:root {
    --color-bg: #0a0a0a;
    --color-surface: #1a1a1a;
    --color-surface-elevated: #242424;
    --color-text-primary: #fafafa;
    --color-text-secondary: #a0a0a0;
    --color-text-tertiary: #606060;
    --color-accent: #00ffaa;
    --color-border: #2a2a2a;
    
    --font-display: 'Space Mono', monospace;
    --font-body: 'DM Sans', -apple-system, sans-serif;
    
    --spacing-unit: 8px;
    --radius: 2px;
}

[data-theme="light"] {
    --color-bg: #fafafa;
    --color-surface: #ffffff;
    --color-surface-elevated: #f5f5f5;
    --color-text-primary: #0a0a0a;
    --color-text-secondary: #606060;
    --color-text-tertiary: #a0a0a0;
    --color-accent: #00cc88;
    --color-border: #e0e0e0;
}

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

body {
    background: var(--color-bg);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 4);
}

/* Header */
header {
    padding: calc(var(--spacing-unit) * 8) 0 calc(var(--spacing-unit) * 4);
    border-bottom: 1px solid var(--color-border);
}

.header-content {
    display: grid;
    grid-template-columns: 2fr auto auto 1fr;
    gap: calc(var(--spacing-unit) * 2);
    align-items: end;
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.theme-toggle:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(0, 255, 170, 0.05);
}

.github-link {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: calc(var(--spacing-unit) * 1);
    text-decoration: none;
}

.github-link:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(0, 255, 170, 0.05);
}

.theme-icon .sun {
    display: none;
}

.theme-icon .moon {
    display: block;
}

[data-theme="light"] .theme-icon .sun {
    display: block;
}

[data-theme="light"] .theme-icon .moon {
    display: none;
}

.branding h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: calc(var(--spacing-unit) * 2);
    line-height: 1;
}

.branding p {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    font-weight: 400;
}

.meta {
    text-align: right;
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.meta-count {
    font-size: 3rem;
    color: var(--color-accent);
    display: block;
    line-height: 1;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.header-actions {
    margin-top: calc(var(--spacing-unit) * 3);
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    justify-content: flex-end;
}

.action-btn {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    border-radius: var(--radius);
    font-family: var(--font-display);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(0, 255, 170, 0.05);
}

/* Search Section */
.search-section {
    padding: calc(var(--spacing-unit) * 12) 0 calc(var(--spacing-unit) * 8);
    position: relative;
}

.search-wrapper {
    position: relative;
    animation: slideIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.search-input {
    width: 100%;
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    color: var(--color-text-primary);
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    padding: calc(var(--spacing-unit) * 4) calc(var(--spacing-unit) * 6);
    border-radius: var(--radius);
    outline: none;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.search-input:focus {
    border-color: var(--color-accent);
    background: var(--color-surface-elevated);
    box-shadow: 0 0 0 4px rgba(0, 255, 170, 0.1);
}

.search-input::placeholder {
    color: var(--color-text-tertiary);
}

.search-hint {
    margin-top: calc(var(--spacing-unit) * 2);
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    font-family: var(--font-display);
}

.search-hint kbd {
    background: var(--color-surface);
    padding: 2px 8px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    font-family: var(--font-display);
    font-size: 0.75rem;
}

/* Filters */
.filters {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 6);
    overflow-x: auto;
    padding-bottom: calc(var(--spacing-unit) * 1);
}

.filter-tag {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    border-radius: var(--radius);
    font-family: var(--font-display);
    font-size: 0.875rem;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.filter-tag:hover,
.filter-tag.active {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(0, 255, 170, 0.05);
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: calc(var(--spacing-unit) * 3);
    padding-bottom: calc(var(--spacing-unit) * 12);
}

.skill-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: calc(var(--spacing-unit) * 4);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.skill-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

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

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.skill-name {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.skill-category {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.skill-download {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.skill-download:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(0, 255, 170, 0.05);
}

.skill-description {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: calc(var(--spacing-unit) * 1);
}

.skill-rating {
    margin-top: calc(var(--spacing-unit) * 3);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: calc(var(--spacing-unit) * 2);
    font-family: var(--font-display);
}

.rating-label {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.rating-stars {
    display: inline-flex;
    gap: 6px;
}

.rating-star {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-tertiary);
    width: 28px;
    height: 28px;
    border-radius: var(--radius);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.rating-star.active {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: rgba(0, 255, 170, 0.08);
}

