/* WebPerfClinic - Speed / Performance / Racing Aesthetics */
:root {
    /* Colors */
    --color-primary: #ea580c;
    --color-primary-hover: #c2410c;
    --color-primary-light: rgba(234, 88, 12, 0.06);
    --color-secondary: #16a34a;
    --color-accent: #ca8a04;
    --color-background: #fafaf9;
    --color-surface: #ffffff;
    --color-text: #1c1917;
    --color-text-muted: #57534e;
    --color-border: #d6d3d1;

    /* Header */
    --header-bg: #1c1917;
    --header-border: none;
    --header-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    --header-height: 64px;
    --logo-font-size: 1.125rem;
    --logo-font-weight: 800;
    --logo-text-transform: uppercase;
    --logo-letter-spacing: 0.06em;

    /* Footer */
    --footer-bg: #1c1917;
    --footer-text: #a8a29e;
    --footer-accent: #ea580c;

    /* Typography */
    --font-family-sans: 'Inter', system-ui, sans-serif;
    --font-family-heading: 'JetBrains Mono', 'Fira Code', monospace;
    --font-family-mono: 'JetBrains Mono', monospace;
    --font-size-base: 0.9375rem;
    --font-weight-heading: 800;
    --line-height-base: 1.6;
    --line-height-heading: 1.15;
    --heading-text-transform: uppercase;
    --heading-letter-spacing: 0.03em;

    /* Layout */
    --max-width-content: 1160px;
    --max-width-article: 740px;
    --border-radius: 2px;
    --border-radius-lg: 4px;
    --spacing-lg: 1.25rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.75rem;

    /* Cards */
    --card-border: 1px solid #d6d3d1;
    --card-shadow: none;
    --card-shadow-hover: 0 4px 12px rgba(234, 88, 12, 0.1);
    --card-transform-hover: none;
    --card-image-height: 190px;
    --card-padding: 1.25rem;

    /* Decorative */
    --accent-gradient: none;
    --header-decoration: repeating-linear-gradient(90deg, #ea580c 0px, #ea580c 20px, #1c1917 20px, #1c1917 24px);
    --code-bg: #1c1917;
    --code-text: #fbbf24;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1);

    /* Tags */
    --tag-bg: transparent;
    --tag-border: 1px solid #d6d3d1;
    --tag-radius: 2px;
    --tag-font-size: 0.6875rem;

    /* Pagination */
    --pagination-radius: 2px;
    --pagination-active-bg: #ea580c;
    --pagination-active-text: #ffffff;

    /* Nav */
    --nav-link-font-weight: 700;
    --nav-link-text-transform: uppercase;
    --nav-link-letter-spacing: 0.06em;
}

/* Racing-stripe header decoration */
.site-header::after {
    height: 4px;
    background: repeating-linear-gradient(
        90deg,
        #ea580c 0px, #ea580c 20px,
        transparent 20px, transparent 24px,
        #16a34a 24px, #16a34a 28px,
        transparent 28px, transparent 32px
    );
}

/* Logo on dark header */
.site-logo {
    color: #ea580c !important;
    font-family: 'JetBrains Mono', monospace;
}
.site-logo:hover {
    color: #fb923c !important;
}
.nav-link {
    color: rgba(255, 255, 255, 0.65);
    font-family: 'Inter', sans-serif;
    font-size: 0.8125rem;
}
.nav-link:hover {
    color: #ea580c;
}

/* Speed-indicator card left border */
.article-card {
    border-left: 3px solid transparent;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.article-card:hover {
    border-left-color: #ea580c;
}

/* Performance-meter category labels */
.article-card-category {
    color: #ea580c;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.625rem;
    letter-spacing: 0.12em;
    font-weight: 700;
}

/* Monospace article titles */
.article-card-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}

/* Tags as performance labels */
.tag-badge {
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
}
.tag-badge:hover {
    background: #ea580c;
    color: #ffffff;
    border-color: #ea580c;
}

/* Speed-colored green/orange/red for sidebar */
.sidebar-title,
.category-nav-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    border-bottom: 2px solid #ea580c;
}

/* Blockquote with performance orange */
.prose blockquote {
    border-left: 3px solid #ea580c;
    background: rgba(234, 88, 12, 0.04);
    border-radius: 0 2px 2px 0;
    font-style: normal;
}

/* Performance-style pagination */
.pagination-link {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 0.8125rem;
}
.pagination-link:hover {
    border-color: #ea580c;
    color: #ea580c;
}

/* Footer racing stripe */
.site-footer::before {
    content: '';
    display: block;
    height: 4px;
    background: repeating-linear-gradient(
        90deg,
        #ea580c 0px, #ea580c 30px,
        transparent 30px, transparent 34px
    );
}

/* Speed metric feel for article detail */
.article-title {
    letter-spacing: -0.01em;
}

/* Language Picker - Racing-stripe angular tiles */
.language-picker-section {
    background: #fafaf9;
    border: 1px solid #d6d3d1;
    border-radius: 2px;
    padding: 1.5rem;
    border-top: 4px solid #ea580c;
}
.language-picker-title {
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.875rem;
    font-weight: 800;
    color: #1c1917;
}
.language-picker-subtitle {
    font-size: 0.8125rem;
    color: #a8a29e;
}
.language-picker-grid {
    grid-template-columns: repeat(auto-fill, minmax(145px, 1fr));
    gap: 4px;
}
.language-picker-item {
    border: 1px solid #d6d3d1;
    border-radius: 2px;
    border-left: 3px solid #d6d3d1;
    padding: 0.5rem 0.75rem;
    background: #ffffff;
    flex-direction: row;
    gap: 0.5rem;
    align-items: center;
    transition: all 0.15s ease;
}
.language-picker-item:nth-child(3n+1) { border-left-color: #ea580c; }
.language-picker-item:nth-child(3n+2) { border-left-color: #16a34a; }
.language-picker-item:nth-child(3n+3) { border-left-color: #ca8a04; }
.language-picker-item:hover {
    background: rgba(234, 88, 12, 0.04);
    border-color: #ea580c;
    transform: none;
    box-shadow: 0 2px 8px rgba(234, 88, 12, 0.1);
}
.language-picker-item.active {
    background: #1c1917;
    border-color: #1c1917;
    border-left-color: #ea580c;
    border-radius: 2px;
}
.language-picker-item .language-native {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    font-weight: 700;
}
.language-picker-item .language-name {
    font-family: 'Inter', sans-serif;
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 0;
}