/* ==========================================================================
   KuKA theme layer - "glow-up" (navy + bronze, from the logo).
   Loaded AFTER tokens.css/app.css by the Razor layouts only. The public
   /welcome page never loads this file, so overriding tokens here is safe.
   Do not edit tokens.css / app.css for theming - change this file instead.
   Breakpoints: 768px and 1280px (mobile-first).
   ========================================================================== */

:root {
    /* ---- Brand palette ---- */
    --kuka-navy-950: #0b1220;
    --kuka-navy-900: #0f1729;
    --kuka-navy-800: #152238;
    --kuka-navy-700: #1f3d7a;
    --kuka-navy-600: #2c3d5c;
    --kuka-navy-500: #3d5270;
    --kuka-bronze-700: #8a6420; /* accessible bronze text on white */
    --kuka-bronze-500: #b78a2e;
    --kuka-bronze-300: #d1b06b;
    --kuka-gradient-brand: linear-gradient(var(--kuka-navy-900), var(--kuka-navy-900)); /* flat navy; gradient-typed so background-image users keep working */
    --kuka-grid-pattern: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
    --kuka-grid-size: 22px 22px;
    --kuka-font-display: "Fraunces", Georgia, serif;

    /* ---- Token overrides (light) ---- */
    --tt-color-primary: #1f3d7a;
    --tt-color-primary-hover: #1a3366;
    --tt-color-primary-active: #142a54;
    --tt-color-primary-subtle: #e8eef9;
    --tt-color-accent: #b78a2e;
    --tt-color-focus-ring: rgba(59, 111, 212, 0.4);

    --tt-radius-md: 0.75rem;
    --tt-radius-lg: 1rem;

    --tt-shadow-sm: 0 1px 2px rgba(11, 18, 32, 0.05), 0 1px 3px rgba(11, 18, 32, 0.04);
    --tt-shadow-md: 0 2px 4px rgba(11, 18, 32, 0.04), 0 6px 16px rgba(11, 18, 32, 0.07);
    --tt-shadow-lg: 0 4px 8px rgba(11, 18, 32, 0.05), 0 16px 36px rgba(11, 18, 32, 0.12);

    /* ---- Bootstrap bridge (light) ---- */
    --bs-primary: #1f3d7a;
    --bs-primary-rgb: 31, 61, 122;
    --bs-link-color: #3b6fd4;
    --bs-link-color-rgb: 59, 111, 212;
    --bs-link-hover-color: #2f58ab;
    --bs-link-hover-color-rgb: 47, 88, 171;
}

/* ---- Dark theme ---- */
html[data-bs-theme="dark"] {
    --tt-color-primary: #7ba3f5;
    --tt-color-primary-hover: #9dbcf8;
    --tt-color-accent: #d9b45f;
    --tt-color-focus-ring: rgba(123, 163, 245, 0.65);

    --bs-primary: #7ba3f5;
    --bs-primary-rgb: 123, 163, 245;
    --bs-link-color: #7ba3f5;
    --bs-link-color-rgb: 123, 163, 245;
    --bs-link-hover-color: #9dbcf8;
    --bs-link-hover-color-rgb: 157, 188, 248;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.tt-btn {
    transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease,
        box-shadow 0.18s ease, transform 0.18s ease;
}

.tt-btn--primary {
    box-shadow: var(--tt-shadow-sm);
}

.tt-btn--primary:hover {
    /* bronze underglow */
    box-shadow: 0 1px 0 var(--kuka-bronze-500), 0 6px 14px -4px rgba(183, 138, 46, 0.45);
}

.tt-btn--primary:active {
    box-shadow: none;
    transform: translateY(1px);
}

.tt-btn--outline {
    border-color: var(--tt-color-border-strong);
}

.tt-btn--outline:hover {
    background-color: var(--tt-color-primary-subtle);
    border-color: var(--tt-color-primary);
}

/* ==========================================================================
   Form controls
   ========================================================================== */
.form-control,
.form-select,
.tt-field .form-control,
.tt-field .form-select {
    min-height: var(--tt-touch-target-min);
    border-color: var(--tt-color-border-strong);
    border-radius: var(--tt-radius-md);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--tt-color-primary);
    box-shadow: 0 0 0 0.2rem var(--tt-color-focus-ring);
}

.tt-field__label {
    font-weight: var(--tt-font-weight-semibold);
}

/* ==========================================================================
   Cards
   ========================================================================== */
.tt-card {
    border: 1px solid var(--tt-color-border);
    border-radius: var(--tt-radius-lg);
    box-shadow: var(--tt-shadow-sm);
    transition: box-shadow 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

/* Hover lift only where the card is already interactive */
a.tt-card:hover,
button.tt-card:hover,
.tt-card[role="button"]:hover,
.tt-card[tabindex]:hover {
    border-color: var(--tt-color-border-strong);
    box-shadow: var(--tt-shadow-md);
    transform: translateY(-2px);
}

