/*
 * CADENCE — Service Contract Consumption Bridge (WP02)
 *
 * Visual surface for the SC Consumption Bridge overlay section.
 * Reuses CSS custom properties defined in index.html (same set as
 * entity_drawer.css — no new top-level tokens per NFR-006).
 *
 * Local variables (--scb-*) are scoped to .scb-surface to avoid
 * bleeding into other sections.
 *
 * Mission: service-contract-consumption-bridge-01KRGMJB
 */

/* =========================================================================
   Root-level bridge tokens (scoped)
   ========================================================================= */

.scb-surface {
    /* State colours — WCAG 2.1 AA contrast on white */
    --scb-color-up-for-renewal:        #d97706;   /* amber-600 */
    --scb-color-up-for-renewal-bg:     #fffbeb;
    --scb-color-up-for-renewal-border: #fcd34d;

    --scb-color-overspent:        #dc2626;  /* red-600 */
    --scb-color-overspent-bg:     #fef2f2;
    --scb-color-overspent-border: #fca5a5;

    --scb-color-done:        #059669;       /* emerald-600 */
    --scb-color-done-bg:     #ecfdf5;
    --scb-color-done-border: #6ee7b7;

    --scb-color-not-started:        #94a3b8;  /* slate-400 */
    --scb-color-not-started-bg:     #f8fafc;
    --scb-color-not-started-border: #e2e8f0;

    /* Composition bar segment colours */
    --scb-seg-core:     #6366f1;   /* indigo-500 — core */
    --scb-seg-oncall:   #0891b2;   /* cyan-600 — on-call */
    --scb-seg-extended: #ea580c;   /* orange-600 — extended */
}

/* =========================================================================
   Surface & layout
   ========================================================================= */

.scb-surface {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--color-bg);
    overflow: hidden;
}

.scb-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 28px 16px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.scb-header__title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.scb-header__title-icon {
    font-size: 20px;
    line-height: 1;
}

.scb-header__right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

/* =========================================================================
   Lens toggle (pill-style, consistent with Cadence view-toggle)
   ========================================================================= */

.scb-lens-toggle {
    display: flex;
    align-items: center;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 3px;
    gap: 2px;
}

.scb-lens-btn {
    background: transparent;
    border: none;
    border-radius: calc(var(--radius-md) - 2px);
    padding: 5px 14px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-soft);
    cursor: pointer;
    transition: background 120ms, color 120ms;
    white-space: nowrap;
}

.scb-lens-btn:hover {
    background: var(--color-surface);
    color: var(--color-text);
}

.scb-lens-btn.is-active {
    background: var(--color-surface);
    color: var(--color-primary);
    box-shadow: var(--shadow-xs);
}

/* =========================================================================
   Cards area
   ========================================================================= */

.scb-cards-area {
    flex: 1;
    overflow-y: auto;
    padding: 24px 28px;
}

.scb-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
    align-items: start;
}

.scb-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 64px 24px;
    text-align: center;
    color: var(--color-text-muted);
}

.scb-empty-state__icon {
    font-size: 40px;
    line-height: 1;
    margin-bottom: 16px;
    opacity: 0.5;
}

.scb-empty-state__title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-soft);
    margin-bottom: 8px;
}

.scb-empty-state__hint {
    font-size: 13px;
    line-height: 1.5;
    max-width: 320px;
}

/* =========================================================================
   SC Card — full (default) variant
   ========================================================================= */

.scb-card {
    /* reset button styles */
    appearance: none;
    -webkit-appearance: none;
    font: inherit;
    text-align: left;

    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 16px;
    cursor: pointer;
    transition: box-shadow 150ms ease, transform 150ms ease, border-color 150ms ease;
    box-shadow: var(--shadow-xs);
}

.scb-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.scb-card:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* State variants */
.scb-card--up-for-renewal {
    border-color: var(--scb-color-up-for-renewal-border);
    background: var(--scb-color-up-for-renewal-bg);
}

.scb-card--overspent {
    border-color: var(--scb-color-overspent-border);
    background: var(--scb-color-overspent-bg);
}

.scb-card--done {
    border-color: var(--scb-color-done-border);
    background: var(--scb-color-done-bg);
}

.scb-card--not-started {
    border-color: var(--scb-color-not-started-border);
    opacity: 0.8;
}

/* =========================================================================
   Card: compact variant
   ========================================================================= */

.scb-card--compact {
    padding: 10px 14px;
    gap: 7px;
    min-height: 96px;
}

.scb-card--compact .scb-card__ca-os,
.scb-card--compact .scb-card__remaining,
.scb-card--compact .scb-card__composition-bar__legend {
    display: none;
}

/* =========================================================================
   Card: header row (CA/OS chip + state chip)
   ========================================================================= */

.scb-card__header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}

.scb-card__ca-os {
    display: inline-flex;
    align-items: center;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-soft);
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.6;
}

/* =========================================================================
   State chips
   ========================================================================= */

.scb-card__state-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    border-radius: 999px;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
    line-height: 1.5;
    flex-shrink: 0;
}

.scb-card__state-chip--up-for-renewal {
    background: #fef3c7;
    color: #92400e;
}

.scb-card__state-chip--overspent {
    background: #fee2e2;
    color: #991b1b;
}

.scb-card__state-chip--done {
    background: #d1fae5;
    color: #065f46;
}

.scb-card__state-chip--not-started {
    background: var(--color-surface-2);
    color: var(--color-text-muted);
}

/* =========================================================================
   Card: SC ID + subject
   ========================================================================= */

