/* Design System & Base Style - Beige & Brown Theme */
:root {
    --bg-dark: #f8f6f2; /* Soft Cozy Warm Cream */
    --bg-card: #ffffff; /* Crisp White Cards */
    --bg-card-hover: #faf9f6;
    --color-primary: #8e7a66; /* Elegant Beige Brown */
    --color-primary-dark: #5c4e40;
    --color-primary-light: #bdae9f;
    --color-text-main: #2e2824; /* Deep Espresso */
    --color-text-muted: #756a60; /* Warm Grayish Brown */
    --color-accent: #c46851; /* Soft Rust / Terracotta */
    --border-color: rgba(142, 122, 102, 0.18);
    --border-color-focus: rgba(142, 122, 102, 0.5);
    --font-title: 'Cactus Classical Serif', serif;
    --font-body: 'Inter', sans-serif;
    --transition-fast: 0.65s cubic-bezier(0.22, 1, 0.36, 1);
    --transition-smooth: 1.25s cubic-bezier(0.22, 1, 0.36, 1);
    --border-radius: 12px;
    --container-width: 1200px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--color-text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Utilities */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.text-center {
    text-align: center;
}

.gradient-text {
    background: linear-gradient(135deg, #ffffff, #faf0e6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.icon-sm {
    width: 18px;
    height: 18px;
}

.icon-gold {
    color: var(--color-primary);
}

.w-full {
    width: 100%;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Buttons and CTA Shimmer */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-title);
    font-weight: 600;
    padding: 12px 24px;
    border-radius: 8px;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    outline: none;
    gap: 8px;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
    border-radius: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(142, 122, 102, 0.25);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(142, 122, 102, 0.35);
}

.btn-secondary {
    background: rgba(142, 122, 102, 0.08);
    color: var(--color-text-main);
    border: 1px solid rgba(142, 122, 102, 0.12);
}

.btn-secondary:hover {
    background: rgba(142, 122, 102, 0.15);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary-dark);
    border: 1px solid var(--color-primary);
}

.btn-outline:hover {
    background: rgba(142, 122, 102, 0.08);
    color: var(--color-primary-dark);
}

/* Shimmer Effect Animation */
.btn-cta-shimmer {
    position: relative;
    overflow: hidden;
}

.btn-cta-shimmer::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 30%;
    height: 200%;
    background: rgba(255, 255, 255, 0.25);
    transform: rotate(30deg);
    transition: none;
    animation: shimmer-effect 3.5s infinite ease-in-out;
}

@keyframes shimmer-effect {
    0% { left: -60%; }
    15% { left: 140%; }
    100% { left: 140%; }
}

.icon-end {
    margin-left: 2px;
}

.icon-start {
    margin-right: 2px;
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(248, 246, 242, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(142, 122, 102, 0.1);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo-container-link {
    display: inline-flex;
    align-items: center;
}

.logo-img {
    height: 60px;
    width: auto;
    object-fit: contain;
    mix-blend-mode: multiply;
    transition: transform var(--transition-fast);
}

.logo-img:hover {
    transform: scale(1.03);
}

.header-actions {
    display: flex;
    align-items: center;
}

main {
    padding-top: 80px; /* Offset the sticky navigation bar height */
}

.process-static-img:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.hero-container.full-center {
    position: relative;
    z-index: 3;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.hero-content {
    max-width: 900px;
}

.hero-content h1 {
    font-family: var(--font-title);
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 32px;
    color: #ffffff;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
    text-transform: uppercase;
}

.hero-content .badge-new {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #ffffff;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    display: inline-flex;
    font-family: var(--font-title);
}

.animate-pulse {
    animation: custom-pulse 2s infinite alternate;
}

@keyframes custom-pulse {
    0% { opacity: 0.95; transform: scale(1); }
    100% { opacity: 1; transform: scale(1.02); }
}

.hero-actions-group {
    display: flex;
    justify-content: center;
}

/* Section Common Styles */
section {
    padding: 85px 0;
}

.section-header {
    max-width: 900px;
    margin: 0 auto 40px;
}

.section-tag {
    font-family: var(--font-title);
    color: var(--color-primary-dark);
    font-size: 0.78rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 700;
    display: block;
    margin-bottom: 8px;
}

