.rp2 {
    max-width: var(--page-w, 1180px);
    margin: 0 auto;
    padding: var(--space-4) var(--space-4) var(--space-12);
}

.rp2-bar {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: var(--space-4);
    align-items: center;
    margin-bottom: var(--space-5);
    padding: var(--space-5);
    background: linear-gradient(135deg, var(--color-primary-soft) 0%, var(--color-accent-soft) 100%);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.rp2-close {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid color-mix(in srgb, var(--color-primary) 18%, var(--color-border));
    background: var(--color-surface);
    color: var(--color-muted);
    text-decoration: none;
    font-size: 16px;
    transition: all var(--dur-fast) var(--ease);
}

.rp2-close:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.rp2-bar__title {
    min-width: 0;
}

.rp2-bar__eyebrow {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 7px;
    font-size: 12.5px;
    font-weight: var(--fw-semibold);
    color: var(--color-muted);
}

.rp2-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 11.5px;
    font-weight: var(--fw-bold);
}

.rp2-bar__title strong {
    display: block;
    font-size: clamp(21px, 2.6vw, 28px);
    line-height: 1.2;
    font-weight: var(--fw-extrabold);
    color: var(--color-ink);
}

.rp2-progress {
    margin-top: 13px;
    max-width: 520px;
}

.rp2-progress__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 7px;
    color: var(--color-text);
    font-size: 12.5px;
    font-weight: var(--fw-semibold);
}

.rp2-save {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--color-muted);
    white-space: nowrap;
}

.rp2-save.is-saving { color: var(--color-primary); }
.rp2-save.is-ok { color: var(--color-secondary-deep, var(--color-secondary)); }
.rp2-save.is-error { color: var(--color-warning-deep, var(--color-warning)); }

.rp2-progress__track {
    height: 9px;
    overflow: hidden;
    border-radius: var(--radius-pill);
    border: 1px solid color-mix(in srgb, var(--color-primary) 15%, transparent);
    background: var(--color-surface);
}

.rp2-progress__fill {
    height: 100%;
    width: 0;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transition: width var(--dur-base) var(--ease);
}

.rp2-modes {
    display: inline-flex;
    gap: 4px;
    padding: 4px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.rp2-mode {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    border: none;
    background: transparent;
    cursor: pointer;
    font: inherit;
    font-size: 13px;
    font-weight: var(--fw-bold);
    color: var(--color-muted);
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    transition: all var(--dur-fast) var(--ease);
}

.rp2-mode:hover { color: var(--color-primary); }
.rp2-mode.is-on { background: var(--color-primary); color: var(--color-on-dark); }

.rp2-grid {
    display: grid;
    grid-template-columns: 244px minmax(0, 1fr);
    gap: var(--space-5);
    align-items: start;
}

.rp2-side {
    position: sticky;
    top: 12px;
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.rp2-side__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 12px;
    font-weight: var(--fw-extrabold);
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--color-muted);
}

.rp2-side__head span {
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    background: var(--color-primary-soft);
    color: var(--color-primary);
    letter-spacing: 0;
    text-transform: none;
}

.rp2-nav {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
    max-height: 420px;
    overflow-y: auto;
    scrollbar-width: thin;
}

.rp2-chip {
    position: relative;
    aspect-ratio: 1;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-muted);
    font: inherit;
    font-size: 12.5px;
    font-weight: var(--fw-bold);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--dur-fast) var(--ease);
}

.rp2-chip:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.rp2-chip.is-done {
    background: var(--color-secondary-soft);
    border-color: transparent;
    color: var(--color-secondary-deep, var(--color-secondary));
}

.rp2-chip.is-wrong {
    background: var(--color-warning-soft);
    border-color: transparent;
    color: var(--color-warning-deep, var(--color-warning));
}

.rp2-chip.is-cur {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-on-dark);
    box-shadow: 0 8px 18px color-mix(in srgb, var(--color-primary) 22%, transparent);
}

.rp2-card,
.rp2-panel,
.rp2-empty {
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.rp2-card {
    padding: var(--space-6);
}

.rp2-card__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: var(--space-5);
    flex-wrap: wrap;
}

.rp2-stepper {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.rp2-stepper button,
.rp2-ctrl,
.rp2-eye,
.rp2-mic {
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-muted);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--dur-fast) var(--ease);
}

.rp2-stepper button {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-md);
    font-size: 12px;
}

.rp2-stepper button:hover,
.rp2-ctrl:hover,
.rp2-eye:hover,
.rp2-mic:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.rp2-counter {
    font-size: 17px;
    font-weight: var(--fw-extrabold);
    color: var(--color-ink);
}

