/* ===== Brutalist Design Tokens ===== */
:root {
    /* Fluid typography scales */
    /* Base size 16px to 20px */
    --fs-base: clamp(1rem, 0.9vw + 0.8rem, 1.25rem);
    /* Steps */
    --fs-sm: clamp(0.75rem, 0.7vw + 0.6rem, 0.875rem);
    --fs-xs: clamp(0.65rem, 0.6vw + 0.5rem, 0.75rem);
    
    --fs-lg: clamp(1.25rem, 1.2vw + 1rem, 1.6rem);
    --fs-xl: clamp(1.5rem, 1.8vw + 1.1rem, 2.2rem);
    --fs-2xl: clamp(2rem, 3vw + 1.4rem, 3.2rem);
    --fs-3xl: clamp(2.5rem, 4vw + 1.8rem, 4.5rem);

    /* OKLCH Color Palette - Industrial Dark */
    --color-bg-base: oklch(0.18 0.01 260); /* Stark, dark slate */
    --color-bg-surface: oklch(0.22 0.01 260); /* Slightly lighter panel */
    --color-bg-elevated: oklch(0.26 0.01 260); /* Hover/elevated */
    --color-bg-inset: oklch(0.15 0.01 260);
    
    --color-text-primary: oklch(0.95 0.01 260); /* Sharp white/grey */
    --color-text-secondary: oklch(0.70 0.01 260); /* Dimmed text */
    --color-text-tertiary: oklch(0.50 0.01 260); /* Very dim */

    --color-border-heavy: oklch(0.45 0.01 260);
    --color-border: oklch(0.35 0.01 260);
    --color-border-faint: oklch(0.25 0.01 260);

    /* Semantic Accents - Unapologetic & RAW */
    --color-accent: oklch(0.70 0.12 250); /* Desaturated blue, utility focus */
    --color-accent-dim: oklch(0.30 0.04 250);
    --color-accent-bg: oklch(0.24 0.02 250);
    
    --color-success: oklch(0.75 0.18 140); /* Sharp, harsh green */
    --color-success-bg: oklch(0.25 0.05 140);
    --color-success-border: oklch(0.4 0.08 140);
    
    --color-warning: oklch(0.80 0.18 80); /* Bright amber */
    --color-warning-bg: oklch(0.28 0.05 80);
    --color-warning-border: oklch(0.45 0.08 80);

    --color-danger: oklch(0.65 0.22 25); /* Alarm red */
    --color-danger-bg: oklch(0.25 0.06 25);
    --color-danger-border: oklch(0.4 0.1 25);

    /* Typography families */
    --mono: 'JetBrains Mono', monospace;
    --sans: 'Inter', sans-serif;

    /* Spacing scales */
    --sp-xs: clamp(0.25rem, 0.4vw + 0.2rem, 0.5rem);
    --sp-sm: clamp(0.5rem, 0.8vw + 0.3rem, 0.75rem);
    --sp-md: clamp(1rem, 1.5vw + 0.6rem, 1.5rem);
    --sp-lg: clamp(1.5rem, 2vw + 1rem, 2.5rem);
    --sp-xl: clamp(2rem, 3.5vw + 1.5rem, 4rem);
    --sp-2xl: clamp(3.5rem, 6vw + 2rem, 6rem);
    --sp-3xl: clamp(5rem, 10vw + 3rem, 10rem);
    --sp-xk: clamp(4rem, 8vw + 2rem, 8rem);
    
    /* Animation Easing */
    --ease-brutal: cubic-bezier(0.19, 1, 0.22, 1);
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== Base Reset & Structural Styles ===== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    overflow-x: hidden;
    scroll-behavior: smooth;
}

body.site-body {
    background-color: var(--color-bg-base);
    color: var(--color-text-primary);
    font-family: var(--sans);
    font-size: var(--fs-base);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, .font-sans { 
    font-family: var(--sans); 
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
h4 { font-size: var(--fs-base); }