.scb-card__id-subject {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.scb-card__sc-id {
    color: var(--color-primary);
    margin-right: 4px;
}

/* =========================================================================
   Card: numbers row (€ consumed / contracted · %)
   ========================================================================= */

.scb-card__numbers {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
}

.scb-card__amounts {
    font-size: 13px;
    color: var(--color-text-soft);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.scb-card__amounts-consumed {
    font-weight: 700;
    color: var(--color-text);
}

.scb-card__pct {
    font-size: 20px;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    flex-shrink: 0;
    color: var(--color-text);
}

.scb-card--up-for-renewal .scb-card__pct   { color: var(--scb-color-up-for-renewal); }
.scb-card--overspent .scb-card__pct { color: var(--scb-color-overspent); }
.scb-card--done .scb-card__pct      { color: var(--scb-color-done); }
.scb-card--not-started .scb-card__pct { color: var(--scb-color-not-started); }

/* =========================================================================
   Composition micro-bar
   ========================================================================= */

.scb-card__composition-bar {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.scb-card__composition-bar__track {
    height: 8px;
    border-radius: 999px;
    background: var(--color-surface-2);
    overflow: hidden;
    display: flex;
    position: relative;
}

/* Unfilled track for not-started */
.scb-card--not-started .scb-card__composition-bar__track {
    background: var(--color-border);
}

.scb-card__composition-bar__segment {
    height: 100%;
    transition: width 300ms ease;
    position: relative;
}

.scb-card__composition-bar__segment--core     { background: var(--scb-seg-core); }
.scb-card__composition-bar__segment--oncall   { background: var(--scb-seg-oncall); }
.scb-card__composition-bar__segment--extended { background: var(--scb-seg-extended); }

/* Tooltip on segment hover */
.scb-card__composition-bar__segment:focus,
.scb-card__composition-bar__segment:hover {
    filter: brightness(1.15);
    cursor: default;
}

.scb-card__composition-bar__legend {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.scb-card__composition-bar__legend-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    color: var(--color-text-muted);
    font-weight: 500;
}

.scb-card__composition-bar__legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.scb-card__composition-bar__legend-dot--core     { background: var(--scb-seg-core); }
.scb-card__composition-bar__legend-dot--oncall   { background: var(--scb-seg-oncall); }
.scb-card__composition-bar__legend-dot--extended { background: var(--scb-seg-extended); }

/* =========================================================================
   Card: remaining hint
   ========================================================================= */

.scb-card__remaining {
    font-size: 11px;
    color: var(--color-text-muted);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.scb-card__remaining-days {
    font-weight: 600;
    color: var(--color-text-soft);
}

/* =========================================================================
   By-state lens — three-lane layout (WP03)
   ========================================================================= */

.scb-state-lens {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    min-height: 0;
}

.scb-state-lane {
    flex: 1 1 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--color-surface-2, #f8f9fa);
    border-radius: var(--radius-lg, 12px);
    padding: 16px;
    overflow-y: auto;
    max-height: calc(100vh - 160px);
}

.scb-state-lane__header {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    cursor: default;
    outline: none;
}

.scb-state-lane__header:focus-visible {
    outline: 2px solid var(--color-primary);
    border-radius: 4px;
}

.scb-state-lane__label {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text, #111);
    flex-shrink: 0;
}

.scb-state-lane__count {
    display: inline-flex;
    align-items: center;
    background: var(--color-border, #e5e7eb);
    color: var(--color-text-soft, #6b7280);
    border-radius: 999px;
    padding: 1px 8px;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}

.scb-state-lane__compact-chip {
    appearance: none;
    -webkit-appearance: none;
    font: inherit;
    background: var(--color-primary-soft, #eff6ff);
    color: var(--color-primary, #3b82f6);
    border: 1px solid var(--color-primary, #3b82f6);
    border-radius: 999px;
    padding: 2px 10px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: background 120ms;
    flex-shrink: 0;
}

.scb-state-lane__compact-chip:hover {
    background: var(--color-primary, #3b82f6);
    color: #fff;
}

.scb-state-lane__compact-chip--hidden {
    display: none;
}

.scb-state-lane__body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
}

/* =========================================================================
   By-urgency lens — ranked vertical list (WP03)
   ========================================================================= */

.scb-urgency-lens {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.scb-urgency-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.scb-urgency-item--top {
    position: relative;
}

.scb-urgency-item__rank {
    flex-shrink: 0;
    min-width: 36px;
    text-align: right;
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-muted, #9ca3af);
    padding-top: 18px;
    font-variant-numeric: tabular-nums;
}

.scb-urgency-item__rank--top {
    color: var(--color-primary, #3b82f6);
    font-size: 15px;
}

.scb-urgency-item__card {
    flex: 1;
    min-width: 0;
}

/* Subtle left accent for top-3 items */
.scb-urgency-item--top .scb-urgency-item__card .scb-card {
    border-left: 3px solid var(--color-primary, #3b82f6);
}

/* Lens-toggle tooltip — show formula tooltip via title on urgency btn */
.scb-lens-btn[title] {
    cursor: help;
}

/* =========================================================================
   Responsive tweaks
   ========================================================================= */

@media (max-width: 640px) {
    .scb-header {
        padding: 14px 16px 12px;
        flex-wrap: wrap;
        gap: 10px;
    }

    .scb-cards-area {
        padding: 16px;
    }

    .scb-cards-grid {
        grid-template-columns: 1fr;
    }

    .scb-state-lens {
        flex-direction: column;
    }

    .scb-state-lane {
        max-height: none;
    }
}