/* ══════════════════════════════════════════════════════════════════════════
   KPI Dashboard
   ══════════════════════════════════════════════════════════════════════════ */

:root {
    --kpi-ring-bg: #e5e7eb;
    --kpi-text: #1f2937;
    --kpi-surface: #ffffff;
    --kpi-border: #e5e7eb;
    --kpi-muted: #6b7280;
    --kpi-radius: 1rem;
    --kpi-radius-sm: 0.625rem;
    --kpi-shadow: 0 1px 4px rgba(0,0,0,0.08), 0 4px 16px rgba(0,0,0,0.06);
    --kpi-shadow-lg: 0 4px 20px rgba(0,0,0,0.12);
}

@media (prefers-color-scheme: dark) {
    :root {
        --kpi-ring-bg: #374151;
        --kpi-text: #f9fafb;
        --kpi-surface: #1f2937;
        --kpi-border: #374151;
        --kpi-muted: #9ca3af;
    }
}

[data-theme="dark"] {
    --kpi-ring-bg: var(--surface-alt);
    --kpi-text: var(--text);
    --kpi-surface: var(--surface);
    --kpi-border: var(--border);
    --kpi-muted: var(--text-secondary);
    --kpi-shadow: 0 1px 4px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.25);
    --kpi-shadow-lg: 0 4px 20px rgba(0,0,0,0.4);
}

/* ── Page Shell ──────────────────────────────────────────────────────────── */
.kpi-page {
    padding: 1.5rem 1.5rem 3rem;
    max-width: 1600px;
    margin: 0 auto;
}

/* ── Page Header ─────────────────────────────────────────────────────────── */
.kpi-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.kpi-header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.kpi-header-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.875rem;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: #fff;
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.kpi-title {
    font-size: 1.625rem;
    font-weight: 800;
    margin: 0 0 0.15rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.kpi-subtitle {
    font-size: 0.875rem;
    color: var(--kpi-muted);
    margin: 0;
}

.kpi-header-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.kpi-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.18s;
}

.kpi-btn--ghost {
    background: var(--kpi-surface);
    color: var(--kpi-text);
    border: 1.5px solid var(--kpi-border);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.kpi-btn--ghost:hover {
    background: #f3f4f6;
    border-color: #9ca3af;
    transform: translateY(-1px);
    box-shadow: var(--kpi-shadow);
}

.kpi-btn--primary {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: #fff;
    box-shadow: 0 3px 10px rgba(99, 102, 241, 0.35);
}

.kpi-btn--primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 5px 16px rgba(99, 102, 241, 0.45);
}

/* ── Filter Bar ──────────────────────────────────────────────────────────── */
.kpi-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    align-items: flex-end;
    background: var(--kpi-surface);
    border: 1.5px solid var(--kpi-border);
    border-radius: var(--kpi-radius);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--kpi-shadow);
}

.kpi-filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.kpi-filter-inline {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
}

.kpi-filter-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--kpi-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.kpi-filter-sep {
    color: var(--kpi-muted);
    font-size: 0.875rem;
    align-self: center;
}

.kpi-input {
    padding: 0.45rem 0.75rem;
    border: 1.5px solid var(--kpi-border);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    background: var(--kpi-surface);
    color: var(--kpi-text);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.kpi-input:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

/* Period pills */
.kpi-period-pills {
    display: flex;
    gap: 0.35rem;
}

.kpi-period-pill {
    padding: 0.35rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    border: 1.5px solid var(--kpi-border);
    background: var(--kpi-surface);
    color: var(--kpi-muted);
    transition: all 0.15s;
}

.kpi-period-pill:hover {
    border-color: #6366f1;
    color: #6366f1;
}

.kpi-period-pill.active {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}

/* Toggle chips */
.kpi-toggle-chips {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.kpi-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    border: 1.5px solid var(--kpi-border);
    background: var(--kpi-surface);
    color: var(--kpi-muted);
    transition: all 0.15s;
}

.kpi-chip input[type="checkbox"] {
    display: none;
}

.kpi-chip.active {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(99,102,241,0.25);
}

/* ── Toast ───────────────────────────────────────────────────────────────── */
.kpi-toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #fff;
    padding: 0.75rem 1.25rem;
    border-radius: 0.75rem;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(34,197,94,0.4);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: kpi-toast-in 0.25s ease;
}

