/* ===== CSS Variables ===== */
:root {
    --accent: #1A1A1A;
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --text-muted: #999999;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F6F8FA;
    --bg-tertiary: #F0F0F0;
    --border-light: #E5E5E5;
    --border-medium: #CCCCCC;
    --border-dark: #999999;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ===== Reset ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background: linear-gradient(180deg, #F6F8FA 0%, #FFFFFF 20%, #FFFFFF 80%, #F0F0F0 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: opacity 0.2s;
}

a:hover {
    opacity: 0.75;
}

/* ===== Main Wrap ===== */
#main-wrap {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    flex: 1;
}

/* ===== Profile Header ===== */
.profile-header {
    padding: 96px 24px 32px;
    text-align: left;
}

.profile-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: 2px;
    margin-bottom: 8px;
}

#profile-name {
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    animation: animloader 5s linear infinite;
}

@keyframes animloader {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.profile-bio {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    margin-left: 2px;
}

.profile-social {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-light);
    background: var(--bg-primary);
    transition: all 0.2s;
    overflow: hidden;
    opacity: 1;
}

.social-btn:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.social-btn img {
    width: 22px;
    height: 22px;
    object-fit: contain;
}

.social-btn span {
    font-size: 16px;
    font-weight: 700;
    color: var(--accent);
}

/* ===== Category Section ===== */
#categories-container {
    padding-top: 0;
}

.category-section {
    margin: 0 0 28px;
    padding: 0 24px;
}

.category-header {
    text-align: left;
    margin-bottom: 20px;
}

.category-header h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 6px;
}

.category-header .cat-subtitle {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 400;
}

/* ===== Card Grid ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

/* ===== Card ===== */
.card {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    transition: all 0.25s ease;
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
}

.card:hover {
    border-color: var(--border-dark);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.5px;
}

.card-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.card-logo {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    object-fit: contain;
    flex-shrink: 0;
}

.card-body {
    flex: 1;
    min-width: 0;
}

.card-arrow {
    font-size: 18px;
    color: var(--text-muted);
    transition: transform 0.2s, color 0.2s;
    flex-shrink: 0;
}

.card:hover .card-arrow {
    transform: translateX(4px);
    color: var(--accent);
}

/* ===== Footer ===== */
.announce-wrap {
    position: fixed;
    top: 16px;
    right: 24px;
    z-index: 50;
    max-width: 300px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.announce-card {
    position: relative;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 8px 16px 12px;
    max-width: 420px;
    width: 100%;
    box-shadow: var(--shadow-sm);
    animation: announceDrop 0.35s ease-out;
    transition: box-shadow 0.2s, transform 0.2s;
}

.announce-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

@keyframes announceDrop {
    from { opacity: 0; transform: translateY(-16px); }
    to { opacity: 1; transform: translateY(0); }
}

.announce-close {
    position: absolute;
    top: 6px;
    right: 8px;
    background: none;
    border: none;
    font-size: 16px;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.announce-close:hover {
    color: var(--accent);
}

.announce-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 4px;
    padding-right: 18px;
}

.announce-body {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.announce-body p {
    margin-bottom: 4px;
}

.announce-body a {
    color: var(--accent);
    text-decoration: underline;
}

.announce-body code {
    background: var(--bg-secondary);
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 12px;
}

.announce-body ul, .announce-body ol {
    padding-left: 18px;
    margin-bottom: 6px;
}

/* ===== Footer ===== */
.footer {
    border-top: 1px solid var(--border-light);
    background: var(--bg-secondary);
    padding: 20px 24px;
    text-align: center;
}

.footer-row {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 14px;
    color: var(--text-muted);
}

.footer-row:first-child {
    margin-bottom: 8px;
}

.footer-row .sep {
    display: none;
}

.footer a {
    color: var(--text-secondary);
    font-size: 14px;
}

.footer a:hover {
    color: var(--accent);
    opacity: 1;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .profile-header {
        padding: 56px 16px 24px;
    }
    .profile-title {
        font-size: 36px;
    }
    .category-section {
        padding: 0 16px;
    }
    .card-grid {
        grid-template-columns: 1fr;
    }
}