/**
 * CTET Proof page — mobile-first, prediction vs actual exam
 * Load after css/styles.css.
 */

/* ========== Mobile-first base (default = small screens) ========== */

/* Hero: compact on mobile */
.ctet-proof-hero .page-hero-sub {
    margin-left: auto;
    margin-right: auto;
    font-size: 0.9rem;
    line-height: 1.4;
}
@media (min-width: 769px) {
    .ctet-proof-hero .page-hero-sub {
        max-width: 56ch;
        font-size: 1rem;
    }
}

/* Sticky paper tabs — always visible when scrolling */
.ctet-proof-tabs-wrap {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-white, #fff);
    border-bottom: 1px solid var(--border-color, rgba(0, 0, 0, 0.08));
    padding: 0.5rem 0;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}
.ctet-proof-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.ctet-proof-tab {
    padding: 0.6rem 1rem;
    font-weight: 700;
    font-size: 0.875rem;
    border-radius: var(--radius-md, 10px);
    border: 1px solid var(--border-color, rgba(0, 0, 0, 0.12));
    background: var(--bg-white, #fff);
    color: var(--text-body, #1a1a1a);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
    -webkit-tap-highlight-color: transparent;
}
.ctet-proof-tab:hover {
    background: var(--bg-light, #f5f5f5);
    border-color: var(--border-color, rgba(0, 0, 0, 0.15));
}
.ctet-proof-tab.active {
    background: var(--primary, #0f3460);
    border-color: var(--primary, #0f3460);
    color: #fff;
}
@media (min-width: 769px) {
    .ctet-proof-tabs-wrap { padding: 0.75rem 0; }
    .ctet-proof-tab { padding: 0.75rem 1.5rem; font-size: 0.95rem; }
}

/* Rare Facts & Peak Probability — key highlights */
.ctet-proof-key {
    padding: 1rem 0 1.25rem;
    background: var(--bg-white, #fff);
    border-bottom: 1px solid var(--border-color, rgba(0, 0, 0, 0.08));
}
.ctet-proof-key-title {
    font-size: 1.1rem;
    font-weight: 800;
    margin: 0 0 0.35rem;
    color: var(--text-heading, #0f3460);
    line-height: 1.3;
}
.ctet-proof-key-intro {
    font-size: 0.85rem;
    color: var(--text-muted, #555);
    margin: 0 0 1rem;
}
.ctet-proof-key-list {
    list-style: none;
    margin: 0;
    padding: 0;
}
.ctet-proof-key-item {
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 0.85rem;
    padding-left: 1rem;
    position: relative;
    color: var(--text-body, #333);
}
.ctet-proof-key-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--primary, #0f3460);
}
.ctet-proof-key-item:last-child {
    margin-bottom: 0;
}
.ctet-proof-key-name {
    color: var(--primary, #0f3460);
    font-weight: 700;
}
@media (min-width: 769px) {
    .ctet-proof-key {
        padding: 1.5rem 0 1.75rem;
    }
    .ctet-proof-key-title { font-size: 1.25rem; }
    .ctet-proof-key-intro { font-size: 0.9rem; margin-bottom: 1.25rem; }
    .ctet-proof-key-item { font-size: 0.95rem; margin-bottom: 1rem; }
}

/* Subject jump strip — horizontal scroll on mobile only */
.ctet-proof-jump {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding: 0.5rem 0 0.75rem;
    margin-bottom: 0.5rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.ctet-proof-jump::-webkit-scrollbar { display: none; }
.ctet-proof-jump a {
    flex: 0 0 auto;
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary, #0f3460);
    background: rgba(15, 52, 96, 0.08);
    border-radius: 999px;
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.2s, color 0.2s;
}
.ctet-proof-jump a:hover,
.ctet-proof-jump a:focus {
    background: rgba(15, 52, 96, 0.15);
    color: var(--primary, #0f3460);
}
@media (min-width: 769px) {
    .ctet-proof-jump { display: none; }
}

/* Main content — tight spacing on mobile */
.ctet-proof-main {
    padding: 1rem 0 2.5rem;
    background: var(--bg-light, #f8f9fa);
}
.ctet-proof-view {
    display: none;
}
.ctet-proof-view.active {
    display: block;
    animation: ctet-proof-fade 0.35s ease;
}
@keyframes ctet-proof-fade {
    from { opacity: 0; }
    to { opacity: 1; }
}
@media (min-width: 769px) {
    .ctet-proof-main { padding: 2.5rem 0 4rem; }
}

/* Subject = details/summary (collapsible on mobile) */
.ctet-proof-subject {
    margin-bottom: 0.5rem;
    border: 1px solid var(--border-color, rgba(0, 0, 0, 0.08));
    border-radius: var(--radius-md, 10px);
    background: var(--bg-white, #fff);
    overflow: hidden;
    scroll-margin-top: 4rem; /* clear sticky tabs when jumping */
}
.ctet-proof-subject[open] {
    margin-bottom: 0.75rem;
}
.ctet-proof-subject:last-of-type {
    margin-bottom: 1rem;
}
@media (min-width: 769px) {
    .ctet-proof-subject {
        margin-bottom: 1.5rem;
        border: none;
        border-radius: 0;
        background: transparent;
    }
    .ctet-proof-subject[open] { margin-bottom: 1.5rem; }
    .ctet-proof-subject:last-of-type { margin-bottom: 2rem; }
}