@keyframes kpi-toast-in {
    from { opacity: 0; transform: translateY(0.5rem); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Loading ─────────────────────────────────────────────────────────────── */
.kpi-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 5rem 0;
    gap: 1rem;
    color: var(--kpi-muted);
}

.kpi-spinner {
    width: 2.5rem;
    height: 2.5rem;
    border: 3px solid var(--kpi-border);
    border-top-color: #6366f1;
    border-radius: 50%;
    animation: kpi-spin 0.75s linear infinite;
}

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

/* ══════════════════════════════════════════════════════════════════════════
   Hero KPI Cards
══════════════════════════════════════════════════════════════════════════ */
.kpi-hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.kpi-hero-card {
    border-radius: var(--kpi-radius);
    padding: 1.25rem 1.25rem 1rem;
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: var(--kpi-shadow-lg);
    transition: transform 0.18s, box-shadow 0.18s;
}

.kpi-hero-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(0,0,0,0.18);
}

.kpi-hero-card--blue   { background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%); }
.kpi-hero-card--red    { background: linear-gradient(135deg, #ef4444 0%, #b91c1c 100%); }
.kpi-hero-card--green  { background: linear-gradient(135deg, #22c55e 0%, #15803d 100%); }
.kpi-hero-card--purple { background: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%); }
.kpi-hero-card--orange { background: linear-gradient(135deg, #f97316 0%, #c2410c 100%); }
.kpi-hero-card--teal   { background: linear-gradient(135deg, #14b8a6 0%, #0f766e 100%); }

.kpi-hero-inner {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.kpi-hero-icon {
    width: 2.75rem;
    height: 2.75rem;
    min-width: 2.75rem;
    border-radius: 0.75rem;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.kpi-hero-value {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.kpi-hero-label {
    font-size: 0.875rem;
    font-weight: 600;
    opacity: 0.95;
    margin-top: 0.15rem;
}

.kpi-hero-sub {
    font-size: 0.75rem;
    opacity: 0.75;
    margin-top: 0.2rem;
}

.kpi-hero-sparkline {
    position: absolute;
    bottom: 0.75rem;
    right: 1rem;
    opacity: 0.45;
    pointer-events: none;
}

/* ══════════════════════════════════════════════════════════════════════════
   Section Header
══════════════════════════════════════════════════════════════════════════ */
.kpi-section {
    margin-bottom: 2rem;
}

.kpi-section-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.kpi-section-header h2 {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0;
}

.kpi-section-header i {
    font-size: 1.25rem;
}

.text-blue   { color: #3b82f6; }
.text-orange { color: #f97316; }
.text-purple { color: #8b5cf6; }
.text-teal   { color: #14b8a6; }

/* ══════════════════════════════════════════════════════════════════════════
   Widget Grid & Widget
══════════════════════════════════════════════════════════════════════════ */
.kpi-widget-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.kpi-widget {
    background: var(--kpi-surface);
    border: 1.5px solid var(--kpi-border);
    border-radius: var(--kpi-radius);
    padding: 1.25rem;
    box-shadow: var(--kpi-shadow);
    transition: box-shadow 0.18s;
}

.kpi-widget:hover {
    box-shadow: var(--kpi-shadow-lg);
}

.kpi-widget--wide {
    grid-column: span 2;
}

@media (max-width: 700px) {
    .kpi-widget--wide {
        grid-column: span 1;
    }
}

.kpi-widget-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--kpi-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 1rem;
}

/* ── Donut ───────────────────────────────────────────────────────────────── */
.kpi-donut-wrap {
    display: flex;
    justify-content: center;
    margin-bottom: 0.75rem;
}

/* ── Legend ──────────────────────────────────────────────────────────────── */
.kpi-legend {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.kpi-legend-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
}

.kpi-legend-dot {
    width: 0.625rem;
    height: 0.625rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.kpi-legend-label {
    flex: 1;
    color: var(--kpi-text);
}

.kpi-legend-val {
    font-weight: 700;
    color: var(--kpi-muted);
    font-size: 0.8125rem;
}

/* ── Gauge ───────────────────────────────────────────────────────────────── */
.kpi-gauge-wrap {
    display: flex;
    justify-content: center;
    margin-bottom: 0.75rem;
}