.section-header h2 {
    font-family: var(--font-title);
    font-size: 2.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--color-text-main);
    text-transform: uppercase;
    letter-spacing: -0.01em;
}

.section-desc {
    color: var(--color-text-muted);
    font-size: 0.92rem;
    line-height: 1.5;
}

/* Section 2: Tabbed Gallery/Carousel Portfolio */
.styles-section {
    background-color: #f2efe9;
}

.styles-tab-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 14px;
}

.tab-btn {
    background: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--color-text-muted);
    font-family: var(--font-title);
    font-weight: 600;
    font-size: 0.88rem;
    padding: 8px 20px;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 6px rgba(111, 93, 71, 0.02);
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--color-primary-dark);
    color: #ffffff;
    border-color: var(--color-primary-dark);
    box-shadow: 0 4px 10px rgba(111, 93, 71, 0.12);
}

.styles-tab-content {
    max-width: 1000px;
    margin: 0 auto;
}

@keyframes tab-fade-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: tab-fade-in 1.2s cubic-bezier(0.25, 1, 0.3, 1) forwards;
}

.gallery-carousel {
    margin-bottom: 12px;
    overflow: hidden;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(111, 93, 71, 0.08);
}

/* Mix Grid Layout (Asymmetric Hybrid) */
.gallery-mix-grid {
    display: flex;
    flex-direction: column;
    gap: 5px;
    max-width: 1000px;
    margin: 0 auto;
}

.gallery-mix-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 5px;
}

.gallery-mix-text-card {
    background: #ffffff;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(111, 93, 71, 0.05);
    padding: 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
}

.gallery-mix-text-card .mix-title {
    font-family: var(--font-title);
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-text-main);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.gallery-mix-text-card .mix-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--color-accent);
}

.gallery-mix-text-card .mix-desc {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-main);
    margin-bottom: 16px;
    font-family: var(--font-body);
}

.gallery-mix-text-card .mix-desc-detail {
    font-size: 0.88rem;
    line-height: 1.6;
    color: var(--color-text-muted);
    margin-bottom: 24px;
    font-family: var(--font-body);
}

.gallery-mix-top.single-only {
    grid-template-columns: 1fr;
}

.gallery-mix-right-stack {
    display: grid;
    grid-template-rows: 1fr 1fr;
    gap: 5px;
}

.gallery-mix-right-stack.no-subgrid {
    grid-template-rows: 1fr;
}

.gallery-mix-right-stack.no-bottom-single {
    grid-template-rows: 1fr;
}

.gallery-mix-right-stack.no-subgrid.no-bottom-single {
    display: none !important;
}

.gallery-mix-subgrid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 5px;
    aspect-ratio: 16/9;
}

.gallery-mix-top .gallery-mix-subgrid .gallery-mix-img-item {
    aspect-ratio: auto;
}

.gallery-mix-left-main {
    aspect-ratio: auto;
    height: 100%;
}

.gallery-mix-top .gallery-mix-left-main {
    aspect-ratio: auto;
    height: 100%;
}

.gallery-mix-img-item {
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    background: #eae5db;
    cursor: pointer;
}

.gallery-mix-top .gallery-mix-img-item {
    aspect-ratio: 16/9;
}

.gallery-mix-img-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-smooth);
}

.gallery-mix-img-item img:hover {
    transform: scale(1.03);
}

.gallery-mix-bottom-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5px;
}

.gallery-mix-grid.has-3-bottom .gallery-mix-bottom-row {
    grid-template-columns: repeat(3, 1fr);
}

.gallery-mix-grid.has-2-bottom .gallery-mix-bottom-row {
    grid-template-columns: repeat(2, 1fr);
}

.gallery-mix-grid.has-1-bottom .gallery-mix-bottom-row {
    grid-template-columns: 1fr;
}

.gallery-mix-bottom-row .gallery-mix-img-item {
    aspect-ratio: 16/10;
}

/* Mobile responsive mix grid */
@media (max-width: 768px) {
    .gallery-mix-top {
        grid-template-columns: 1fr;
        gap: 5px;
    }
    
