/* ==========================================================================
   3D INTRODUCTION TEMPLATE STYLESHEET - DAI DUONG GLASS
   Aesthetic: Dark Modern Luxury, Apple & High-End Showroom Style
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,400&family=Inter:wght@300;400;500;600&display=swap');

:root {
    --dg-bg-dark: #122640;
    --dg-gold: #C8A96A;
    --dg-gold-rgb: 200, 169, 106;
    --dg-text-light: #ffffff;
    --dg-text-muted: #8a8a93;
    --dg-glass-bg: rgba(10, 10, 12, 0.6);
    --dg-glass-border: rgba(255, 255, 255, 0.08);
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Inter', sans-serif;
}

/* Reset nền tối cinematic cho trang */
.dg-intro-3d-template {
    background-color: var(--dg-bg-dark) !important;
    color: var(--dg-text-light) !important;
    font-family: var(--font-sans);
    margin: 0;
    padding: 0;
    overflow-x: hidden !important;
}

/* Ẩn thanh cuộn mặc định của trình duyệt để Lenis cuộn mượt */
html.lenis {
    height: auto;
}
.lenis-smooth {
    scroll-behavior: auto !important;
}
.lenis-smooth [data-lenis-prevent] {
    overscroll-behavior: contain;
}
.lenis-stopped {
    overflow: hidden;
}

/* Font chữ mặc định cho headings */
.dg-intro-3d-template h1,
.dg-intro-3d-template h2,
.dg-intro-3d-template h3,
.dg-intro-3d-template h4 {
    font-family: var(--font-serif) !important;
    font-weight: 300;
    color: var(--dg-text-light);
    letter-spacing: 0.5px;
}

/* Typography & Helpers */
.gold-text {
    color: var(--dg-gold) !important;
}
.text-center {
    text-align: center;
}
.dg-badge {
    display: inline-block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--dg-gold);
    border: 1px solid rgba(var(--dg-gold-rgb), 0.3);
    padding: 6px 16px;
    border-radius: 30px;
    margin-bottom: 20px;
    font-family: var(--font-sans);
    font-weight: 500;
    background: rgba(var(--dg-gold-rgb), 0.05);
    backdrop-filter: blur(5px);
}

/* Container */
.dg-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
    position: relative;
    z-index: 5;
}

/* Nút Luxury */
.dg-btn-luxury {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 40px;
    color: var(--dg-text-light) !important;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    cursor: pointer;
}

.dg-btn-luxury:hover {
    background: var(--dg-text-light);
    color: var(--dg-bg-dark) !important;
    border-color: var(--dg-text-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
}

.dg-btn-gold {
    border-color: var(--dg-gold);
    color: var(--dg-gold) !important;
}

.dg-btn-gold:hover {
    background: var(--dg-gold);
    color: var(--dg-bg-dark) !important;
    border-color: var(--dg-gold);
    box-shadow: 0 10px 25px rgba(var(--dg-gold-rgb), 0.3);
}

/* ==========================================================================
   WebGL Canvas Nền Cố Định
   ========================================================================== */
.dg-3d-canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: auto; /* Bật chuột tương tác WebGL */
    background-color: var(--dg-bg-dark);
}

#dg-3d-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* ==========================================================================
   Scroll Content Layout (Đè lên Canvas)
   ========================================================================== */
.dg-3d-scroll-content {
    position: relative;
    z-index: 2;
    pointer-events: none; /* Rất quan trọng: cho phép click xuyên qua vào Canvas */
}

/* Cho phép chuột tương tác với tất cả thẻ UI */
.dg-3d-scroll-content .dg-container,
.dg-3d-scroll-content a,
.dg-3d-scroll-content button,
.dg-3d-scroll-content .dg-uni-card,
.dg-3d-scroll-content .dg-proj-tab,
.dg-3d-scroll-content .dg-step-node {
    pointer-events: auto;
}

