/* ==========================================================================
   Design tokens — dark only, deliberately. Traffic-engineering console theme:
   asphalt neutrals, a single safety-orange accent, DIN/road-signage type for
   headings and labels, monospace for anything that's a number or code.
   ========================================================================== */

:root {
    --tc-bg: #14171b;
    --tc-bg-grid: rgba(236, 230, 216, 0.035);
    --tc-surface: #1b2025;
    --tc-surface-alt: #232a31;
    --tc-border: #2e363e;
    --tc-border-strong: #3b4550;

    --tc-text: #ece6d8;
    --tc-text-muted: #92999f;
    --tc-text-faint: #5c646b;

    --tc-accent: #e2691f;
    --tc-accent-dark: #c85614;
    --tc-accent-ink: #241004;

    --tc-success: #4c9a6a;
    --tc-danger: #c1453d;
    --tc-warning: #d8a93b;

    --tc-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
    --tc-shadow-lift: 0 4px 10px rgba(0, 0, 0, 0.4), 0 20px 40px rgba(0, 0, 0, 0.45);
    --tc-radius: 4px;
    --tc-radius-sm: 3px;

    --tc-font-display: "Bahnschrift", "DIN Alternate", "DIN Condensed", "Oswald", "Arial Narrow", sans-serif;
    --tc-font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --tc-font-mono: "Cascadia Code", "SF Mono", Consolas, "Roboto Mono", monospace;

    color-scheme: dark;
}

/* ==========================================================================
   Base
   ========================================================================== */

html, body {
    background-color: var(--tc-bg);
}

body {
    color: var(--tc-text);
    font-family: var(--tc-font-body);
    background-image:
        linear-gradient(var(--tc-bg-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--tc-bg-grid) 1px, transparent 1px);
    background-size: 100% 32px, 32px 100%;
    background-position: 0 0, 0 0;
    background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--tc-font-display);
    font-weight: 700;
    letter-spacing: 0.005em;
    color: var(--tc-text);
    text-wrap: balance;
}

a {
    color: var(--tc-accent);
}

a:hover {
    color: #f0813a;
}

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

/* Station numbers, coordinates, counts, timestamps — instrument-readout figures. */
.tc-mono {
    font-family: var(--tc-font-mono);
    font-variant-numeric: tabular-nums;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--tc-accent);
    color: var(--tc-accent-ink);
    padding: 0.5rem 1rem;
    z-index: 2000;
    border-radius: 0 0 var(--tc-radius-sm) 0;
    font-weight: 700;
}

.skip-link:focus {
    left: 0;
}

:focus-visible {
    outline: 2px solid var(--tc-accent);
    outline-offset: 2px;
}

/* ==========================================================================
   Navbar / footer — a title-block header, not a generic app bar
   ========================================================================== */

.tc-navbar {
    background: #0e1013;
    border-bottom: 2px solid var(--tc-border-strong);
    padding-top: 0.9rem;
    padding-bottom: 0.9rem;
}

.navbar-brand {
    font-family: var(--tc-font-display);
    font-weight: 700;
    letter-spacing: 0.01em;
    display: flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--tc-text) !important;
}

.tc-brand-mark {
    display: block;
    height: 1.9rem;
    width: auto;
}

.tc-navbar .nav-link {
    font-family: var(--tc-font-display);
    font-size: 0.82rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--tc-text-muted) !important;
    padding-bottom: 3px;
    border-bottom: 2px solid transparent;
}

.tc-navbar .nav-link:hover {
    color: var(--tc-text) !important;
}

.tc-footer {
    border-top: 1px solid var(--tc-border);
    background: var(--tc-surface);
    font-family: var(--tc-font-mono);
    letter-spacing: 0.02em;
}

/* ==========================================================================
   Cards, forms, buttons
   ========================================================================== */

.card {
    border: 1px solid var(--tc-border);
    border-radius: var(--tc-radius);
    background-color: var(--tc-surface);
    box-shadow: var(--tc-shadow);
}

.card-title {
    font-family: var(--tc-font-display);
    font-size: 0.95rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    font-weight: 700;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--tc-border);
}

label {
    font-family: var(--tc-font-display);
    font-weight: 600;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--tc-text-faint);
}

.form-control,
.form-control-file {
    background-color: var(--tc-surface-alt);
    color: var(--tc-text);
    border: 1px solid var(--tc-border);
    border-radius: var(--tc-radius-sm);
    padding: 0.55rem 0.75rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus {
    background-color: var(--tc-surface-alt);
    color: var(--tc-text);
    border-color: var(--tc-accent);
    box-shadow: 0 0 0 3px rgba(226, 105, 31, 0.18);
}