    .gallery-mix-text-card {
        padding: 24px 20px;
        align-items: center;
        text-align: center;
    }
    
    .gallery-mix-text-card .mix-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .gallery-mix-text-card .mix-title {
        font-size: 1.35rem;
        margin-bottom: 12px;
    }
    
    .gallery-mix-text-card .mix-desc {
        font-size: 0.85rem;
        margin-bottom: 10px;
    }
    
    .gallery-mix-text-card .mix-desc-detail {
        font-size: 0.8rem;
        margin-bottom: 16px;
    }
    
    .gallery-mix-left-main {
        aspect-ratio: 16/9;
        height: auto;
    }

    .gallery-mix-right-stack {
        display: grid;
        grid-template-columns: 1fr 1fr;
        grid-template-rows: none;
        gap: 5px;
    }

    .gallery-mix-right-stack.no-subgrid {
        display: none !important;
    }

    .gallery-mix-right-stack.no-bottom-single {
        grid-template-columns: 1fr;
    }
    
    .gallery-mix-right-stack .gallery-mix-subgrid {
        aspect-ratio: 1/1;
        gap: 5px;
    }
    
    .gallery-mix-right-stack .gallery-mix-subgrid .gallery-mix-img-item {
        aspect-ratio: auto;
    }
    
    .gallery-mix-right-stack .gallery-mix-img-item {
        aspect-ratio: 1/1;
    }

    .gallery-mix-right-stack.no-subgrid .gallery-mix-img-item {
        aspect-ratio: 16/9;
    }
    
    .gallery-mix-bottom-row {
        grid-template-columns: repeat(3, 1fr);
        gap: 5px;
    }

    .gallery-mix-grid.has-3-bottom .gallery-mix-bottom-row {
        grid-template-columns: repeat(3, 1fr);
    }

    .gallery-mix-grid.has-2-bottom .gallery-mix-bottom-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-mix-grid.has-1-bottom .gallery-mix-bottom-row {
        grid-template-columns: 1fr;
    }
    
    .gallery-mix-bottom-row .gallery-mix-img-item {
        aspect-ratio: 1/1;
    }

    .gallery-mix-bottom-row .gallery-mix-img-item img {
        aspect-ratio: 1/1;
        object-fit: cover;
    }

    .gallery-mix-grid.no-bottom-row {
        gap: 0;
    }
}

/* Overflow Overlay with number count */
.overflow-overlay {
    position: relative;
    cursor: pointer;
}

.overflow-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 26, 23, 0.45);
    z-index: 1;
    transition: background-color var(--transition-fast);
    border-radius: 8px;
    pointer-events: none;
}

.overflow-overlay:hover::before {
    background: rgba(30, 26, 23, 0.55);
}

.overlay-more-count {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #ffffff;
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-title);
    z-index: 2;
    pointer-events: none;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.tab-action {
    margin-top: 24px;
}

/* Responsive grid for mobile viewports */
@media (max-width: 768px) {
    .gallery-grid-layout {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 8px;
    }
    
    .gallery-grid-left .gallery-img {
        aspect-ratio: 16/10;
    }
    
    .gallery-grid-right {
        gap: 8px;
    }
    
    .overlay-more-count {
        font-size: 1.6rem;
    }
}

/* Section 3: Technical Standards Slideshow */
.tech-standards-section {
    background-color: var(--bg-dark);
    position: relative;
    background-image: radial-gradient(circle at 10% 20%, rgba(142, 122, 102, 0.03) 0%, rgba(255, 255, 255, 0) 90%);
}

.tech-category-nav {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    width: 100%;
}

.tech-category-nav-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
    gap: 8px;
    width: 100%;
}

.tech-category-select-wrapper {
    display: none;
}

.tech-cat-btn {
    flex-shrink: 0;
    background: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--color-text-muted);
    font-family: var(--font-title);
    font-weight: 600;
    font-size: 0.8rem;
    padding: 8px 14px;
    border-radius: 30px;
    cursor: pointer;
    transition: all var(--transition-smooth);
    box-shadow: 0 2px 6px rgba(46, 40, 36, 0.02);
}

