/* ========================================
   HEFE - Premium Website Styles
   ======================================== */

:root {
    --color-primary: #E07B3C;
    --color-primary-dark: #C4652E;
    --color-dark: #1A1A1A;
    --color-charcoal: #3C3C3C;
    --color-gray-700: #4A4A4A;
    --color-gray-500: #787878;
    --color-gray-300: #B0B0B0;
    --color-gray-100: #F0EDEA;
    --color-cream: #F8F5F1;
    --color-white: #FFFFFF;
    --font-main: 'Noto Sans Georgian', sans-serif;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
    --shadow-xl: 0 30px 80px rgba(0,0,0,0.16);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-main);
    color: var(--color-charcoal);
    background: var(--color-white);
    line-height: 1.7;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition); }
ul { list-style: none; }

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.hidden { display: none !important; }

/* ========================================
   Section Utilities
   ======================================== */
.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--color-dark);
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--color-gray-500);
    line-height: 1.7;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    font-family: var(--font-main);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(224, 123, 60, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255,255,255,0.5);
}

.btn-outline:hover {
    background: var(--color-white);
    color: var(--color-dark);
    border-color: var(--color-white);
}

.btn-full { width: 100%; }

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.4s ease;
}

.navbar.scrolled {
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.navbar.scrolled .nav-link { color: var(--color-charcoal); }
.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active { color: var(--color-primary); }
.navbar.scrolled .nav-link-cta {
    background: var(--color-primary);
    color: var(--color-white) !important;
}
.navbar.scrolled .nav-toggle span { background: var(--color-dark); }

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo { display: flex; align-items: center; }
.logo-img {
    height: 36px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.88rem;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.nav-link:hover,
.nav-link.active { color: var(--color-white); }

.nav-link-cta {
    background: var(--color-primary);
    color: var(--color-white) !important;
    margin-left: 8px;
}

.nav-link-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ========================================
   Hero
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-slider {
    position: absolute;
    inset: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.2s ease;
}

.hero-slide.active { opacity: 1; }

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(26,26,26,0.82) 0%,
        rgba(60,60,60,0.55) 50%,
        rgba(26,26,26,0.7) 100%
    );
}

/* Fallback gradient when images not loaded */
.hero-slide:first-child {
    background-color: var(--color-charcoal);
    background-image:
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 60px,
            rgba(255,255,255,0.02) 60px,
            rgba(255,255,255,0.02) 61px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 20px,
            rgba(255,255,255,0.015) 20px,
            rgba(255,255,255,0.015) 21px
        );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    max-width: 800px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 24px;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
    background: rgba(255,255,255,0.06);
}

.hero h1 {
    font-size: clamp(2.8rem, 7vw, 5.5rem);
    font-weight: 900;
    line-height: 1.05;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    color: rgba(255,255,255,0.8);
    max-width: 560px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

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

.hero-slider-dots {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: 12px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.5);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
}

.dot.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    transform: scale(1.2);
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.5);
    font-size: 0.72rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-arrow {
    width: 2px;
    height: 30px;
    background: rgba(255,255,255,0.3);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-primary);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { top: -100%; }
    50% { top: 100%; }
    100% { top: 100%; }
}

/* ========================================
   Stats Bar
   ======================================== */
.stats-bar {
    background: var(--color-dark);
    padding: 48px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-item { color: var(--color-white); }

.stat-number {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 900;
    line-height: 1;
    display: inline;
}

.stat-plus {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 300;
    color: var(--color-primary);
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
    margin-top: 8px;
    font-weight: 400;
}

/* ========================================
   About
   ======================================== */
.about {
    padding: 120px 0;
    background: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 800;
    color: var(--color-dark);
    line-height: 1.2;
    margin-bottom: 24px;
}

.about-lead {
    font-size: 1.1rem;
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-content > p:last-of-type {
    color: var(--color-gray-500);
    margin-bottom: 40px;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.feature-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--color-cream);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.feature-icon svg { width: 22px; height: 22px; }

.feature h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 2px;
}

.feature p {
    font-size: 0.88rem;
    color: var(--color-gray-500);
}

.about-visual {
    position: relative;
}

.about-image-main {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    aspect-ratio: 4/5;
    background: var(--color-gray-100);
}