/* Summary = tappable subject header (mobile) / static heading (desktop) */
.ctet-proof-subject-title {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.35rem;
    margin: 0;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-weight: 800;
    color: var(--text-heading, #0f3460);
    list-style: none;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}
.ctet-proof-subject-title::-webkit-details-marker,
.ctet-proof-subject-title::marker { display: none; }
.ctet-proof-subject-title::before {
    content: '';
    display: inline-block;
    width: 0.5em;
    height: 0.5em;
    margin-right: 0.35rem;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(-45deg);
    transition: transform 0.2s;
    vertical-align: 0.2em;
}
.ctet-proof-subject[open] .ctet-proof-subject-title::before {
    transform: rotate(45deg);
}
.ctet-proof-subject-name {
    flex: 1 1 auto;
}
.ctet-proof-codes {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted, #666);
}
@media (min-width: 769px) {
    .ctet-proof-subject-title {
        padding: 0 0 0.6rem;
        font-size: 1.2rem;
        cursor: default;
        border-bottom: 2px solid var(--border-color, rgba(0, 0, 0, 0.1));
    }
    .ctet-proof-subject-title::before { display: none; }
}

/* Subject body */
.ctet-proof-subject-body {
    padding: 0 1rem 1rem;
}
@media (min-width: 769px) {
    .ctet-proof-subject-body {
        padding: 0.75rem 0 0;
    }
}

/* Comparison table — Prediction | Actual exam | Result */
.ctet-proof-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 0.5rem;
}
.ctet-proof-comp-table {
    width: 100%;
    min-width: 320px;
    border-collapse: collapse;
    font-size: 0.85rem;
}
.ctet-proof-comp-table th,
.ctet-proof-comp-table td {
    padding: 0.6rem 0.75rem;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--border-color, rgba(0, 0, 0, 0.08));
}
.ctet-proof-comp-table th {
    font-weight: 700;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-muted, #555);
    background: var(--bg-light, #f5f5f5);
}
.ctet-proof-comp-table tbody tr:last-child td {
    border-bottom: none;
}
.ctet-proof-comp-table tbody tr:hover {
    background: rgba(15, 52, 96, 0.03);
}
.ctet-proof-comp-table td:first-child {
    border-left: 3px solid var(--primary, #0f3460);
    background: rgba(15, 52, 96, 0.03);
}
.ctet-proof-comp-table td:nth-child(2) {
    border-left: 3px solid #0a9b5c;
    background: rgba(10, 155, 92, 0.04);
}
.ctet-proof-comp-table .ctet-proof-label {
    display: inline;
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-right: 0.25rem;
}
.ctet-proof-comp-table td:first-child .ctet-proof-label {
    color: var(--primary, #0f3460);
}
.ctet-proof-comp-table td:nth-child(2) .ctet-proof-label {
    color: #0a9b5c;
}
.ctet-proof-comp-table .ctet-proof-badge {
    display: inline-block;
    font-size: 0.65rem;
    background: rgba(15, 52, 96, 0.1);
    color: var(--primary, #0f3460);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    margin-right: 0.35rem;
}
.ctet-proof-comp-table .ctet-proof-match {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 800;
    background: #0a9b5c;
    color: #fff;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}
@media (min-width: 769px) {
    .ctet-proof-comp-table { font-size: 0.9rem; }
    .ctet-proof-comp-table th,
    .ctet-proof-comp-table td { padding: 0.75rem 1rem; }
    .ctet-proof-comp-table .ctet-proof-label { font-size: 0.7rem; }
    .ctet-proof-comp-table .ctet-proof-badge { font-size: 0.7rem; }
    .ctet-proof-comp-table .ctet-proof-match { font-size: 0.75rem; padding: 0.25rem 0.6rem; }
}
.ctet-proof-label {
    display: block;
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 0.25rem;
}
.ctet-proof-badge {
    display: inline-block;
    font-size: 0.65rem;
    background: rgba(15, 52, 96, 0.1);
    color: var(--primary, #0f3460);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    margin-right: 0.35rem;
}
.ctet-proof-match {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 800;
    background: #0a9b5c;
    color: #fff;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

/* CTA — compact on mobile */
.ctet-proof-cta {
    text-align: center;
    margin-top: 1.5rem;
    padding: 1.5rem 1rem;
    background: var(--bg-white, #fff);
    border-radius: var(--radius-lg, 12px);
    border: 1px solid var(--border-color, rgba(0, 0, 0, 0.08));
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}
.ctet-proof-cta-title {
    font-size: 1.2rem;
    font-weight: 800;
    margin: 0 0 0.35rem;
    color: var(--text-heading, #1a1a1a);
}
.ctet-proof-cta-highlight {
    color: var(--primary, #0f3460);
}
.ctet-proof-cta-sub {
    margin: 0 0 1rem;
    color: var(--text-muted, #666);
    font-size: 0.85rem;
}
.ctet-proof-cta-btn {
    display: inline-block;
    padding: 0.75rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: var(--radius-md, 10px);
}
@media (min-width: 769px) {
    .ctet-proof-cta {
        margin-top: 3rem;
        padding: 2.5rem 1.5rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    }
    .ctet-proof-cta-title { font-size: 1.5rem; margin-bottom: 0.5rem; }
    .ctet-proof-cta-sub { font-size: 0.95rem; margin-bottom: 1.5rem; }
    .ctet-proof-cta-btn { padding: 0.9rem 1.75rem; font-size: 1rem; }
}