.tech-cat-btn:hover,
.tech-cat-btn.active {
    background: var(--color-primary-dark);
    color: #ffffff;
    border-color: var(--color-primary-dark);
    box-shadow: 0 6px 15px rgba(92, 78, 64, 0.2);
    transform: translateY(-2px);
}

.tech-standards-layout-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 16px;
}

.tech-grid-custom .gallery-grid-left,
.tech-grid-custom .gallery-grid-item-small {
    background: #eae5db; /* Beige background to keep technical drawings fully readable */
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
}

.tech-grid-custom .tech-contain-img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* Keep it contain so technical drawings are not cropped */
    display: block;
    transition: transform var(--transition-smooth);
}

.tech-grid-custom .gallery-grid-left:hover .tech-contain-img,
.tech-grid-custom .gallery-grid-item-small:hover .tech-contain-img {
    transform: scale(1.03);
}

.tech-grid-custom .tech-grid-hover {
    position: absolute;
    inset: 0;
    background: rgba(46, 40, 36, 0.45);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    opacity: 0;
    transition: opacity 0.3s ease;
    gap: 8px;
    pointer-events: none; /* Let zoom-in click event pass through to image/container */
    z-index: 2;
}

.tech-grid-custom .gallery-grid-left:hover .tech-grid-hover,
.tech-grid-custom .gallery-grid-item-small:hover .tech-grid-hover {
    opacity: 1;
}

.tech-grid-custom .tech-grid-hover i {
    width: 24px;
    height: 24px;
    stroke-width: 2.5;
}

.tech-grid-custom .tech-grid-hover span {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}


/* Section 4: Icon & Sơ đồ quy trình 6 bước tối giản */
.process-section {
    background-color: var(--bg-dark);
    border-top: 1px solid rgba(142, 122, 102, 0.1);
}

.icon-process-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    max-width: 1200px;
    margin: 45px auto 0;
}

.process-item-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    height: 180px;
    padding: 24px;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-start;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
    box-shadow: 0 6px 20px rgba(111, 93, 71, 0.03);
}

.process-item-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 15px 35px rgba(111, 93, 71, 0.08);
    border-color: rgba(142, 122, 102, 0.4);
}

.process-card-default {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-start;
    height: 100%;
    width: 100%;
    z-index: 2;
    transition: opacity var(--transition-fast);
}

.process-step-num {
    font-family: var(--font-title);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--color-primary-light);
    line-height: 1;
}

.process-icon-box {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(142, 122, 102, 0.07);
    color: var(--color-primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 16px 0;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.process-icon-box i {
    width: 22px;
    height: 22px;
}

.process-item-card:hover .process-icon-box {
    background: var(--color-primary);
    color: #ffffff;
}

.process-item-card h4 {
    font-family: var(--font-title);
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--color-text-main);
    line-height: 1.35;
    text-align: left;
    margin-bottom: auto;
}



/* Section 5: Bộ Dự toán tự động */
.estimator-section {
    background-color: #f2efe9;
}

.estimator-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(111, 93, 71, 0.05);
}

.estimator-steps {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    border-bottom: 1px solid var(--border-color);
}

.est-step {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: rgba(142, 122, 102, 0.05);
    font-family: var(--font-title);
    font-weight: 600;
    color: var(--color-text-muted);
}

.est-step.active {
    background: transparent;
    color: var(--color-primary-dark);
}

.est-step.completed {
    color: var(--color-text-main);
}

.step-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid var(--color-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.est-step.active .step-num {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: #ffffff;
}

.est-step.completed .step-num {
    border-color: var(--color-primary-light);
    background: rgba(142, 122, 102, 0.1);
    color: var(--color-primary-dark);
}

.estimator-content {
    padding: 32px;
}

.step-pane {
    display: none;
}

.step-pane.active {
    display: block;
    animation: fade-in 0.4s ease;
}

.input-group-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 32px;
}

.input-label {
    display: block;
    font-family: var(--font-title);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text-main);
    margin-bottom: 14px;
}

/* Option Cards (Style & Gói) */
.style-cards-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.type-card, .package-card {
    cursor: pointer;
}

.type-card input, .package-card input {
    display: none;
}

.type-card .card-inner, .package-card .card-inner {
    background: rgba(142, 122, 102, 0.03);
    border: 1px solid rgba(142, 122, 102, 0.1);
    border-radius: 8px;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
    transition: all var(--transition-fast);
}

