/*
 * My AI Usage page (NG-02 onward). Uses only the --costiva-* theme tokens from
 * theme.css so every component follows light / dark. Mobile-first: nothing here
 * may widen the page past 360px; wide content scrolls inside its own container.
 */

.usage-page { max-width: 100%; }

/* Links inside running text are underlined, never told apart by colour alone (WCAG 1.4.1, NG-13 axe). */
.usage-page :is(p, li, dd, td, .small, .usage-kpi-sub, .usage-kpi-caption, .usage-fiscal, .usage-scope) a:not(.btn):not(.nav-link):not(.dropdown-item):not(.list-group-item) {
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* ---- Sections ------------------------------------------------------------- */

.usage-section { scroll-margin-top: 5rem; }
.usage-section-head {
    border-left: 4px solid var(--costiva-accent);
    padding-left: 0.75rem;
    margin-bottom: 0.75rem;
}
.usage-section-title {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--costiva-heading);
}
.usage-section-desc {
    margin: 0.15rem 0 0;
    font-size: 0.875rem;
    color: var(--costiva-text);
}

/* ---- ⓘ tooltip (usage_tip) ------------------------------------------------ */

.usage-tip {
    position: relative;
    display: inline-flex;
    align-items: center;
    vertical-align: middle;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1;
}
.usage-tip-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: transparent;
    color: var(--costiva-muted);
    cursor: pointer;
}
/* A 44px touch target without changing the visual size. */
.usage-tip-btn::after {
    content: "";
    position: absolute;
    inset: -0.625rem;
}
.usage-tip-btn:hover,
.usage-tip-btn[aria-expanded="true"] { color: var(--costiva-accent); }
.usage-tip-btn:focus-visible { outline: 2px solid var(--costiva-accent); outline-offset: 2px; }
.usage-on-dark .usage-tip-btn { color: rgba(255, 255, 255, 0.8); }
.usage-on-dark .usage-tip-btn:hover,
.usage-on-dark .usage-tip-btn[aria-expanded="true"] { color: #fff; }
.usage-on-dark .usage-tip-btn:focus-visible { outline-color: #fff; }

.usage-tip-panel {
    position: absolute;
    top: calc(100% + 0.4rem);
    left: 0;
    z-index: 1080;
    display: block;
    width: max-content;
    max-width: min(18rem, calc(100vw - 2rem));
    padding: 0.6rem 0.75rem;
    border-radius: 0.35rem;
    background: var(--costiva-tip-bg);
    color: var(--costiva-tip-text);
    box-shadow: 0 0.5rem 1.5rem var(--costiva-shadow);
    font-size: 0.8125rem;
    font-weight: 400;
    line-height: 1.45;
    text-align: left;
    text-transform: none;
    letter-spacing: normal;
    white-space: normal;
}
.usage-tip-panel[hidden] { display: none; }
.usage-tip-panel-wide { max-width: min(22rem, calc(100vw - 2rem)); }
.usage-tip-text { display: block; }
.usage-tip-more {
    display: inline-block;
    margin-top: 0.4rem;
    color: var(--costiva-tip-link);
    font-weight: 600;
}
.usage-tip-more:hover { color: var(--costiva-tip-link); }

/* ---- Data freshness (header) --------------------------------------------- */

.usage-freshness {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.4rem;
    max-width: 100%;
    padding: 0.4rem 0.75rem;
    border-radius: 2rem;
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
    font-size: 0.875rem;
}
.usage-freshness-dot {
    flex: none;
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 50%;
}
.usage-freshness-dot.is-ok { background: #3ddc97; }
.usage-freshness-dot.is-delayed { background: #f4a100; box-shadow: 0 0 0 3px rgba(244, 161, 0, 0.35); }
.usage-freshness-dot.is-none { background: rgba(255, 255, 255, 0.55); }
.usage-freshness-vendors { display: block; margin-top: 0.5rem; }
.usage-freshness-vendor { display: block; margin-top: 0.4rem; }
/* The tip panel is dark in the light theme and light in the dark theme. */
.usage-freshness-flag { color: #ffc14d; font-weight: 700; }
[data-theme="dark"] .usage-freshness-flag { color: #8a4f00; }

/* ---- Data Dictionary -------------------------------------------------------- */

.usage-dictionary-entry { scroll-margin-top: 5rem; }
.usage-dictionary-entry:target { box-shadow: 0 0 0 3px var(--costiva-accent-soft); border-color: var(--costiva-accent); }

