/* ==============================================================
   ROCK GRANITO · ABOUT US (GIỚI THIỆU THƯƠNG HIỆU)
   Luxury Architectural Surfaces & Heritage System
   ============================================================== */

:root {
    --rock-black: #171513;
    --rock-dark: #23201d;
    --rock-accent: #916147;
    --rock-accent-hover: #784d35;
    --rock-gold: #c69c6d;
    --rock-gold-soft: #f0e6d9;
    --rock-line: #ded5cb;
    --rock-line-light: #eee7de;
    --rock-cream: #faf7f3;
    --rock-stone: #f4eee7;
    --rock-gray: #6b645c;
    --rock-light-gray: #8c847b;
    --rock-radius-sm: 8px;
    --rock-radius-md: 12px;
    --rock-radius-lg: 16px;
    --rock-shadow-sm: 0 4px 14px rgba(23, 21, 19, 0.05);
    --rock-shadow-md: 0 10px 28px rgba(23, 21, 19, 0.08);
    --rock-shadow-lg: 0 20px 48px rgba(23, 21, 19, 0.12);
}

/* Ensure global header & footer are ALWAYS visible */
.header,
footer,
.scroll-top {
    display: block !important;
}

/* Base Wrapper Scoped */
.rock-about-wrap {
    background-color: #ffffff;
    color: var(--rock-black);
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    position: relative;
    overflow: hidden;
    line-height: 1.65;
}

/* Language Widget floating */
.rock-about-wrap .about-lang-bar {
    position: absolute;
    top: 20px;
    right: 24px;
    z-index: 25;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(222, 213, 203, 0.6);
    border-radius: 20px;
    padding: 3px 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

/* ==============================================================
   1. HERO SECTION
   ============================================================== */
.rock-about-hero {
    position: relative;
    min-height: 540px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-color: var(--rock-black, #171513);
    color: #ffffff;
    padding: 100px 0 80px;
}

.rock-about-hero .about-hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    z-index: 0;
    pointer-events: none;
    transform: scale(1);
    transition: transform 10s ease-out;
}

.rock-about-hero:hover .about-hero-video {
    transform: scale(1.03);
}

.rock-about-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(23, 21, 19, 0.88) 0%, rgba(23, 21, 19, 0.65) 50%, rgba(23, 21, 19, 0.88) 100%);
    z-index: 1;
    pointer-events: none;
}

.rock-about-hero .container {
    position: relative;
    z-index: 2;
}

.rock-about-hero .hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--rock-gold);
    margin-bottom: 16px;
}

.rock-about-hero .hero-kicker::before {
    content: "";
    width: 24px;
    height: 1px;
    background: var(--rock-gold);
}

.rock-about-hero h1 {
    font-size: 44px;
    font-weight: 700;
    line-height: 1.25;
    color: #ffffff;
    letter-spacing: -0.5px;
    margin: 0 0 20px;
    text-transform: uppercase;
}

.rock-about-hero .hero-lead {
    font-size: 16px;
    line-height: 1.7;
    color: #ded5cb;
    max-width: 680px;
    margin: 0 0 32px;
}

.rock-about-hero .hero-video-box {
    margin-top: 24px;
    border-radius: var(--rock-radius-md);
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.rock-about-hero .hero-video-box iframe {
    display: block;
    width: 100%;
}

/* ==============================================================
   2. STATS BAR
   ============================================================== */
.rock-about-stats-bar {
    background: #ffffff;
    border-bottom: 1px solid var(--rock-line-light);
    box-shadow: var(--rock-shadow-sm);
    position: relative;
    z-index: 3;
    margin-top: -35px;
    border-radius: var(--rock-radius-md);
}

.rock-about-stats-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding: 24px 30px;
}

.rock-about-stat-item {
    flex: 1;
    min-width: 180px;
    text-align: center;
    padding: 12px 16px;
    position: relative;
}

.rock-about-stat-item:not(:last-child)::after {
    content: "";
    position: absolute;
    right: 0;
    top: 20%;
    height: 60%;
    width: 1px;
    background: var(--rock-line-light);
}

.rock-about-stat-item .stat-num {
    display: block;
    font-size: 32px;
    font-weight: 800;
    line-height: 1.1;
    color: var(--rock-accent);
    margin-bottom: 4px;
    letter-spacing: -0.5px;
}

.rock-about-stat-item .stat-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--rock-light-gray);
}

/* ==============================================================
   3. SECTION HEADERS & GENERAL STYLES
   ============================================================== */
.about-section {
    padding: 80px 0;
    position: relative;
}

