/* ===== INTERACTIVE MODULES ===== */
/* Reusable styles for quiz, match, sort, and sentence builder */
/* All classes prefixed with iq- to avoid collisions */

/* --- Shared --- */
@keyframes iqShake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

@keyframes iqPopIn {
    from { opacity: 0; transform: scale(0.85); }
    to   { opacity: 1; transform: scale(1); }
}

@keyframes iqFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.iq-score {
    text-align: center;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 14px;
}

.iq-score span {
    font-weight: 800;
    color: var(--text);
}

.iq-btn {
    padding: 7px 22px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: rgba(0,0,0,0.05);
    color: var(--text);
    cursor: pointer;
    font-size: 13px;
    font-family: inherit;
    transition: all 0.18s;
}

.iq-btn:hover {
    background: var(--teal);
    border-color: var(--teal);
    color: #fff;
}

.iq-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.iq-btn:disabled:hover {
    background: rgba(0,0,0,0.05);
    border-color: var(--border);
    color: var(--text);
}

/* --- QUIZ MODULE --- */
.iq-quiz {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.iq-quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.iq-quiz-progress {
    font-size: 12px;
    color: var(--muted);
    font-weight: 600;
}

.iq-quiz-question {
    animation: iqFadeIn 0.25s ease;
}

.iq-quiz-q-text {
    font-size: 18px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.4;
}

.iq-quiz-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.iq-quiz-opt {
    background: rgba(0,0,0,0.04);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    transition: all 0.18s;
    font-family: inherit;
    color: var(--text);
}

.iq-quiz-opt:hover:not(.disabled) {
    border-color: rgba(var(--teal-rgb),0.5);
    background: rgba(var(--teal-rgb),0.06);
    transform: scale(1.02);
}

.iq-quiz-opt.correct {
    border-color: var(--green);
    background: rgba(var(--green-rgb),0.1);
    color: var(--green);
}

.iq-quiz-opt.wrong {
    border-color: var(--red);
    background: rgba(var(--red-rgb),0.08);
    color: var(--red);
    animation: iqShake 0.4s ease;
}

.iq-quiz-opt.disabled {
    cursor: default;
    opacity: 0.6;
}

.iq-quiz-opt.disabled.correct {
    opacity: 1;
}

.iq-quiz-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

/* --- MATCH PAIRS MODULE --- */
.iq-match {
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
}

.iq-match-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.iq-match-col-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--muted);
    text-align: center;
    margin-bottom: 10px;
}

.iq-match-col {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.iq-match-card {
    background: rgba(0,0,0,0.04);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 12px 16px;
    cursor: pointer;
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.18s;
    user-select: none;
}

.iq-match-card:hover:not(.matched) {
    border-color: rgba(var(--cn-rgb),0.4);
    transform: scale(1.03);
}

.iq-match-card.selected {
    border-color: var(--teal);
    background: rgba(var(--teal-rgb),0.08);
    box-shadow: 0 0 0 3px rgba(var(--teal-rgb),0.15);
}

.iq-match-card.matched {
    border-color: var(--green);
    background: rgba(var(--green-rgb),0.08);
    color: var(--green);
    cursor: default;
    opacity: 0.7;
}

.iq-match-card.error {
    border-color: var(--red);
    background: rgba(var(--red-rgb),0.08);
    animation: iqShake 0.4s ease;
}

.iq-match-card .cn {
    color: var(--cn);
}

/* --- GROUP SORT MODULE --- */
.iq-sort {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

.iq-sort-zones {
    display: grid;
    gap: 12px;
    margin-bottom: 18px;
}

.iq-sort-zone {
    border: 2px dashed var(--border);
    border-radius: 14px;
    padding: 12px;
    min-height: 60px;
    cursor: pointer;
    transition: all 0.2s;
}

.iq-sort-zone:hover {
    border-color: rgba(0,0,0,0.25);
    background: rgba(0,0,0,0.02);
}

.iq-sort-zone.active {
    border-style: solid;
    background: rgba(0,0,0,0.04);
}

.iq-sort-zone-label {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.iq-sort-zone-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    border-radius: 5px;
    font-size: 10px;
    font-weight: 800;
    color: #fff;
    padding: 0 5px;
}

.iq-sort-zone-items {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.iq-sort-zone-item {
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    color: var(--cn);
    background: rgba(0,0,0,0.05);
    animation: iqPopIn 0.25s ease;
}

.iq-sort-pool {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    padding: 16px;
    background: rgba(0,0,0,0.03);
    border: 1px solid var(--border);
    border-radius: 14px;
}

.iq-sort-pool-item {
    padding: 10px 18px;
    border-radius: 10px;
    background: rgba(0,0,0,0.05);
    border: 2px solid var(--border);
    font-size: 18px;
    font-weight: 700;
    color: var(--cn);
    cursor: pointer;
    transition: all 0.18s;
    user-select: none;
}

.iq-sort-pool-item:hover {
    border-color: rgba(var(--cn-rgb),0.4);
    transform: scale(1.05);
}