.form-control[readonly] {
    background-color: var(--tc-surface);
    color: var(--tc-text-muted);
}

/* Coordinates, km distances, and other instrument-readout inputs. */
.tc-field-mono {
    font-family: var(--tc-font-mono) !important;
    font-variant-numeric: tabular-nums;
}

.btn {
    border-radius: var(--tc-radius-sm);
    font-family: var(--tc-font-display);
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-weight: 700;
    padding: 0.6rem 1.15rem;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.15s ease;
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background-color: var(--tc-accent);
    border-color: var(--tc-accent);
    color: var(--tc-accent-ink);
}

.btn-primary:hover:not(:disabled) {
    background-color: #f0813a;
    border-color: #f0813a;
    box-shadow: var(--tc-shadow-lift);
}

.btn-primary:disabled {
    opacity: 0.45;
}

.btn-outline-secondary {
    color: var(--tc-text-muted);
    border-color: var(--tc-border-strong);
}

.btn-outline-secondary:hover {
    background-color: var(--tc-surface-alt);
    color: var(--tc-text);
    border-color: var(--tc-border-strong);
}

.btn.is-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn.is-loading::after {
    content: "";
    position: absolute;
    width: 1rem;
    height: 1rem;
    top: 50%;
    left: 50%;
    margin: -0.5rem 0 0 -0.5rem;
    border: 2px solid rgba(36, 16, 4, 0.35);
    border-top-color: var(--tc-accent-ink);
    border-radius: 50%;
    animation: tc-spin 0.6s linear infinite;
}

.btn-outline-secondary.is-loading::after {
    border-color: rgba(255, 255, 255, 0.15);
    border-top-color: var(--tc-text-muted);
}

@keyframes tc-spin {
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   Wizard stepper — mileposts along a route, not generic numbered circles
   ========================================================================== */

.tc-stepper-wrap {
    position: relative;
}

.tc-stepper-wrap::before {
    content: "";
    position: absolute;
    left: 0.5rem;
    right: 0.5rem;
    top: 2.9rem;
    height: 3px;
    background: repeating-linear-gradient(90deg, var(--tc-border-strong) 0 14px, transparent 14px 24px);
}

.tc-stepper-progress {
    position: absolute;
    left: 0.5rem;
    top: 2.9rem;
    height: 3px;
    background: var(--tc-accent);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.tc-stepper {
    position: relative;
    display: flex;
    justify-content: space-between;
    list-style: none;
    padding: 1.9rem 0.5rem 0;
    margin: 0 0 2.75rem;
}

.tc-step {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
}

.tc-step-circle {
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--tc-surface);
    border: 2px solid var(--tc-border-strong);
    color: var(--tc-text-faint);
    font-family: var(--tc-font-mono);
    font-weight: 700;
    font-size: 0.85rem;
    position: relative;
    z-index: 1;
}

.tc-step.is-active .tc-step-circle {
    border-color: var(--tc-accent);
    color: var(--tc-accent);
    box-shadow: 0 0 0 5px rgba(226, 105, 31, 0.16);
}

.tc-step.is-done .tc-step-circle {
    background: var(--tc-success);
    border-color: var(--tc-success);
    color: #0e1a13;
}

.tc-step-label {
    margin-top: 0.65rem;
    font-family: var(--tc-font-display);
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--tc-text-faint);
}

.tc-step.is-active .tc-step-label {
    color: var(--tc-accent);
}

.tc-step.is-done .tc-step-label {
    color: var(--tc-text-muted);
}

@media (max-width: 576px) {
    .tc-step-label { font-size: 0.62rem; }
    .tc-step-circle { width: 1.9rem; height: 1.9rem; font-size: 0.78rem; }
}

/* ==========================================================================
   Save-in-progress bar — shown while the multi-stage save sequence runs
   ========================================================================== */

.tc-save-progress {
    display: none;
    margin-top: 1rem;
}

.tc-save-progress.is-active {
    display: block;
}

.tc-save-progress-label {
    font-family: var(--tc-font-display);
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--tc-text-faint);
    margin-bottom: 0.5rem;
}

.tc-save-progress-track {
    position: relative;
    height: 6px;
    border-radius: 3px;
    background: repeating-linear-gradient(90deg, var(--tc-border-strong) 0 10px, transparent 10px 18px);
    overflow: hidden;
}

.tc-save-progress-fill {
    position: absolute;
    top: 0;
    bottom: 0;
    left: -35%;
    width: 35%;
    background: var(--tc-accent);
    border-radius: 3px;
    animation: tc-save-progress-sweep 1.2s ease-in-out infinite;
}