/* ---- Filter bar (NG-03) ------------------------------------------------------ */

turbo-frame#usage-sections { display: block; }
.usage-filters-sentinel { height: 1px; }
/* The section (not the form) sticks: its containing block is the tall frame. */
.usage-filters-section {
    position: sticky;
    top: 3.625rem; /* under the fixed top bar */
    z-index: 1010;
}
.usage-filter-bar {
    padding: 0.75rem 1rem;
    border: 1px solid var(--costiva-border);
    border-radius: 0.5rem;
    background: var(--costiva-surface);
    transition: box-shadow 0.15s ease-in-out;
}
.usage-filter-bar.is-stuck {
    border-bottom: 3px solid var(--costiva-accent);
    border-radius: 0 0 0.5rem 0.5rem;
    box-shadow: 0 0.5rem 1rem var(--costiva-shadow);
}
.usage-filter-mobile-bar { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; margin-bottom: 0.5rem; }
.usage-filter-drawer-toggle, .usage-filter-drawer-head { display: none; }
.usage-filter-selects { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; margin-bottom: 0.75rem; }
.usage-ms { position: relative; min-width: 0; }
.usage-ms-label { display: flex; align-items: center; gap: 0.25rem; margin-bottom: 0.25rem; font-size: 0.8125rem; font-weight: 600; color: var(--costiva-heading); float: none; width: auto; padding: 0; }
.usage-ms-button { width: 100%; min-height: 2.75rem; text-align: left; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; background-color: var(--costiva-surface); color: var(--costiva-heading); }
.usage-ms-panel {
    position: absolute;
    z-index: 1030;
    top: calc(100% + 0.25rem);
    left: 0;
    width: max(100%, 16rem);
    max-width: calc(100vw - 2rem);
    max-height: 22rem;
    overflow-y: auto;
    padding: 0.6rem;
    border: 1px solid var(--costiva-border);
    border-radius: 0.5rem;
    background: var(--costiva-surface);
    box-shadow: 0 0.5rem 1.5rem var(--costiva-shadow);
}
.usage-ms-panel[hidden] { display: none; }
.usage-ms-search { font-size: 1rem; margin-bottom: 0.4rem; }
.usage-ms-bulk { display: flex; gap: 1rem; margin-bottom: 0.4rem; }
.usage-ms-options { margin: 0; padding: 0; border: 0; min-width: 0; }
.usage-ms-group-head { margin: 0.4rem 0 0.15rem; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; color: var(--costiva-muted); }
.usage-ms-group.is-filtered-out .usage-ms-group-head { display: none; }
.usage-ms-option { display: flex; align-items: center; gap: 0.5rem; min-height: 2.25rem; padding: 0.15rem 0.25rem; border-radius: 0.25rem; cursor: pointer; color: var(--costiva-heading); }
.usage-ms-option:hover { background: var(--costiva-surface-2); }
.usage-ms-option .form-check-input { margin: 0; flex: none; }
.usage-ms-option[hidden] { display: none; }

.usage-period { margin: 0 0 0.75rem; padding: 0; border: 0; min-width: 0; }
.usage-pills { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.usage-pill { position: relative; margin: 0; }
.usage-pill input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.usage-pill span {
    display: inline-flex; align-items: center; min-height: 2.25rem; padding: 0.3rem 0.85rem;
    border: 1px solid var(--costiva-input-border); border-radius: 2rem; cursor: pointer;
    font-size: 0.875rem; color: var(--costiva-heading); background: var(--costiva-surface);
}
.usage-pill input:checked + span { background: var(--costiva-accent); border-color: var(--costiva-accent); color: #fff; }
[data-theme="dark"] .usage-pill input:checked + span { color: #0b1220; }
.usage-pill input:focus-visible + span { outline: 2px solid var(--costiva-accent); outline-offset: 2px; }
.usage-custom-range { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 0.5rem; }
.usage-custom-range[hidden] { display: none; }
.usage-custom-range label { display: flex; flex-direction: column; gap: 0.2rem; font-size: 0.8125rem; color: var(--costiva-heading); }
.usage-custom-range input { font-size: 1rem; }
.usage-fiscal { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; }
.usage-filter-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.usage-apply { position: relative; min-height: 2.25rem; }
.usage-apply-dot { position: absolute; top: -0.3rem; right: -0.3rem; width: 0.7rem; height: 0.7rem; border-radius: 50%; background: var(--costiva-warn); border: 2px solid var(--costiva-surface); }
.usage-apply-dot[hidden] { display: none; }
.usage-filter-hint { color: var(--costiva-danger); }
.usage-scope { color: var(--costiva-text); }
.usage-filter-backdrop { display: none; }

@media (max-width: 991.98px) {
    .usage-filter-selects { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Phones: the bar collapses to "Filters (n)" opening a bottom sheet. */
@media (max-width: 767.98px) {
    .usage-filter-bar { padding: 0.5rem 0.75rem; }
    .usage-filter-mobile-bar { margin-bottom: 0; }
    .usage-filter-drawer-toggle { display: inline-flex; min-height: 2.75rem; align-items: center; }
    .usage-filter-panel { display: none; }
    .usage-filter-panel.is-open {
        display: block;
        position: fixed;
        z-index: 1060;
        left: 0;
        right: 0;
        bottom: 0;
        max-height: 85vh;
        overflow-y: auto;
        padding: 1rem;
        border-radius: 1rem 1rem 0 0;
        background: var(--costiva-surface);
        box-shadow: 0 -0.5rem 2rem var(--costiva-shadow);
    }
    .usage-filter-panel.is-open .usage-filter-drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
    .usage-filter-selects { grid-template-columns: minmax(0, 1fr); }
    .usage-ms-panel { position: static; width: 100%; max-width: 100%; box-shadow: none; margin-top: 0.25rem; }
    .usage-filter-backdrop:not([hidden]) { display: block; position: fixed; inset: 0; z-index: 1055; background: rgba(0, 0, 0, 0.45); }
    .usage-filter-actions .btn { min-height: 2.75rem; }
    .usage-apply { flex: 1 1 auto; }
    body.usage-drawer-open { overflow: hidden; }
}