.iq-sort-pool-item.placing {
    border-color: var(--teal);
    background: rgba(var(--teal-rgb),0.08);
    box-shadow: 0 0 0 3px rgba(var(--teal-rgb),0.15);
}

.iq-sort-pool-item.correct {
    border-color: var(--green);
    background: rgba(var(--green-rgb),0.08);
    animation: iqPopIn 0.3s ease;
}

.iq-sort-pool-item.wrong {
    border-color: var(--red);
    background: rgba(var(--red-rgb),0.08);
    animation: iqShake 0.4s ease;
}

.iq-sort-pool-item .hint {
    display: block;
    font-size: 10px;
    color: var(--muted);
    font-weight: 400;
    margin-top: 2px;
}

/* --- SENTENCE BUILDER MODULE --- */
.iq-sentence {
    width: 100%;
    max-width: 650px;
    margin: 0 auto;
}

.iq-sentence-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.iq-sentence-hint {
    font-size: 16px;
    color: var(--muted);
    text-align: center;
    margin-bottom: 16px;
    font-style: italic;
    line-height: 1.5;
}

.iq-sentence-workspace {
    min-height: 64px;
    border: 2px dashed var(--border);
    border-radius: 14px;
    padding: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 16px;
    transition: border-color 0.2s;
}

.iq-sentence-workspace:empty::before {
    content: 'Click blocks below...';
    color: var(--muted);
    font-size: 13px;
    font-style: italic;
}

.iq-sentence-workspace.correct {
    border-color: var(--green);
    border-style: solid;
    background: rgba(var(--green-rgb),0.05);
}

.iq-sentence-workspace.wrong {
    animation: iqShake 0.4s ease;
    border-color: var(--red);
}

.iq-sentence-pool {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    padding: 14px;
    background: rgba(0,0,0,0.03);
    border: 1px solid var(--border);
    border-radius: 14px;
    margin-bottom: 16px;
    min-height: 52px;
}

.iq-sentence-block {
    padding: 8px 16px;
    border-radius: 10px;
    background: rgba(var(--cn-rgb),0.08);
    border: 2px solid rgba(var(--cn-rgb),0.25);
    font-size: 18px;
    font-weight: 700;
    color: var(--cn);
    cursor: pointer;
    transition: all 0.18s;
    user-select: none;
}

.iq-sentence-block:hover {
    transform: scale(1.05);
    border-color: var(--cn);
}

.iq-sentence-block.placed {
    background: rgba(var(--teal-rgb),0.08);
    border-color: rgba(var(--teal-rgb),0.3);
    color: var(--teal);
}

.iq-sentence-block.placed:hover {
    border-color: var(--red);
    background: rgba(var(--red-rgb),0.06);
}

.iq-sentence-block.correct-block {
    background: rgba(var(--green-rgb),0.1);
    border-color: var(--green);
    color: var(--green);
    cursor: default;
}

.iq-sentence-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.iq-sentence-result {
    text-align: center;
    margin-top: 12px;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    animation: iqPopIn 0.25s ease;
}

.iq-sentence-result.ok {
    background: rgba(var(--green-rgb),0.1);
    color: var(--green);
}

.iq-sentence-result.fail {
    background: rgba(var(--red-rgb),0.08);
    color: var(--red);
}

/* --- DARK MODE OVERRIDES --- */

[data-theme="dark"] .iq-btn {
    background: rgba(255,255,255,0.06);
}

[data-theme="dark"] .iq-btn:disabled:hover {
    background: rgba(255,255,255,0.06);
}

[data-theme="dark"] .iq-quiz-opt {
    background: rgba(255,255,255,0.04);
}

[data-theme="dark"] .iq-match-card {
    background: rgba(255,255,255,0.04);
}

[data-theme="dark"] .iq-sort-pool-item {
    background: rgba(255,255,255,0.05);
}

[data-theme="dark"] .iq-sort-zone {
    background: rgba(255,255,255,0.02);
}

[data-theme="dark"] .iq-sort-zone-items {
    background: rgba(255,255,255,0.04);
}

[data-theme="dark"] .iq-sentence-pool {
    background: rgba(255,255,255,0.03);
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    .iq-quiz-options { grid-template-columns: 1fr; }
    .iq-match-cols { gap: 14px; }
    .iq-match-card { padding: 10px 12px; font-size: 14px; }
    .iq-sort-pool-item { padding: 8px 14px; font-size: 16px; }
    .iq-sentence-block { padding: 7px 13px; font-size: 16px; }
}

@media (max-width: 480px) {
    .iq-match-cols { grid-template-columns: 1fr; gap: 16px; }
    .iq-quiz-q-text { font-size: 16px; }
    .iq-quiz-opt { padding: 12px; font-size: 14px; }
    .iq-sort-pool-item { padding: 6px 10px; font-size: 14px; }
    .iq-sentence-block { padding: 6px 11px; font-size: 15px; }
}