/* ═══════════════════════════════════════════════
   CERTIFICATION SUB-PAGE — Card Selector + PDF Panels
   Shared by comptia.html and microsoft.html
   Uses existing theme vars
   ═══════════════════════════════════════════════ */

/* ── Sub-page Hero ── */
.subpage-hero {
    position: relative;
    width: 90%;
    max-width: var(--max-width);
    border: var(--border-width) solid var(--primary-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 2rem;
    margin-bottom: 2.5rem;
}

.subpage-hero-content {
    margin: 2.5rem 0 1.5rem;
}

.subpage-title {
    font-family: var(--font-main);
    font-size: 5rem;
    line-height: 1;
    text-transform: uppercase;
    color: var(--primary-color);
    margin: 0;
}

.subpage-subtitle {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    opacity: 0.6;
    margin-top: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    line-height: 1.6;
}

/* ── Back Link ── */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-color);
    text-decoration: none;
    opacity: 0.6;
    transition: opacity 0.3s ease;
    margin-bottom: 1.5rem;
}

.back-link:hover {
    opacity: 1;
}

/* ═══════════════════════════════════════════════
   CERTIFICATION SELECTOR CARDS
   ═══════════════════════════════════════════════ */

.cert-selector-section {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto 3rem;
}

.cert-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 220px));
    justify-content: center;
    gap: 1.5rem;
}

/* ── Individual Card ── */
.cert-select-card {
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    background: var(--bg-color);
    min-height: 340px;
    justify-content: center;
}

.cert-select-card::after {
    content: '';
    position: absolute;
    inset: 4px;
    border: 1.5px solid var(--primary-color);
    border-radius: 16px;
    opacity: 0.3;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

@media (hover: hover) {
    /* Light theme: light red wash (CompTIA brand-inspired) */
    .cert-select-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 0 var(--primary-color);
        background: #ffe8e8;
    }

    .cert-select-card:hover::after {
        opacity: 0.6;
        border-color: #C8202F;
    }

    /* Dark theme: white card with dark text */
    html[style*="--bg-color: #0f0f0f"] .cert-select-card:hover {
        background: #ffffff;
        color: #1a1a1a;
        box-shadow: 0 8px 0 rgba(255, 255, 255, 0.35);
    }

    html[style*="--bg-color: #0f0f0f"] .cert-select-card:hover::after {
        border-color: #1a1a1a;
    }
}

/* Active state — light theme: dark red */
.cert-select-card.active {
    background: #fb8787;
    color: #ffffff;
    box-shadow: 0 6px 0 rgba(155, 27, 42, 0.45);
}

.cert-select-card.active::after {
    border-color: rgba(255, 255, 255, 0.4);
    opacity: 0.4;
}

.cert-select-card.active .cert-logo-svg {
    filter: invert(1);
}

.cert-select-card.active .cert-select-tag {
    border-color: rgba(255, 255, 255, 0.5);
    opacity: 0.8;
}

.cert-select-card.active .cert-select-status {
    color: #ffffff;
}

/* Dark theme active — white card with dark text */
html[style*="--bg-color: #0f0f0f"] .cert-select-card.active {
    background: #ff0202;
    color: #ffffff;
    box-shadow: 0 6px 0 rgba(255, 255, 255, 0.3);
}

html[style*="--bg-color: #0f0f0f"] .cert-select-card.active::after {
    border-color: rgba(0, 0, 0, 0.2);
    opacity: 0.4;
}

html[style*="--bg-color: #0f0f0f"] .cert-select-card.active .cert-logo-svg {
    filter: invert(0);
}

html[style*="--bg-color: #0f0f0f"] .cert-select-card.active .cert-select-tag {
    border-color: rgba(0, 0, 0, 0.3);
    opacity: 0.7;
}

html[style*="--bg-color: #0f0f0f"] .cert-select-card.active .cert-select-status {
    color: #f0e96c;
}

/* Dark theme: invert SVG icons to appear white on dark background */
html[style*="--bg-color: #0f0f0f"] .cert-logo-svg {
    filter: invert(1);
}

/* Raster logos (PNG/JPG from CDN) — never invert, show original colors */
.cert-logo-raster {
    filter: none !important;
    object-fit: contain;
    border-radius: 8px;
}

/* ── Card Icon ── */
.cert-select-icon {
    width: 110px;
    height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-logo-svg {
    width: 100%;
    height: 100%;
    color: var(--primary-color);
    transition: filter 0.3s ease;
}

/* ── Card Title ── */
.cert-select-title {
    font-family: var(--font-main);
    font-size: 1.6rem;
    text-transform: uppercase;
    margin: 0;
    letter-spacing: 0.05em;
    text-align: center;
}

