/* ============================================================
   IELTS Speaking Coach — styles
   Self-scoped under .isc-wrap to avoid collisions with theme
   ============================================================ */

.isc-wrap, .isc-wrap *, .isc-wrap *::before, .isc-wrap *::after {
    box-sizing: border-box;
}

.isc-wrap {
    --isc-bg:        #ffffff;
    --isc-surface:   #f8fafc;
    --isc-border:    #e2e8f0;
    --isc-border-2:  #cbd5e1;
    --isc-text:      #0f172a;
    --isc-text-2:    #475569;
    --isc-text-3:    #94a3b8;
    --isc-good:      #16a34a;
    --isc-warn:      #eab308;
    --isc-bad:       #ef4444;
    --isc-radius:    14px;
    --isc-radius-sm: 10px;
    --isc-shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
    --isc-shadow:    0 4px 14px rgba(15, 23, 42, .08);

    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--isc-text);
    line-height: 1.55;
    max-width: 880px;
    margin: 24px auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.isc-inner {
    background: var(--isc-bg);
    border: 1px solid var(--isc-border);
    border-radius: var(--isc-radius);
    overflow: hidden;
    box-shadow: var(--isc-shadow);
}

/* ---------- Header ---------- */

.isc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--isc-accent-dim), transparent 70%);
    border-bottom: 1px solid var(--isc-border);
}
.isc-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}
.isc-brand-icon {
    width: 44px; height: 44px;
    border-radius: 12px;
    display: grid; place-items: center;
    color: #fff;
    background: var(--isc-accent);
    box-shadow: 0 6px 16px var(--isc-accent-mid);
}
.isc-title {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--isc-text);
}
.isc-subtitle {
    margin: 2px 0 0;
    color: var(--isc-text-2);
    font-size: 13px;
}
.isc-history-btn {
    appearance: none;
    border: 1px solid var(--isc-border);
    background: #fff;
    color: var(--isc-text-2);
    border-radius: 999px;
    padding: 8px 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: all .15s ease;
}
.isc-history-btn:hover {
    border-color: var(--isc-accent);
    color: var(--isc-accent);
}
.isc-history-count {
    background: var(--isc-accent);
    color: #fff;
    font-size: 11px;
    padding: 1px 7px;
    border-radius: 999px;
    min-width: 18px;
    text-align: center;
}

/* ---------- Part tabs ---------- */

.isc-part-tabs {
    display: flex;
    gap: 6px;
    padding: 14px 14px 0;
    background: var(--isc-bg);
}
.isc-tab {
    flex: 1;
    appearance: none;
    border: 1px solid var(--isc-border);
    background: var(--isc-surface);
    border-radius: var(--isc-radius-sm);
    padding: 12px 14px;
    cursor: pointer;
    text-align: left;
    transition: all .15s ease;
    color: var(--isc-text-2);
}
.isc-tab:hover {
    border-color: var(--isc-accent-mid);
}
.isc-tab.is-active {
    border-color: var(--isc-accent);
    background: var(--isc-accent-dim);
    color: var(--isc-text);
    box-shadow: 0 2px 8px var(--isc-accent-mid);
}
.isc-tab-label {
    display: block;
    font-weight: 700;
    font-size: 14px;
}
.isc-tab-sub {
    display: block;
    font-size: 12px;
    color: var(--isc-text-2);
    margin-top: 2px;
}
.isc-tab.is-active .isc-tab-sub {
    color: var(--isc-accent);
}

/* ---------- Cards (steps) ---------- */

.isc-card {
    margin: 16px;
    padding: 20px;
    border: 1px solid var(--isc-border);
    border-radius: var(--isc-radius);
    background: var(--isc-bg);
}

.isc-step-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.isc-step-pill {
    background: var(--isc-accent);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 4px 10px;
    border-radius: 999px;
    text-transform: uppercase;
}
.isc-step-text {
    font-weight: 600;
    color: var(--isc-text);
    font-size: 15px;
}

