:root {
    --void-black: #0c0405;
    --royal-maroon: #800000;
    --luxurious-gold: #FFC107; /* */
    --ash-white: #e0e0e0;
    --glass-card: rgba(255, 255, 255, 0.02);
    --glass-border: rgba(255, 255, 255, 0.06);
}

body.about-page-body {
    background-color: var(--void-black);
    color: var(--ash-white);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    margin: 0;
    padding: 0;
}

.nav-top-wrapper {
    padding: 30px 5%;
}
.back-home-btn {
    text-decoration: none;
    color: white;
    background: var(--glass-card);
    border: 1px solid var(--glass-border);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}
.back-home-btn:hover {
    border-color: var(--luxurious-gold); /* */
    color: var(--luxurious-gold); /* */
    box-shadow: 0 0 15px rgba(255,193,7,0.15);
}

.about-main-wrapper {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px 60px 24px;
}

/* --- Biography Hero --- */
.about-hero-section {
    padding: 40px 0;
}
.hero-text-block h1 {
    font-size: 3rem;
    margin: 10px 0 20px 0;
}
.hero-text-block h1 span {
    color: var(--luxurious-gold); /* */
}
.badge-title {
    color: var(--luxurious-gold); /* */
    text-transform: uppercase;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
}
.bio-paragraph {
    font-size: 1.1rem;
    line-height: 1.9;
    color: #b8b8b8;
}

/* --- Interactive Tabs --- */
.vision-mission-section {
    background: var(--glass-card);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 35px;
    margin: 60px 0;
}
.tab-triggers {
    display: flex;
    gap: 15px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 15px;
    overflow-x: auto;
}
.tab-btn {
    background: transparent;
    border: 1px solid transparent;
    color: #888;
    padding: 12px 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s;
    white-space: nowrap;
}
.tab-btn i { margin-right: 8px; }
.tab-btn.active {
    background: rgba(128, 0, 0, 0.2);
    border-color: var(--royal-maroon);
    color: var(--luxurious-gold); /* */
}
.tab-content-display {
    margin-top: 30px;
}
/* Tab Panels Layout */
.tab-pane {
    display: none; /* ပုံမှန်အချိန်တွင် စာသားများကို ဖျောက်ထားရန် */
    opacity: 0;
}

.tab-pane.active {
    display: block !important; /* ကလစ်နှိပ်ပြီး Active ဖြစ်ချိန်တွင် စာသားများ ပြန်ပေါ်လာရန် */
    opacity: 1;
}
.tab-pane h3 {
    color: white;
    margin-top: 0;
}
.tab-pane p {
    line-height: 1.8;
    color: #b5b5b5;
}

/* --- Interactive PDF Module --- */
.pdf-resource-section {
    margin: 60px 0;
}
.section-title-box h2 span { color: var(--luxurious-gold); } /* */
.pdf-module-grid {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 30px;
    margin-top: 30px;
}
.pdf-selector-sidebar {
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.pdf-item {
    background: var(--glass-card);
    border: 1px solid var(--glass-border);
    padding: 20px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    gap: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.pdf-item i {
    font-size: 2rem;
    color: #e11d48;
}
.pdf-item h4 { margin: 0 0 5px 0; font-size: 0.95rem; color: white;}
.pdf-item p { margin: 0; font-size: 0.8rem; color: #888; }

.pdf-item.active, .pdf-item:hover {
    border-color: var(--luxurious-gold); /* */
    background: rgba(255,193,7,0.02);
}

/* Embedded Viewer Window */
.pdf-viewer-window {
    background: #141414;
    border: 1px solid var(--glass-border);
    height: 600px;
    border-radius: 20px;
    overflow: hidden;
    position: relative;
}
.viewer-loader {
    position: absolute;
    inset: 0;
    background: #141414;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    color: var(--luxurious-gold); /* */
    z-index: 5;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}
.viewer-loader.loading { opacity: 1; pointer-events: auto; }
.pdf-fallback-msg {
    padding: 40px;
    text-align: center;
}
.download-link-btn {
    display: inline-block;
    background: var(--royal-maroon);
    color: white;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 8px;
    margin-top: 15px;
}

/* --- Footer --- */
.about-footer { text-align: center; margin-top: 80px; }
.line-sep { height: 1px; background: var(--glass-border); margin-bottom: 20px; }
.gold-text { color: var(--luxurious-gold); font-weight: 600; } /* */

/* --- Mobile Responsive Layout --- */
@media (max-width: 900px) {
    .pdf-module-grid { grid-template-columns: 1fr; }
    .pdf-viewer-window { height: 450px; }
}









/* PDF Card အတွင်း ဒေါင်းလုဒ်ဆွဲရန် Icon Style */
.pdf-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 15px;
    padding-right: 55px; /* Icon အတွက် နေရာချန်ရန် */
}

.direct-dl-icon {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.4rem;
    color: var(--luxurious-gold) !important;
    opacity: 0.7;
    transition: all 0.2s ease;
    z-index: 10; /* Card ကလစ်ထက် သက်ရောက်မှု ပိုရှိစေရန် */
}

.direct-dl-icon:hover {
    opacity: 1;
    transform: translateY(-50%) scale(1.15);
    text-shadow: 0 0 10px rgba(255, 193, 7, 0.4);
}