/* Cấu trúc phần chung */
.dg-3d-sec {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 0;
    box-sizing: border-box;
}

.dg-sec-header {
    margin-bottom: 60px;
}

.dg-sec-header h2 {
    font-size: 3.5rem;
    margin: 10px 0 20px;
    font-style: italic;
}

.dg-sec-header p {
    color: var(--dg-text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
    font-weight: 300;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.dg-3d-hero {
    height: 100vh;
    display: flex;
    align-items: center;
    padding: 0;
}

.dg-hero-text {
    max-width: 750px;
    margin-top: 5vh;
}

.dg-hero-text h1 {
    font-size: 5rem;
    line-height: 1.1;
    margin: 10px 0;
}

.dg-hero-text h2 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin: 0 0 25px;
    font-style: italic;
}

.dg-hero-text .desc-text {
    font-size: 1.2rem;
    color: var(--dg-text-muted);
    max-width: 500px;
    line-height: 1.6;
    margin: 0;
    font-weight: 300;
}

/* Nút cuộn xuống */
.dg-scroll-down {
    position: absolute;
    bottom: 50px;
    left: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    opacity: 0.8;
}

.dg-scroll-down .scroll-txt {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--dg-text-muted);
}

.dg-scroll-down .scroll-arrow {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--dg-gold) 50%, transparent 50%);
    background-size: 100% 200%;
    animation: scrollLine 2s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}

@keyframes scrollLine {
    0% { background-position: 0 100%; }
    50% { background-position: 0 0; }
    100% { background-position: 0 -100%; }
}

/* ==========================================================================
   MIRROR UNIVERSE
   ========================================================================== */
.dg-3d-universe {
    background: linear-gradient(to bottom, transparent, rgba(18, 38, 64, 0.8) 20%, rgba(18, 38, 64, 0.8) 80%, transparent);
    padding: 120px 0;
}

.dg-universe-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.dg-uni-card {
    background: var(--dg-glass-bg);
    border: 1px solid var(--dg-glass-border);
    border-radius: 4px;
    padding: 30px 24px;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.dg-uni-card:hover {
    border-color: rgba(var(--dg-gold-rgb), 0.5);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 
                inset 0 0 20px rgba(var(--dg-gold-rgb), 0.05);
}

.dg-uni-card.active {
    border-color: var(--dg-gold);
    background: rgba(var(--dg-gold-rgb), 0.08);
}

.dg-uni-card .card-num {
    font-size: 0.8rem;
    font-family: var(--font-sans);
    color: var(--dg-gold);
    display: block;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.dg-uni-card h3 {
    font-size: 1.5rem;
    margin: 0 0 10px;
    font-weight: 400;
}

.dg-uni-card p {
    color: var(--dg-text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
    margin: 0;
}

/* ==========================================================================
   SHOWCASE TEMPLATE SEC (SPLIT VIEWPORTS)
   ========================================================================== */
.dg-showcase-sec {
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.dg-showcase-split {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: center;
    width: 100%;
}

.dg-showcase-split.invert {
    grid-template-columns: 1.2fr 1fr;
}

.dg-showcase-info {
    max-width: 500px;
}

.dg-showcase-info h2 {
    font-size: 3.8rem;
    margin: 10px 0 20px;
    font-style: italic;
}

.dg-showcase-info .lead {
    font-size: 1.15rem;
    color: var(--dg-text-light);
    line-height: 1.6;
    margin-bottom: 20px;
    font-weight: 400;
}

.dg-showcase-info p {
    color: var(--dg-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 30px;
}

.dg-showcase-placeholder {
    height: 70vh;
    width: 100%;
    /* Nhìn xuyên thấu vào Canvas 3D chạy dưới nền */
    pointer-events: none;
}

.interactive-prompt {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 10px 20px;
    border-radius: 30px;
}

.interactive-prompt .txt {
    font-size: 0.8rem;
    color: var(--dg-gold);
    letter-spacing: 1px;
}