/* ---------- Question card ---------- */

.isc-question-empty {
    text-align: center;
    padding: 12px 8px 4px;
}
.isc-empty-icon {
    color: var(--isc-accent);
    margin-bottom: 8px;
    opacity: 0.7;
}
.isc-question-empty p {
    margin: 0 0 16px;
    color: var(--isc-text-2);
}

.isc-q-controls {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}
.isc-topic-input {
    flex: 1;
    min-width: 200px;
    appearance: none;
    border: 1px solid var(--isc-border);
    border-radius: var(--isc-radius-sm);
    padding: 10px 14px;
    font-size: 14px;
    color: var(--isc-text);
    background: #fff;
    font-family: inherit;
    transition: border-color .15s ease;
}
.isc-topic-input:focus {
    outline: none;
    border-color: var(--isc-accent);
    box-shadow: 0 0 0 3px var(--isc-accent-dim);
}

.isc-question-active {
    background: var(--isc-surface);
    border-radius: var(--isc-radius-sm);
    padding: 18px 20px;
    border: 1px solid var(--isc-border);
}
.isc-q-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.isc-q-part-badge {
    font-size: 11px;
    font-weight: 700;
    background: var(--isc-accent);
    color: #fff;
    padding: 3px 10px;
    border-radius: 999px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
.isc-q-topic {
    font-size: 13px;
    color: var(--isc-text-2);
    font-weight: 500;
}
.isc-q-meta .isc-btn-text {
    margin-left: auto;
}
.isc-q-text {
    font-size: 17px;
    font-weight: 500;
    color: var(--isc-text);
    line-height: 1.5;
}
.isc-q-text strong {
    font-weight: 700;
}

.isc-cue-bullets {
    margin-top: 14px;
    padding: 14px 16px;
    background: #fff;
    border: 1px dashed var(--isc-border-2);
    border-radius: var(--isc-radius-sm);
}
.isc-cue-prompt {
    font-size: 13px;
    color: var(--isc-text-2);
    font-weight: 600;
    margin-bottom: 8px;
}
.isc-cue-bullets ul {
    margin: 0;
    padding-left: 20px;
    color: var(--isc-text);
}
.isc-cue-bullets li {
    margin-bottom: 4px;
    font-size: 14px;
}

.isc-discourse-tag {
    display: inline-block;
    margin-top: 10px;
    background: var(--isc-accent-dim);
    color: var(--isc-accent);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
}

.isc-q-tip {
    margin-top: 12px;
    color: var(--isc-text-2);
    font-size: 13px;
    font-style: italic;
}
.isc-q-tip:empty { display: none; }

/* ---------- Buttons ---------- */

.isc-btn-primary,
.isc-btn-ghost {
    appearance: none;
    border-radius: var(--isc-radius-sm);
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    transition: all .15s ease;
    font-family: inherit;
}
.isc-btn-primary {
    background: var(--isc-accent);
    color: #fff;
    border: 1px solid var(--isc-accent);
    box-shadow: 0 2px 8px var(--isc-accent-mid);
}
.isc-btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px var(--isc-accent-mid);
    filter: brightness(1.05);
}
.isc-btn-primary:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    box-shadow: none;
}
.isc-btn-large {
    padding: 13px 24px;
    font-size: 15px;
}
.isc-btn-ghost {
    background: #fff;
    color: var(--isc-text-2);
    border: 1px solid var(--isc-border);
}
.isc-btn-ghost:hover {
    border-color: var(--isc-accent);
    color: var(--isc-accent);
}
.isc-btn-text {
    appearance: none;
    background: none;
    border: none;
    color: var(--isc-text-2);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    padding: 4px 8px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: all .15s ease;
    font-family: inherit;
}
.isc-btn-text:hover {
    background: var(--isc-accent-dim);
    color: var(--isc-accent);
}