/* ---- Overview KPI cards (NG-04) -------------------------------------------- */

.usage-kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.usage-kpi { height: 100%; }
.usage-kpi .card-body { display: flex; flex-direction: column; gap: 0.35rem; }
.usage-kpi-label { display: flex; flex-wrap: wrap; align-items: center; gap: 0.3rem; font-size: 0.8125rem; font-weight: 600; color: var(--costiva-text); }
.usage-kpi-value { font-size: 1.75rem; font-weight: 700; line-height: 1.15; color: var(--costiva-heading); overflow-wrap: anywhere; }
.usage-kpi-plus { display: block; font-size: 0.875rem; font-weight: 600; color: var(--costiva-warn); }
.usage-kpi-caption { font-size: 0.8125rem; color: var(--costiva-muted); }
.usage-kpi-sub { font-size: 0.8125rem; color: var(--costiva-text); }
.usage-kpi-accent { border-top: 4px solid var(--costiva-accent); }
.usage-kpi-accent .usage-kpi-value { color: var(--costiva-accent); }
.usage-chip { display: inline-flex; align-items: center; padding: 0.05rem 0.5rem; border-radius: 1rem; font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.02em; text-transform: uppercase; background: var(--costiva-accent-soft); color: var(--costiva-accent); }
@media (max-width: 1199.98px) { .usage-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 575.98px) { .usage-kpis { grid-template-columns: minmax(0, 1fr); } }

/* ---- Subscriptions & caps (NG-05) ------------------------------------------- */

/* min-width: 0 — inside a .card (a flex column) the wrapper would otherwise grow to the table instead of scrolling. */
/* position: relative — absolutely positioned bits in the table (.visually-hidden labels) must scroll with it, not escape it. */
.usage-table-wrap { position: relative; overflow-x: auto; -webkit-overflow-scrolling: touch; min-width: 0; max-width: 100%; }
.usage-subs-table { min-width: 44rem; }
.usage-subs-table th { white-space: nowrap; font-size: 0.8125rem; color: var(--costiva-text); }
.usage-vendor-bar { display: inline-block; width: 4px; height: 1.1rem; margin-right: 0.45rem; vertical-align: middle; border-radius: 2px; }
.usage-status { display: inline-flex; align-items: center; padding: 0.1rem 0.55rem; border-radius: 1rem; font-size: 0.75rem; font-weight: 700; }
.usage-status-active { background: rgba(0, 172, 105, 0.14); color: #007a4b; }
.usage-status-idle { background: rgba(244, 161, 0, 0.18); color: #8a5a00; }
.usage-status-no_data { background: var(--costiva-surface-2); color: var(--costiva-muted); }
[data-theme="dark"] .usage-status-active { color: #3ddc97; }
[data-theme="dark"] .usage-status-idle { color: #ffc14d; }
.usage-subscription-form-card { max-width: 52rem; }
.usage-subscription-form-card .form-control, .usage-subscription-form-card .form-select { font-size: 1rem; min-height: 2.75rem; }

/* ---- Monthly pacing by vendor (NG-06) --------------------------------------- */