.rp2-wc {
    font-size: 12.5px;
    font-weight: var(--fw-bold);
    color: var(--color-muted);
    padding: 4px 10px;
    background: var(--color-soft);
    border-radius: var(--radius-pill);
}

.rp2-eh {
    display: inline-flex;
    padding: 3px;
    gap: 3px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    background: var(--color-soft);
}

.rp2-eh__btn {
    border: none;
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--color-muted);
    font: inherit;
    font-size: 11.5px;
    font-weight: var(--fw-extrabold);
    letter-spacing: .04em;
    padding: 7px 13px;
    cursor: pointer;
    transition: all var(--dur-fast) var(--ease);
}

.rp2-eh__btn.is-on {
    background: var(--color-surface);
    color: var(--color-primary-deep, var(--color-primary));
    box-shadow: var(--shadow-sm);
}

.rp2-player {
    display: grid;
    grid-template-columns: auto auto minmax(90px, 1fr) auto auto auto;
    align-items: center;
    gap: 12px;
    margin-bottom: var(--space-5);
    padding: 12px;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-xl);
    background: var(--color-bg);
}

.rp2-play {
    flex-shrink: 0;
    width: 54px;
    height: 54px;
    border-radius: 50%;
    border: none;
    background: var(--color-primary);
    color: var(--color-on-dark);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all var(--dur-fast) var(--ease);
}

.rp2-play:hover {
    transform: translateY(-1px) scale(1.03);
    box-shadow: 0 12px 24px color-mix(in srgb, var(--color-primary) 25%, transparent);
}

.rp2-ctrl {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    font-size: 13px;
}

.rp2-ctrl.is-on {
    background: var(--color-primary-soft);
    border-color: var(--color-primary);
    color: var(--color-primary-deep, var(--color-primary));
}

.rp2-rate {
    width: auto;
    min-width: 48px;
    padding: 0 12px;
    border-radius: var(--radius-pill);
    font-size: 12.5px;
    font-weight: var(--fw-bold);
    font-variant-numeric: tabular-nums;
}

.rp2-track {
    min-width: 70px;
    height: 8px;
    border-radius: var(--radius-pill);
    background: var(--color-line);
    cursor: pointer;
    overflow: hidden;
}

.rp2-fill {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-pill);
}

.rp2-time {
    flex-shrink: 0;
    font-size: 12.5px;
    color: var(--color-muted);
    font-variant-numeric: tabular-nums;
    font-weight: var(--fw-semibold);
}

.rp2-input {
    width: 100%;
    min-height: 112px;
    resize: vertical;
    font: inherit;
    font-size: 16px;
    line-height: 1.55;
    padding: 15px 48px 15px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg);
    color: var(--color-ink);
}

.rp2-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus);
    background: var(--color-surface);
}

.rp2-inputwrap {
    position: relative;
    margin-bottom: var(--space-4);
}

.rp2-mic {
    position: absolute;
    right: 12px;
    bottom: 12px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 14px;
}

.rp2-mic.is-rec,
.rp2-rec.is-rec {
    background: var(--color-warning);
    border-color: var(--color-warning);
    color: var(--color-on-dark);
    animation: rp2-pulse 1.1s infinite;
}

@keyframes rp2-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .62; }
}

.rp2-blanks {
    font-size: 19px;
    line-height: 2.6;
    margin-bottom: var(--space-4);
}

.rp2-blank {
    border: none;
    border-bottom: 2px solid var(--color-border);
    background: transparent;
    font: inherit;
    font-size: 18px;
    text-align: center;
    min-width: 2.4ch;
    padding: 2px 4px;
    color: var(--color-ink);
    transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.rp2-blank:focus {
    outline: none;
    border-bottom-color: var(--color-primary);
}

.rp2-blank--ok {
    border-bottom-color: var(--color-secondary);
    color: var(--color-secondary-deep, var(--color-secondary));
}

.rp2-blank--bad {
    border-bottom-color: var(--color-warning);
    color: var(--color-warning-deep, var(--color-warning));
}

.rp2-punct {
    font-size: 18px;
    color: var(--color-ink);
    margin: 0 1px;
}

.rp2-actionbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
}

.rp2-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.rp2-tip {
    font-size: 13px;
    color: var(--color-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.rp2-tip kbd {
    font-family: var(--font-mono, monospace);
    font-size: 11.5px;
    background: var(--color-soft);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 2px 7px;
    color: var(--color-text);
}

.rp2-tip i {
    color: var(--color-accent);
}

.rp2-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    cursor: pointer;
    font: inherit;
    font-size: 14px;
    font-weight: var(--fw-bold);
    border-radius: var(--radius-md);
    padding: 10px 20px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    transition: all var(--dur-fast) var(--ease);
}

