/* ============================================
   SUBPAGE SPECIFIC STYLES
   Used by all pages except index.html
   ============================================ */

/* --- Page Content Area --- */
.page-content {
    width: 90%; max-width: 700px;
    margin: 20px auto 0;
    padding-bottom: 40px;
}

.page-title {
    font-size: 1.8rem; font-weight: 800;
    text-align: center; margin-bottom: 8px;
    letter-spacing: -0.5px;
}
.page-title span { color: var(--primary); }
.page-subtitle {
    text-align: center; color: var(--text-sub);
    font-size: 0.85rem; font-weight: 500;
    margin-bottom: 30px;
}

/* --- Section Headers --- */
.section-label {
    font-size: 0.7rem; color: var(--text-sub);
    margin: 35px 0 12px;
    text-transform: uppercase; letter-spacing: 2px;
    font-weight: 800;
    display: flex; align-items: center;
}
.section-label::after {
    content: ""; flex: 1; height: 1px;
    background: var(--border); margin-left: 15px;
}

/* --- Subject Grid --- */
.subject-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
    gap: 12px;
}
.subject-btn {
    padding: 16px 12px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    text-align: center;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 700; font-size: 0.8rem;
    display: flex; align-items: center; justify-content: center;
    min-height: 56px;
    box-shadow: var(--neu-shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.subject-btn:hover {
    background: var(--primary);
    color: white !important;
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(108, 92, 231, 0.15);
}

/* Accent border variants */
.gt-btn { border-left: 4px solid #ff9f43; }
.rev-btn { border-left: 4px solid #feca57; }
.pyq-btn { border-left: 4px solid #4834d4; }
.btr-btn { border-left: 4px solid #f1c40f; }

/* --- Divider Bar --- */
.main-divider {
    text-align: center;
    background: var(--text-main);
    color: var(--bg);
    padding: 16px;
    border-radius: 14px;
    margin: 50px 0 25px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 800;
    font-size: 0.9rem;
}

/* --- Jump/Nav Buttons --- */
.jump-nav {
    display: flex; gap: 10px;
    justify-content: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
}
.jump-btn {
    padding: 10px 22px;
    border-radius: 50px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    text-decoration: none;
    color: var(--text-main);
    font-size: 0.75rem;
    font-weight: 700;
    box-shadow: var(--neu-shadow);
    transition: 0.2s;
}
.jump-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }

/* --- Note Card --- */
.note-card {
    background: rgba(108, 92, 231, 0.06);
    color: var(--primary);
    padding: 10px 20px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 1px solid rgba(108, 92, 231, 0.15);
    text-align: center;
}

/* --- Sub-Nav (PrepLadder style) --- */
.sub-nav {
    position: sticky; top: 65px;
    background: var(--glass);
    backdrop-filter: blur(15px);
    padding: 14px 0;
    z-index: 999;
    border-bottom: 1px solid var(--border);
    display: flex; justify-content: center; gap: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 10px 15px;
}
.sub-nav::-webkit-scrollbar { display: none; }
.nav-pill {
    white-space: nowrap;
    flex-shrink: 0;
}
.nav-pill {
    text-decoration: none;
    color: var(--text-sub);
    font-size: 0.7rem; font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 10px 24px;
    border-radius: 50px;
    background: var(--card-bg);
    border: 1.5px solid var(--border);
    transition: 0.3s; cursor: pointer;
    box-shadow: var(--neu-shadow);
}
.nav-pill:hover { border-color: var(--primary); color: var(--primary); }
.nav-pill.active {
    background: var(--primary);
    color: white !important;
    border-color: var(--primary);
    box-shadow: 0 6px 18px rgba(108, 92, 231, 0.25);
}

/* --- Doc Tutorial Mode Cards --- */
.mode-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    width: 100%; max-width: 700px;
}
.mode-card {
    padding: 45px 25px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 24px;
    text-align: center;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 800; font-size: 1.1rem;
    text-transform: uppercase; letter-spacing: 1px;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    box-shadow: var(--neu-shadow);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.mode-card:hover {
    color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(108, 92, 231, 0.12);
}
.mode-tag {
    font-size: 0.65rem;
    background: rgba(108, 92, 231, 0.08);
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 15px;
    font-weight: 800;
}

/* --- Surgery Dada Card Style --- */
.surgery-card {
    padding: 22px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 700; font-size: 0.88rem;
    display: flex; flex-direction: column; gap: 8px;
    box-shadow: var(--neu-shadow);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.surgery-card:hover {
    background: var(--primary); color: white !important;
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(108, 92, 231, 0.2);
}
.surgery-card .tag {
    font-size: 0.6rem; text-transform: uppercase;
    opacity: 0.6; letter-spacing: 1px;
}
.surgery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 15px;
}

/* --- Marrow Accordion --- */
.subject-wrapper {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--neu-shadow);
    transition: 0.3s;
}
.subject-wrapper.active {
    border-color: var(--primary);
    box-shadow: 0 8px 20px rgba(108, 92, 231, 0.1);
    border-width: 1.5px;
}
.subject-header {
    width: 100%; padding: 18px;
    background: none; border: none;
    display: flex; justify-content: space-between; align-items: center;
    cursor: pointer; color: var(--text-main);
    font-family: inherit; font-weight: 700;
    font-size: 0.88rem; text-align: left;
}
.subject-header:hover { background: rgba(108, 92, 231, 0.04); }
.subject-header svg { transition: transform 0.3s; color: var(--primary); }
.subject-wrapper.active .subject-header svg { transform: rotate(180deg); }
.chapter-list {
    max-height: 0; overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(108, 92, 231, 0.015);
}
.subject-wrapper.active .chapter-list {
    max-height: 450px; overflow-y: auto;
    border-top: 1px solid var(--border);
}
.chapter-item {
    padding: 11px 18px;
    text-decoration: none; color: var(--text-sub);
    font-size: 0.82rem;
    display: flex; align-items: center;
    border-bottom: 1px solid var(--border);
    transition: 0.2s; cursor: pointer;
}
.chapter-item:last-child { border-bottom: none; }
.chapter-item:hover { background: var(--primary); color: white; padding-left: 24px; }
.chapter-item::before { content: '•'; margin-right: 10px; color: var(--primary); font-weight: 800; }
.chapter-item:hover::before { color: white; }

.marrow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 14px; margin-bottom: 25px;
}

/* --- RR Section (PrepLadder) --- */
.rr-section .subject-btn { border-left: 4px solid #00cec9; }
.rr-section .subject-btn:hover { background: #00cec9; border-color: #00cec9; }
.rr-active .nav-pill.active {
    background: #00cec9 !important;
    border-color: #00cec9 !important;
    box-shadow: 0 6px 18px rgba(0, 206, 201, 0.25) !important;
}
.divider { height: 1px; background: var(--border); margin: 60px 0; }

/* --- Search Highlight Animation --- */
@keyframes pulseHighlight {
    0% { box-shadow: 0 0 0px var(--primary); }
    50% { box-shadow: 0 0 20px var(--primary); }
    100% { box-shadow: 0 0 0px var(--primary); }
}

@media (max-width: 480px) {
    .subject-grid { grid-template-columns: 1fr 1fr; }
    .page-title { font-size: 1.4rem; }
    .marrow-grid { grid-template-columns: 1fr; }
    .nav-pill { padding: 8px 18px; font-size: 0.65rem; }
    .surgery-grid { grid-template-columns: 1fr; }
    .mode-card { padding: 35px 20px; font-size: 0.95rem; }
}