/* Brand fonts are self-hosted in app/static/css/fonts.css (loaded first in
   app.html / login.html) — no external font CDN. */

/* Spirit Sight - Workbench Theme
   ================================
   The decided enterprise design language (Carbon/Fiori school):
   flat, squared, ruled 1px borders, data-dense. Blue interactive,
   amber reserved for primary actions and the active rail marker.
   Reference: docs/research/theme-mockups/a-workbench.html */

:root {
    /* ========== BRAND PALETTE ========== */
    --color-brand-navy: #1B2A4A;
    --color-brand-navy-light: #243556;
    --color-brand-navy-dark: #131E36;
    --color-brand-amber: #C17817;
    --color-brand-amber-light: #D4922E;
    --color-brand-amber-dark: #A56510;
    --color-brand-copper: #B87333;
    --color-brand-oak: #8B6F47;

    /* ========== NEUTRALS ========== */
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #F4F4F4;
    --color-bg-tertiary: #F8F8F8;
    --color-bg-inset: #EBEBEB;
    /* Char motif: gauge empty-arc track, a charred-oak ash (warm, quiet). */
    --color-char-track: #E9E2D7;
    --color-bg-hover: #F2F4F8;
    --color-bg-active: #E8E8E8;
    --color-bg-selected: #EDF5FF;
    --color-bg-dark: #161616;

    /* ========== SIDEBAR ========== */
    --color-sidebar-bg: #161616;
    --color-sidebar-hover: rgba(255,255,255,0.07);
    --color-sidebar-active: #262626;
    --color-sidebar-text: #C6C6C6;
    --color-sidebar-text-muted: #8D8D8D;
    --color-sidebar-text-active: #FFFFFF;
    --color-sidebar-border: rgba(255,255,255,0.10);

    /* ========== TEXT HIERARCHY ========== */
    --color-text-primary: #161616;
    --color-text-secondary: #525252;
    --color-text-tertiary: #6F6F6F;
    --color-text-quaternary: #8D8D8D;
    --color-text-inverse: #FFFFFF;
    --color-text-muted: #C6C6C6;

    /* ========== STATUS COLORS ========== */
    --color-critical: #DA1E28;
    --color-critical-bg: #FFF1F1;
    --color-critical-border: #FFB3B8;

    --color-warning: #B4700F;
    --color-warning-bg: #FDF4E7;
    --color-warning-border: #EDC48C;

    --color-success: #198038;
    --color-success-bg: #DEFBE6;
    --color-success-border: #A7F0BA;

    --color-info: #0043CE;
    --color-info-bg: #EDF5FF;
    --color-info-border: #A6C8FF;

    /* ── Categorical chart palette (accent-led, Carbon-style; must stay
       pairwise distinct in BOTH themes: two series may never share a
       color) ── */
    --chart-1: #B4700F;
    --chart-2: #0043CE;
    --chart-3: #198038;
    --chart-4: #6929C4;
    --chart-5: #005D5D;
    --chart-6: #9F1853;
    --chart-7: #B87333;
    --chart-8: #78A9FF;

    /* ── Muted status (charts, progress bars) ── */
    --color-critical-muted: #E87171;
    --color-warning-muted: #E5A342;
    --color-success-muted: #4ABA8A;
    --color-info-muted: #6B9FE8;

    /* ========== INTERACTIVE ========== */
    --color-primary: #0F62FE;
    --color-primary-hover: #0353E9;
    --color-primary-active: #002D9C;
    --color-primary-light: #EDF5FF;

    --color-accent: #B4700F;
    --color-accent-hover: #C17817;
    --color-accent-active: #9A5E0F;
    --color-accent-light: #FDF4E7;

    /* Legacy aliases */
    /* ========== BORDERS ========== */
    --color-border-primary: #C6C6C6;
    --color-border-secondary: #E0E0E0;
    --color-border-hover: #A8A8A8;
    --color-border-focus: #0F62FE;
    --color-border-active: #0F62FE;

    /* ========== SHADOWS ========== */
    --shadow-xs: none;
    --shadow-sm: none;
    --shadow-md: 0 2px 6px rgba(22, 22, 22, 0.14);
    --shadow-lg: 0 4px 14px rgba(22, 22, 22, 0.16);
    --shadow-xl: 0 8px 24px rgba(22, 22, 22, 0.18);
    --shadow-2xl: 0 12px 36px rgba(22, 22, 22, 0.22);
    --shadow-focus: 0 0 0 2px rgba(15, 98, 254, 0.35);
    --shadow-focus-error: 0 0 0 2px rgba(218, 30, 40, 0.30);