.rp2-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.rp2-btn--primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-on-dark);
}

.rp2-btn--primary:hover {
    color: var(--color-on-dark);
    filter: brightness(.97);
}

.rp2-btn--ghost {
    border-color: transparent;
    background: transparent;
    color: var(--color-muted);
}

.rp2-btn:disabled {
    opacity: .58;
    cursor: not-allowed;
}

.rp2-sentence {
    font-size: 24px;
    line-height: 1.5;
    color: var(--color-ink);
    font-weight: var(--fw-semibold);
    margin: 0 0 var(--space-4);
}

.rp2-result {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-line);
    display: none;
}

.rp2-result.is-show {
    display: block;
}

.rp2-score {
    display: inline-flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 8px;
}

.rp2-score__num {
    font-size: 28px;
    font-weight: var(--fw-extrabold);
    line-height: 1;
}

.rp2-score__max {
    font-size: 13px;
    color: var(--color-muted);
    font-weight: var(--fw-bold);
}

.rp2-score__lbl {
    margin-left: 8px;
    font-size: 12.5px;
    font-weight: var(--fw-bold);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
}

.rp2-good .rp2-score__num,
.rp2-good .rp2-score__lbl {
    color: var(--color-secondary-deep, var(--color-secondary));
}

.rp2-good .rp2-score__lbl { background: var(--color-secondary-soft); }

.rp2-mid .rp2-score__num,
.rp2-mid .rp2-score__lbl {
    color: var(--color-warning-deep, var(--color-warning));
}

.rp2-mid .rp2-score__lbl { background: var(--color-warning-soft); }

.rp2-low .rp2-score__num,
.rp2-low .rp2-score__lbl {
    color: var(--color-muted);
}

.rp2-low .rp2-score__lbl { background: var(--color-soft); }

.rp2-diff {
    font-size: 16px;
    line-height: 1.7;
}

.rp2-ok {
    color: var(--color-secondary-deep, var(--color-secondary));
    font-weight: var(--fw-semibold);
}

.rp2-miss {
    color: var(--color-warning-deep, var(--color-warning));
    background: var(--color-warning-soft);
    border-radius: 4px;
    padding: 0 3px;
    font-weight: var(--fw-semibold);
}

.rp2-extra {
    color: var(--color-mute2);
    text-decoration: line-through;
}

.rp2-fb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14.5px;
    font-weight: var(--fw-bold);
    margin-bottom: 12px;
}

.rp2-fb--ok {
    color: var(--color-secondary-deep, var(--color-secondary));
}

.rp2-fb--ok i { color: var(--color-secondary); }

.rp2-fb--bad {
    color: var(--color-warning-deep, var(--color-warning));
}

.rp2-fb--bad i { color: var(--color-warning); }

.rp2-nextbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.rp2-hintline {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.rp2-eye {
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    font-size: 14px;
}

.rp2-mask-line {
    font-size: 18px;
    line-height: 1.8;
}

.rp2-mask {
    color: var(--color-mute2);
    letter-spacing: 2px;
    font-family: var(--font-mono, monospace);
}

.rp2-solved-vi {
    display: inline-block;
    margin: 0 0 14px;
    font-size: 16px;
    font-weight: var(--fw-semibold);
    color: var(--color-primary-deep, var(--color-primary));
    background: var(--color-primary-soft);
    padding: 7px 13px;
    border-radius: var(--radius-md);
}

.rp2-panel {
    margin-top: var(--space-4);
    overflow: hidden;
}

.rp2-panel__head {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px var(--space-5);
    background: none;
    border: none;
    cursor: pointer;
    font: inherit;
    font-size: 14.5px;
    font-weight: var(--fw-bold);
    color: var(--color-ink);
}

.rp2-panel__head i {
    color: var(--color-muted);
    transition: transform var(--dur-base) var(--ease);
}

.rp2-panel.is-open .rp2-panel__head i {
    transform: rotate(180deg);
}

.rp2-panel__body {
    display: none;
    padding: 0 var(--space-5) var(--space-5);
}

.rp2-panel.is-open .rp2-panel__body {
    display: block;
}

.rp2-sec {
    padding-top: var(--space-4);
}

.rp2-sec__label {
    font-size: 11.5px;
    font-weight: var(--fw-extrabold);
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--color-muted);
    margin-bottom: 7px;
}

.rp2-sec__label span {
    text-transform: none;
    letter-spacing: 0;
    font-weight: var(--fw-regular);
}

.rp2-en {
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-ink);
    margin: 0 0 10px;
}