/* ── Exam Code Tag ── */
.cert-select-tag {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 3px 10px;
    border: var(--border-width) solid var(--primary-color);
    opacity: 0.5;
    transition: all 0.3s ease;
}

/* ── Status Badge ── */
.cert-select-status {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    opacity: 0.6;
}

.cert-select-status.available {
    opacity: 0.8;
}

.cert-select-status.coming-soon {
    opacity: 0.4;
    font-style: italic;
}

/* ═══════════════════════════════════════════════
   CERTIFICATION PANELS (expandable PDF areas)
   ═══════════════════════════════════════════════ */

.cert-panels-section {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto 2rem;
}

/* ── Panel (Hidden by default) ── */
.cert-panel {
    display: none;
    animation: panelFadeIn 0.35s ease;
}

.cert-panel.open {
    display: block;
}

@keyframes panelFadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.panel-header {
    margin-bottom: 2rem;
    border-bottom: var(--border-width) solid var(--primary-color);
    padding-bottom: 1rem;
}

.panel-description {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    opacity: 0.6;
    line-height: 1.7;
    margin-top: 0.5rem;
    max-width: 700px;
}

/* ── PDF Row (download link) ── */
.pdf-list {
    display: flex;
    flex-direction: column;
}

.pdf-row {
    display: grid;
    grid-template-columns: 40px 1fr auto 40px;
    align-items: center;
    gap: 1.25rem;
    padding: 1.25rem 1.5rem;
    border: var(--border-width) solid var(--primary-color);
    border-bottom: none;
    text-decoration: none;
    color: var(--primary-color);
    transition: background 0.2s ease;
    min-height: 72px;
}

.pdf-row:last-child {
    border-bottom: var(--border-width) solid var(--primary-color);
}

.pdf-row:hover {
    background: rgba(128, 128, 128, 0.06);
}

html[style*="--bg-color: #0f0f0f"] .pdf-row:hover {
    background: rgba(255, 255, 255, 0.04);
}

.pdf-row-icon svg {
    width: 28px;
    height: 28px;
    opacity: 0.6;
}

.pdf-row-info {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}

.pdf-row-title {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.pdf-row-desc {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    opacity: 0.5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pdf-row-size {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    opacity: 0.4;
    text-transform: uppercase;
    white-space: nowrap;
}

.pdf-row-action {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.4;
    transition: opacity 0.2s ease;
}

.pdf-row:hover .pdf-row-action {
    opacity: 1;
}

/* ── Empty State (Coming Soon) ── */
.panel-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    border: var(--border-width) dashed var(--primary-color);
    opacity: 0.5;
    text-align: center;
}

.empty-icon {
    margin-bottom: 1rem;
    opacity: 0.4;
}

.empty-text {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 0;
}

.empty-sub {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    opacity: 0.6;
    margin-top: 0.5rem;
    max-width: 400px;
    line-height: 1.6;
}

/* ── Footer Disclaimer ── */
.resources-footer-section {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto 4rem;
    padding-top: 1.5rem;
    border-top: var(--border-width) solid var(--primary-color);
}

.resources-footer-section p {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    opacity: 0.4;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    line-height: 1.6;
}

/* ═══════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
   ═══════════════════════════════════════════════ */

/* ── Tablet (768px – 1023px) ── */
@media (max-width: 1023px) and (min-width: 768px) {
    .subpage-hero {
        width: 92%;
        padding: 1.75rem;
    }

    .subpage-title {
        font-size: clamp(2.5rem, 7vw, 5rem);
    }

    .cert-selector-section,
    .cert-panels-section,
    .resources-footer-section {
        width: 92%;
    }

    .cert-cards-grid {
        gap: 1.25rem;
    }

    .cert-select-card {
        padding: 1.75rem 1.25rem;
        min-height: 300px;
    }

    .cert-select-icon {
        width: 88px;
        height: 88px;
    }
}

/* ── Mobile (< 768px) ── */
@media (max-width: 767px) {
    .subpage-hero {
        width: 95%;
        padding: 1.25rem;
    }

    .subpage-title {
        font-size: clamp(2rem, 10vw, 4rem);
    }

    .subpage-subtitle {
        font-size: 0.78rem;
    }

    .subpage-hero-content {
        margin: 1.5rem 0 1rem;
    }

    .cert-selector-section,
    .cert-panels-section,
    .resources-footer-section {
        width: 95%;
    }

    .cert-cards-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 0.75rem;
    }

    .cert-select-card {
        padding: 1.25rem 0.75rem;
        min-height: 240px;
        border-radius: 14px;
        gap: 0.6rem;
    }

    .cert-select-card::after {
        border-radius: 10px;
        inset: 3px;
    }