.rating-star:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.rating-summary {
    margin-top: calc(var(--spacing-unit) * 2);
    display: flex;
    align-items: baseline;
    gap: 6px;
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
}

.rating-summary-label {
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.rating-summary-value {
    color: var(--color-accent);
    font-weight: 700;
}

/* Skill Viewer Modal */
.skill-viewer-loading,
.skill-viewer-error {
    text-align: center;
    padding: calc(var(--spacing-unit) * 8) 0;
    color: var(--color-text-secondary);
}

.skill-viewer-error h3 {
    color: var(--color-text-primary);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.skill-viewer-header {
    margin-bottom: calc(var(--spacing-unit) * 4);
    padding-bottom: calc(var(--spacing-unit) * 3);
    border-bottom: 2px solid var(--color-accent);
}

.skill-viewer-header h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--color-text-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.skill-viewer-meta {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    align-items: center;
}

.skill-viewer-body {
    line-height: 1.8;
}

/* Markdown Content Styles */
.markdown-content {
    font-size: 1rem;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4 {
    font-family: var(--font-display);
    color: var(--color-text-primary);
    margin-top: calc(var(--spacing-unit) * 6);
    margin-bottom: calc(var(--spacing-unit) * 3);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.markdown-content h1 {
    font-size: 2rem;
    border-bottom: 2px solid var(--color-accent);
    padding-bottom: calc(var(--spacing-unit) * 3);
    margin-top: calc(var(--spacing-unit) * 8);
}

.markdown-content h2 {
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-top: calc(var(--spacing-unit) * 8);
}

.markdown-content h3 {
    font-size: 1.25rem;
    margin-top: calc(var(--spacing-unit) * 5);
}

.markdown-content h4 {
    font-size: 1.125rem;
    margin-top: calc(var(--spacing-unit) * 4);
}

.markdown-content p {
    margin-bottom: calc(var(--spacing-unit) * 3);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.markdown-content ul,
.markdown-content ol {
    margin-bottom: calc(var(--spacing-unit) * 4);
    padding-left: calc(var(--spacing-unit) * 5);
}

.markdown-content li {
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

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

.markdown-content code {
    background: rgba(0, 255, 170, 0.1);
    color: var(--color-accent);
    padding: 3px 8px;
    border-radius: var(--radius);
    font-family: var(--font-display);
    font-size: 0.875rem;
    border: 1px solid rgba(0, 255, 170, 0.2);
}

.markdown-content pre {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius);
    padding: calc(var(--spacing-unit) * 4);
    overflow-x: auto;
    margin-bottom: calc(var(--spacing-unit) * 4);
    line-height: 1.6;
}

.markdown-content pre code {
    background: transparent;
    padding: 0;
    color: var(--color-text-primary);
    border: none;
    font-size: 0.9375rem;
}

.markdown-content blockquote {
    border-left: 4px solid var(--color-accent);
    padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 4);
    margin: calc(var(--spacing-unit) * 4) 0;
    background: var(--color-surface-elevated);
    color: var(--color-text-secondary);
    font-style: italic;
    border-radius: var(--radius);
}

.markdown-content blockquote p {
    margin-bottom: 0;
}

.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin: calc(var(--spacing-unit) * 4) 0;
    font-size: 0.9375rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.markdown-content th,
.markdown-content td {
    border: 1px solid var(--color-border);
    padding: calc(var(--spacing-unit) * 2.5) calc(var(--spacing-unit) * 3);
    text-align: left;
}

.markdown-content th {
    background: var(--color-surface-elevated);
    color: var(--color-text-primary);
    font-family: var(--font-display);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--color-accent);
}

.markdown-content td {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.markdown-content tbody tr:hover {
    background: rgba(0, 255, 170, 0.03);
}

.markdown-content a {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

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

.markdown-content hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: calc(var(--spacing-unit) * 6) 0;
}

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

.markdown-content em {
    color: var(--color-text-secondary);
    font-style: italic;
}

.markdown-content input[type="checkbox"] {
    margin-right: calc(var(--spacing-unit) * 1);
    accent-color: var(--color-accent);
}

/* Light theme markdown adjustments */
[data-theme="light"] .markdown-content code {
    background: rgba(0, 204, 136, 0.1);
    border-color: rgba(0, 204, 136, 0.2);
}

[data-theme="light"] .markdown-content tbody tr:hover {
    background: rgba(0, 204, 136, 0.03);
}