.type-card .card-inner i {
    width: 24px;
    height: 24px;
    color: var(--color-text-muted);
}

.type-card .card-inner span {
    font-family: var(--font-title);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-main);
}

.type-card input:checked + .card-inner,
.package-card input:checked + .card-inner {
    background: rgba(142, 122, 102, 0.08);
    border-color: var(--color-primary);
}

.type-card input:checked + .card-inner i {
    color: var(--color-primary-dark);
}

.package-cards-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.package-card .card-inner {
    align-items: flex-start;
    padding: 16px;
    gap: 4px;
    text-align: left;
}

.pkg-title {
    font-family: var(--font-title);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-main);
}

.pkg-price {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.step-footer {
    margin-top: 32px;
    padding-top: 18px;
    border-top: 1px solid rgba(142, 122, 102, 0.1);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Step 2 Inputs */
.input-fields-layout {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.field-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.field-info .input-label {
    margin-bottom: 0;
}

.field-val {
    font-family: var(--font-title);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.custom-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: rgba(142, 122, 102, 0.15);
    outline: none;
}

.custom-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-primary-dark);
    border: 2px solid #ffffff;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(111, 93, 71, 0.25);
    transition: transform var(--transition-fast);
}

.custom-range::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--color-text-muted);
    margin-top: 6px;
}

/* Step 3 (Results & Leads) */
.result-and-lead {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: center;
}

.result-block {
    background: rgba(142, 122, 102, 0.03);
    border: 1px dashed var(--border-color);
    padding: 24px;
    border-radius: 8px;
}

.result-block h4 {
    font-family: var(--font-title);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text-main);
}

.result-price-wrapper {
    display: flex;
    flex-direction: column;
    margin-bottom: 12px;
}

.result-price-value {
    font-family: var(--font-title);
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary-dark);
}

.result-disclaimer {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.lead-form-block h5 {
    font-family: var(--font-title);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.simple-lead-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.simple-lead-form input,
.main-contact-form input,
.main-contact-form select {
    width: 100%;
    background: #ffffff;
    border: 1px solid rgba(142, 122, 102, 0.25);
    color: var(--color-text-main);
    padding: 12px 16px;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    outline: none;
    transition: all var(--transition-fast);
}

.main-contact-form select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%238e7a66' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7' /%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 18px;
}

.simple-lead-form input:focus,
.main-contact-form input:focus,
.main-contact-form select:focus {
    border-color: var(--color-primary);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(142, 122, 102, 0.1);
}

.success-alert {
    display: none;
    align-items: flex-start;
    gap: 10px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #065f46;
    padding: 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    margin-top: 12px;
}

.success-alert i {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: #059669;
}

/* Section 6: Video Testimonials Section */
.trust-section {
    background-color: var(--bg-dark);
}

.diary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    max-width: 1000px;
    margin: 40px auto 0;
}

.diary-item {
    overflow: hidden;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 25px rgba(111, 93, 71, 0.05);
    background: #ffffff;
}

.diary-img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    display: block;
    cursor: pointer;
    transition: transform var(--transition-smooth);
}

.diary-img:hover {
    transform: scale(1.04);
}

/* Final Lead Capture Section & Urgency */
.lead-section {
    position: relative;
    background-color: #f2efe9;
    overflow: hidden;
}

.lead-container {
    max-width: 800px;
}

.lead-content {
    text-align: center;
}

.urgency-banner {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(196, 104, 81, 0.1);
    border: 1px solid rgba(196, 104, 81, 0.25);
    color: #a6432c;
    padding: 10px 16px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    text-align: left;
    margin-bottom: 30px;
}

.urgency-banner i {
    color: var(--color-accent);
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.lead-content h2 {
    font-family: var(--font-title);
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--color-text-main);
    white-space: nowrap;
    text-transform: uppercase;
}

.lead-content p {
    color: var(--color-text-muted);
    font-size: 1rem;
    margin-bottom: 32px;
}

.main-contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: 0 15px 30px rgba(111, 93, 71, 0.08);
}