.about-section.alt-bg {
    background-color: var(--rock-cream);
    border-top: 1px solid var(--rock-line-light);
    border-bottom: 1px solid var(--rock-line-light);
}

.about-section-head {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 50px;
}

.about-section-head.left-aligned {
    text-align: left;
    margin: 0 0 32px;
}

.about-kicker {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--rock-accent);
    margin-bottom: 10px;
    position: relative;
}

.about-section-head h2 {
    font-size: 30px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--rock-black);
    margin: 0 0 14px;
    text-transform: uppercase;
    letter-spacing: 0.2px;
}

.about-section-head p.lead {
    font-size: 15px;
    line-height: 1.7;
    color: var(--rock-gray);
    margin: 0;
}

.about-divider {
    width: 50px;
    height: 2px;
    background: var(--rock-accent);
    margin: 16px auto 20px;
}

.about-section-head.left-aligned .about-divider {
    margin: 16px 0 20px;
}

/* ==============================================================
   4. BRAND STORY SECTION
   ============================================================== */
.about-story-box {
    background: #ffffff;
    border: 1px solid var(--rock-line);
    border-radius: var(--rock-radius-md);
    padding: 40px;
    box-shadow: var(--rock-shadow-sm);
}

.about-story-text p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--rock-gray);
    margin-bottom: 20px;
    text-align: justify;
}

.about-story-text p:last-child {
    margin-bottom: 0;
}

.about-pillars-list {
    margin-top: 24px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.about-pillar-badge {
    background: var(--rock-cream);
    border: 1px solid var(--rock-line-light);
    border-radius: var(--rock-radius-sm);
    padding: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.about-pillar-badge:hover {
    border-color: var(--rock-accent);
    transform: translateY(-2px);
    box-shadow: var(--rock-shadow-sm);
}

.about-pillar-badge i {
    font-size: 22px;
    color: var(--rock-accent);
    margin-bottom: 8px;
    display: inline-block;
}

.about-pillar-badge span {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--rock-black);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==============================================================
   5. VISION, MISSION, VALUES (CORE FEATURES)
   ============================================================== */
.about-values-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.about-value-card {
    background: #ffffff;
    border: 1px solid var(--rock-line-light);
    border-radius: var(--rock-radius-md);
    padding: 28px;
    box-shadow: var(--rock-shadow-sm);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.about-value-card:hover {
    border-color: var(--rock-accent);
    box-shadow: var(--rock-shadow-md);
    transform: translateY(-3px);
}

.about-value-card .card-top {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.about-value-card .card-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--rock-cream);
    border: 1px solid var(--rock-line);
    color: var(--rock-accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.about-value-card:hover .card-icon {
    background: var(--rock-accent);
    color: #ffffff;
    border-color: var(--rock-accent);
}

.about-value-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
    color: var(--rock-black);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.about-value-card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--rock-gray);
    margin: 0;
    text-align: justify;
}

.about-value-card .numbered-list {
    margin: 0;
    padding-left: 0;
    list-style: none;
}

.about-value-card .numbered-list li {
    font-size: 14px;
    line-height: 1.8;
    color: var(--rock-gray);
    position: relative;
    padding-left: 24px;
    margin-bottom: 6px;
}

.about-value-card .numbered-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--rock-accent);
    font-weight: bold;
}

.about-visual-banner {
    border-radius: var(--rock-radius-md);
    overflow: hidden;
    box-shadow: var(--rock-shadow-md);
    border: 1px solid var(--rock-line);
    margin-top: 36px;
}

.about-visual-banner img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s ease;
}

.about-visual-banner:hover img {
    transform: scale(1.02);
}

/* ==============================================================
   6. INFRA.MARKET ECOSYSTEM
   ============================================================== */
.about-infra-box {
    background: linear-gradient(135deg, #201c18 0%, #171513 100%);
    color: #ffffff;
    border-radius: var(--rock-radius-lg);
    padding: 50px 45px;
    box-shadow: var(--rock-shadow-lg);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(222, 213, 203, 0.15);
}

.about-infra-box::before {
    content: "";
    position: absolute;
    top: -50px;
    right: -50px;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(198, 156, 109, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.about-infra-box .infra-kicker {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--rock-gold);
    margin-bottom: 12px;
    display: inline-block;
}

.about-infra-box h2 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
    color: #ffffff;
    margin: 0 0 18px;
    text-transform: uppercase;
}

.about-infra-box h2 span {
    color: var(--rock-gold);
}

.about-infra-box p {
    font-size: 14px;
    line-height: 1.8;
    color: #ded5cb;
    margin-bottom: 30px;
    text-align: justify;
}

.about-infra-badges-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    border-top: 1px solid rgba(222, 213, 203, 0.15);
    padding-top: 28px;
}