/* ---------- Prep phase ---------- */

.isc-prep-phase {
    background: linear-gradient(135deg, #fef3c7, #fff7d6);
    border: 1px solid #fcd34d;
    border-radius: var(--isc-radius-sm);
    padding: 18px 20px;
}
.isc-prep-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}
.isc-prep-label {
    font-weight: 600;
    color: #78350f;
    font-size: 14px;
}
.isc-prep-timer {
    font-family: ui-monospace, "SF Mono", Menlo, Monaco, monospace;
    font-size: 24px;
    font-weight: 700;
    color: #b45309;
    background: #fff;
    padding: 4px 14px;
    border-radius: 8px;
    border: 1px solid #fcd34d;
}
.isc-prep-timer.is-warning {
    color: var(--isc-bad);
    animation: isc-pulse 1s infinite;
}
@keyframes isc-pulse {
    0%, 100% { transform: scale(1); }
    50%      { transform: scale(1.05); }
}
.isc-prep-notes {
    width: 100%;
    border: 1px solid #fcd34d;
    background: #fff;
    border-radius: var(--isc-radius-sm);
    padding: 12px 14px;
    font-size: 14px;
    color: var(--isc-text);
    resize: vertical;
    margin-bottom: 12px;
    font-family: inherit;
}
.isc-prep-notes:focus {
    outline: none;
    border-color: #f59e0b;
    box-shadow: 0 0 0 3px rgba(251, 191, 36, .25);
}

/* ---------- Recording stage ---------- */

.isc-record-stage {
    background: var(--isc-surface);
    border: 1px solid var(--isc-border);
    border-radius: var(--isc-radius-sm);
    padding: 18px;
}
.isc-waveform {
    height: 64px;
    display: grid;
    place-items: center;
    position: relative;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--isc-accent-dim), transparent);
    margin-bottom: 14px;
    overflow: hidden;
}
.isc-wave-bars {
    display: flex;
    align-items: center;
    gap: 3px;
    height: 100%;
    opacity: 0;
    transition: opacity .3s ease;
}
.isc-waveform.is-active .isc-wave-bars {
    opacity: 1;
}
.isc-bar {
    width: 4px;
    height: 12px;
    background: var(--isc-accent);
    border-radius: 4px;
    animation: isc-wave 0.9s ease-in-out infinite alternate;
}
@keyframes isc-wave {
    from { height: 6px; }
    to   { height: 36px; }
}
.isc-wave-idle {
    position: absolute;
    color: var(--isc-text-2);
    font-size: 13px;
    font-style: italic;
}
.isc-waveform.is-active .isc-wave-idle {
    display: none;
}

.isc-record-controls {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.isc-record-btn {
    appearance: none;
    border: none;
    background: var(--isc-bad);
    color: #fff;
    padding: 11px 22px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 9px;
    transition: all .15s ease;
    box-shadow: 0 2px 10px rgba(239, 68, 68, .35);
    font-family: inherit;
}
.isc-record-btn:hover {
    transform: translateY(-1px);
    filter: brightness(1.05);
}
.isc-rec-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #fff;
    display: inline-block;
}
.isc-record-btn.is-recording {
    background: #1e293b;
    box-shadow: 0 2px 10px rgba(30, 41, 59, .35);
}
.isc-record-btn.is-recording .isc-rec-dot {
    background: var(--isc-bad);
    animation: isc-blink 1s infinite;
}
@keyframes isc-blink {
    0%, 50%   { opacity: 1; }
    51%, 100% { opacity: 0.2; }
}

.isc-timer-group {
    display: flex;
    flex-direction: column;
}
.isc-timer {
    font-family: ui-monospace, "SF Mono", Menlo, Monaco, monospace;
    font-size: 22px;
    font-weight: 700;
    color: var(--isc-text);
    line-height: 1;
}
.isc-timer-target {
    font-size: 11px;
    color: var(--isc-text-3);
    margin-top: 3px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ---------- Transcript ---------- */

