/* ==========================================================
   TRENDEER FOUNDATION
   Shared visual tokens and low-level layout primitives.

   Responsive structural decisions remain in Razor components
   using the existing MediaQuery and MudBlazor breakpoint setup.
   ========================================================== */

:root {
    /* Colours */
    --tr-color-page: #f4f5f7;
    --tr-color-panel: #ffffff;
    --tr-color-panel-alt: #f7f8fa;
    --tr-color-panel-muted: #ededed;
    --tr-color-text: #111111;
    --tr-color-text-secondary: #555555;
    --tr-color-text-muted: #777777;
    --tr-color-text-faint: #909090;
    --tr-color-border: #d9dce1;
    --tr-color-divider: #eceef2;
    --tr-color-accent: #0068b7;
    --tr-color-accent-hover: #004f8c;
    --tr-color-accent-soft: #eef6fb;
    --tr-color-positive: #07883f;
    --tr-color-positive-soft: #e8f5ed;
    --tr-color-negative: #d51f2a;
    --tr-color-negative-soft: #fcebed;
    --tr-color-warning: #a66c00;
    --tr-color-warning-soft: #fff4d6;
    /* Typography */
    --tr-font-family: Inter, Roboto, "Segoe UI", Arial, sans-serif;
    --tr-font-size-xs: 0.6rem;
    --tr-font-size-sm: 0.68rem;
    --tr-font-size-body: 0.76rem;
    --tr-font-size-md: 0.86rem;
    --tr-font-size-lg: 1rem;
    --tr-font-size-xl: 1.3rem;
    --tr-font-weight-normal: 400;
    --tr-font-weight-medium: 600;
    --tr-font-weight-bold: 800;
    --tr-font-weight-heavy: 900;
    --tr-line-height-tight: 1.15;
    --tr-line-height-normal: 1.4;
    --tr-line-height-relaxed: 1.55;
    /* Spacing */
    --tr-space-1: 4px;
    --tr-space-2: 6px;
    --tr-space-3: 8px;
    --tr-space-4: 10px;
    --tr-space-5: 12px;
    --tr-space-6: 14px;
    --tr-space-7: 16px;
    --tr-space-8: 20px;
    --tr-space-9: 24px;
    --tr-space-10: 32px;
    /* Fluid composition spacing */
    --tr-page-padding-inline: clamp(10px, 1.4vw, 22px);
    --tr-page-padding-block: clamp(10px, 1.2vw, 20px);
    --tr-section-gap: clamp(10px, 1vw, 16px);
    --tr-grid-gap: clamp(10px, 1vw, 16px);
    /* Borders and elevation */
    --tr-border: 1px solid var(--tr-color-border);
    --tr-divider: 1px solid var(--tr-color-divider);
    --tr-section-rule: 3px solid var(--tr-color-text);
    --tr-radius-none: 0;
    --tr-radius-sm: 3px;
    --tr-radius-md: 6px;
    --tr-shadow-sm: 0 2px 7px rgba(0, 0, 0, 0.06);
    --tr-shadow-md: 0 6px 18px rgba(0, 0, 0, 0.09);
    /* Motion */
    --tr-transition-fast: 140ms ease;
    --tr-transition-normal: 220ms ease;
    /* Common widths */
    --tr-content-width: 1600px;
    --tr-reading-width: 760px;
}


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

html {
    box-sizing: border-box;
}

*,
*::before,
*::after {
    box-sizing: inherit;
}

body {
    margin: 0;
    background: var(--tr-color-page);
    color: var(--tr-color-text);
    font-family: var(--tr-font-family);
}

img,
svg,
video,
canvas {
    max-width: 100%;
}

button,
input,
select,
textarea {
    font: inherit;
}


/* ==========================================================
   PAGE COMPOSITION
   ========================================================== */

.tr-page {
    width: 100%;
    min-width: 0;
    padding: var(--tr-page-padding-block) var(--tr-page-padding-inline) 48px;
}

.tr-page-container {
    width: min(100%, var(--tr-content-width));
    min-width: 0;
    margin-inline: auto;
}

.tr-page-content {
    width: 100%;
    min-width: 0;
}

.tr-page-stack {
    display: flex;
    flex-direction: column;
    gap: var(--tr-section-gap);
    width: 100%;
    min-width: 0;
}


/* ==========================================================
   GRID PRIMITIVES
   These are fluid defaults only.
   Structural layout changes can remain controlled by Razor
   MediaQuery state and additional component classes.
   ========================================================== */

.tr-grid {
    display: grid;
    gap: var(--tr-grid-gap);
    width: 100%;
    min-width: 0;
}