/* Micro-anim cho bàn tay cảm ứng */
.icon-touch {
    width: 12px;
    height: 12px;
    background: var(--dg-gold);
    border-radius: 50%;
    position: relative;
    box-shadow: 0 0 10px var(--dg-gold);
}
.icon-touch::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border: 1px solid var(--dg-gold);
    border-radius: 50%;
    left: 0;
    top: 0;
    transform: scale(1);
    opacity: 1;
    animation: touchPulse 1.5s infinite;
}
@keyframes touchPulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(2.5); opacity: 0; }
}

/* ==========================================================================
   PORTFOLIO REAL PROJECTS
   ========================================================================== */
.dg-3d-projects {
    background: linear-gradient(to bottom, transparent, rgba(18, 38, 64, 0.9) 20%);
    min-height: 100vh;
}

.dg-projects-interactive {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    margin-top: 40px;
    align-items: center;
}

.dg-project-tabs {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.dg-proj-tab {
    background: var(--dg-glass-bg);
    border: 1px solid var(--dg-glass-border);
    padding: 20px 24px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.dg-proj-tab:hover {
    border-color: rgba(var(--dg-gold-rgb), 0.5);
    background: rgba(255, 255, 255, 0.02);
}

.dg-proj-tab.active {
    border-color: var(--dg-gold);
    background: rgba(var(--dg-gold-rgb), 0.08);
}

.dg-proj-tab h4 {
    font-size: 1.3rem;
    margin: 0 0 5px;
    font-family: var(--font-sans) !important;
    font-weight: 500;
}

.dg-proj-tab p {
    color: var(--dg-text-muted);
    font-size: 0.8rem;
    margin: 0;
    line-height: 1.4;
}

.dg-project-visual {
    position: relative;
    height: 500px;
    pointer-events: none; /* Dành chỗ cho map 3D hiển thị từ Canvas */
}

/* Overlay card bay bổng khi tương tác trên map */
.dg-map-overlay-card {
    position: absolute;
    bottom: 40px;
    right: 0;
    background: rgba(10, 10, 12, 0.85);
    border: 1px solid var(--dg-gold);
    border-radius: 4px;
    padding: 24px;
    max-width: 320px;
    backdrop-filter: blur(20px);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 20px 40px rgba(0,0,0,0.8);
    pointer-events: auto;
}

.dg-map-overlay-card.show {
    opacity: 1;
    transform: translateY(0);
}

.dg-map-overlay-card .tag {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--dg-gold);
    font-weight: 500;
    display: block;
    margin-bottom: 8px;
}

.dg-map-overlay-card h3 {
    font-size: 1.4rem;
    margin: 0 0 10px;
}

.dg-map-overlay-card p {
    font-size: 0.85rem;
    color: var(--dg-text-muted);
    margin: 4px 0;
    line-height: 1.5;
}

/* ==========================================================================
   FACTORY TIMELINE STEPPER
   ========================================================================== */
.dg-3d-factory {
    padding: 120px 0;
}

.dg-factory-stepper {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-top: 60px;
    gap: 15px;
}

/* Thanh nối nằm ngang */
.dg-factory-stepper::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 40px;
    right: 40px;
    height: 1px;
    background: rgba(255, 255, 255, 0.08);
    z-index: 1;
}

/* Thanh tiến độ chạy ngầm */
.dg-factory-stepper-progress {
    position: absolute;
    top: 30px;
    left: 40px;
    width: 0%;
    height: 1px;
    background: var(--dg-gold);
    z-index: 2;
    transition: width 0.5s ease;
    box-shadow: 0 0 8px var(--dg-gold);
}

.dg-step-node {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 3;
    cursor: pointer;
}

.dg-step-node .step-num {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #0d0d10;
    border: 1px solid var(--dg-glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-family: var(--font-sans);
    font-weight: 600;
    color: var(--dg-text-muted);
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    margin-bottom: 20px;
}