.form-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.form-grid-4 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .form-grid-4 {
        grid-template-columns: 1fr !important;
    }
    .w-full-grid-mobile {
        grid-column: span 1 / span 1 !important;
    }
}

.w-full-grid-mobile {
    grid-column: span 2;
}

.position-field {
    position: relative;
    display: flex;
    align-items: center;
}

.position-field input {
    padding-right: 46px !important;
}

.btn-detect-location {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all var(--transition-fast);
    z-index: 5;
}

.btn-detect-location:hover {
    background: rgba(142, 122, 102, 0.1);
    color: var(--color-primary-dark);
}

.btn-detect-location i {
    width: 18px;
    height: 18px;
    pointer-events: none;
}

/* Footer Section - Grounded Dark Contrast */
.footer {
    background: #231e1a; /* Dark Espresso Contrast */
    color: #e5dfd9;
    padding: 50px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    align-items: start;
}

.brand-desc {
    font-size: 0.85rem;
    color: #a69c94;
    margin-top: 10px;
}

.info-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.info-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.85rem;
    color: #a69c94;
}

.info-list li i,
.info-list li svg {
    width: 18px;
    height: 18px;
    color: var(--color-primary-light);
    flex-shrink: 0;
    margin-top: 2px;
}

.info-list a {
    color: #ffffff;
}

.info-list a:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    font-size: 0.8rem;
    color: #8c8177;
}

.fb-container {
    display: flex;
    justify-content: center;
}

/* Image/Video Modal Popup Styles */
.image-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(30, 26, 23, 0.95);
    backdrop-filter: blur(8px);
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.image-modal.show {
    display: flex;
    opacity: 1;
}

.modal-content-wrapper {
    max-width: 85%;
    max-height: 80%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.modal-image {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    animation: zoom-in-anim 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}



.modal-caption {
    font-family: var(--font-title);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary-light);
    text-align: center;
    max-width: 600px;
}

.modal-close {
    position: absolute;
    top: 24px;
    right: 32px;
    color: #a69c94;
    font-size: 2.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--color-primary-light);
}

.modal-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.4);
    color: #ffffff;
    border: none;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10000;
    transition: background 0.3s ease, transform 0.3s ease, opacity 0.3s ease;
    user-select: none;
}

.modal-arrow:hover {
    background: rgba(142, 122, 102, 0.8);
    color: #ffffff;
    transform: translateY(-50%) scale(1.1);
}

.prev-arrow {
    left: 40px;
}

.next-arrow {
    right: 40px;
}

@media (max-width: 992px) {
    .modal-arrow {
        width: 50px;
        height: 50px;
        font-size: 2.2rem;
    }
    .prev-arrow {
        left: 20px;
    }
    .next-arrow {
        right: 20px;
    }
}

@media (max-width: 576px) {
    .modal-arrow {
        width: 40px;
        height: 40px;
        font-size: 1.8rem;
    }
    .prev-arrow {
        left: 10px;
    }
    .next-arrow {
        right: 10px;
    }
}

/* Footer Logo adjustments */
.footer .logo-container-link {
    background: #ffffff;
    padding: 8px 14px;
    border-radius: 6px;
    display: inline-flex;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.footer-logo-img {
    height: 44px;
    width: auto;
    object-fit: contain;
    mix-blend-mode: normal;
}

@keyframes zoom-in-anim {
    from { transform: scale(0.97); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* Responsiveness */
@media (max-width: 1024px) {
    .section-header h2,
    .lead-content h2 {
        white-space: normal;
        font-size: 1.8rem;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .styles-tab-nav {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .tab-btn {
        width: 100%;
        max-width: 300px;
    }

    .carousel-inner {
        grid-template-columns: 1fr;
    }

    .before-after-slider {
        height: 380px;
    }

    .icon-process-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        margin: 35px auto 0;
    }

    .process-hover-preview {
        display: none !important;
    }

    .tech-standards-track {
        gap: 20px;
    }
    .tech-grid-item {
        flex: 0 0 calc((100% - 20px) / 2);
    }

    .input-group-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .result-and-lead {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .diary-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .form-grid-3 {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .form-grid-4 {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    section {
        padding: 22px 0;
    }