.about-infra-badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--rock-radius-sm);
    padding: 16px 12px;
    text-align: center;
}

.about-infra-badge strong {
    display: block;
    font-size: 22px;
    font-weight: 800;
    color: var(--rock-gold);
    margin-bottom: 2px;
}

.about-infra-badge small {
    font-size: 11px;
    color: #c5bcb2;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==============================================================
   7. SPLIT SHOWCASE (GREEN ENERGY & TECHNOLOGY)
   ============================================================== */
.about-showcase-row {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-bottom: 60px;
}

.about-showcase-row:last-child {
    margin-bottom: 0;
}

.about-showcase-row.reverse {
    flex-direction: row-reverse;
}

.about-showcase-col {
    flex: 1;
}

.about-showcase-card {
    background: #ffffff;
    border: 1px solid var(--rock-line);
    border-radius: var(--rock-radius-md);
    padding: 36px;
    box-shadow: var(--rock-shadow-sm);
}

.about-showcase-card h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--rock-black);
    margin: 0 0 8px;
    text-transform: uppercase;
}

.about-showcase-card .subheading {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--rock-accent);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.about-showcase-card p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--rock-gray);
    margin-bottom: 20px;
    text-align: justify;
}

.about-showcase-img {
    border-radius: var(--rock-radius-md);
    overflow: hidden;
    box-shadow: var(--rock-shadow-md);
    border: 1px solid var(--rock-line);
    position: relative;
}

.about-showcase-img img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.about-showcase-img:hover img {
    transform: scale(1.02);
}

.about-mini-banner {
    margin-top: 18px;
    border-radius: var(--rock-radius-sm);
    overflow: hidden;
    border: 1px solid var(--rock-line-light);
}

.about-mini-banner img {
    width: 100%;
    height: auto;
    display: block;
}

/* ==============================================================
   8. CTA SECTION
   ============================================================== */
.about-cta-section {
    background: var(--rock-cream);
    border-top: 1px solid var(--rock-line);
    padding: 60px 0;
    text-align: center;
}

.about-cta-box {
    max-width: 720px;
    margin: 0 auto;
}

.about-cta-box h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--rock-black);
    text-transform: uppercase;
    margin: 0 0 12px;
}

.about-cta-box p {
    font-size: 14px;
    color: var(--rock-gray);
    margin-bottom: 24px;
}

.about-cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-rock {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--rock-accent);
    color: #ffffff !important;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 12px 24px;
    border-radius: var(--rock-radius-sm);
    text-decoration: none;
    border: 1px solid var(--rock-accent);
    transition: all 0.3s ease;
}

.btn-rock:hover {
    background: var(--rock-accent-hover);
    border-color: var(--rock-accent-hover);
    color: #ffffff !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(145, 97, 71, 0.25);
}

.btn-rock.outline {
    background: transparent;
    color: var(--rock-black) !important;
    border-color: var(--rock-line);
}

.btn-rock.outline:hover {
    background: var(--rock-black);
    color: #ffffff !important;
    border-color: var(--rock-black);
    box-shadow: var(--rock-shadow-sm);
}

/* ==============================================================
   9. RESPONSIVE DESIGN
   ============================================================== */
@media (max-width: 991px) {
    .rock-about-hero {
        min-height: 420px;
        padding: 70px 0 60px;
    }

    .rock-about-hero h1 {
        font-size: 32px;
    }

    .about-values-grid {
        grid-template-columns: 1fr;
    }

    .about-showcase-row {
        flex-direction: column !important;
        gap: 30px;
    }

    .about-infra-badges-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-pillars-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 767px) {
    .rock-about-hero {
        padding: 60px 0 50px;
    }

    .rock-about-hero h1 {
        font-size: 26px;
    }

    .rock-about-hero .hero-lead {
        font-size: 14px;
    }

    .rock-about-stats-bar {
        margin-top: -20px;
    }

    .rock-about-stat-item {
        min-width: 50%;
        padding: 10px 8px;
    }

    .rock-about-stat-item .stat-num {
        font-size: 24px;
    }

    .about-section {
        padding: 50px 0;
    }

    .about-section-head h2 {
        font-size: 24px;
    }

    .about-story-box,
    .about-infra-box,
    .about-showcase-card {
        padding: 24px 20px;
    }

    .about-infra-box h2 {
        font-size: 22px;
    }

    .about-infra-badges-grid {
        grid-template-columns: 1fr;
    }

    .about-cta-actions {
        flex-direction: column;
    }

    .about-cta-actions .btn-rock {
        width: 100%;
        justify-content: center;
    }
}