.font-mono, .mono {
    font-family: var(--mono);
}

a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color 0.2s var(--ease-brutal), background 0.2s var(--ease-brutal);
}

/* ===== Accessibility ===== */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    z-index: 9999;
    padding: var(--sp-sm) var(--sp-md);
    background: var(--color-text-primary);
    color: var(--color-bg-base);
    font-family: var(--mono);
    font-size: var(--fs-sm);
    font-weight: 800;
    text-transform: uppercase;
}
.skip-link:focus { top: 0; }

:focus-visible {
    outline: 2px solid var(--color-text-primary);
    outline-offset: 4px;
}

/* ===== Utilitarian Layout System ===== */
.site-main {
    flex-grow: 1;
    width: 100%;
    /* Keep a central constraints, but allow breakout */
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--sp-2xl) var(--sp-lg);
}

/* Core Flex Grid Utilities */
.flex-row { display: flex; align-items: center; }
.flex-col { display: flex; flex-direction: column; }
.justify-between { justify-content: space-between; }
.gap-xs { gap: var(--sp-xs); }
.gap-sm { gap: var(--sp-sm); }
.gap-md { gap: var(--sp-md); }
.gap-lg { gap: var(--sp-lg); }
.gap-xl { gap: var(--sp-xl); }

.text-dim { color: var(--color-text-secondary); }
.text-faint { color: var(--color-text-tertiary); }

/* Remove 'mobile only' on desktop, vice versa */
.desktop-only { display: inline; }
.mobile-only { display: none; }
@media (max-width: 768px) {
    .desktop-only { display: none; }
    .mobile-only { display: block; }
}

/* ===== Structural Navigation (Brutalist Top Bar) ===== */
.sys-nav {
    border-bottom: 2px solid var(--color-border-heavy);
    background: var(--color-bg-base);
    position: sticky;
    top: 0;
    z-index: 100;
}
.sys-nav-inner {
    padding: var(--sp-sm) var(--sp-md);
    font-family: var(--mono);
    text-transform: uppercase;
    font-size: var(--fs-xs);
    font-weight: 800;
    letter-spacing: 0.1em;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.sys-brand, .sys-links {
    display: flex;
    align-items: center;
    gap: var(--sp-md);
}
.sys-title {
    color: var(--color-text-primary);
}
.sys-divider {
    color: var(--color-border);
}
.sys-nav-link {
    color: var(--color-text-secondary);
    padding: var(--sp-xs) var(--sp-sm);
    border: 1px solid transparent;
}
.sys-nav-link:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-elevated);
    border-color: var(--color-border);
}
.sys-nav-link.active {
    color: var(--color-bg-base);
    background: var(--color-text-primary);
}
.status-bar-links {
    flex-wrap: wrap;
    flex: 0 0 auto;
    white-space: nowrap;
}

/* ===== Brutalist Footer ===== */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: var(--sp-xl) var(--sp-md);
    text-align: left;
    font-family: var(--mono);
    font-size: var(--fs-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}
.site-footer a {
    color: var(--color-text-secondary);
    text-decoration: underline;
    text-decoration-color: var(--color-border);
    text-underline-offset: 4px;
}
.site-footer a:hover {
    color: var(--color-text-primary);
    text-decoration-color: var(--color-text-primary);
    background: transparent;
}

/* ===== Panels / Grids (No Cards!) ===== */
/* Instead of floating 'cards', we use structural grids with definitive lines */
.data-grid {
    display: grid;
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
    /* By default 1 col on mobile, expanded via queries */
}
.data-cell {
    background: var(--color-bg-base);
    padding: var(--sp-lg);
    transition: background 0.4s var(--ease-out-expo);
}
.data-cell:hover {
    background: var(--color-bg-inset);
}
.data-cell-accent { border-top: 4px solid var(--color-text-primary); }
.data-cell-green { border-top: 4px solid var(--color-success); }
.data-cell-amber { border-top: 4px solid var(--color-warning); }
.data-cell-red { border-top: 4px solid var(--color-danger); }

