/* ========================================
   PT. Wahana Insulasi Nusantara
   Brand Colors: Navy Blue (#3d5a80) + Light Blue (#a8c5db)
   ======================================== */

:root {
    /* Colors - WIN Brand Palette */
    --color-primary: #3d5a80;
    --color-primary-dark: #2c4460;
    --color-primary-light: #4a6d99;
    --color-accent-light: #a8c5db;
    --color-accent-lighter: #d4e4ef;
    
    --color-ink: #1a2633;
    --color-ink-light: #4a5568;
    --color-ink-muted: #718096;
    --color-paper: #ffffff;
    --color-paper-warm: #f7fafc;
    --color-paper-accent: #edf2f7;
    --color-success: #2d6a4f;
    --color-error: #c53030;
    
    /* Typography */
    --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: var(--space-lg);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Borders */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-ink);
    background-color: var(--color-paper);
    overflow-x: hidden;
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

::selection {
    background-color: var(--color-primary);
    color: var(--color-paper);
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-main);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-ink);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.375rem); }

p {
    color: var(--color-ink-light);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   Layout Components
   ======================================== */
.section-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-3xl);
}

.section-header-light {
    color: var(--color-paper);
}

.section-header-light .section-label {
    color: var(--color-accent-light);
}

.section-header-light .section-title {
    color: var(--color-paper);
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-desc {
    font-size: 1.0625rem;
    color: var(--color-ink-muted);
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom-color: var(--color-paper-accent);
    box-shadow: 0 4px 20px rgba(61, 90, 128, 0.08);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-sm) var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--color-primary);
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.logo-img-footer {
    height: 40px;
    filter: brightness(0) invert(1);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
}

.nav-links a {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-ink-light);
    transition: color var(--transition-fast);
}

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

.nav-cta {
    padding: var(--space-md) var(--space-xl);
    background: var(--color-primary);
    color: var(--color-paper) !important;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), transform var(--transition-fast) !important;
}

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: var(--space-sm);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-btn.active span:first-child {
    transform: rotate(45deg) translate(5px, 6px);
}

.mobile-menu-btn.active span:last-child {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 50px;
    left: 0;
    right: 0;
    background: var(--color-paper);
    padding: var(--space-xl);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
    z-index: 99;
    border-bottom: 1px solid var(--color-paper-accent);
    box-shadow: 0 10px 40px rgba(61, 90, 128, 0.1);
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.mobile-nav-links a {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-ink);
}

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

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: var(--space-5xl) 0 var(--space-4xl);
    overflow: hidden;
    background: linear-gradient(165deg, var(--color-paper) 0%, var(--color-paper-warm) 50%, var(--color-accent-lighter) 100%);
}

.hero-content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    position: relative;
    z-index: 2;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary);
    padding: var(--space-sm) var(--space-md);
    background: rgba(61, 90, 128, 0.1);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.2s;
}

.hero-title {
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.4s;
}

.hero-subtitle {
    font-size: 1.125rem;
    max-width: 560px;
    margin-bottom: var(--space-2xl);
    line-height: 1.8;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.8s;
}

/* Hero Visual */
.hero-visual {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    pointer-events: none;
}

.hero-shape {
    position: absolute;
    top: 15%;
    right: 5%;
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    opacity: 0;
    animation: morphShape 1s ease forwards, floatShape 8s ease-in-out infinite;
    animation-delay: 0.5s, 1.5s;
}

.hero-shape-2 {
    position: absolute;
    top: 35%;
    right: 20%;
    width: 200px;
    height: 200px;
    background: var(--color-accent-light);
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    opacity: 0;
    animation: morphShape 1s ease forwards, floatShape 6s ease-in-out infinite reverse;
    animation-delay: 0.7s, 1.7s;
}

.hero-shape-3 {
    position: absolute;
    top: 60%;
    right: 10%;
    width: 120px;
    height: 120px;
    border: 3px solid var(--color-accent-lighter);
    border-radius: 50%;
    opacity: 0;
    animation: morphShape 1s ease forwards, floatShape 10s ease-in-out infinite;
    animation-delay: 0.9s, 1.9s;
}

@keyframes morphShape {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 0.6; transform: scale(1); }
}

@keyframes floatShape {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-main);
    font-size: 0.9375rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-paper);
    box-shadow: 0 4px 14px rgba(61, 90, 128, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(61, 90, 128, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-paper);
}