/* ── Stat Row ────────────────────────────────────────────────────────────── */
.kpi-stat-row {
    display: flex;
    gap: 0.75rem;
    justify-content: space-around;
    margin-top: 0.5rem;
}

.kpi-stat-cell {
    text-align: center;
}

.kpi-stat-num {
    font-size: 1.375rem;
    font-weight: 800;
}

.kpi-stat-lbl {
    font-size: 0.6875rem;
    color: var(--kpi-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-top: 0.15rem;
}

/* ── Bar Group ───────────────────────────────────────────────────────────── */
.kpi-bar-group {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    padding: 0 0.25rem;
}

.kpi-bar-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.kpi-bar-lbl {
    min-width: 7rem;
    max-width: 10rem;
    font-size: 0.8125rem;
    font-weight: 600;
    flex-shrink: 0;
    text-align: right;
    padding-right: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.kpi-bar-track {
    flex: 1;
    height: 0.625rem;
    background: var(--kpi-ring-bg);
    border-radius: 2rem;
    overflow: hidden;
}

.kpi-bar-fill {
    height: 100%;
    border-radius: 2rem;
    transition: width 0.6s cubic-bezier(.4,0,.2,1);
    min-width: 2px;
}

.kpi-bar-val {
    width: 2.5rem;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--kpi-muted);
    text-align: right;
}

/* ── List widget ─────────────────────────────────────────────────────────── */
.kpi-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.kpi-list-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
}

.kpi-list-rank {
    width: 1.25rem;
    font-weight: 800;
    color: var(--kpi-muted);
    font-size: 0.75rem;
    flex-shrink: 0;
    text-align: center;
}

.kpi-list-name {
    width: 7rem;
    flex-shrink: 0;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kpi-list-bar-wrap {
    flex: 1;
    height: 0.5rem;
    background: var(--kpi-ring-bg);
    border-radius: 2rem;
    overflow: hidden;
}

.kpi-list-bar {
    height: 100%;
    border-radius: 2rem;
    transition: width 0.6s cubic-bezier(.4,0,.2,1);
}

.kpi-list-score {
    width: 4.5rem;
    font-weight: 700;
    text-align: right;
    font-size: 0.8125rem;
    flex-shrink: 0;
}

/* Bradford Legend */
.kpi-bradford-legend {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 0.75rem;
    flex-wrap: wrap;
}

/* ── Big stat grid ───────────────────────────────────────────────────────── */
.kpi-big-stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.kpi-big-stat {
    background: color-mix(in srgb, var(--accent, #6366f1) 8%, var(--kpi-surface));
    border: 1.5px solid color-mix(in srgb, var(--accent, #6366f1) 20%, transparent);
    border-radius: 0.75rem;
    padding: 0.875rem;
    text-align: center;
    transition: transform 0.15s;
}

.kpi-big-stat:hover {
    transform: translateY(-2px);
}

.kpi-big-val {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent, #6366f1);
    line-height: 1.1;
}

.kpi-big-lbl {
    font-size: 0.75rem;
    color: var(--kpi-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-top: 0.25rem;
}

/* ── Column Chart ────────────────────────────────────────────────────────── */
.kpi-column-chart {
    display: flex;
    align-items: flex-end;
    gap: 0.35rem;
    height: 120px;
    padding-top: 1.5rem;
}

.kpi-col-wrap {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    height: 100%;
}

.kpi-col-val {
    font-size: 0.625rem;
    font-weight: 700;
    color: var(--kpi-muted);
    margin-bottom: 0.2rem;
    min-height: 0.875rem;
}

.kpi-col-bar {
    width: 100%;
    border-radius: 0.3rem 0.3rem 0 0;
    transition: height 0.6s cubic-bezier(.4,0,.2,1);
    min-height: 2px;
    max-height: 90px;
}

.kpi-col-lbl {
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--kpi-muted);
    margin-top: 0.25rem;
    text-transform: uppercase;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
    .kpi-hero-grid {
        grid-template-columns: 1fr;
    }

    .kpi-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .kpi-filter-bar {
        flex-direction: column;
    }

    .kpi-big-stat-grid {
        grid-template-columns: 1fr 1fr;
    }
}