.isc-transcript-block {
    margin-top: 16px;
    padding: 14px 16px;
    background: #fff;
    border: 1px solid var(--isc-border);
    border-radius: var(--isc-radius-sm);
}
.isc-transcript-head {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 12px;
}
.isc-transcript-head > span:first-child {
    font-weight: 600;
    color: var(--isc-text-2);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.isc-edit-hint {
    color: var(--isc-text-3);
    font-style: italic;
}
.isc-transcript {
    min-height: 50px;
    padding: 12px;
    border: 1px dashed var(--isc-border);
    border-radius: 8px;
    background: var(--isc-surface);
    color: var(--isc-text);
    font-size: 15px;
    line-height: 1.55;
    outline: none;
    transition: all .15s ease;
}
.isc-transcript[data-empty="true"] {
    color: var(--isc-text-3);
    font-style: italic;
}
.isc-transcript[contenteditable="true"]:focus {
    border-style: solid;
    border-color: var(--isc-accent);
    background: #fff;
    box-shadow: 0 0 0 3px var(--isc-accent-dim);
}
.isc-interim {
    color: var(--isc-text-3);
    font-style: italic;
}

/* ---------- Analyse row + spinner + error ---------- */

.isc-analyse-row {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 16px;
    flex-wrap: wrap;
}
.isc-spinner {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: var(--isc-text-2);
    font-size: 13px;
}
.isc-spin-ring {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--isc-border-2);
    border-top-color: var(--isc-accent);
    animation: isc-spin 0.8s linear infinite;
}
.isc-spin-ring-sm {
    width: 12px;
    height: 12px;
    border-width: 2px;
}
@keyframes isc-spin {
    to { transform: rotate(360deg); }
}
.isc-error {
    margin-top: 12px;
    padding: 11px 14px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    border-radius: var(--isc-radius-sm);
    font-size: 13px;
}

/* ---------- Results: score hero ---------- */

.isc-score-hero {
    display: grid;
    grid-template-columns: minmax(260px, 1fr) minmax(0, 1fr);
    gap: 20px;
    padding: 22px;
    background: linear-gradient(135deg, var(--isc-accent-dim), var(--isc-surface));
    border-radius: var(--isc-radius);
    border: 1px solid var(--isc-border);
    margin-bottom: 18px;
}
.isc-score-main {
    display: flex;
    align-items: center;
    gap: 18px;
}
.isc-band-circle {
    position: relative;
    width: 110px;
    height: 110px;
    flex-shrink: 0;
}
.isc-band-circle svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}
.isc-ring-bg {
    fill: none;
    stroke: rgba(0, 0, 0, .08);
    stroke-width: 8;
}
.isc-ring-fill {
    fill: none;
    stroke: var(--isc-accent);
    stroke-width: 8;
    stroke-linecap: round;
}
.isc-band-inner {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
}
.isc-band-num {
    font-size: 32px;
    font-weight: 800;
    color: var(--isc-text);
    line-height: 1;
}
.isc-band-label {
    font-size: 11px;
    color: var(--isc-text-2);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 2px;
    font-weight: 600;
}
.isc-summary-text {
    font-size: 14px;
    color: var(--isc-text);
    line-height: 1.5;
}

.isc-criteria-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.isc-crit-mini {
    background: #fff;
    border: 1px solid var(--isc-border);
    border-radius: var(--isc-radius-sm);
    padding: 12px 14px;
    text-align: center;
    transition: border-color .15s ease;
}
.isc-crit-mini-band {
    font-size: 22px;
    font-weight: 800;
    color: var(--isc-text);
    line-height: 1.2;
}
.isc-crit-mini-name {
    font-size: 11px;
    color: var(--isc-text-2);
    margin-top: 2px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-weight: 600;
}

/* ---------- Speech metrics ---------- */

.isc-metrics-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 18px;
}
.isc-metric {
    background: var(--isc-surface);
    border: 1px solid var(--isc-border);
    border-radius: var(--isc-radius-sm);
    padding: 12px;
    text-align: center;
}
.isc-metric-num {
    font-size: 22px;
    font-weight: 700;
    color: var(--isc-accent);
    line-height: 1.2;
}
.isc-metric-label {
    font-size: 11px;
    color: var(--isc-text-2);
    margin-top: 3px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-weight: 600;
}

