/* Shared PDF literature viewer pages */
:root {
    --font-sans: "Rubik", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --brand: #1e4ed8;
    --brand-hover: #1b46c4;
    --muted: #526173;
    --line: #cbd5e1;
    --surface: #ffffff;
}
body {
    font-family: var(--font-sans);
    background: #0a1830;
    color: #1f2937;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.bg-canvas { background: #0a1830 !important; }
.bg-surface { background: var(--surface) !important; }
.text-muted { color: var(--muted) !important; }
.border-line { border-color: var(--line) !important; }

.pdf-page-top {
    background: #0a1830;
    padding-top: 1.25rem;
}
@media (min-width: 640px) {
    .pdf-page-top { padding-top: 1.5rem; }
}
.pdf-page-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem 0;
}
@media (min-width: 640px) {
    .pdf-page-inner { padding: 2rem 2rem 0; }
}
.pdf-page-intro {
    margin-bottom: 1.5rem;
}
.pdf-page-title {
    font-size: clamp(1.35rem, 3.5vw, 1.9rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: #fff;
    text-transform: uppercase;
    margin: 0;
}
.pdf-page-accent {
    color: #60a5fa;
}
.pdf-mobile-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.25rem;
}
.pdf-mobile-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 44px;
    box-sizing: border-box;
    background: transparent;
    color: #60a5fa;
    border: 1.5px solid #60a5fa;
    border-radius: 0.5rem;
    padding: 0.625rem 1.125rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-decoration: none;
    white-space: nowrap;
}

.pdf-embed-section {
    display: none;
    padding: 0 1.5rem 2.5rem;
}
@media (min-width: 768px) {
    .pdf-embed-section { display: block; }
}
.pdf-embed-shell {
    max-width: 800px;
    margin: 0 auto;
}
.pdf-embed-frame {
    display: block;
    width: 100%;
    aspect-ratio: 8.5 / 11;
    border: 0;
    background: #fff;
}