.about-image-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-image-accent {
    position: absolute;
    bottom: -30px;
    left: -40px;
    width: 200px;
    height: 200px;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    border: 3px solid var(--color-white);
    background: var(--color-gray-100);
}

.about-image-accent img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-badge {
    position: absolute;
    top: -20px;
    right: -20px;
    background: var(--color-primary);
    color: var(--color-white);
    padding: 20px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.badge-year {
    display: block;
    font-size: 1.8rem;
    font-weight: 900;
    line-height: 1;
}

.badge-text {
    display: block;
    font-size: 0.7rem;
    font-weight: 500;
    margin-top: 4px;
    line-height: 1.4;
    opacity: 0.9;
}

/* ========================================
   Products
   ======================================== */
.products {
    padding: 120px 0;
    background: var(--color-cream);
}

.products-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
}

.tab-btn {
    padding: 12px 32px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 600;
    border: 2px solid var(--color-gray-300);
    border-radius: 100px;
    background: var(--color-white);
    color: var(--color-gray-500);
    cursor: pointer;
    transition: all var(--transition);
}

.tab-btn.active,
.tab-btn:hover {
    background: var(--color-dark);
    color: var(--color-white);
    border-color: var(--color-dark);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-visual {
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    min-height: 180px;
}

.brick-preview {
    background: linear-gradient(135deg, #C4703A, #A85C2F);
    border-radius: 3px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.15), 0 4px 12px rgba(0,0,0,0.15);
    position: relative;
}

.brick-standard { width: 132px; height: 29px; }
.brick-medium { width: 132px; height: 34px; }
.brick-wide { width: 132px; height: 39px; }
.brick-medium-wide { width: 176px; height: 39px; }
.brick-long { width: 220px; height: 22px; }
/* Corner Brick Images & SVGs */
.corner-brick-img {
    display: block;
    max-width: 100%;
    max-height: 160px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 4px;
}

.product-info {
    padding: 28px 32px 32px;
}

.product-info h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.product-size {
    display: inline-block;
    padding: 8px 20px;
    background: var(--color-cream);
    border-radius: 100px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.5px;
    margin-top: 8px;
}

.product-unit {
    display: block;
    font-size: 0.8rem;
    color: var(--color-gray-500);
    margin-top: 6px;
}

.product-info p {
    font-size: 0.9rem;
    color: var(--color-gray-500);
    margin-bottom: 16px;
}

.product-details {
    display: flex;
    gap: 16px;
}

.product-details li {
    font-size: 0.8rem;
    color: var(--color-gray-500);
    padding-left: 14px;
    position: relative;
}

.product-details li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

/* ========================================
   Colors
   ======================================== */
.colors {
    padding: 120px 0;
    background: var(--color-white);
}

.colors-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.color-card {
    text-align: center;
    cursor: pointer;
    transition: transform var(--transition);
}

.color-card:hover { transform: translateY(-4px); }

.color-swatch {
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin-bottom: 12px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.color-swatch img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.color-card:hover .color-swatch {
    box-shadow: var(--shadow-md);
    transform: scale(1.05);
}

.color-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-gray-700);
}

.colors-note {
    text-align: center;
    padding: 32px;
    background: var(--color-cream);
    border-radius: var(--radius-lg);
}

.colors-note p {
    font-size: 0.9rem;
    color: var(--color-gray-500);
    margin-bottom: 20px;
}

/* ========================================
   Visualizer
   ======================================== */
.visualizer {
    padding: 100px 0;
    background: var(--color-bg);
}

.viz-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
}

.viz-tab-btn {
    padding: 10px 32px;
    border: 2px solid var(--color-primary);
    background: transparent;
    color: var(--color-primary);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.viz-tab-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
}

.viz-tab-btn:hover:not(.active) {
    background: rgba(180, 104, 50, 0.1);
}

.viz-slider-container {
    max-width: 1000px;
    margin: 0 auto 40px;
}

.viz-slider {
    position: relative;
    width: 100%;
    aspect-ratio: 12 / 7;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.12);
    cursor: col-resize;
    user-select: none;
    -webkit-user-select: none;
}

.viz-before,
.viz-after {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.viz-before img,
.viz-after img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    pointer-events: none;
}