.rp2-w {
    text-decoration: underline;
    text-decoration-color: var(--color-border);
    text-underline-offset: 4px;
    cursor: pointer;
    transition: all var(--dur-fast) var(--ease);
}

.rp2-w:hover {
    color: var(--color-primary);
    text-decoration-color: var(--color-primary);
}

.rp2-vi-script {
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-muted);
    margin: 0;
    font-style: italic;
}

.rp2-vocab {
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.rp2-vocab__row {
    display: flex;
    gap: 12px;
    align-items: baseline;
    font-size: 15px;
    line-height: 1.4;
}

.rp2-vocab__w {
    font-weight: var(--fw-bold);
    color: var(--color-primary-deep, var(--color-primary));
    flex: 0 0 130px;
}

.rp2-vocab__vi {
    color: var(--color-muted);
}

.rp2-vocab__empty {
    font-size: 14px;
    color: var(--color-muted);
    font-style: italic;
    margin: 0;
}

.rp2-done {
    margin-top: var(--space-5);
    text-align: center;
}

.rp2-pane[hidden] {
    display: none;
}

.rp2-empty {
    padding: var(--space-6);
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--color-muted);
}

.rp2-empty i {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-lg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-warning-soft);
    color: var(--color-warning);
    flex-shrink: 0;
}

.rm-study-demo-banner {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 12px 16px;
    margin: 0 0 16px;
    background: var(--color-accent-soft);
    border: 1px solid color-mix(in srgb, var(--color-accent) 28%, transparent);
    border-radius: var(--radius-lg);
    font-size: 13.5px;
    line-height: 1.5;
}

.rm-study-demo-banner > i {
    color: var(--color-accent);
    font-size: 18px;
    flex-shrink: 0;
}

.rm-study-demo-banner span {
    flex: 1;
    min-width: 200px;
}

.rm-study-demo-banner strong {
    color: var(--color-ink);
}

.rm-study-demo-banner .btn {
    flex-shrink: 0;
}

@media (max-width: 920px) {
    .rp2-bar {
        grid-template-columns: auto minmax(0, 1fr);
    }

    .rp2-modes {
        grid-column: 1 / -1;
        justify-self: start;
    }

    .rp2-grid {
        grid-template-columns: 1fr;
    }

    .rp2-side {
        position: static;
    }

    .rp2-nav {
        grid-template-columns: repeat(auto-fill, minmax(42px, 1fr));
        max-height: none;
    }
}

@media (max-width: 640px) {
    .rp2 {
        padding: var(--space-3) var(--space-3) calc(var(--space-10) + env(safe-area-inset-bottom));
    }

    .rp2-bar,
    .rp2-card,
    .rp2-empty {
        padding: var(--space-4);
    }

    .rp2-bar {
        align-items: start;
    }

    .rp2-close {
        width: 40px;
        height: 40px;
    }

    .rp2-modes {
        width: 100%;
    }

    .rp2-mode {
        flex: 1;
        justify-content: center;
        padding-inline: 10px;
    }

    .rp2-player {
        grid-template-columns: auto auto 1fr auto;
    }

    .rp2-track {
        grid-column: 1 / -1;
        order: 10;
        min-width: 0;
    }

    .rp2-time {
        justify-self: end;
    }

    .rp2-sentence,
    .rp2-en {
        font-size: 18px;
    }

    .rp2-actionbar,
    .rp2-nextbar {
        align-items: stretch;
        flex-direction: column;
    }

    .rp2-actions,
    .rp2-actions .rp2-btn,
    .rp2-nextbar .rp2-btn,
    .rp2-rec {
        width: 100%;
    }

    .rp2-vocab__row {
        flex-direction: column;
        gap: 2px;
    }

    .rp2-vocab__w {
        flex-basis: auto;
    }
}

/* Shadowing — phản hồi phát âm chi tiết (server heuristic VN) */
.rp2-submetrics { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.rp2-submetrics span {
    font-size: 12px; font-weight: 700; color: var(--color-muted);
    background: var(--color-soft); border: 1px solid var(--color-border);
    padding: 3px 9px; border-radius: 999px;
}
.rp2-errs { margin-top: 12px; }
.rp2-errs__h {
    font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em;
    color: var(--color-warning); margin-bottom: 6px;
}
.rp2-err {
    font-size: 13px; line-height: 1.5; color: var(--color-text);
    padding: 8px 10px; margin-bottom: 6px;
    background: var(--color-warning-soft); border-radius: 8px;
}
.rp2-err b { color: var(--color-ink); }
.rp2-err i { color: var(--color-muted); font-style: normal; }
.rp2-tips { margin-top: 10px; font-size: 13px; line-height: 1.6; color: var(--color-muted); }