:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    --card-bg: rgba(255, 255, 255, 0.8);
    --text-main: #1e293b;
    --text-muted: #64748b;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius: 12px;
}

[data-theme="dark"] {
    --primary: #818cf8;
    --primary-hover: #a5b4fc;
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --white: #1e293b;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg-gradient);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    transition: background 0.3s ease;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    padding: 60px 0 40px;
    text-align: center;
}

.profile-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid var(--white);
    box-shadow: var(--shadow-lg);
    margin-bottom: 20px;
    transition: transform 0.3s ease;
    object-fit: cover;
}

.profile-img:hover {
    transform: scale(1.05);
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--primary), #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

.tagline {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 30px;
}

nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

nav a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.2s ease;
}

nav a:hover, nav a.active {
    background: var(--primary);
    color: white;
}

/* List Styles */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 60px;
}

.post-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-decoration: none;
    color: inherit;
    display: block;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.post-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: flex;
    gap: 15px;
}

.post-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-main);
}

.post-excerpt {
    color: var(--text-muted);
}

/* Footer Styles */
footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(0,0,0,0.05);
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
}

.beian-link {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-decoration: none;
    transition: color 0.2s;
}

.beian-link:hover {
    color: var(--primary);
}

/* Content Page */
.content-section {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    margin-bottom: 60px;
}

.content-section h2 {
    margin: 30px 0 15px;
}

.content-section p {
    margin-bottom: 20px;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: fadeIn 0.8s ease forwards;
}