    .cert-select-icon {
        width: 100px;
        height: 100px;
    }

    .cert-select-tag {
        font-size: 0.5rem;
        padding: 2px 6px;
    }

    .cert-select-status {
        font-size: 0.55rem;
    }

    /* PDF rows */
    .pdf-row {
        grid-template-columns: 32px 1fr 40px;
        padding: 1rem;
        gap: 0.75rem;
    }

    .pdf-row-size {
        display: none;
    }

    .pdf-row-title {
        font-size: 0.8rem;
    }

    .pdf-row-desc {
        font-size: 0.68rem;
    }

    .pdf-row-icon svg {
        width: 24px;
        height: 24px;
    }

    .panel-empty {
        padding: 2.5rem 1.5rem;
    }

    .subpage-hero .card-header {
        font-size: 0.72rem;
    }

    .subpage-hero .align-right {
        text-align: left;
        margin-top: 4px;
    }
}

/* ── Small phones (< 480px) ── */
@media (max-width: 480px) {
    .subpage-hero {
        width: 98%;
        padding: 1rem;
    }

    .subpage-title {
        font-size: clamp(1.8rem, 12vw, 3rem);
    }

    .cert-selector-section,
    .cert-panels-section,
    .resources-footer-section {
        width: 98%;
    }

    .cert-cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    .cert-select-card {
        padding: 1rem 0.5rem;
        min-height: 200px;
        border-radius: 12px;
        gap: 0.4rem;
    }

    .cert-select-card::after {
        border-radius: 8px;
        inset: 2px;
        border-width: 1px;
    }

    .cert-select-icon {
        width: 80px;
        height: 80px;
    }

    .cert-select-title {
        font-size: 0.85rem;
    }

    .cert-select-tag {
        font-size: 0.45rem;
        padding: 1px 5px;
    }

    .cert-select-status {
        font-size: 0.48rem;
    }

    .pdf-row {
        grid-template-columns: 1fr 36px;
        padding: 1rem 0.75rem;
    }

    .pdf-row-icon {
        display: none;
    }

    .pdf-row-title {
        font-size: 0.75rem;
    }

    .pdf-row-desc {
        font-size: 0.62rem;
    }

    .section-title {
        font-size: clamp(1.4rem, 6vw, 2rem);
    }

    .panel-empty {
        padding: 2rem 1rem;
    }

    .empty-text {
        font-size: 0.85rem;
    }

    .empty-sub {
        font-size: 0.7rem;
    }
}

/* ═══════════════════════════════════════════════
   MICROSOFT PAGE — Blue theme overrides
   ═══════════════════════════════════════════════ */

/* Narrow columns so 2 cards stay portrait (vertical rectangle) */
.ms-page .cert-cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 220px));
    justify-content: center;
}

/* Light theme hover: light blue wash */
@media (hover: hover) {
    .ms-page .cert-select-card:hover {
        background: #dbeafe;
        box-shadow: 0 8px 0 #1d4ed8;
    }

    .ms-page .cert-select-card:hover::after {
        border-color: #2563eb;
    }

    /* Dark theme hover: deep blue */
    html[style*="--bg-color: #0f0f0f"] .ms-page .cert-select-card:hover {
        background: #1e3a5f;
        color: #ffffff;
        box-shadow: 0 8px 0 rgba(59, 130, 246, 0.45);
    }

    html[style*="--bg-color: #0f0f0f"] .ms-page .cert-select-card:hover::after {
        border-color: #60a5fa;
    }
}

/* Active — light theme: dark blue */
.ms-page .cert-select-card.active {
    background: #1d4ed8;
    color: #ffffff;
    box-shadow: 0 6px 0 rgba(29, 78, 216, 0.45);
}

.ms-page .cert-select-card.active::after {
    border-color: rgba(255, 255, 255, 0.4);
    opacity: 0.4;
}

.ms-page .cert-select-card.active .cert-select-tag {
    border-color: rgba(255, 255, 255, 0.5);
    opacity: 0.8;
}

.ms-page .cert-select-card.active .cert-select-status {
    color: #ffffff;
}

/* Active — dark theme: bright blue */
html[style*="--bg-color: #0f0f0f"] .ms-page .cert-select-card.active {
    background: #2563eb;
    color: #ffffff;
    box-shadow: 0 6px 0 rgba(37, 99, 235, 0.45);
}

html[style*="--bg-color: #0f0f0f"] .ms-page .cert-select-card.active::after {
    border-color: rgba(255, 255, 255, 0.3);
    opacity: 0.4;
}

html[style*="--bg-color: #0f0f0f"] .ms-page .cert-select-card.active .cert-select-tag {
    border-color: rgba(255, 255, 255, 0.5);
    opacity: 0.8;
}

html[style*="--bg-color: #0f0f0f"] .ms-page .cert-select-card.active .cert-select-status {
    color: #ffffff;
}