@keyframes tc-save-progress-sweep {
    0% { left: -35%; }
    100% { left: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    .tc-save-progress-fill { animation: none; left: 0; width: 100%; opacity: 0.6; }
}

/* ==========================================================================
   Home hero / workflow list
   ========================================================================== */

.tc-hero-eyebrow {
    font-family: var(--tc-font-display);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--tc-accent);
}

.tc-workflow-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tc-workflow-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 0.7rem 0;
    border-top: 1px dashed var(--tc-border);
}

.tc-workflow-list li:first-child {
    border-top: none;
}

.tc-workflow-list .tc-workflow-num {
    flex: 0 0 auto;
    min-width: 1.6rem;
    height: 1.6rem;
    padding: 0 0.3rem;
    border-radius: var(--tc-radius-sm);
    background: var(--tc-surface-alt);
    border: 1px solid var(--tc-border-strong);
    color: var(--tc-accent);
    font-family: var(--tc-font-mono);
    font-weight: 700;
    font-size: 0.78rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ==========================================================================
   Data plate — label-over-value instrument readouts (used sparingly, for
   read-only reference values rather than editable fields)
   ========================================================================== */

.tc-plate .cap {
    display: block;
    font-family: var(--tc-font-display);
    font-size: 0.66rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--tc-text-faint);
    margin-bottom: 0.2rem;
}

.tc-plate .val {
    font-family: var(--tc-font-mono);
    font-size: 1rem;
    color: var(--tc-text);
}

/* ==========================================================================
   Manifest table (Review step) and stat tiles (Complete step)
   ========================================================================== */

.tc-manifest {
    width: 100%;
    border-collapse: collapse;
}

.tc-manifest tr {
    border-top: 1px solid var(--tc-border);
}

.tc-manifest tr:first-child {
    border-top: none;
}

.tc-manifest td {
    padding: 0.65rem 0.25rem;
    font-size: 0.92rem;
    vertical-align: top;
}

.tc-manifest td.tc-k {
    color: var(--tc-text-faint);
    font-family: var(--tc-font-display);
    font-size: 0.68rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    width: 38%;
    white-space: nowrap;
}

.tc-manifest td.tc-v {
    font-family: var(--tc-font-mono);
    color: var(--tc-text);
}

.tc-note {
    display: block;
    font-family: var(--tc-font-body);
    color: var(--tc-text-faint);
    font-size: 0.82rem;
    margin-top: 0.15rem;
}

.tc-stat-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    gap: 0.85rem;
    margin-top: 1.1rem;
}

.tc-stat {
    border: 1px solid var(--tc-border);
    border-radius: var(--tc-radius);
    padding: 0.85rem 1rem;
    background: var(--tc-surface-alt);
}

.tc-stat .cap {
    font-family: var(--tc-font-display);
    font-size: 0.64rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--tc-text-faint);
}

.tc-stat .num {
    font-family: var(--tc-font-mono);
    font-size: 1.4rem;
    color: var(--tc-text);
    margin-top: 0.15rem;
}

.tc-stat .num.tc-accent {
    color: var(--tc-accent);
}

/* Save-sequence checklist + status chips, replacing plain Bootstrap badges */
.tc-checklist {
    list-style: none;
    margin: 0;
    padding: 0;
}

.tc-checklist li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-top: 1px solid var(--tc-border);
    font-size: 0.92rem;
}

.tc-checklist li:first-child {
    border-top: none;
}

.tc-chip {
    font-family: var(--tc-font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 0.2rem 0.6rem;
    border-radius: var(--tc-radius-sm);
    font-weight: 700;
    border: 1px solid transparent;
}

.tc-chip-good {
    background: rgba(76, 154, 106, 0.16);
    color: var(--tc-success);
    border-color: rgba(76, 154, 106, 0.4);
}

.tc-chip-crit {
    background: rgba(193, 69, 61, 0.16);
    color: var(--tc-danger);
    border-color: rgba(193, 69, 61, 0.4);
}

.tc-chip-warn {
    background: rgba(216, 169, 59, 0.16);
    color: var(--tc-warning);
    border-color: rgba(216, 169, 59, 0.4);
}

/* Key/value list (Analytics), lighter-weight than a bootstrap table */
.tc-kv-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.tc-kv-list li {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.5rem 0;
    border-top: 1px solid var(--tc-border);
    font-size: 0.88rem;
}

.tc-kv-list li:first-child {
    border-top: none;
}

.tc-kv-list .tc-label {
    color: var(--tc-text-muted);
    overflow-wrap: anywhere;
}

.tc-kv-list .tc-value {
    font-family: var(--tc-font-mono);
    color: var(--tc-text);
    flex-shrink: 0;
}

/* ==========================================================================
   Misc / responsive
   ========================================================================== */