/* ===== Metrics Typography ===== */
.metric-val, .evidence-val {
    font-family: var(--mono);
    color: var(--color-text-primary);
    font-size: var(--fs-3xl);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.05em;
}
.metric-val-green { color: var(--color-success); }
.metric-val-red { color: var(--color-danger); }
.metric-val-amber { color: var(--color-warning); }

.metric-lbl {
    color: var(--color-text-secondary);
    font-family: var(--sans);
    font-size: var(--fs-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: var(--sp-xs);
    display: block;
}

/* ===== Unstyled Buttons ===== */
.btn-primary, .btn-secondary, .exec-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--mono);
    font-size: var(--fs-sm);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    padding: var(--sp-sm) var(--sp-lg);
    cursor: pointer;
    border: 2px solid var(--color-text-primary);
    background: transparent;
    color: var(--color-text-primary);
    transition: all 0.4s var(--ease-out-expo);
}

.btn-primary {
    background: var(--color-text-primary);
    color: var(--color-bg-base);
}
.btn-primary:hover {
    background: transparent;
    color: var(--color-text-primary);
}

.exec-btn:hover {
    background: var(--color-text-primary);
    color: var(--color-bg-base);
}

.btn-secondary {
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}
.btn-secondary:hover {
    border-color: var(--color-text-primary);
    color: var(--color-text-primary);
}

/* ===== Raw Badges & Tags ===== */
.badge {
    display: inline-flex;
    font-family: var(--mono);
    font-size: var(--fs-xs);
    font-weight: 700;
    padding: 4px 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: 1px solid currentColor;
}
.badge-red { color: var(--color-danger); background: var(--color-danger-bg); border-color: var(--color-danger-border); }
.badge-amber { color: var(--color-warning); background: var(--color-warning-bg); border-color: var(--color-warning-border); }
.badge-green { color: var(--color-success); background: var(--color-success-bg); border-color: var(--color-success-border); }
.badge-blue { color: var(--color-text-primary); background: var(--color-bg-surface); border-color: var(--color-border); }

/* Inverted pills for technical readouts */
.code-pill {
    font-family: var(--mono);
    color: var(--color-bg-base);
    background: var(--color-text-primary);
    padding: 2px 8px;
    font-size: var(--fs-xs);
    font-weight: 700;
}

/* ===== Utility Classes left over for backward compat, styled raw ===== */
.text-accent { color: var(--color-text-primary) !important; }
.text-green { color: var(--color-success); }
.text-amber { color: var(--color-warning); }
.text-red { color: var(--color-danger); }

/* Structural dividers */
.divider { 
    border-top: 2px solid var(--color-border-heavy); 
    margin: var(--sp-xl) 0; 
}

/* Dense Log Items replacing "Cards" */
.log-record {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sp-xs);
    padding: var(--sp-md) 0;
    border-bottom: 1px solid var(--color-border-faint);
    transition: background 0.3s var(--ease-out-expo), padding-left 0.3s var(--ease-out-expo);
}
.log-record:hover {
    background: var(--color-bg-elevated);
    padding-left: var(--sp-sm); /* Subtle indent focus */
}
.log-record:first-child { border-top: 1px solid var(--color-border-faint); }
@media(min-width: 768px){
    .log-record {
        grid-template-columns: auto 1fr auto;
        gap: var(--sp-lg);
        align-items: baseline;
    }
}
.log-record-title {
    font-family: var(--sans);
    font-weight: 600;
    font-size: var(--fs-base);
    color: var(--color-text-primary);
    line-height: 1.3;
}
.log-record-meta {
    font-family: var(--mono);
    font-size: var(--fs-xs);
    color: var(--color-text-secondary);
}

/* Section Headings */
.section-header {
    border-bottom: 2px solid var(--color-text-primary);
    padding-bottom: var(--sp-md);
    margin-bottom: var(--sp-xl);
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}
.section-header h2 {
    margin: 0;
}
.section-label {
    font-family: var(--mono);
    font-size: var(--fs-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--sp-xs);
}