@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
    --primary: #fb7299;
    --primary-dark: #e05878;
    --bg: #c7dbef;
    --bg-card: rgba(255, 255, 255, 0.45);
    --bg-card-hover: rgba(255, 255, 255, 0.62);
    --text: #1a1a2e;
    --text-secondary: #4a5a7a;
    --border: rgba(255, 255, 255, 0.7);
    --border-soft: rgba(255, 255, 255, 0.4);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    line-height: 1.6;
}

/* ============ NAV ============ */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 16px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(199, 219, 239, 0.55);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    z-index: 1000;
    border-bottom: 1px solid var(--border-soft);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 4px 18px rgba(31, 60, 100, 0.08);
}

.nav-logo {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--primary);
    cursor: pointer;
}

.nav-links {
    display: flex;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover { color: var(--text); }

/* ============ PROFILE HEADER ============ */
.profile-header {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 100px 5% 0;
    max-width: 1000px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease;
}

.profile-avatar {
    width: 88px;
    height: 88px;
    border-radius: 50%;
    border: 3px solid rgba(251, 114, 153, 0.3);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
    flex-shrink: 0;
}

.profile-name {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 900;
    letter-spacing: -0.5px;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============ SECTIONS ============ */
section {
    padding: 30px 5% 90px;
    max-width: 1000px;
    margin: 0 auto;
}

.section-title {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 14px;
}

.section-title span { color: var(--primary); }

.section-subtitle {
    color: var(--text-secondary);
    font-size: 0.98rem;
    margin-bottom: 44px;
}

/* ============ ABOUT ============ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 40px;
    align-items: start;
}

.about-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: 16px;
    padding: 32px;
    border: 1px solid var(--border);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.7),
        0 8px 28px rgba(31, 60, 100, 0.12);
}

.about-card h3 {
    font-size: 1.2rem;
    margin-bottom: 18px;
    color: var(--primary);
}

.about-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.info-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 0;
    border-bottom: 1px solid var(--border);
}

.info-label {
    color: var(--text-secondary);
    font-size: 0.88rem;
    min-width: 72px;
}

.info-value { font-weight: 500; }

.about-text p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 14px;
}

.about-text strong { color: var(--text); }

/* ============ CONTACT ============ */
.contact-section {
    text-align: center;
}

.contact-section h2 span { color: var(--primary); }

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    max-width: 720px;
    margin: 0 auto;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 32px 24px;
    background: var(--bg-card);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border);
    border-radius: 16px;
    text-decoration: none;
    color: var(--text);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.7),
        0 8px 28px rgba(31, 60, 100, 0.12);
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brand-color, var(--primary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.contact-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    border-color: var(--brand-color, var(--primary));
}

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

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-bg, rgba(251, 114, 153, 0.12));
    transition: all 0.3s ease;
}

.contact-card:hover .contact-icon {
    background: var(--brand-color, var(--primary));
}

.contact-card:hover .contact-icon svg {
    fill: white !important;
    color: white !important;
}

.contact-icon svg {
    transition: all 0.3s ease;
}

.contact-name {
    font-weight: 700;
    font-size: 1rem;
}

.contact-id {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

/* Brand colors */
.contact-card.bili { --brand-color: #fb7299; --brand-bg: rgba(251, 114, 153, 0.18); }
.contact-card.xhs  { --brand-color: #ff2442; --brand-bg: rgba(255, 36, 66, 0.15); }
.contact-card.xhs .contact-icon svg text { transition: fill 0.3s ease; }
.contact-card.xhs:hover .contact-icon svg text { fill: white; }
.contact-card.dy   { --brand-color: #1a1a1a; --brand-bg: rgba(60, 60, 60, 0.12); }
.contact-card.dy:hover .contact-icon { background: #1a1a1a; }
.contact-card.qq   { --brand-color: #12b7f5; --brand-bg: rgba(18, 183, 245, 0.18); }

/* ============ TOAST ============ */
.toast {
    position: fixed;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 14px 26px;
    border-radius: 12px;
    font-size: 0.92rem;
    font-weight: 600;
    z-index: 9999;
    opacity: 0;
    transition: all 0.4s ease;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.7),
        0 8px 30px rgba(31, 60, 100, 0.18);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ============ FOOTER ============ */
footer {
    text-align: center;
    padding: 36px 5%;
    border-top: 1px solid var(--border-soft);
    color: var(--text-secondary);
    font-size: 0.84rem;
}

footer a {
    color: var(--primary);
    text-decoration: none;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .nav-links { gap: 18px; }
    .nav-links a { font-size: 0.85rem; }
    .about-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .profile-avatar {
        width: 72px;
        height: 72px;
    }
    .profile-header {
        padding: 80px 5% 0;
        gap: 14px;
    }
    section { padding: 24px 5% 60px; }
}