.usage-pacing-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem 1rem; }
.usage-pacing-controls { display: flex; flex-wrap: wrap; gap: 0.5rem 0.75rem; margin: 0; }
.usage-pacing-controls label { display: flex; align-items: center; gap: 0.4rem; font-size: 0.8125rem; font-weight: 600; margin: 0; }
.usage-pacing-controls .form-select { width: auto; min-width: 9rem; }
.usage-pacing-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 1.25rem; padding: 0.6rem 1.25rem 0; color: var(--costiva-text); }
.usage-pacing-legend > span { display: inline-flex; align-items: center; gap: 0.4rem; }
.usage-legend-swatch { display: inline-block; width: 1.4rem; height: 0.55rem; border-radius: 0.3rem; }
.usage-legend-actual { background: var(--costiva-accent); }
.usage-legend-projected { border: 1.5px dashed var(--costiva-accent); }
.usage-legend-tick { display: inline-block; width: 2px; height: 0.9rem; background: var(--costiva-heading); }
/* Headers wrap so the table fits a laptop-width card; narrower than that it scrolls in its box. */
.usage-pacing-table-wrap { container-type: inline-size; }
.usage-pacing-table { min-width: 46rem; }
.usage-pacing-table th { font-size: 0.8125rem; color: var(--costiva-text); vertical-align: bottom; }
.usage-pacing-table td { vertical-align: middle; }
.usage-pacing-table .usage-status { white-space: nowrap; }
.usage-pacing-plan { display: flex; align-items: flex-start; gap: 0.6rem; min-width: 12rem; }
.usage-avatar { flex: 0 0 auto; display: inline-flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; border-radius: 50%; color: #fff; font-weight: 700; font-size: 0.875rem; }
.usage-avatar-total { background: var(--costiva-heading); color: var(--costiva-surface); }
.usage-badge { display: inline-flex; align-items: center; margin-left: 0.25rem; padding: 0 0.45rem; border-radius: 1rem; font-size: 0.6875rem; font-weight: 600; background: var(--costiva-surface-2); color: var(--costiva-text); white-space: nowrap; }
.usage-pacing-bar { min-width: 8rem; }
.usage-pace-label { margin-top: 0.15rem; }
.usage-pacing-total td { border-top: 2px solid var(--costiva-heading); font-weight: 600; }
.usage-pacing-notices td { background: var(--costiva-surface-2); }
.usage-pacing-notices-title { margin-bottom: 0.35rem; color: var(--costiva-heading); }
/* When the table scrolls sideways, the notices stay within the visible width (dismiss buttons included). */
.usage-pacing-notices td > * { position: sticky; left: 0.5rem; max-width: calc(100cqw - 1rem); }
.usage-notice { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.75rem; padding: 0.35rem 0.6rem; margin-bottom: 0.35rem; border-left: 3px solid var(--costiva-accent); border-radius: 0.25rem; background: var(--costiva-surface); font-size: 0.875rem; }
.usage-notice:last-child { margin-bottom: 0; }
.usage-notice-warning { border-left-color: var(--costiva-warn); }
.usage-notice form { margin: 0; flex: 0 0 auto; }
.usage-notice .btn-close { width: 1rem; height: 1rem; padding: 0.75rem; background-size: 0.65rem; }
[data-theme="dark"] .usage-notice .btn-close { filter: invert(1) grayscale(100%) brightness(200%); }

/* Status pills (thresholds: App\Usage\Pacing\PacingStatus). */
.usage-pacing-within_cap { background: rgba(0, 172, 105, 0.14); color: #007a4b; }
.usage-pacing-near_cap { background: rgba(244, 161, 0, 0.12); color: #7a5200; }
.usage-pacing-trending_over { background: rgba(244, 161, 0, 0.28); color: #6b4400; }
.usage-pacing-over_cap { background: rgba(232, 21, 0, 0.14); color: #b01000; }
.usage-pacing-no_cap, .usage-pacing-no_data { background: var(--costiva-surface-2); color: var(--costiva-muted); }
.usage-pacing-fixed { background: var(--costiva-accent-soft); color: var(--costiva-accent); }
[data-theme="dark"] .usage-pacing-within_cap { color: #3ddc97; }
[data-theme="dark"] .usage-pacing-near_cap { color: #ffd27a; }
[data-theme="dark"] .usage-pacing-trending_over { color: #ffc14d; }
[data-theme="dark"] .usage-pacing-over_cap { color: #ff8a7a; }

/* Trajectory bar (NG-F20): the colour follows the status. */
.usage-trajectory { display: block; width: 100%; height: 1.25rem; overflow: visible; --bar: var(--costiva-ok); }
.usage-trajectory.status-near_cap, .usage-trajectory.status-trending_over { --bar: var(--costiva-warn); }
.usage-trajectory.status-over_cap { --bar: var(--costiva-danger); }
.usage-trajectory.status-fixed, .usage-trajectory.status-no_cap, .usage-trajectory.status-no_data { --bar: var(--costiva-muted); }
.usage-trajectory-track { fill: var(--costiva-surface-2); }
.usage-trajectory-actual { fill: var(--bar); }
.usage-trajectory.status-fixed .usage-trajectory-actual { fill-opacity: 0.45; }
.usage-trajectory-projected { fill: none; stroke: var(--bar); stroke-width: 1.5; stroke-dasharray: 4 3; }
.usage-trajectory-overflow { fill: none; stroke: var(--bar); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.usage-trajectory-pace { stroke: var(--costiva-heading); stroke-width: 2; }

/* Phones and small tablets: each row becomes a stacked card. */
@media (max-width: 767.98px) {
    .usage-pacing-controls, .usage-pacing-controls label { width: 100%; }
    .usage-pacing-controls .form-select { flex: 1 1 auto; font-size: 1rem; min-height: 2.75rem; }
    .usage-pacing-legend { padding: 0.6rem 1rem 0; }
    .usage-pacing-table-wrap { overflow-x: visible; }
    .usage-pacing-table { min-width: 0; }
    .usage-pacing-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
    .usage-pacing-table, .usage-pacing-table tbody, .usage-pacing-table tr, .usage-pacing-table td { display: block; width: 100%; }
    .usage-pacing-table tr { padding: 0.75rem 1rem; border-bottom: 1px solid var(--costiva-border); }
    .usage-pacing-table td { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.75rem; padding: 0.3rem 0; border: 0; text-align: right; }
    .usage-pacing-table td::before { content: attr(data-label); flex: 0 0 auto; font-size: 0.75rem; font-weight: 600; color: var(--costiva-muted); text-align: left; }
    .usage-pacing-table td[data-label="Vendor / plan"] { display: block; text-align: left; }
    .usage-pacing-table td[data-label="Vendor / plan"]::before { content: none; }
    .usage-pacing-table td.usage-pacing-bar { display: block; }
    .usage-pacing-table td.usage-pacing-bar::before { display: block; margin-bottom: 0.25rem; }
    .usage-pacing-plan { min-width: 0; }
    .usage-pacing-bar { min-width: 0; }
    .usage-pacing-total td { border-top: 0; }
    .usage-pacing-total { border-top: 2px solid var(--costiva-heading); }
    .usage-pacing-notices td { display: block; text-align: left; }
    .usage-pacing-notices td::before { content: none; }
    .usage-notice .btn-close { padding: 1.1rem; }
}