.tc-fade-in {
    animation: tc-fade-in 0.25s ease both;
}

@keyframes tc-fade-in {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
    .tc-fade-in { animation: none; }
    .btn.is-loading::after { animation: none; }
}

.alert-success {
    background-color: rgba(76, 154, 106, 0.12);
    border-color: rgba(76, 154, 106, 0.35);
    color: var(--tc-success);
}

.alert-danger {
    background-color: rgba(193, 69, 61, 0.12);
    border-color: rgba(193, 69, 61, 0.35);
    color: var(--tc-danger);
}

.alert-warning {
    background-color: rgba(216, 169, 59, 0.12);
    border-color: rgba(216, 169, 59, 0.35);
    color: var(--tc-warning);
}

.list-group-item {
    background-color: var(--tc-surface);
    border-color: var(--tc-border);
    color: var(--tc-text);
}

/* Bootstrap's compiled .table sets an explicit near-black color rather than
   inheriting from body, so it never picks up --tc-text on its own. */
.table {
    color: var(--tc-text);
}

.table th,
.table td {
    border-color: var(--tc-border);
}

pre.bg-light {
    background-color: var(--tc-surface-alt) !important;
    color: var(--tc-text);
    border-color: var(--tc-border) !important;
}

/* ==========================================================================
   Map / plan-sheet viewport
   ========================================================================== */

.tc-viewport {
    position: relative;
    border-radius: var(--tc-radius);
    border: 1px solid var(--tc-border-strong);
    overflow: hidden;
    box-shadow: var(--tc-shadow);
}

.tc-viewport .tc-crop {
    position: absolute;
    width: 16px;
    height: 16px;
    border: 1.5px solid var(--tc-text-faint);
    opacity: 0.8;
    z-index: 500;
    pointer-events: none;
}

.tc-crop.tc-tl { top: 8px; left: 8px; border-right: none; border-bottom: none; }
.tc-crop.tc-tr { top: 8px; right: 8px; border-left: none; border-bottom: none; }
.tc-crop.tc-bl { bottom: 8px; left: 8px; border-right: none; border-top: none; }
.tc-crop.tc-br { bottom: 8px; right: 8px; border-left: none; border-top: none; }

.tc-viewport .tc-coord {
    position: absolute;
    font-family: var(--tc-font-mono);
    font-size: 0.68rem;
    color: var(--tc-text-muted);
    background: rgba(14, 16, 19, 0.72);
    padding: 0.15rem 0.45rem;
    border-radius: 2px;
    z-index: 500;
    pointer-events: none;
}

.tc-coord.tc-nw { top: 10px; left: 28px; }
.tc-coord.tc-se { bottom: 10px; right: 28px; }

.tc-map-search {
    display: flex;
    gap: 0.35rem;
    background: var(--tc-surface);
    border: 1px solid var(--tc-border-strong);
    border-radius: var(--tc-radius-sm);
    box-shadow: var(--tc-shadow);
    padding: 0.4rem;
}

.tc-map-search-input {
    width: 160px;
    border: 1px solid var(--tc-border);
    border-radius: 2px;
    padding: 0.3rem 0.5rem;
    font-family: var(--tc-font-mono);
    font-size: 0.85rem;
    background: var(--tc-surface-alt);
    color: var(--tc-text);
}

.tc-map-search-input:focus {
    outline: none;
    border-color: var(--tc-accent);
    box-shadow: 0 0 0 3px rgba(226, 105, 31, 0.18);
}

.tc-map-search-btn {
    border: none;
    border-radius: 2px;
    padding: 0.3rem 0.7rem;
    font-family: var(--tc-font-display);
    font-size: 0.78rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    font-weight: 700;
    background: var(--tc-accent);
    color: var(--tc-accent-ink);
    cursor: pointer;
    transition: background-color 0.15s ease;
    position: relative;
}

.tc-map-search-btn:hover {
    background: #f0813a;
}

.tc-map-search-btn.is-loading {
    color: transparent;
}

.tc-map-search-btn.is-loading::after {
    content: "";
    position: absolute;
    width: 0.8rem;
    height: 0.8rem;
    top: 50%;
    left: 50%;
    margin: -0.4rem 0 0 -0.4rem;
    border: 2px solid rgba(36, 16, 4, 0.35);
    border-top-color: var(--tc-accent-ink);
    border-radius: 50%;
    animation: tc-spin 0.6s linear infinite;
}

/* Leaflet controls need to stay legible against the dark ground */
.leaflet-bar a,
.leaflet-control-attribution {
    background-color: var(--tc-surface);
    color: var(--tc-text);
}

.leaflet-container {
    background: #171c21;
}