/* ==========================================================================
   Interview Questions System — reuses existing CSS variables from styles.css
   (--bg-color, --card-bg, --text-main, --text-muted, --primary, --primary-hover,
   --border, --shadow, --accent-bg) so it matches the rest of CodeMaster Academy.
   ========================================================================== */

.interview-shell {
    max-width: 760px;
    margin: 0 auto;
}

.interview-eyebrow {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.interview-subtitle {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

/* ---- Search box (reuses site's search-box look) ---- */
.interview-search-wrap {
    margin: 0 0 1.75rem;
}

.interview-search-wrap .search-box {
    max-width: 100%;
}

.interview-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.interview-count {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.bookmarks-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.bookmarks-link:hover {
    color: var(--primary-hover);
}

/* ---- Progress ---- */
.interview-progress-row {
    margin-bottom: 1.5rem;
}

.interview-progress-row span {
    display: block;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.6rem;
}

.interview-progress-bar {
    width: 100%;
    height: 8px;
    border-radius: 6px;
    background: var(--bg-color);
    border: 1px solid var(--border);
    overflow: hidden;
}

.interview-progress-fill {
    height: 100%;
    width: 2.5%;
    background: linear-gradient(90deg, var(--primary), var(--primary-hover));
    border-radius: 6px;
    transition: width 0.3s ease;
}

/* ---- Question card ---- */
.interview-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.75rem;
    box-shadow: var(--shadow);
    animation: fadeInUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.interview-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    border: 1px solid var(--border);
    background: var(--accent-bg);
    color: var(--text-main);
}

.badge-difficulty.badge-easy {
    color: #16a34a;
    border-color: rgba(22, 163, 74, 0.35);
    background: rgba(22, 163, 74, 0.1);
}

.badge-difficulty.badge-medium {
    color: #d97706;
    border-color: rgba(217, 119, 6, 0.35);
    background: rgba(217, 119, 6, 0.1);
}

.badge-difficulty.badge-hard {
    color: #dc2626;
    border-color: rgba(220, 38, 38, 0.35);
    background: rgba(220, 38, 38, 0.1);
}

.badge-tag {
    color: var(--primary);
}

.interview-question-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.5;
    margin-bottom: 1.25rem;
}

.interview-actions-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.btn-icon {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 0.6rem 1.1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

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

.btn-icon.active {
    border-color: var(--primary);
    background: var(--accent-bg);
    color: var(--primary);
}

/* ---- Answer panel (smooth reveal) ---- */
.interview-answer-panel {
    display: grid;
    grid-template-rows: 0fr;
    opacity: 0;
    transition: grid-template-rows 0.35s ease, opacity 0.3s ease, margin 0.35s ease;
    margin-top: 0;
}

.interview-answer-panel.open {
    grid-template-rows: 1fr;
    opacity: 1;
    margin-top: 0.5rem;
}

.interview-answer-inner {
    overflow: hidden;
}

.interview-answer-box {
    background: var(--accent-bg);
    border: 1px solid var(--border);
    border-left: 3px solid var(--primary);
    border-radius: 10px;
    padding: 1.1rem 1.25rem;
}

.interview-answer-label {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.interview-answer-text {
    color: var(--text-main);
    line-height: 1.6;
}

.interview-copy-row {
    margin-top: 0.85rem;
}

.copy-answer-btn {
    background: transparent;
    border: 1px dashed var(--border);
    color: var(--text-muted);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.copy-answer-btn.copied {
    border-color: #16a34a;
    color: #16a34a;
    border-style: solid;
}

/* ---- Navigation ---- */
.interview-nav-buttons {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1.75rem;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 0.85rem 1.75rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-primary:disabled,
.btn-secondary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-secondary {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 0.85rem 1.75rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    transition: all 0.25s ease;
}

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

/* ---- No results ---- */
.interview-empty {
    text-align: center;
    color: var(--text-muted);
    padding: 3rem 1rem;
    display: none;
}

.interview-empty.show {
    display: block;
}

/* ---- Bookmarked list page ---- */
.bookmark-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.bookmark-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow);
}

.bookmark-item .interview-question-text {
    font-size: 1.05rem;
    margin-bottom: 0.75rem;
}

.bookmark-item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.85rem;
}

.bookmark-source {
    color: var(--text-muted);
    font-size: 0.85rem;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 600px) {
    .interview-nav-buttons {
        flex-direction: column;
    }

    .interview-nav-buttons button,
    .interview-nav-buttons a {
        width: 100%;
    }

    .interview-actions-row {
        flex-direction: column;
    }

    .interview-actions-row button {
        width: 100%;
        justify-content: center;
    }

    .interview-question-text {
        font-size: 1.1rem;
    }
}

/* Static, crawlable full question list (fallback content for search engines / no-JS) */
.static-qa-section {
    max-width: 800px;
    margin: 3rem auto 1rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.static-qa-section h2 {
    font-size: 1.5rem;
    color: var(--text-main);
    margin-bottom: 0.75rem;
}

.static-qa-intro {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.static-qa-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.9rem 1.1rem;
    margin-bottom: 0.6rem;
}

.static-qa-item summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text-main);
    list-style: revert;
}

.static-qa-item .static-qa-num {
    color: var(--primary);
}

.static-qa-item .static-qa-diff {
    font-weight: 400;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.static-qa-item p {
    margin: 0.75rem 0 0.1rem;
    color: var(--text-muted);
    line-height: 1.65;
}