/* ---- Your spend ranking (NG-07) --------------------------------------------- */

.usage-ranking-panels { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; }
.usage-ranking-panel { min-width: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.usage-ranking-panel + .usage-ranking-panel { border-left: 1px solid var(--costiva-border); padding-left: 1.5rem; }
.usage-ranking-panel-title { display: flex; align-items: center; gap: 0.3rem; margin: 0; font-size: 0.875rem; font-weight: 700; color: var(--costiva-heading); }
.usage-ranking-sentence { margin: 0; font-weight: 600; color: var(--costiva-heading); }
.usage-ranking-state { padding: 0.75rem; border-radius: 0.4rem; background: var(--costiva-surface-2); color: var(--costiva-text); }
.usage-ranking-hint { margin: 0; padding: 0.5rem 0.65rem; border-left: 3px solid var(--costiva-warn); border-radius: 0.25rem; background: var(--costiva-surface-2); }
.usage-ranking-legend { display: flex; flex-wrap: wrap; gap: 0.35rem 1rem; color: var(--costiva-text); }
.usage-ranking-legend > span { display: inline-flex; align-items: center; gap: 0.4rem; }

/* Horizontal bars: trend and tier mix. */
.usage-hbar { display: flex; flex-direction: column; gap: 0.25rem; }
.usage-hbar-head { display: flex; justify-content: space-between; align-items: baseline; gap: 0.75rem; font-size: 0.8125rem; }
.usage-hbar-head > span:last-child { text-align: right; white-space: nowrap; }
.usage-hbar-track { position: relative; height: 0.6rem; border-radius: 0.3rem; background: var(--costiva-surface-2); }
.usage-hbar-fill { height: 100%; border-radius: 0.3rem; background: var(--costiva-accent); }
.usage-hbar-history { background: var(--costiva-muted); }
.usage-tier-premium { background: #6900c7; }
.usage-tier-standard { background: var(--costiva-accent); }
.usage-tier-light { background: #00ac69; }
[data-theme="dark"] .usage-tier-premium { background: #a46bff; }
.usage-hbar-tick { position: absolute; top: -0.2rem; bottom: -0.2rem; width: 2px; margin-left: -1px; background: var(--costiva-heading); }

/* Percentile: a big ordinal and a track with a marker. */
.usage-ranking-ordinal { font-size: 2rem; font-weight: 700; line-height: 1.1; color: var(--costiva-accent); }
.usage-ranking-ordinal span { font-size: 1rem; font-weight: 600; color: var(--costiva-text); }
.usage-ranking-track { position: relative; height: 0.6rem; margin: 0.4rem 0 0.1rem; border-radius: 0.3rem; background: linear-gradient(90deg, rgba(0, 172, 105, 0.35), rgba(244, 161, 0, 0.35), rgba(232, 21, 0, 0.35)); }
.usage-ranking-track-median { position: absolute; top: -0.15rem; bottom: -0.15rem; width: 2px; margin-left: -1px; background: var(--costiva-muted); }
.usage-ranking-marker { position: absolute; top: 50%; width: 1rem; height: 1rem; margin: -0.5rem 0 0 -0.5rem; border: 3px solid var(--costiva-surface); border-radius: 50%; background: var(--costiva-heading); box-shadow: 0 0 0 1px var(--costiva-heading); }
.usage-ranking-track-labels { display: flex; justify-content: space-between; gap: 0.5rem; color: var(--costiva-muted); }

/* Comparison scope switch. */
.usage-ranking-controls { display: flex; flex-direction: column; gap: 0.5rem; margin: 0; }
.usage-segmented { display: flex; border: 1px solid var(--costiva-input-border); border-radius: 0.4rem; overflow: hidden; }
.usage-segment { flex: 1 1 50%; min-height: 2.25rem; padding: 0.3rem 0.75rem; border: 0; background: var(--costiva-surface); color: var(--costiva-text); font-size: 0.8125rem; font-weight: 600; }
.usage-segment + .usage-segment { border-left: 1px solid var(--costiva-input-border); }
.usage-segment[aria-pressed="true"] { background: var(--costiva-accent); color: #fff; }
[data-theme="dark"] .usage-segment[aria-pressed="true"] { color: #0b1220; }
.usage-segment:focus-visible { outline: 2px solid var(--costiva-accent); outline-offset: -2px; }
.usage-ranking-entity { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.8125rem; font-weight: 600; }