/* ---------- Detailed criteria ---------- */

.isc-criteria-detail {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 18px;
}
.isc-crit-detail {
    background: #fff;
    border: 1px solid var(--isc-border);
    border-left: 4px solid var(--isc-accent);
    border-radius: var(--isc-radius-sm);
    padding: 14px 16px;
}
.isc-crit-detail-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 8px;
}
.isc-crit-detail-title {
    font-weight: 700;
    color: var(--isc-text);
    font-size: 15px;
}
.isc-crit-detail-band {
    font-size: 18px;
    font-weight: 800;
}

.isc-crit-row {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    margin-top: 8px;
    font-size: 14px;
    line-height: 1.5;
}
.isc-crit-tag {
    flex-shrink: 0;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 6px;
    margin-top: 1px;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.isc-crit-good .isc-crit-tag { background: #dcfce7; color: #15803d; }
.isc-crit-bad  .isc-crit-tag { background: #fef9c3; color: #854d0e; }
.isc-crit-action .isc-crit-tag { background: var(--isc-accent-dim); color: var(--isc-accent); }

/* ---------- Block sections ---------- */

.isc-section-block {
    background: var(--isc-surface);
    border: 1px solid var(--isc-border);
    border-radius: var(--isc-radius);
    padding: 18px 20px;
    margin-bottom: 16px;
}
.isc-block-title {
    margin: 0 0 14px;
    font-size: 15px;
    font-weight: 700;
    color: var(--isc-text);
    display: flex;
    align-items: center;
    gap: 8px;
}
.isc-block-title svg { color: var(--isc-accent); }

/* Vocab */
.isc-vocab-list { display: flex; flex-direction: column; gap: 12px; }
.isc-vocab-item {
    background: #fff;
    border: 1px solid var(--isc-border);
    border-radius: var(--isc-radius-sm);
    padding: 12px 14px;
}
.isc-vocab-from { font-size: 13px; color: var(--isc-text-2); }
.isc-vocab-from em { color: var(--isc-bad); font-style: normal; font-weight: 600; }
.isc-vocab-to { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 13px; color: var(--isc-text-2); }
.isc-vocab-pill {
    background: var(--isc-accent-dim);
    color: var(--isc-accent);
    padding: 4px 10px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 13px;
}
.isc-vocab-ex {
    margin-top: 8px;
    font-size: 13px;
    font-style: italic;
    color: var(--isc-text);
    border-top: 1px dashed var(--isc-border);
    padding-top: 8px;
}

/* Grammar */
.isc-grammar-list { display: flex; flex-direction: column; gap: 12px; }
.isc-grammar-item {
    background: #fff;
    border: 1px solid var(--isc-border);
    border-radius: var(--isc-radius-sm);
    padding: 12px 14px;
}
.isc-grammar-obs { font-size: 13px; color: var(--isc-text-2); margin-bottom: 4px; }
.isc-grammar-add { font-size: 14px; color: var(--isc-text); }
.isc-grammar-add strong { color: var(--isc-accent); }
.isc-grammar-ex {
    margin-top: 8px;
    font-size: 13px;
    font-style: italic;
    color: var(--isc-text);
    border-top: 1px dashed var(--isc-border);
    padding-top: 8px;
}

/* Model answer */
.isc-model-answer {
    background: linear-gradient(135deg, #f0fdf4, #ecfeff);
    border-color: #bbf7d0;
}
.isc-model-answer .isc-block-title svg { color: #16a34a; }
.isc-model-text {
    margin: 0;
    font-size: 14.5px;
    line-height: 1.65;
    color: var(--isc-text);
    white-space: pre-wrap;
}

/* Next focus */
.isc-next-focus {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    background: var(--isc-accent-dim);
    border: 1px solid var(--isc-accent-mid);
    padding: 14px 18px;
    border-radius: var(--isc-radius);
    margin-bottom: 16px;
}
.isc-next-icon { font-size: 24px; line-height: 1.2; }
.isc-next-title { font-weight: 700; color: var(--isc-text); font-size: 14px; margin-bottom: 2px; }
.isc-next-text  { color: var(--isc-text); font-size: 14px; }

/* Results actions */
.isc-results-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    padding-top: 6px;
}

