.admin-usage-page {
    max-width: 1280px;
}

.usage-header {
    margin-bottom: 1.5rem;
}
.usage-header h1 {
    margin: 0.25rem 0 0.75rem;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary), var(--accent-tertiary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.1;
}
.usage-sub {
    color: var(--text-secondary);
    margin: 0.25rem 0 0.75rem;
    font-size: 1rem;
}
.usage-controls {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
    margin-top: 0.6rem;
}
.usage-period-picker {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.usage-period-picker select {
    background: rgba(0, 0, 0, 0.28);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 0.4rem 0.7rem;
    font-size: 0.88rem;
    cursor: pointer;
}
.usage-period-label {
    color: var(--text-tertiary);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.usage-btn {
    appearance: none;
    padding: 0.55rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--glass-border);
    background: linear-gradient(135deg, var(--accent-secondary, #ff8bd0), var(--accent-tertiary, #7ea8ff));
    color: #111;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.9rem;
    transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.usage-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 8px 22px rgba(255, 139, 208, 0.25);
}
.usage-btn:disabled { opacity: 0.6; cursor: progress; }
.usage-btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    border-color: var(--glass-border);
}
.usage-btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.12);
}
.usage-cache-status {
    font-size: 0.78rem;
    color: var(--text-tertiary);
}
.usage-cache-status[data-state="cached"] { color: #a3bdff; }
.usage-cache-status[data-state="fresh"]  { color: #8fe6c0; }

.usage-gate {
    background: rgba(255, 255, 255, 0.04);
    border: 1px dashed var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
    color: var(--text-secondary);
}
.usage-gate h2 { margin: 0 0 0.5rem; color: var(--text-primary); }
.usage-gate code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.1rem 0.45rem;
    border-radius: 6px;
    font-size: 0.85em;
}

.usage-kpis {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.kpi-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    padding: 1.1rem 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.kpi-card-primary {
    background: linear-gradient(180deg, rgba(255, 139, 208, 0.1), rgba(126, 168, 255, 0.05));
    border-color: rgba(255, 139, 208, 0.35);
}
.kpi-label {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.kpi-value {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Outfit', system-ui, sans-serif;
    line-height: 1.1;
}
.kpi-foot {
    font-size: 0.78rem;
    color: var(--text-secondary);
}
.kpi-meter {
    height: 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    overflow: hidden;
    margin-top: 0.4rem;
}
.kpi-meter-bar {
    height: 100%;
    border-radius: 999px;
    width: 0%;
    background: linear-gradient(90deg, #8fe6c0, #a3bdff);
    transition: width 0.4s ease;
}
.kpi-meter-bar[data-level="warn"]     { background: linear-gradient(90deg, #ffd28a, #ffce7a); }
.kpi-meter-bar[data-level="critical"] { background: linear-gradient(90deg, #ff9aa1, #ff8a8a); }

.usage-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}
.usage-col {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.usage-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    padding: 1.05rem 1.1rem 1.15rem;
}
.usage-card h2 {
    margin: 0 0 0.7rem;
    font-size: 1.05rem;
    color: var(--text-primary);
}
.usage-card-hint {
    margin: 0.5rem 0 0;
    color: var(--text-tertiary);
    font-size: 0.78rem;
    line-height: 1.35;
}
.usage-muted {
    color: var(--text-tertiary);
    font-style: italic;
}

.usage-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}
.usage-table thead th {
    text-align: left;
    color: var(--text-tertiary);
    font-weight: 500;
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.3rem 0.4rem;
    border-bottom: 1px solid var(--glass-border);
}
.usage-table tbody td {
    padding: 0.45rem 0.4rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
}
.usage-table tbody tr:last-child td { border-bottom: none; }
.usage-table code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.85em;
    background: rgba(0, 0, 0, 0.28);
    padding: 0.05rem 0.4rem;
    border-radius: 5px;
}