.btn-full {
    width: 100%;
}

.btn-loading {
    display: none;
}

.btn.loading .btn-text {
    display: none;
}

.btn.loading .btn-loading {
    display: block;
}

.spinner {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

/* ========================================
   About Section
   ======================================== */
.about {
    padding: var(--space-5xl) 0;
    background: var(--color-paper);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.about-text {
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.about-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.about-feature {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-paper-warm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

.feature-icon {
    color: var(--color-primary);
    font-weight: 700;
}

.about-image {
    position: relative;
}

.about-photo {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    object-fit: cover;
    aspect-ratio: 4/3;
}

.image-placeholder {
    position: relative;
    background: linear-gradient(135deg, var(--color-paper-warm) 0%, var(--color-accent-lighter) 100%);
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--color-accent-light);
}

.placeholder-content {
    text-align: center;
    color: var(--color-ink-muted);
}

.placeholder-content svg {
    width: 80px;
    height: 80px;
    margin-bottom: var(--space-md);
}

.placeholder-content span {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
}

/* ========================================
   Products Section
   ======================================== */
.products {
    padding: var(--space-5xl) 0;
    background: var(--color-paper-warm);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.product-card {
    position: relative;
    padding: var(--space-2xl);
    background: var(--color-paper);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-paper-accent);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(61, 90, 128, 0.1);
}

.product-featured {
    border-color: var(--color-primary);
    border-width: 2px;
}

.product-badge {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-primary);
    color: var(--color-paper);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
}

.badge-premium {
    background: linear-gradient(135deg, #d4af37 0%, #f4d160 100%);
    color: var(--color-ink);
}

.product-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-lg);
    color: var(--color-primary);
}

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

.product-title {
    margin-bottom: var(--space-md);
    color: var(--color-ink);
}

.product-desc {
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.product-specs {
    list-style: none;
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: var(--color-paper-warm);
    border-radius: var(--radius-sm);
}

.product-specs li {
    font-size: 0.8125rem;
    color: var(--color-ink-light);
    padding: var(--space-xs) 0;
    padding-left: var(--space-md);
    position: relative;
}

.product-specs li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
}

.product-buyers {
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-paper-accent);
}

.buyers-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-ink-muted);
    margin-bottom: var(--space-xs);
}

.buyers-tags {
    font-size: 0.8125rem;
    color: var(--color-primary);
    font-weight: 500;
}

/* ========================================
   Advantages Section
   ======================================== */
.advantages {
    padding: var(--space-5xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.advantage-card {
    padding: var(--space-xl);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    transition: background var(--transition-base), transform var(--transition-base);
}

.advantage-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
}

.advantage-number {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-accent-light);
    margin-bottom: var(--space-md);
}

.advantage-card h3 {
    font-size: 1.125rem;
    color: var(--color-paper);
    margin-bottom: var(--space-sm);
}

.advantage-card p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

/* ========================================
   Stats Section
   ======================================== */
.stats {
    padding: var(--space-2xl) 0;
    background: var(--color-paper);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    text-align: center;
}

.stat-number {
    display: block;
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

/* ========================================
   Clients Logo Carousel
   ======================================== */
.clients {
    padding: var(--space-3xl) 0;
    background: var(--color-paper);
    border-top: 1px solid var(--color-paper-accent);
}

.clients-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.clients-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-ink-muted);
}

.clients-carousel {
    display: flex;
    align-items: center;
    gap: var(--space-3xl);
    overflow: hidden;
    position: relative;
}

.clients-carousel::before,
.clients-carousel::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100px;
    z-index: 2;
    pointer-events: none;
}

.clients-carousel::before {
    left: 0;
    background: linear-gradient(to right, var(--color-paper), transparent);
}

.clients-carousel::after {
    right: 0;
    background: linear-gradient(to left, var(--color-paper), transparent);
}

.clients-track {
    display: flex;
    align-items: center;
    gap: var(--space-3xl);
    animation: scroll 30s linear infinite;
}

.clients-track:hover {
    animation-play-state: paused;
}

.client-logo {
    flex-shrink: 0;
    width: 180px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-paper);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-paper-accent);
    padding: var(--space-lg);
    transition: transform var(--transition-base), border-color var(--transition-base);
}