/* ---------- History drawer ---------- */

.isc-history-drawer {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: 420px;
    max-width: 100%;
    background: #fff;
    border-left: 1px solid var(--isc-border);
    box-shadow: -8px 0 30px rgba(15, 23, 42, .12);
    z-index: 9999;
    overflow-y: auto;
    animation: isc-slide-in .25s ease;
}
@keyframes isc-slide-in {
    from { transform: translateX(100%); }
    to   { transform: translateX(0); }
}
.isc-history-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    border-bottom: 1px solid var(--isc-border);
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 1;
}
.isc-history-head h3 { margin: 0; font-size: 17px; font-weight: 700; }

.isc-history-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    padding: 16px 18px;
    border-bottom: 1px solid var(--isc-border);
}
.isc-stat-card {
    background: var(--isc-surface);
    padding: 10px;
    border-radius: var(--isc-radius-sm);
    text-align: center;
}
.isc-stat-num {
    font-size: 18px;
    font-weight: 800;
    color: var(--isc-text);
    line-height: 1.2;
}
.isc-stat-num.is-up   { color: var(--isc-good); }
.isc-stat-num.is-down { color: var(--isc-bad); }
.isc-stat-label {
    font-size: 10px;
    color: var(--isc-text-2);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-weight: 600;
    margin-top: 2px;
}
.isc-history-empty {
    grid-column: 1 / -1;
    color: var(--isc-text-2);
    text-align: center;
    padding: 14px;
    font-size: 13px;
}

.isc-history-list { padding: 12px 18px; }
.isc-hist-item {
    background: var(--isc-surface);
    border: 1px solid var(--isc-border);
    border-radius: var(--isc-radius-sm);
    padding: 12px 14px;
    margin-bottom: 10px;
}
.isc-hist-head { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.isc-hist-band { font-size: 22px; font-weight: 800; line-height: 1; min-width: 36px; }
.isc-hist-meta { flex: 1; min-width: 0; }
.isc-hist-topic { font-weight: 600; font-size: 13px; color: var(--isc-text); }
.isc-hist-when  { font-size: 11px; color: var(--isc-text-3); margin-top: 2px; }
.isc-hist-q {
    font-size: 12px;
    color: var(--isc-text-2);
    font-style: italic;
    margin-bottom: 8px;
    line-height: 1.4;
}
.isc-hist-crits { display: flex; gap: 6px; flex-wrap: wrap; }
.isc-hist-crit {
    background: #fff;
    border: 1px solid var(--isc-border);
    border-radius: 6px;
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 700;
    color: var(--isc-text);
}
.isc-hist-crit em {
    font-style: normal;
    color: var(--isc-text-3);
    font-size: 10px;
    margin-right: 4px;
}
.isc-history-foot {
    padding: 12px 18px;
    border-top: 1px solid var(--isc-border);
    text-align: center;
}
.isc-history-clear { color: var(--isc-bad); }
.isc-history-clear:hover { background: #fef2f2; color: var(--isc-bad); }

/* ---------- Mobile ---------- */

@media (max-width: 720px) {
    .isc-wrap { margin: 12px; }
    .isc-header { padding: 16px; }
    .isc-card { margin: 12px; padding: 16px; }
    .isc-score-hero { grid-template-columns: 1fr; padding: 18px; }
    .isc-criteria-grid { grid-template-columns: 1fr 1fr; }
    .isc-metrics-row { grid-template-columns: 1fr 1fr; }
    .isc-tab-sub { display: none; }
    .isc-tab { padding: 10px 8px; text-align: center; }
    .isc-history-drawer { width: 100%; }
    .isc-history-stats { grid-template-columns: 1fr 1fr; }
    .isc-band-circle { width: 92px; height: 92px; }
    .isc-band-num { font-size: 26px; }
    .isc-q-text { font-size: 16px; }
    .isc-results-actions { flex-direction: column; }
    .isc-results-actions .isc-btn-primary,
    .isc-results-actions .isc-btn-ghost { width: 100%; justify-content: center; }
}

/* hidden helper */
.isc-wrap [hidden] { display: none !important; }