.dg-step-node .step-label {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--dg-text-light);
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.dg-step-node .step-desc {
    font-size: 0.75rem;
    color: var(--dg-text-muted);
    line-height: 1.5;
    max-width: 140px;
    margin: 0 auto;
    opacity: 0.8;
}

/* Động thái Active */
.dg-step-node.active .step-num {
    border-color: var(--dg-gold);
    color: var(--dg-gold);
    box-shadow: 0 0 20px rgba(var(--dg-gold-rgb), 0.4),
                inset 0 0 10px rgba(var(--dg-gold-rgb), 0.1);
    background: rgba(var(--dg-gold-rgb), 0.05);
}

.dg-step-node.active .step-label {
    color: var(--dg-gold);
}

/* ==========================================================================
   FINAL CTA SECTION
   ========================================================================== */
.dg-3d-cta {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(to top, rgba(18, 38, 64, 1) 50%, transparent);
    padding: 100px 0;
}

.dg-cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.dg-cta-content h2 {
    font-size: 4rem;
    line-height: 1.1;
    margin: 10px 0 20px;
}

.dg-cta-content p {
    font-size: 1.1rem;
    color: var(--dg-text-muted);
    line-height: 1.6;
    margin-bottom: 40px;
    font-weight: 300;
}

.dg-cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.dg-cta-footer {
    margin-top: 100px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 30px;
}

.dg-cta-footer p {
    font-size: 0.75rem;
    color: var(--dg-text-muted);
    letter-spacing: 1px;
}

/* Đưa footer gốc của theme lên trên WebGL canvas */
.footer-wrapper, #footer, .absolute-footer {
    position: relative !important;
    z-index: 10 !important;
    background-color: var(--dg-bg-dark) !important;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MOBILE ADAPTATION)
   ========================================================================== */

@media (max-width: 1024px) {
    .dg-container {
        padding: 0 30px;
    }
    
    .dg-hero-text h1 { font-size: 4rem; }
    .dg-hero-text h2 { font-size: 2.8rem; }
    
    .dg-universe-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .dg-showcase-split, 
    .dg-showcase-split.invert {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .dg-showcase-info {
        max-width: 100%;
        margin: 0 auto;
        order: 1; /* Đưa chữ lên trước trên di động */
    }
    
    .dg-showcase-placeholder {
        height: 40vh;
        order: 2;
    }
    
    .dg-projects-interactive {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .dg-project-visual {
        height: 350px;
    }
    
    .dg-factory-stepper {
        flex-direction: column;
        gap: 30px;
        padding-left: 30px;
    }
    
    .dg-factory-stepper::before {
        left: 30px;
        top: 0;
        bottom: 0;
        width: 1px;
        height: 100%;
    }
    
    .dg-factory-stepper-progress {
        left: 30px;
        top: 0;
        width: 1px;
        height: 0%;
    }
    
    .dg-step-node {
        flex-direction: row;
        text-align: left;
        align-items: flex-start;
        gap: 20px;
    }
    
    .dg-step-node .step-num {
        margin-bottom: 0;
        width: 45px;
        height: 45px;
        flex-shrink: 0;
        font-size: 0.85rem;
    }
    
    .dg-step-node .step-desc {
        margin: 5px 0 0;
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .dg-3d-sec {
        padding: 80px 0;
    }
    
    .dg-hero-text h1 { font-size: 3rem; }
    .dg-hero-text h2 { font-size: 2.2rem; }
    .dg-hero-text .desc-text { font-size: 1rem; }
    
    .dg-sec-header h2 { font-size: 2.5rem; }
    
    .dg-universe-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .dg-showcase-info h2 { font-size: 2.8rem; }
    
    .dg-cta-content h2 { font-size: 2.8rem; }
    
    .dg-cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .dg-btn-luxury {
        width: 100%;
        max-width: 300px;
    }
}