a;
}

::-moz-selection {
    background: rgba(255, 215, 0, 0.3);
    color: #1a1a1a;
}

/* Video Controls Styling */
video::-webkit-media-controls-panel {
    background: rgba(0, 0, 0, 0.5);
}