    .section-header {
        margin-bottom: 10px;
    }

    .section-header h2 {
        font-size: 1.28rem !important;
    }

    .section-header p.section-desc {
        font-size: 0.78rem !important;
        margin-top: 4px !important;
        margin-bottom: 0 !important;
    }

    .header-container {
        height: 56px;
    }

    .logo-img {
        height: 36px;
    }

    .btn {
        padding: 9px 18px !important;
        font-weight: 600 !important;
        font-size: 0.8rem !important;
    }

    .btn-lg {
        padding: 11px 22px !important;
        font-size: 0.88rem !important;
    }

    .btn-phone {
        padding: 5px 10px !important;
        font-size: 0.7rem !important;
        border-radius: 5px !important;
    }

    .btn-phone i {
        width: 12px !important;
        height: 12px !important;
    }

    .hero-section {
        min-height: 65vh !important;
    }

    .hero-content h1 {
        font-size: 1.45rem;
    }

    .hero-content p {
        font-size: 0.8rem !important;
        margin-bottom: 12px !important;
        line-height: 1.35 !important;
    }



    .icon-process-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 14px 10px;
        margin: 14px auto 0;
        justify-items: center;
    }

    .process-item-card {
        height: auto;
        min-height: auto;
        background: transparent;
        border: none;
        box-shadow: none;
        padding: 0;
        align-items: center;
        overflow: visible;
    }

    .process-card-default {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0;
        width: auto;
        position: relative;
    }

    .process-step-num {
        position: absolute;
        bottom: -2px;
        right: -2px;
        width: 16px;
        height: 16px;
        border-radius: 50%;
        background: var(--color-primary-dark);
        color: #ffffff;
        font-size: 0.65rem;
        font-weight: 700;
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 10;
        border: 1.2px solid #ffffff;
        min-width: auto;
    }

    .process-icon-box {
        margin: 0;
        width: 48px;
        height: 48px;
        background: #ffffff;
        border: 1px solid var(--border-color);
        color: var(--color-primary-dark);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        box-shadow: 0 3px 8px rgba(111, 93, 71, 0.04);
    }

    .process-icon-box i {
        width: 20px;
        height: 20px;
    }

    .process-item-card h4 {
        display: none !important;
    }



    .tech-category-nav-buttons {
        display: none !important;
    }

    .tech-category-select-wrapper {
        display: block !important;
        width: 100%;
        max-width: 280px;
        margin: 0 auto 20px;
        position: relative;
    }

    .tech-category-select-wrapper::after {
        content: '▼';
        font-size: 0.65rem;
        color: var(--color-primary-dark);
        position: absolute;
        right: 16px;
        top: 50%;
        transform: translateY(-50%);
        pointer-events: none;
    }

    .tech-category-select {
        width: 100%;
        padding: 10px 36px 10px 16px;
        border-radius: 20px;
        border: 1px solid var(--border-color);
        background-color: #ffffff;
        color: var(--color-text-main);
        font-family: var(--font-title);
        font-weight: 700;
        font-size: 0.82rem;
        cursor: pointer;
        box-shadow: 0 2px 6px rgba(111, 93, 71, 0.05);
        outline: none;
        appearance: none;
        -webkit-appearance: none;
        -moz-appearance: none;
    }

    .tech-standards-slider-wrapper {
        padding: 0 10px;
    }
    .tech-standards-viewport {
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
    }
    .tech-standards-track {
        gap: 16px;
    }
    .tech-grid-item {
        flex: 0 0 100%;
        scroll-snap-align: start;
    }
    .tech-slider-arrow {
        display: none;
    }



    .before-after-slider {
        height: 280px;
    }

    .estimator-steps {
        grid-template-columns: 1fr;
    }

    .est-step {
        padding: 12px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .estimator-content {
        padding: 20px;
    }

    .type-cards-grid {
        grid-template-columns: 1fr;
    }

    .main-contact-form {
        padding: 16px;
    }

    .urgency-banner {
        padding: 6px 12px !important;
        font-size: 0.72rem !important;
        margin-bottom: 12px !important;
        line-height: 1.35 !important;
    }

    .lead-content h2 {
        font-size: 1.28rem !important;
        margin-bottom: 8px !important;
    }