@media (max-width: 991.98px) {
    .usage-ranking-panels { grid-template-columns: minmax(0, 1fr); }
    .usage-ranking-panel + .usage-ranking-panel { border-left: 0; padding-left: 0; border-top: 1px solid var(--costiva-border); padding-top: 1.25rem; }
}
@media (max-width: 767.98px) {
    .usage-segment { min-height: 2.75rem; }
    .usage-ranking-entity .form-select { font-size: 1rem; min-height: 2.75rem; }
}

/* ---- Token usage (NG-08) ---------------------------------------------------- */

.usage-tokens-head { display: flex; flex-wrap: wrap; gap: 0.75rem 2.5rem; }
.usage-tokens-stat { display: flex; flex-direction: column; gap: 0.1rem; }
.usage-tokens-stat-label { display: flex; align-items: center; gap: 0.3rem; font-size: 0.8125rem; font-weight: 600; color: var(--costiva-text); }
.usage-tokens-stat-value { font-size: 1.35rem; font-weight: 700; color: var(--costiva-heading); }
.usage-token-cards { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0.75rem; }
.usage-token-card { display: flex; flex-direction: column; gap: 0.3rem; min-width: 0; padding: 0.85rem; border: 1px solid var(--costiva-border); border-radius: 0.5rem; background: var(--costiva-surface); }
.usage-token-card-total { border: 2px solid var(--costiva-accent); background: var(--costiva-accent-soft); }
.usage-token-card-label { display: flex; align-items: center; gap: 0.3rem; font-size: 0.8125rem; font-weight: 700; color: var(--costiva-heading); }
.usage-token-card-caption { font-size: 0.75rem; color: var(--costiva-muted); }
.usage-token-card-value { font-size: 1.4rem; font-weight: 700; line-height: 1.2; color: var(--costiva-heading); overflow-wrap: anywhere; }
.usage-token-card-value span { font-size: 0.8125rem; font-weight: 600; color: var(--costiva-text); }
.usage-token-card-total .usage-token-card-value { color: var(--costiva-accent); }
/* On the accent tint, small grey text falls below AA — use the heading colour there. */
.usage-token-card-total :is(.usage-token-card-caption, .usage-token-card-value span, .usage-token-card-spend) { color: var(--costiva-heading); }
.usage-token-card-spend { font-size: 0.8125rem; color: var(--costiva-text); }
.usage-chip-muted { align-self: flex-start; gap: 0.25rem; background: var(--costiva-surface-2); color: var(--costiva-text); text-transform: none; letter-spacing: 0; }
.usage-tokens-notes { padding-left: 1.1rem; }
.usage-token-cards:focus-visible { outline: 2px solid var(--costiva-accent); outline-offset: 4px; }
@media (max-width: 1199.98px) { .usage-token-cards { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
/* Phones and small tablets: a horizontal scroll-snap carousel inside the card. */
@media (max-width: 767.98px) {
    .usage-token-cards { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; padding-bottom: 0.5rem; }
    .usage-token-card { flex: 0 0 78%; scroll-snap-align: start; }
}
@media (prefers-reduced-motion: no-preference) { .usage-token-cards { scroll-behavior: smooth; } }

/* ---- Spend and usage over time (NG-09) -------------------------------------- */