.viz-after {
    clip-path: inset(0 0 0 50%);
    transition: clip-path 0s;
}

.viz-label {
    position: absolute;
    bottom: 20px;
    padding: 6px 16px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: 100px;
    text-transform: uppercase;
    pointer-events: none;
}

.viz-label-before {
    left: 20px;
}

.viz-label-after {
    right: 20px;
}

.viz-handle {
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transform: translateX(-50%);
    z-index: 10;
    pointer-events: none;
}

.viz-handle-line {
    flex: 1;
    width: 3px;
    background: white;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
    border-radius: 3px;
}

.viz-handle-btn {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
    flex-shrink: 0;
    margin: 6px 0;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.viz-slider:hover .viz-handle-btn,
.viz-slider.dragging .viz-handle-btn {
    transform: scale(1.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.viz-colors {
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.viz-colors-label {
    font-size: 0.9rem;
    color: var(--color-gray-500);
    margin-bottom: 16px;
    font-weight: 500;
}

.viz-swatches {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 16px;
}

.viz-swatch {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    overflow: hidden;
    border: 3px solid transparent;
    cursor: pointer;
    padding: 0;
    background: none;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.viz-swatch img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.viz-swatch.active {
    border-color: var(--color-primary);
    transform: scale(1.1);
}

.viz-swatch:hover:not(.active) {
    border-color: rgba(180, 104, 50, 0.4);
    transform: scale(1.05);
}

.viz-color-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 1px;
}

/* Visualizer responsive */
@media (max-width: 768px) {
    .viz-slider {
        border-radius: 12px;
    }
    .viz-handle-btn {
        width: 40px;
        height: 40px;
    }
    .viz-handle-btn svg {
        width: 20px;
        height: 20px;
    }
    .viz-swatch {
        width: 42px;
        height: 42px;
    }
    .viz-label {
        font-size: 0.7rem;
        padding: 4px 12px;
        bottom: 12px;
    }
    .viz-label-before { left: 12px; }
    .viz-label-after { right: 12px; }
}

@media (max-width: 480px) {
    .viz-swatch {
        width: 36px;
        height: 36px;
        border-radius: 8px;
    }
    .viz-swatches {
        gap: 6px;
    }
}

/* ========================================
   Application
   ======================================== */
.application {
    padding: 120px 0;
    background: var(--color-dark);
    color: var(--color-white);
}

.application .section-tag { color: var(--color-primary); }
.application .section-header h2 { color: var(--color-white); }
.application .section-header p { color: rgba(255,255,255,0.5); }

.application-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
}

.app-card {
    width: calc((100% - 48px) / 3);
    padding: 40px 32px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    box-sizing: border-box;
}

.app-card:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.15);
    transform: translateY(-4px);
}

.app-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
    color: var(--color-primary);
}

.app-icon svg { width: 100%; height: 100%; }
.app-icon img { width: 100%; height: 100%; object-fit: contain; }

.app-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.app-card p {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.55);
    line-height: 1.6;
}
/* ========================================
   Projects
   ======================================== */
.projects {
    padding: 120px 0;
    background: var(--color-cream);
}

/* ── Project Category Layout ── */
.project-category {
    margin-bottom: 20px;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 28px;
}

.category-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-dark);
    white-space: nowrap;
}

.category-line {
    flex: 1;
    height: 1.5px;
    background: var(--color-primary);
    opacity: 0.4;
}

.category-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-gray-300), transparent);
    margin: 60px 0;
}

/* ── Project Hero Image ── */
.project-hero {
    position: relative;
    width: 100%;
    max-height: 500px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    margin-bottom: 16px;
}

.project-hero img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.project-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(26,26,26,0.6) 0%, transparent 40%);
    display: flex;
    align-items: flex-end;
    padding: 36px;
    pointer-events: none;
}

.project-tag {
    display: inline-block;
    padding: 5px 16px;
    background: var(--color-primary);
    border-radius: 100px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-white);
    width: fit-content;
}

/* ── Project Grid ── */
.project-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.project-cell {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 4/3;
    background: var(--color-gray-100);
}

.project-cell img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.project-cell:hover img { transform: scale(1.08); }

.project-cell::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0);
    transition: background 0.3s ease;
}

.project-cell:hover::after {
    background: rgba(0,0,0,0.08);
}

/* ========================================
   Specs
   ======================================== */
.specs {
    padding: 120px 0;
    background: var(--color-white);
}