.tr-grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}

.tr-grid-auto-wide {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 360px), 1fr));
}

.tr-grid > *,
.tr-page-stack > * {
    min-width: 0;
}


/* ==========================================================
   PANEL PRIMITIVES
   ========================================================== */

.tr-panel {
    width: 100%;
    min-width: 0;
    border: var(--tr-border);
    background: var(--tr-color-panel);
}

.tr-panel-sectioned {
    border-top: var(--tr-section-rule);
}

.tr-panel-muted {
    background: var(--tr-color-panel-alt);
}

.tr-panel-shadow {
    box-shadow: var(--tr-shadow-sm);
}

.tr-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--tr-space-6);
    min-width: 0;
    padding: var(--tr-space-5) var(--tr-space-6);
    border-bottom: var(--tr-border);
}

.tr-panel-body {
    min-width: 0;
    padding: var(--tr-space-6);
}

.tr-panel-footer {
    min-width: 0;
    padding: var(--tr-space-3) var(--tr-space-6);
    border-top: var(--tr-divider);
    color: var(--tr-color-text-faint);
    font-size: var(--tr-font-size-xs);
}


/* ==========================================================
   SECTION HEADERS
   ========================================================== */

.tr-section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--tr-space-6);
    width: 100%;
    min-width: 0;
    padding: var(--tr-space-3) 0;
    border-top: var(--tr-section-rule);
    border-bottom: var(--tr-border);
}

.tr-section-head-copy {
    min-width: 0;
}

.tr-section-eyebrow {
    display: block;
    color: var(--tr-color-accent);
    font-size: var(--tr-font-size-xs);
    font-weight: var(--tr-font-weight-heavy);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.tr-section-title {
    margin: var(--tr-space-1) 0 0;
    color: var(--tr-color-text);
    font-size: var(--tr-font-size-lg);
    font-weight: var(--tr-font-weight-heavy);
    line-height: var(--tr-line-height-tight);
    text-transform: uppercase;
}

.tr-section-subtitle {
    margin: var(--tr-space-2) 0 0;
    color: var(--tr-color-text-muted);
    font-size: var(--tr-font-size-sm);
    line-height: var(--tr-line-height-normal);
}


/* ==========================================================
   METRICS
   ========================================================== */

.tr-metric {
    min-width: 0;
}

.tr-metric-label,
.tr-metric-value,
.tr-metric-detail {
    display: block;
}

.tr-metric-label {
    color: var(--tr-color-text-muted);
    font-size: var(--tr-font-size-xs);
    font-weight: var(--tr-font-weight-bold);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.tr-metric-value {
    overflow: hidden;
    margin-top: var(--tr-space-2);
    color: var(--tr-color-text);
    font-size: var(--tr-font-size-lg);
    font-weight: var(--tr-font-weight-heavy);
    line-height: var(--tr-line-height-tight);
    text-overflow: ellipsis;
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

.tr-metric-detail {
    margin-top: var(--tr-space-2);
    color: var(--tr-color-text-muted);
    font-size: var(--tr-font-size-xs);
    line-height: var(--tr-line-height-normal);
}


/* ==========================================================
   BADGES AND STATUS
   ========================================================== */

.tr-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--tr-space-1);
    padding: var(--tr-space-1) var(--tr-space-3);
    border: 1px solid currentColor;
    color: var(--tr-color-text-secondary);
    font-size: var(--tr-font-size-xs);
    font-weight: var(--tr-font-weight-heavy);
    letter-spacing: 0.04em;
    line-height: 1;
    text-transform: uppercase;
    white-space: nowrap;
}

.tr-positive {
    color: var(--tr-color-positive) !important;
}

.tr-negative {
    color: var(--tr-color-negative) !important;
}

.tr-warning {
    color: var(--tr-color-warning) !important;
}

.tr-muted {
    color: var(--tr-color-text-muted) !important;
}


/* ==========================================================
   COMMON STATES
   ========================================================== */

.tr-loading,
.tr-empty,
.tr-error {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--tr-space-4);
    width: 100%;
    min-width: 0;
    min-height: 110px;
    padding: var(--tr-space-7);
    border: var(--tr-border);
    background: var(--tr-color-panel);
    color: var(--tr-color-text-muted);
    font-size: var(--tr-font-size-body);
    text-align: center;
}

.tr-error {
    color: var(--tr-color-negative);
}


/* ==========================================================
   ACCESSIBILITY
   ========================================================== */

.tr-focusable:focus-visible,
button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--tr-color-accent);
    outline-offset: 2px;
}

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