:root {
    --bg: #f8fbff;
    --bg-surface: #f1f5f9;
    --border: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --accent: #3b82f6;
    --transition-base: all 0.2s ease;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    --backdrop: rgba(248, 251, 255, 0.85);
    --shadow-dialog: 0 20px 50px rgba(59, 130, 246, 0.1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1a202c;
        --bg-surface: #2d3748;
        --border: #3d495c;
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
        --text-tertiary: #64748b;
        --backdrop: rgba(26, 32, 44, 0.7);
        --shadow-dialog: 0 20px 50px rgba(0, 0, 0, 0.6);
    }
}

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

body {
    background-color: var(--bg);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 680px;
    margin: 0 auto;
    padding: 80px 24px;
}

/* Header */
.header-section {
    margin-bottom: 40px;
}

.header-top {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    object-fit: cover;
    border: 1px solid var(--border);
    flex-shrink: 0;
}

.title-group {
    display: flex;
    align-items: baseline;
    gap: 12px;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
}

h1 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.name-small {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.subtitle-container {
    margin-bottom: 24px;
}

.subtitle-secondary {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-style: italic;
    opacity: 0.9;
    margin-bottom: 6px;
}

.subtitle-main {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* Links */
.social-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 32px;
}

.social-links a {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    text-decoration: none;
}

.social-links a:hover {
    background: var(--text-primary);
    color: var(--bg);
    border-color: var(--text-primary);
    transform: translateY(-2px);
}

.social-links svg {
    width: 22px;
    height: 22px;
    stroke-width: 2px;
}

.social-links .douban-icon {
    font-size: 1.2rem;
    font-weight: 600;
    font-family: var(--font-sans);
    line-height: 1;
}

/* Projects Section */
.section-title {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin: 60px 0 20px;
    font-weight: 700;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.about-content p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 1.2rem;
    line-height: 1.7;
}

.about-content p:last-child {
    margin-bottom: 0;
}

.about-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

.about-content a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition-base);
}

.about-content a:hover {
    border-bottom-color: var(--accent);
}

.project-list {
    display: flex;
    flex-direction: column;
}

.project-item {
    display: block;
    text-decoration: none;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
    transition: var(--transition-base);
    cursor: pointer;
}

.project-item.has-icon {
    display: flex;
    gap: 20px;
    align-items: center;
}

.project-item-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    flex-shrink: 0;
    object-fit: cover;
    border: 1px solid var(--border);
    background: var(--bg-surface);
}

.project-item-info {
    flex-grow: 1;
}

.project-item:hover {
    transform: translateX(4px);
}

.project-item-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 6px;
}

.project-item-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.project-item-tag {
    display: none;
}

.project-item-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Dialog / Modal */
dialog[open] {
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 0;
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    background: var(--bg);
    color: var(--text-primary);
    box-shadow: var(--shadow-dialog);
    margin: auto;
    display: flex;
    flex-direction: column;
    outline: none;
}

dialog::backdrop {
    background: var(--backdrop);
    backdrop-filter: blur(8px);
}

.dialog-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--bg);
    z-index: 10;
}

.dialog-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.dialog-header-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: cover;
    border: 1px solid var(--border);
    flex-shrink: 0;
}

.dialog-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-tertiary);
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.dialog-close:hover {
    background: var(--bg-surface);
    color: var(--text-primary);
}

.dialog-body {
    padding: 32px;
    flex-grow: 1;
    flex-shrink: 1;
    flex-basis: auto;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    min-height: 500px;
    width: 100%;
    position: relative;
}

/* Project Screenshot in Dialog */
.project-image-container {
    width: 100%;
    margin-bottom: 32px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    line-height: 0;
    /* Fix extra space below image */
}

.project-screenshot {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}

.project-image-container.is-icon {
    background: transparent;
    border: none;
    display: flex;
    justify-content: center;
    margin: 0 auto 32px;
}

.project-image-container.is-icon .project-screenshot {
    width: 120px;
    height: 120px;
    border-radius: 24px;
}

.dialog-project-tags {
    display: none;
}

.dialog-tag {
    font-size: 0.7rem;
    padding: 4px 10px;
    background: var(--bg-surface);
    color: var(--text-secondary);
    border-radius: 100px;
    border: 1px solid var(--border);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

#githubBadgeContainer {
    height: 30px;
    display: flex;
    align-items: center;
}

.dialog-body h3 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 32px 0 16px;
    color: var(--text-primary);
}

.dialog-body p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.dialog-body ul {
    list-style: none;
    margin-bottom: 32px;
}

.dialog-body li {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    padding-left: 16px;
    position: relative;
}

.dialog-body li::before {
    content: "–";
    position: absolute;
    left: 0;
    color: #ccc;
}

.dialog-footer-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 32px;
}

.github-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--text-primary);
    color: var(--bg);
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-base);
}

.github-link-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.chrome-store-btn, .greasyfork-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 16px;
    padding: 10px 20px;
    background: #ffffff;
    border: 1px solid #dadce0;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-base);
}

.chrome-store-btn {
    color: #1a73e8;
}

.greasyfork-btn {
    color: #333333;
}

@media (prefers-color-scheme: dark) {
    .chrome-store-btn, .greasyfork-btn {
        background: #202124;
        border-color: #3c4043;
    }
    .chrome-store-btn {
        color: #8ab4f8;
    }
    .greasyfork-btn {
        color: #e8eaed;
    }
}

.chrome-store-btn:hover, .greasyfork-btn:hover {
    background: #f8f9fa;
    border-color: #d2d4d7;
    box-shadow: 0 1px 3px rgba(60, 64, 67, 0.1);
}

@media (prefers-color-scheme: dark) {
    .chrome-store-btn:hover, .greasyfork-btn:hover {
        background: #28292c;
        border-color: #5f6368;
    }
}

footer {
    margin-top: 80px;
    padding-bottom: 40px;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}