.specs-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
}

.spec-card {
    width: calc(25% - 18px);
    box-sizing: border-box;
    padding: 32px 24px;
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition);
}

.spec-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.spec-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.spec-icon svg { width: 100%; height: 100%; }

.spec-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: invert(55%) sepia(85%) saturate(1200%) hue-rotate(348deg) brightness(92%) contrast(88%);
}

.spec-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.spec-card p {
    font-size: 0.85rem;
    color: var(--color-gray-500);
    line-height: 1.5;
}

/* ========================================
   Installation
   ======================================== */
.installation {
    padding: 120px 0;
    background: var(--color-cream);
}

.install-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.install-content h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 800;
    color: var(--color-dark);
    line-height: 1.2;
    margin-bottom: 40px;
}

.install-steps {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.step-number {
    min-width: 56px;
    height: 56px;
    background: var(--color-dark);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 900;
}

.step-info h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 4px;
}

.step-info p {
    font-size: 0.88rem;
    color: var(--color-gray-500);
    line-height: 1.6;
}

.install-recommendation {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-top: 24px;
    padding: 16px 20px;
    background: rgba(232, 122, 46, 0.08);
    border-left: 3px solid var(--color-primary);
    border-radius: 0 8px 8px 0;
    color: var(--color-gray-500);
    font-size: 0.88rem;
    line-height: 1.6;
}

.install-recommendation svg {
    flex-shrink: 0;
    color: var(--color-primary);
    margin-top: 2px;
}

.install-recommendation strong {
    color: var(--color-primary);
}

.install-visual {
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.install-visual img {
    width: 100%;
    height: auto;
    object-fit: contain;
}

/* ========================================
   Partners
   ======================================== */
.partners {
    padding: 100px 0;
    background: var(--color-white);
}

.partners-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 32px 48px;
    max-width: 1100px;
    margin: 0 auto;
}

.partner-logo {
    display: flex;
    align-items: center;
    justify-content: center;
}

.partner-logo img {
    height: 40px;
    width: auto;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all 0.4s ease;
}

.partner-logo.partner-wide img {
    height: 35px;
}

.partner-logo img:hover {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.05);
}

/* ========================================
   FAQ
   ======================================== */
.faq {
    padding: 120px 0;
    background: var(--color-white);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition);
}

.faq-item.open {
    border-color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(224, 123, 60, 0.1);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    background: none;
    border: none;
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    cursor: pointer;
    text-align: left;
    transition: color var(--transition);
}

.faq-question:hover { color: var(--color-primary); }

.faq-question svg {
    width: 20px;
    height: 20px;
    min-width: 20px;
    color: var(--color-gray-300);
    transition: transform 0.3s ease, color 0.3s ease;
}

.faq-item.open .faq-question svg {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.open .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 24px 20px;
    font-size: 0.9rem;
    color: var(--color-gray-500);
    line-height: 1.7;
}

/* ========================================
   Contact
   ======================================== */
.contact {
    padding: 120px 0;
    background: var(--color-cream);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: flex-start;
}

.contact-info h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 800;
    color: var(--color-dark);
    line-height: 1.2;
    margin-bottom: 16px;
}

.contact-info > p {
    font-size: 1rem;
    color: var(--color-gray-500);
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: center;
}

.contact-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.contact-icon svg { width: 20px; height: 20px; }

.contact-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 2px;
}

.contact-item a {
    font-weight: 600;
    color: var(--color-dark);
}

.contact-item a:hover { color: var(--color-primary); }

.contact-item span:not(.contact-label) {
    font-weight: 500;
    color: var(--color-dark);
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 48px;
    height: 48px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-charcoal);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.social-links a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.social-links svg { width: 20px; height: 20px; }

.contact-form-wrapper {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 28px;
}

.form-group { margin-bottom: 16px; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    color: var(--color-dark);
    background: var(--color-cream);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    outline: none;
    transition: all var(--transition);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--color-gray-300);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    border-color: var(--color-primary);
    background: var(--color-white);
}

.contact-form textarea { resize: vertical; min-height: 120px; }

.contact-form select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23787878' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
    color: var(--color-gray-300);
}