.tag {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-tertiary);
    padding: 4px 10px;
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-family: var(--font-display);
}

/* Thanks link styling */
.thanks-link {
    margin: calc(var(--spacing-unit) * 3) 0;
}

.thanks-link a {
    display: inline-flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    color: var(--color-accent);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 1rem;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.thanks-link a:hover {
    background: var(--color-accent);
    color: var(--color-bg);
}

.thanks-link svg {
    flex-shrink: 0;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: calc(var(--spacing-unit) * 16) 0;
    display: none;
}

.empty-state.visible {
    display: block;
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: calc(var(--spacing-unit) * 3);
    opacity: 0.3;
}

.empty-state h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.empty-state p {
    color: var(--color-text-secondary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.visible {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    max-width: 700px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    padding: calc(var(--spacing-unit) * 6);
    animation: modalSlide 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-content-wide {
    max-width: 1000px;
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: calc(var(--spacing-unit) * 3);
    right: calc(var(--spacing-unit) * 3);
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.modal-close:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(0, 255, 170, 0.05);
}

.modal-content h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: calc(var(--spacing-unit) * 4);
    color: var(--color-text-primary);
    border-left: 3px solid var(--color-accent);
    padding-left: calc(var(--spacing-unit) * 3);
}

.modal-content h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    margin-top: calc(var(--spacing-unit) * 4);
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
}

.modal-body p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.modal-body ul {
    list-style: none;
    padding: 0;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.modal-body li {
    color: var(--color-text-secondary);
    line-height: 1.8;
    padding-left: calc(var(--spacing-unit) * 3);
    position: relative;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.modal-body li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-family: var(--font-display);
}

.modal-body strong {
    color: var(--color-text-primary);
    font-weight: 700;
}

.modal-body code,
.modal-body kbd {
    background: rgba(0, 255, 170, 0.1);
    color: var(--color-accent);
    padding: 2px 8px;
    border-radius: var(--radius);
    font-family: var(--font-display);
    font-size: 0.875rem;
}

.modal-body kbd {
    border: 1px solid var(--color-border);
}

.repo-credit {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-accent);
    padding: calc(var(--spacing-unit) * 3);
    border-radius: var(--radius);
    margin: calc(var(--spacing-unit) * 2) 0 calc(var(--spacing-unit) * 4);
}

.repo-credit a {
    color: var(--color-accent);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    transition: opacity 0.2s ease;
}

.repo-credit a:hover {
    opacity: 0.8;
}

.repo-credit p {
    margin-top: calc(var(--spacing-unit) * 2);
    margin-bottom: 0;
    font-size: 0.9375rem;
}

/* Light theme adjustments */
[data-theme="light"] .modal {
    background: rgba(255, 255, 255, 0.9);
}

[data-theme="light"] .action-btn:hover,
[data-theme="light"] .filter-tag:hover,
[data-theme="light"] .filter-tag.active,
[data-theme="light"] .skill-download:hover,
[data-theme="light"] .modal-close:hover,
[data-theme="light"] .theme-toggle:hover,
[data-theme="light"] .github-link:hover {
    background: rgba(0, 204, 136, 0.1);
}

[data-theme="light"] .search-input:focus {
    box-shadow: 0 0 0 4px rgba(0, 204, 136, 0.1);
}

[data-theme="light"] .modal-body code,
[data-theme="light"] .modal-body kbd {
    background: rgba(0, 204, 136, 0.1);
}

.modal-meta,
.modal-footer {
    margin-top: calc(var(--spacing-unit) * 6);
    padding-top: calc(var(--spacing-unit) * 4);
    border-top: 1px solid var(--color-border);
    font-size: 0.875rem;
}

.modal-footer p {
    margin-bottom: calc(var(--spacing-unit) * 1);
    font-family: var(--font-display);
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        grid-template-columns: 1fr auto auto;
        gap: calc(var(--spacing-unit) * 2);
    }
    
    .branding {
        grid-column: 1 / -1;
    }
    
    .theme-toggle,
    .github-link {
        grid-row: 2;
        margin-bottom: 0;
    }
    
    .meta {
        grid-column: 1 / -1;
        text-align: left;
    }
    
    .header-actions {
        justify-content: flex-start;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        padding: calc(var(--spacing-unit) * 4);
        width: 95%;
        max-height: 90vh;
    }
    
    .modal-content h2 {
        font-size: 1.5rem;
    }
}