.usage-ts-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem 1rem; }
.usage-ts-controls { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0; }
.usage-ts-controls .usage-segmented { flex: 0 0 auto; }
.usage-ts-controls .usage-segment { flex: 0 0 auto; }
.usage-segment:disabled { opacity: 0.45; cursor: not-allowed; }
.usage-ts-legend { display: flex; flex-wrap: wrap; gap: 0.35rem 0.5rem; margin-bottom: 0.5rem; }
.usage-ts-legend-item { display: inline-flex; align-items: center; gap: 0.35rem; min-height: 2rem; padding: 0.15rem 0.55rem; border: 1px solid var(--costiva-border); border-radius: 1rem; background: var(--costiva-surface); color: var(--costiva-text); font-size: 0.8125rem; }
.usage-ts-legend-item[aria-pressed="false"] { opacity: 0.45; text-decoration: line-through; }
.usage-ts-legend-static { border-style: dashed; }
.usage-ts-swatch { display: inline-block; width: 0.75rem; height: 0.75rem; border-radius: 0.2rem; flex: 0 0 auto; }
.usage-ts-swatch-line { height: 2px; background: var(--costiva-heading); }
.usage-ts-chart-wrap { position: relative; }
.usage-ts-chart { width: 100%; min-height: 300px; }
.usage-ts-svg { display: block; max-width: 100%; }
.usage-ts-grid { stroke: var(--costiva-border); stroke-width: 1; }
.usage-ts-axis { fill: var(--costiva-muted); font-size: 11px; }
.usage-ts-bar.usage-ts-partial { fill-opacity: 0.45; }
.usage-ts-partial-label { fill: var(--costiva-muted); font-size: 10px; font-style: italic; }
.usage-ts-line { fill: none; stroke: var(--costiva-heading); stroke-width: 2; }
.usage-ts-dot { fill: var(--costiva-heading); }
.usage-ts-hit { fill: transparent; cursor: pointer; outline: none; }
.usage-ts-hit:hover, .usage-ts-hit:focus-visible { fill: var(--costiva-accent-soft); }
.usage-ts-empty { margin: 2rem 0; text-align: center; color: var(--costiva-muted); }
.usage-ts-tooltip { position: absolute; top: 0.5rem; z-index: 5; min-width: 12rem; max-width: 18rem; padding: 0.6rem 0.75rem; border-radius: 0.4rem; background: var(--costiva-tip-bg); color: var(--costiva-tip-text); font-size: 0.8125rem; box-shadow: 0 0.25rem 1rem var(--costiva-shadow); pointer-events: none; }
.usage-ts-tooltip ul { list-style: none; margin: 0.35rem 0; padding: 0; }
.usage-ts-tooltip li, .usage-ts-tip-total { display: flex; align-items: center; gap: 0.4rem; justify-content: space-between; }
.usage-ts-tooltip li span:nth-child(2) { flex: 1 1 auto; }
.usage-ts-tip-title { font-weight: 700; }
.usage-ts-tip-total { border-top: 1px solid rgba(255, 255, 255, 0.25); padding-top: 0.25rem; }
.usage-ts-table { margin-top: 0.75rem; }
.usage-ts-table summary { cursor: pointer; font-size: 0.875rem; font-weight: 600; color: var(--costiva-accent); }
.usage-ts-table table { min-width: 28rem; font-size: 0.8125rem; }
@media (max-width: 767.98px) {
    .usage-ts-controls, .usage-ts-controls .usage-segmented { width: 100%; }
    .usage-ts-controls .usage-segment { flex: 1 1 0; min-height: 2.75rem; }
    .usage-ts-legend-item { min-height: 2.75rem; }
}

/* ---- Spend by vendor & offering (NG-10) ------------------------------------- */

.usage-flow-chart { width: 100%; min-height: 240px; }
[data-layout="bars"] .usage-flow-chart, [data-layout="empty"] .usage-flow-chart { min-height: 0; }
.usage-flow-svg { display: block; max-width: 100%; overflow: visible; }
.usage-flow-link { fill: none; stroke-opacity: 0.4; cursor: pointer; outline: none; }
.usage-flow-link:hover, .usage-flow-link:focus-visible { stroke-opacity: 0.7; }
.usage-flow-node { cursor: pointer; outline: none; }
.usage-flow-node:focus-visible rect { stroke: var(--costiva-accent); stroke-width: 3px; }
.usage-flow-label { fill: var(--costiva-heading); font-size: 12px; font-weight: 600; }
.usage-flow-amount { fill: var(--costiva-muted); font-weight: 400; }
.usage-flow-contains { margin: 0.35rem 0 0; padding-left: 1rem; font-size: 0.75rem; }
.usage-flow-bars { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.85rem; }
.usage-flow-bar-head { display: flex; justify-content: space-between; gap: 0.5rem; font-size: 0.875rem; font-weight: 600; color: var(--costiva-heading); }
.usage-flow-bar { display: flex; height: 0.85rem; margin: 0.3rem 0; border-radius: 0.3rem; overflow: hidden; background: var(--costiva-surface-2); }
.usage-flow-bar span { height: 100%; border-right: 2px solid var(--costiva-surface); }
.usage-flow-bar span:nth-child(even) { opacity: 0.65; }
.usage-flow-bar-parts { font-size: 0.75rem; color: var(--costiva-text); }

/* ---- All model spend and usage (NG-11) -------------------------------------- */