.contact-form select:valid { color: var(--color-dark); }

.contact-form .btn { margin-top: 8px; }

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--color-dark);
    color: rgba(255,255,255,0.7);
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-logo {
    height: 30px;
    width: auto;
    margin-bottom: 16px;
}

.footer-tagline {
    font-size: 0.8rem;
    color: var(--color-primary);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.footer-desc {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.45);
    max-width: 300px;
}

.footer-nav h4,
.footer-contact h4 {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.footer-nav ul { display: flex; flex-direction: column; gap: 10px; }

.footer-nav a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.5);
    transition: color var(--transition);
}

.footer-nav a:hover { color: var(--color-primary); }

.footer-contact p {
    font-size: 0.9rem;
    margin-bottom: 8px;
    color: rgba(255,255,255,0.5);
}

.footer-contact a {
    color: rgba(255,255,255,0.7);
    transition: color var(--transition);
}

.footer-contact a:hover { color: var(--color-primary); }

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.3);
}

/* ========================================
   Animations
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
    .about-grid,
    .install-grid,
    .contact-grid { gap: 48px; }

    .spec-card { width: calc(50% - 12px); }
    .app-card { width: calc((100% - 24px) / 2); }
    .project-grid { grid-template-columns: repeat(2, 1fr); }
    .project-hero img { height: 400px; }
    .colors-grid { grid-template-columns: repeat(5, 1fr); }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        padding: 100px 32px 32px;
        gap: 4px;
        transition: right 0.4s ease;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
    }

    .nav-menu.open { right: 0; }

    .nav-menu .nav-link {
        color: var(--color-charcoal);
        font-size: 1rem;
        padding: 12px 16px;
        width: 100%;
        border-radius: var(--radius-sm);
    }

    .nav-menu .nav-link:hover,
    .nav-menu .nav-link.active {
        background: var(--color-cream);
        color: var(--color-primary);
    }

    .nav-menu .nav-link-cta {
        background: var(--color-primary);
        color: var(--color-white) !important;
        text-align: center;
        margin-left: 0;
        margin-top: 8px;
    }

    .nav-toggle { display: flex; }

    .nav-toggle.open span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
        background: var(--color-dark);
    }
    .nav-toggle.open span:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle.open span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
        background: var(--color-dark);
    }

    .hero { height: 70vh; min-height: 500px; }
    .hero-slide { background-position: center center; }
    .hero h1 { font-size: 2.5rem; }
    .hero-content { padding: 0 20px; }
    .hero-subtitle { margin-bottom: 28px; }
    .hero-slider-dots { bottom: 40px; }
    .hero-scroll { display: none; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }

    .about-grid,
    .install-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .about-visual { max-width: 400px; margin: 0 auto; }
    .about-image-accent { left: -20px; width: 150px; height: 150px; }

    .products-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

    .colors-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }

    .app-card { width: 100%; }

    .project-grid { grid-template-columns: 1fr; }
    .project-hero img { height: 280px; }

    .specs-grid { gap: 16px; }
    .spec-card { width: calc(50% - 8px); }

    .form-row { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; gap: 40px; }

    .contact-form-wrapper { padding: 32px 24px; }

    .install-visual { max-width: 400px; margin: 0 auto; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 2rem; }
    .hero-badge { font-size: 0.7rem; padding: 6px 18px; }
    .hero-actions { flex-direction: column; align-items: center; }
    .hero-actions .btn { width: 100%; max-width: 280px; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .stat-number { font-size: 1.8rem; }

    .colors-grid { grid-template-columns: repeat(3, 1fr); }

    .products-grid { grid-template-columns: 1fr; }

    .spec-card { width: 100%; }

    .section-header { margin-bottom: 40px; }

    .about, .products, .colors, .application,
    .projects, .specs, .installation, .faq, .contact {
        padding: 80px 0;
    }
}

/* ── Color Lightbox ── */
.color-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.82);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.color-lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    transform: scale(0.92);
    transition: transform 0.3s ease;
}

.color-lightbox.active .lightbox-content {
    transform: scale(1);
}

.lightbox-img {
    max-width: 90vw;
    max-height: 75vh;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.lightbox-label {
    margin-top: 16px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-white);
    letter-spacing: 0.5px;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 28px;
    z-index: 10000;
    width: 44px;
    height: 44px;
    border: none;
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-white);
    font-size: 2rem;
    line-height: 1;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.25);
}