    /* ========== TYPOGRAPHY ========== */
    --font-family-base: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-family-display: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-family-mono: 'IBM Plex Mono', 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    /* Tradition voice: hero numerals ONLY (.ss-metric__value,
       .ss-kpi-bar__value). Never body text or headings. */
    --font-family-serif: 'IBM Plex Serif', 'Georgia', 'Times New Roman', serif;

    --font-size-2xs: 10px;
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 13px;
    --font-size-lg: 14px;
    --font-size-xl: 16px;
    --font-size-2xl: 18px;
    --font-size-3xl: 20px;
    --font-size-4xl: 24px;
    --font-size-5xl: 30px;
    --font-size-display: 36px;

    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-none: 1;
    --line-height-tight: 1.2;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;

    --letter-spacing-tighter: -0.02em;
    --letter-spacing-tight: -0.01em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;
    --letter-spacing-widest: 0.1em;

    /* ========== SPACING — 4px Grid ========== */
    --spacing-px: 1px;
    --spacing-0: 0;
    --spacing-0-5: 2px;
    --spacing-1: 4px;
    --spacing-1-5: 6px;
    --spacing-2: 8px;
    --spacing-2-5: 10px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-5: 20px;
    --spacing-6: 24px;
    --spacing-8: 32px;
    --spacing-10: 40px;
    --spacing-12: 48px;
    --spacing-16: 64px;
    --spacing-20: 80px;

    --spacing-2xs: 4px;
    --spacing-3-5: 14px;
    --spacing-xs: var(--spacing-1);
    --spacing-sm: var(--spacing-2);
    --spacing-md: var(--spacing-4);
    --spacing-lg: var(--spacing-6);
    --spacing-xl: var(--spacing-8);
    /* ========== BORDER RADIUS ========== */
    --radius-none: 0;
    --radius-sm: 0;
    --radius-md: 2px;
    --radius-lg: 2px;
    --radius-xl: 2px;
    --radius-2xl: 2px;
    --radius-full: 9999px;

    /* ========== TRANSITIONS ========== */
    --transition-fast: 100ms ease-out;
    --transition-base: 150ms ease-out;
    --transition-normal: 200ms ease-out;
    --transition-slow: 250ms ease-out;
    --transition-panel: 250ms cubic-bezier(0.4, 0, 0.2, 1);

    /* ========== Z-INDEX ========== */
    --z-base: 0;
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-notification: 1080;

    /* ========== LAYOUT ========== */
    --header-height: 52px;
    --sidebar-width: 240px;
    --sidebar-collapsed-width: 64px;
    --content-max-width: 1440px;
    /* ========== LEGACY ALIASES ========== */
    --color-primary-rgb: 15, 98, 254;
    --color-accent-rgb: 180, 112, 15;
    --color-success-dark: #0E6027;
    --color-success-hover: #24A148;
    --color-error-dark: #A2191F;
    --color-error-hover: #DA1E28;
    --color-warning-dark: #8E5A0B;
    --color-warning-hover: #C17817;
    --color-info-dark: #002D9C;
    --color-info-hover: #0043CE;
    --color-primary-alpha: rgba(15, 98, 254, 0.15);
    /* ========== MODULE SHORTHAND ALIASES ========== */
    --border-color: var(--color-border-primary);
    --primary: var(--color-primary);
}

/* ========== BASE STYLES ========== */

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    margin: 0;
    padding: 0;
}

/* ========== FOCUS STYLES ========== */
*:focus {
    outline: none;
}

*:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
    border-radius: var(--radius-sm);
}

/* ========== SELECTION ========== */
::selection {
    background-color: rgba(15, 98, 254, 0.14);
    color: var(--color-text-primary);
}
::-moz-selection {
    background-color: rgba(15, 98, 254, 0.14);
    color: var(--color-text-primary);
}

/* ========== REDUCED MOTION (global, app-wide) ========== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ========== HEADINGS ========== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-display);
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
    margin: 0;
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-tight);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); font-weight: var(--font-weight-medium); }
h6 { font-size: var(--font-size-base); font-weight: var(--font-weight-medium); text-transform: uppercase; letter-spacing: var(--letter-spacing-wider); }

/* ========== LINKS ========== */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-hover);
}

/* ========== MONOSPACE DATA ========== */
.mono, [data-type="number"], .numeric {
    font-family: var(--font-family-mono);
    font-feature-settings: 'tnum' 1;
}

/* ========== CODE ========== */
code, pre {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
}

code {
    background: var(--color-bg-tertiary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    /* Themed token, not brand navy: navy-on-dark was unreadable in dark theme
       (traceability lot numbers, developer key prefixes). */
    color: var(--color-text-primary);
}

pre {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    overflow-x: auto;
    border: 1px solid var(--color-border-secondary);
}

pre code {
    background: none;
    padding: 0;
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-border-hover);
}