.usage-models-notes { padding-left: 1.1rem; color: var(--costiva-text); }
.usage-models-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; margin-bottom: 0.75rem; }
.usage-models-search { flex: 1 1 18rem; margin: 0; }
.usage-models-search .form-control { font-size: 1rem; }
.usage-models-scroll { position: relative; max-height: 32rem; overflow: auto; min-width: 0; border: 1px solid var(--costiva-border); border-radius: 0.4rem; }
.usage-models-table { min-width: 48rem; }
.usage-models-table thead th { position: sticky; top: 0; z-index: 2; background: var(--costiva-surface); box-shadow: inset 0 -1px 0 var(--costiva-border); white-space: nowrap; font-size: 0.8125rem; }
.usage-sort { padding: 0; border: 0; background: none; color: var(--costiva-heading); font-weight: 700; }
.usage-sort:focus-visible { outline: 2px solid var(--costiva-accent); outline-offset: 2px; }
.usage-sort-indicator { display: inline-block; min-width: 0.8rem; margin-left: 0.15rem; font-size: 0.7rem; }
.usage-models-sharebar { height: 4px; margin-top: 0.3rem; border-radius: 2px; background: var(--costiva-surface-2); overflow: hidden; max-width: 12rem; }
.usage-models-sharebar span { display: block; height: 100%; }
.usage-models-table mark { padding: 0 0.1em; border-radius: 0.2em; background: rgba(244, 161, 0, 0.35); color: inherit; }
@media (max-width: 767.98px) {
    .usage-models-scroll { max-height: none; overflow: visible; border: 0; }
    .usage-models-table { min-width: 0; }
    .usage-models-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
    .usage-models-table, .usage-models-table tbody, .usage-models-table tr, .usage-models-table td { display: block; width: 100%; }
    .usage-models-table tr { padding: 0.75rem; margin-bottom: 0.6rem; border: 1px solid var(--costiva-border); border-radius: 0.5rem; }
    .usage-models-table tr[hidden] { display: none; }
    .usage-models-table td { display: flex; justify-content: space-between; gap: 0.75rem; padding: 0.2rem 0; border: 0; text-align: right; }
    .usage-models-table td::before { content: attr(data-label); font-size: 0.75rem; font-weight: 600; color: var(--costiva-muted); text-align: left; }
    .usage-models-table td[data-label="Model"] { display: block; text-align: left; }
    .usage-models-table td[data-label="Model"]::before { content: none; }
}

/* ---- Help: tour, FAQs, dictionary, feedback (NG-12) ------------------------- */

.usage-honeypot { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.usage-modal { position: fixed; inset: 0; z-index: 1080; display: flex; align-items: center; justify-content: center; padding: 1rem; background: rgba(0, 0, 0, 0.45); }
.usage-modal[hidden] { display: none; }
.usage-modal-dialog { width: 100%; max-width: 36rem; max-height: calc(100vh - 2rem); overflow-y: auto; padding: 1.25rem; border-radius: 0.6rem; background: var(--costiva-surface); color: var(--costiva-text); box-shadow: 0 1rem 3rem var(--costiva-shadow); text-align: left; }
.usage-modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
.usage-feedback-form textarea { font-size: 1rem; }
.usage-feedback-form legend { font-size: 0.875rem; font-weight: 600; margin-bottom: 0.4rem; }
.usage-feedback-context summary { cursor: pointer; font-size: 0.875rem; font-weight: 600; color: var(--costiva-accent); }
.usage-toast { position: fixed; right: 1rem; bottom: 1rem; z-index: 1090; max-width: 22rem; padding: 0.75rem 1rem; border-radius: 0.5rem; background: var(--costiva-tip-bg); color: var(--costiva-tip-text); box-shadow: 0 0.5rem 1.5rem var(--costiva-shadow); font-size: 0.875rem; }
[data-theme="dark"] .usage-modal-dialog .btn-close { filter: invert(1) grayscale(100%) brightness(200%); }

.usage-tour-link { padding: 0; border: 0; background: none; color: inherit; text-decoration: underline; font-size: 0.875rem; }
.usage-tour { position: fixed; right: 1.5rem; bottom: 1.5rem; z-index: 1085; width: min(24rem, calc(100vw - 2rem)); padding: 1rem 1.1rem; border-radius: 0.6rem; background: var(--costiva-surface); color: var(--costiva-text); box-shadow: 0 1rem 3rem var(--costiva-shadow); border: 1px solid var(--costiva-border); }
.usage-tour[hidden] { display: none; }
.usage-tour-progress { font-size: 0.75rem; font-weight: 600; color: var(--costiva-muted); }
.usage-tour-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: flex-end; margin-top: 0.75rem; }
.usage-tour-actions .btn { min-height: 2.5rem; }
.usage-tour-target { position: relative; z-index: 1; outline: 3px solid var(--costiva-accent); outline-offset: 4px; border-radius: 0.4rem; }
@media (max-width: 767.98px) {
    .usage-tour { right: 0; bottom: 0; left: 0; width: 100%; border-radius: 0.9rem 0.9rem 0 0; padding-bottom: calc(1rem + env(safe-area-inset-bottom)); }
    .usage-tour-actions .btn { flex: 1 1 0; min-height: 2.75rem; }
}

.usage-faq-item { border-bottom: 1px solid var(--costiva-border); padding: 0.85rem 0; }
.usage-faq-item:last-child { border-bottom: 0; }
.usage-faq-item summary { cursor: pointer; color: var(--costiva-heading); }
.usage-faq-item summary::marker { color: var(--costiva-accent); }
.usage-faq-answer { padding: 0.5rem 0 0 1.1rem; }
.usage-dictionary-search { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; }
.usage-dictionary-search .form-control { flex: 1 1 18rem; font-size: 1rem; }
.usage-dictionary-toc { display: flex; flex-wrap: wrap; gap: 0.35rem 1rem; }
.usage-dictionary-group[hidden], .usage-dictionary-entry[hidden] { display: none !important; }
.usage-dictionary-anchor { margin-left: 0.25rem; color: var(--costiva-muted); text-decoration: underline; text-underline-offset: 2px; }
.usage-dictionary-entry:target { outline: 3px solid var(--costiva-accent); }