:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #cdaa5e; /* Gold */
    --text-color: #e0e0e0;
    --card-bg: rgba(22, 33, 62, 0.8);
    --hover-bg: rgba(205, 170, 94, 0.15);
}

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

body {
    font-family: 'Shippori Mincho', serif;
    background-color: var(--primary-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow-x: hidden;
}

/* Background Effect (Subtle Geometry) */
.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(205, 170, 94, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(75, 0, 130, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.container {
    width: 100%;
    max-width: 480px;
    padding: 40px 20px;
    text-align: center;
    animation: fadeIn 1s ease-out;
}

header {
    margin-bottom: 40px;
}

.profile-icon span {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    height: 80px;
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    font-size: 32px;
    color: var(--accent-color);
    margin-bottom: 16px;
    box-shadow: 0 0 15px rgba(205, 170, 94, 0.3);
    background-color: rgba(0,0,0,0.3);
}

h1 {
    font-size: 24px;
    letter-spacing: 2px;
    margin-bottom: 8px;
    font-weight: 600;
}

.subtitle {
    font-size: 14px;
    color: #a0a0a0;
    letter-spacing: 1px;
}

.links-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.divider {
    border: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--accent-color), transparent);
    margin: 16px 0;
    opacity: 0.5;
}

.link-card {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    background-color: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px; /* Pillow shape */
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    position: relative;
    overflow: hidden;
}

.link-card:hover {
    transform: translateY(-2px);
    background-color: var(--hover-bg);
    border-color: var(--accent-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.link-icon {
    width: 24px;
    height: 24px;
    margin-right: 16px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    flex-shrink: 0;
}

/* CSS-only Icons (Simple representations) */
.instagram::before {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 6px;
    border: 2px solid currentColor;
    box-sizing: border-box;
}
.instagram::after {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 2px solid currentColor;
    position: absolute;
    top: 50%;
    left: 28px; /* Adjusted manually for alignment */
    transform: translate(-50%, -50%);
}

.line {
    color: #06c755; /* Official LINE green hint */
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}
.line::before {
    content: 'L';
    color: var(--text-color); /* Keep it monochrome for the theme */
}

.threads {
    border-radius: 50%;
    border: 2px solid currentColor;
    position: relative;
}
.threads::before {
    content: '@';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -55%);
    font-family: sans-serif;
    font-weight: bold;
    font-size: 14px;
}

.link-text {
    flex-grow: 1;
    text-align: center;
    font-size: 15px;
    letter-spacing: 0.5px;
}

footer {
    margin-top: 40px;
    font-size: 12px;
    color: #666;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Mobile Adjustments */
@media (max-width: 480px) {
    .container {
        padding: 60px 20px;
    }
}