    .lead-content p {
        font-size: 0.78rem !important;
        margin-bottom: 16px !important;
    }

    /* Center all footer info on mobile */
    .footer {
        text-align: center;
    }

    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .footer-logo-img {
        margin: 0 auto;
    }

    .info-list {
        align-items: flex-start;
    }

    .info-list li {
        justify-content: flex-start;
        text-align: left;
    }



    .diary-grid {
        display: flex !important;
        overflow-x: auto !important;
        scroll-snap-type: x mandatory !important;
        gap: 0px !important;
        padding: 0px !important;
        grid-template-columns: none !important;
        margin: 20px auto 0;
        -webkit-overflow-scrolling: touch;
    }

    .diary-item {
        flex: 0 0 100% !important;
        width: 100% !important;
        scroll-snap-align: start !important;
        border: none !important;
        box-shadow: none !important;
        border-radius: 8px;
    }

    .diary-img {
        aspect-ratio: 4/3 !important;
    }
}

/* Sticky Bottom CTA Bar (LadiPage style) */
.sticky-cta-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: transparent;
    backdrop-filter: none;
    border-top: none;
    box-shadow: none;
    z-index: 999;
    padding: 12px 0;
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.sticky-cta-bar.show {
    transform: translateY(0);
}

.sticky-cta-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 16px;
}

.sticky-cta-text {
    color: var(--color-text-main);
    font-family: var(--font-title);
    font-size: 1rem;
    font-weight: 600;
    text-shadow: 0 1px 3px rgba(255, 255, 255, 0.9);
}

.sticky-cta-text span {
    color: var(--color-accent);
    font-weight: 700;
}

.sticky-cta-btn {
    background: var(--color-accent);
    color: #ffffff;
    font-family: var(--font-title);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 10px 24px;
    border-radius: 30px;
    border: none;
    cursor: pointer;
    letter-spacing: 0.5px;
    transition: transform 0.2s ease;
}

.sticky-cta-btn:active {
    transform: scale(0.95);
}

@keyframes sticky-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(142, 122, 102, 0.6);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(142, 122, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(142, 122, 102, 0);
    }
}

@media (max-width: 768px) {
    .sticky-cta-text {
        display: none;
    }
    .sticky-cta-container {
        justify-content: center;
        padding: 0 12px;
    }
    .sticky-cta-btn {
        width: 100%;
        text-align: center;
        padding: 12px;
        font-size: 0.95rem;
    }
}

/* Floating Action Widgets */
.floating-widgets {
    position: fixed;
    bottom: 90px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 998;
}

.floating-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.3, 1), box-shadow 0.3s ease;
    cursor: pointer;
}

.floating-btn:hover {
    transform: scale(1.1);
}

.btn-zalo {
    background: #0068ff;
}

.btn-call {
    background: #2ecc71;
    animation: float-shake 1.5s infinite;
}

@keyframes float-shake {
    0%, 100% { transform: scale(1); }
    10%, 20% { transform: scale(0.9) rotate(-3deg); }
    30%, 50%, 70%, 90% { transform: scale(1.15) rotate(3deg); }
    40%, 60%, 80% { transform: scale(1.15) rotate(-3deg); }
}

@media (max-width: 768px) {
    .floating-widgets {
        bottom: 80px;
        right: 16px;
    }
    .floating-btn {
        width: 46px;
        height: 46px;
    }
}

/* Popup Form Modal */
.popup-modal-content {
    background: #ffffff;
    border-radius: 16px;
    padding: 30px;
    max-width: 480px;
    width: 92%;
    position: relative;
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    animation: zoom-in-anim 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.popup-modal-close {
    position: absolute;
    top: 14px;
    right: 18px;
    color: var(--color-text-muted);
    font-size: 2rem;
    font-weight: 300;
    cursor: pointer;
    transition: color 0.2s;
    line-height: 1;
}

.popup-modal-close:hover {
    color: var(--color-text-main);
}

/* Ensure all images in the technical standards section show full content (object-fit: contain) to prevent cropping of text/annotations */
.tech-grid-custom .gallery-mix-img-item img {
    object-fit: contain !important;
    background-color: #eae5db;
}