/* ============================================================
   FAQ PAGE CSS
   ============================================================ */

/* ---- Search ---- */
.faq-search-section {
    background: var(--white);
    padding: 40px 0;
    border-bottom: 1px solid var(--border);
}
.faq-search-wrap { position: relative; max-width: 640px; margin: 0 auto; }
.faq-search {
    width: 100%; padding: 18px 56px 18px 24px;
    border: 2px solid var(--border); border-radius: 99px;
    font-size: 16px; font-family: var(--font-primary);
    color: var(--text-dark); background: var(--lighter-bg);
    transition: border-color 0.3s, box-shadow 0.3s;
}
.faq-search:focus {
    outline: none; border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(20,184,166,0.12);
    background: white;
}
.faq-search-icon {
    position: absolute; right: 20px; top: 50%;
    transform: translateY(-50%);
    color: var(--text-gray); pointer-events: none;
}
.faq-no-results {
    position: absolute; top: calc(100% + 8px); left: 0; right: 0;
    background: var(--white); border: 1px solid var(--border);
    border-radius: var(--radius-md); padding: 16px; text-align: center;
    font-size: 15px; color: var(--text-gray); z-index: 10;
    box-shadow: var(--shadow-md);
}

/* ---- Category Tabs ---- */
.faq-cat-tabs {
    display: flex; flex-wrap: wrap; gap: 10px;
    margin-bottom: 40px; justify-content: center;
}
.faq-cat-btn {
    padding: 10px 24px; border-radius: 99px;
    border: 2px solid var(--border);
    background: white; color: var(--text-gray);
    font-size: 14px; font-weight: 600; cursor: pointer;
    transition: background 0.25s, border-color 0.25s, color 0.25s;
}
.faq-cat-btn:hover { border-color: var(--primary); color: var(--primary); }
.faq-cat-btn.active {
    background: var(--primary); border-color: var(--primary); color: white;
}

/* ---- FAQ Item ---- */
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 2px; }

.faq-item {
    border: 1px solid var(--border); border-radius: var(--radius-md);
    background: var(--white); overflow: hidden;
    transition: box-shadow 0.3s;
    margin-bottom: 8px;
}
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-item.faq-hidden { display: none; }

.faq-trigger {
    width: 100%; display: flex; align-items: center;
    justify-content: space-between; gap: 16px;
    padding: 22px 24px;
    background: none; border: none; cursor: pointer;
    text-align: left;
}
.faq-trigger:hover { background: var(--lighter-bg); }
.faq-item.open > .faq-trigger { background: var(--lighter-bg); }

.faq-q {
    font-size: 17px; font-weight: 600; color: var(--text-dark);
    flex: 1; line-height: 1.5;
}
.faq-item.open .faq-q { color: var(--primary); }

.faq-arrow {
    display: flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border-radius: 50%;
    background: rgba(20,184,166,0.08); color: var(--primary);
    flex-shrink: 0; transition: transform 0.35s, background 0.25s;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); background: var(--primary); color: white; }

/* ---- FAQ Answer ---- */
.faq-answer { overflow: hidden; transition: max-height 0.4s ease; }
.faq-answer-inner { padding: 0 24px 24px; }

/* ---- Answer Type Tabs ---- */
.answer-tabs {
    display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; padding-top: 16px;
}
.answer-tab {
    padding: 8px 20px; border-radius: 99px;
    border: 2px solid var(--border); background: white;
    font-size: 13px; font-weight: 600; color: var(--text-gray);
    cursor: pointer; transition: all 0.25s;
}
.answer-tab:hover { border-color: var(--primary); color: var(--primary); }
.answer-tab.active {
    background: var(--primary); border-color: var(--primary); color: white;
}

/* ---- Answer Content ---- */
.answer-content {
    font-size: 15px; color: var(--text-gray); line-height: 1.9;
    padding-bottom: 8px;
    animation: fadeSlide 0.35s ease;
}
@keyframes fadeSlide {
    from { opacity: 0; transform: translateX(8px); }
    to   { opacity: 1; transform: translateX(0); }
}
.answer-content.quick-content { background: rgba(20,184,166,0.04); border-left: 3px solid var(--primary); padding: 16px; border-radius: 0 8px 8px 0; }
.quick-answer { font-size: 16px; color: var(--text-dark); line-height: 1.7; }
.answer-content[data-type="science"] { background: rgba(30,58,95,0.03); border-left: 3px solid var(--gradient-blue); padding: 16px; border-radius: 0 8px 8px 0; }

/* ---- Highlight match ---- */
mark.faq-highlight { background: rgba(20,184,166,0.25); color: inherit; border-radius: 2px; }

/* ---- Screen reader only ---- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ---- Responsive ---- */
@media (max-width: 640px) {
    .faq-search-section { padding: 28px 0; }
    .faq-trigger { padding: 18px 16px; gap: 12px; }
    .faq-q { font-size: 15px; }
    .faq-answer-inner { padding: 0 16px 16px; }
    .answer-tabs { gap: 6px; }
    .answer-tab { padding: 6px 14px; font-size: 12px; }
}