/* ==========================================================================
   Tables
   ========================================================================== */
.tt-table {
    font-variant-numeric: tabular-nums;
}

@media (min-width: 768px) {
    .tt-table thead th {
        position: sticky; /* sticks inside a scroll container; harmless otherwise */
        top: 0;
        z-index: 1;
        border-block-end: 1px solid var(--tt-color-border-strong);
    }

    .tt-table tbody tr {
        transition: background-color 0.12s ease;
    }

    .tt-table tbody tr:hover {
        background-color: var(--tt-color-primary-subtle);
    }
}

/* ==========================================================================
   Pills
   ========================================================================== */
.tt-pill {
    letter-spacing: 0.01em;
    border: 1px solid transparent;
}

/* ==========================================================================
   Reusable: stat tile + brand panel
   ========================================================================== */
.kuka-stat {
    display: flex;
    flex-direction: column;
    gap: var(--tt-space-1);
    padding: var(--tt-space-4);
    background-color: var(--tt-color-surface);
    border: 1px solid var(--tt-color-border);
    border-radius: var(--tt-radius-lg);
    box-shadow: var(--tt-shadow-sm);
}

.kuka-stat__label {
    font-size: var(--tt-font-size-xs);
    font-weight: var(--tt-font-weight-semibold);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--tt-color-text-muted);
}

.kuka-stat__value {
    font-size: var(--tt-font-size-2xl);
    font-weight: var(--tt-font-weight-bold);
    line-height: var(--tt-line-height-tight);
    font-variant-numeric: tabular-nums;
    color: var(--tt-color-text);
}

@media (min-width: 768px) {
    .kuka-stat {
        padding: var(--tt-space-5);
    }

    .kuka-stat__value {
        font-size: var(--tt-font-size-3xl);
    }
}

.kuka-brand-panel {
    position: relative;
    padding: var(--tt-space-5);
    color: #f1f4fa;
    background-color: var(--kuka-navy-900);
    background-image: var(--kuka-grid-pattern), var(--kuka-gradient-brand);
    background-size: var(--kuka-grid-size), cover;
    border-radius: var(--tt-radius-lg);
    box-shadow: var(--tt-shadow-md);
}

.kuka-brand-panel :where(h1, h2, h3, h4) {
    color: #fff;
}

@media (min-width: 1280px) {
    .kuka-brand-panel {
        padding: var(--tt-space-6);
    }
}

/* ==========================================================================
   Carbon layer - IBM Carbon UX rules on KuKA tokens. Rulebook:
   docs/visual-identity/CARBON.md. Brand colours and fonts stay.
   ========================================================================== */
:root {
    --tt-color-text-subtle: #687284; /* Carbon text-secondary: 4.8:1 on white (was 3.2:1) */
    --kuka-focus: #1f3d7a;
}

html[data-bs-theme="dark"] {
    --tt-color-text-subtle: #959fae; /* 6.1:1 on the dark surface */
    --kuka-focus: #ffffff;
}

/* Visible 2px focus indicator (Carbon focus) */
.tt-btn:focus-visible,
.tt-icon-btn:focus-visible,
.kuka-table__link:focus-visible {
    outline: 2px solid var(--kuka-focus);
    outline-offset: 2px;
    box-shadow: none;
}

/* Data table: primary row action is the linked name */
.kuka-table__link {
    color: var(--tt-color-text);
    font-weight: var(--tt-font-weight-semibold);
    text-decoration: none;
}

.kuka-table__link:hover {
    color: var(--tt-color-primary);
    text-decoration: underline;
}

/* Row-name action that opens a modal instead of navigating (e.g. restaurant tables) */
button.kuka-table__link {
    padding: 0;
    border: 0;
    background: none;
    font-family: inherit;
    font-size: inherit;
    text-align: start;
    cursor: pointer;
}

@media (min-width: 768px) {
    /* Carbon data table: sentence-case 14px semibold headers, 48px rows */
    .tt-table thead th {
        font-size: var(--tt-font-size-sm);
        text-transform: none;
        letter-spacing: 0;
        color: var(--tt-color-text);
    }

    .tt-table tbody td {
        height: 48px;
    }
}

/* Inline notification: 3px leading border in the status colour */
.alert {
    border: 0;
    border-inline-start: 3px solid currentColor;
    border-radius: var(--tt-radius-sm);
    font-size: var(--tt-font-size-sm);
}

/* Empty state: Carbon heading-02 title */
.tt-empty__title {
    font-size: var(--tt-font-size-base);
}

@media (prefers-reduced-motion: reduce) {
    .tt-btn,
    .tt-card,
    .tt-table tbody tr,
    .form-control,
    .form-select {
        transition: none;
    }

    a.tt-card:hover,
    button.tt-card:hover,
    .tt-card[role="button"]:hover,
    .tt-card[tabindex]:hover,
    .tt-btn--primary:active {
        transform: none;
    }
}