/* Two-line user cell: human-friendly displayName/username on top,
   small monospace uid prefix beneath. The .user-row-rank pill on the
   right anchors the ordinal so the eye can scan the leaderboard
   without counting rows. */
.user-row-name {
    color: var(--text-primary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.45rem;
}
.user-row-rank {
    color: var(--text-tertiary);
    font-size: 0.72rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.06);
    padding: 0.05rem 0.4rem;
    border-radius: 999px;
}
.user-row-uid {
    display: block;
    color: var(--text-tertiary);
    font-size: 0.72rem;
    margin-top: 0.15rem;
    background: none;
    padding: 0;
}

.usage-pill {
    display: inline-block;
    padding: 0.18rem 0.55rem;
    border-radius: 999px;
    font-size: 0.74rem;
    font-weight: 600;
    border: 1px solid;
}
.pill-light   { background: rgba(126, 168, 255, 0.12); color: #a3bdff; border-color: rgba(126, 168, 255, 0.32); }
.pill-heavy   { background: rgba(255, 139, 208, 0.14); color: #ffb1dc; border-color: rgba(255, 139, 208, 0.38); }
.pill-failed  { background: rgba(255, 120, 130, 0.16); color: #ff9aa1; border-color: rgba(255, 120, 130, 0.38); }
.pill-image   { background: rgba(80, 200, 120, 0.16); color: #8fe6c0; border-color: rgba(80, 200, 120, 0.38); }
.pill-image-alt { background: rgba(255, 196, 75, 0.14); color: #ffce7a; border-color: rgba(255, 196, 75, 0.32); }

.usage-stack {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}
.decision-row {
    display: grid;
    grid-template-columns: 100px 1fr 110px;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.84rem;
}
.decision-label {
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 0.74rem;
    color: var(--text-secondary);
    font-weight: 600;
}
.decision-bar {
    height: 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    overflow: hidden;
}
.decision-bar-fill {
    display: block;
    height: 100%;
    border-radius: 999px;
    transition: width 0.3s ease;
}
.decision-idiomatic .decision-bar-fill { background: linear-gradient(90deg, #8fe6c0, #6dd28a); }
.decision-twist     .decision-bar-fill { background: linear-gradient(90deg, #ffd28a, #ffce7a); }
.decision-literal   .decision-bar-fill { background: linear-gradient(90deg, #c8c8e0, #a8a8d0); }
.decision-unknown   .decision-bar-fill { background: linear-gradient(90deg, #ff9aa1, #ff8a8a); }
.decision-count {
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
    text-align: right;
}

.usage-feedback {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.fb-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 500;
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
}
.fb-chip span { font-weight: 700; color: var(--text-primary); }
.fb-up        { background: rgba(80, 200, 120, 0.12); color: #8fe6c0; border-color: rgba(80, 200, 120, 0.32); }
.fb-down      { background: rgba(255, 120, 130, 0.12); color: #ff9aa1; border-color: rgba(255, 120, 130, 0.32); }
.fb-good      { background: rgba(80, 200, 120, 0.10); }
.fb-improve   { background: rgba(255, 170, 70, 0.10); }
.fb-bad       { background: rgba(255, 120, 130, 0.10); }
.fb-unsafe    { background: rgba(255, 70, 70, 0.10); }
.fb-funny     { background: rgba(255, 196, 75, 0.10); }
.fb-training  { background: rgba(126, 138, 255, 0.10); }
.fb-unreviewed { background: rgba(255, 255, 255, 0.04); }

.usage-meta {
    color: var(--text-tertiary);
    font-size: 0.78rem;
    text-align: center;
    margin: 0.5rem 0 0;
}

/* ── Guess feature section ─────────────────────────────────────────────── */
.usage-card-guess {
    margin: 1.5rem 0 1rem;
    background: linear-gradient(180deg, rgba(126, 168, 255, 0.08), rgba(255, 139, 208, 0.04));
    border-color: rgba(126, 168, 255, 0.32);
}
.usage-card-guess .section-heading-row {
    margin-bottom: 1rem;
}
.guess-kpis {
    margin-bottom: 1.25rem;
}
/* Cards nested inside the guess section read as flat sub-blocks, not a
   distracting card-in-a-card. */
.usage-card-guess .usage-columns {
    margin-bottom: 0;
}
.usage-card-nested {
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    padding: 0.9rem 1rem 1rem;
}