.client-logo:hover {
    transform: scale(1.05);
    border-color: var(--color-primary);
}

.client-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: filter var(--transition-base), opacity var(--transition-base);
}

.client-logo:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

.client-logo-placeholder {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-ink-muted);
    text-align: center;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-180px * 5 - var(--space-3xl) * 5));
    }
}

.stat-number {
    display: block;
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-ink-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========================================
   Gallery Section
   ======================================== */
.gallery {
    padding: var(--space-5xl) 0;
    background: var(--color-paper);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    background: var(--color-paper-warm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.gallery-item:hover {
    transform: scale(1.03);
    box-shadow: 0 12px 28px rgba(61, 90, 128, 0.2);
    z-index: 1;
}

.gallery-item.large {
    grid-column: span 2;
    aspect-ratio: 16/9;
}

.gallery-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-paper-warm) 0%, var(--color-accent-lighter) 100%);
    border: 2px dashed var(--color-accent-light);
    color: var(--color-ink-muted);
}

.gallery-placeholder span {
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: var(--space-sm);
}

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

.gallery-item:hover img {
    transform: scale(1.1);
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    padding: var(--space-5xl) 0;
    background: var(--color-paper);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
}

.contact-text {
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: var(--space-2xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-item-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-ink-muted);
    margin-bottom: var(--space-xs);
}

.contact-item a,
.contact-item span {
    color: var(--color-ink);
    font-size: 1rem;
    font-weight: 500;
}

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

/* Contact Map */
.contact-map {
    margin-top: var(--space-xl);
}

.map-link {
    display: block;
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(61, 90, 128, 0.1);
}

.map-link iframe {
    display: block;
    pointer-events: none;
}

.map-overlay {
    position: absolute;
    bottom: var(--space-md);
    left: var(--space-md);
    right: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-primary);
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.map-link:hover .map-overlay {
    background: var(--color-primary);
    color: var(--color-paper);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-paper-warm);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-paper-accent);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-ink);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--space-md);
    font-family: var(--font-main);
    font-size: 1rem;
    color: var(--color-ink);
    background: var(--color-paper);
    border: 1px solid var(--color-paper-accent);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-ink-muted);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(61, 90, 128, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23718096' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-right: var(--space-3xl);
}

.form-group.error input,
.form-group.error textarea,
.form-group.error select {
    border-color: var(--color-error);
}

.error-message {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-error);
    margin-top: var(--space-xs);
    min-height: 1.2em;
}

.form-success {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: rgba(45, 106, 79, 0.1);
    border-radius: var(--radius-sm);
    margin-top: var(--space-lg);
}

.form-success svg {
    width: 24px;
    height: 24px;
    color: var(--color-success);
    flex-shrink: 0;
    margin-top: 2px;
}

.form-success p {
    color: var(--color-success);
    font-weight: 500;
    font-size: 0.9375rem;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--space-4xl) 0 var(--space-xl);
    background: var(--color-ink);
    color: var(--color-paper);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--space-4xl);
    padding-bottom: var(--space-3xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
    margin-bottom: var(--space-md);
    color: var(--color-paper);
}

.footer-description {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
    max-width: 350px;
}

.footer-brand .logo-icon {
    color: var(--color-paper);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-contact a,
.footer-contact span {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

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

.footer-contact span {
    line-height: 1.5;
}

.footer-nav {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3xl);
}

.footer-nav-group h4 {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent-light);
    margin-bottom: var(--space-md);
}

.footer-nav-group ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-nav-group a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-nav-group a:hover {
    color: var(--color-accent-light);
}

.footer-nav-group li:not(:last-child) {
    margin-bottom: var(--space-sm);
}

.footer-nav-group a[href^="http"],
.footer-nav-group a[href^="mailto"] {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    word-break: break-all;
}

.footer-nav-group li:not(:has(a)) {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    line-height: 1.6;
}

.footer-bottom {
    padding-top: var(--space-xl);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--color-ink-muted);
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes morphShape {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 0.6;
        transform: scale(1);
    }
}

@keyframes floatShape {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Scroll animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .hero-visual {
        width: 45%;
    }

    .hero-shape {
        width: 260px;
        height: 260px;
    }

    .hero-shape-2 {
        width: 180px;
        height: 180px;
    }

    .hero-shape-3 {
        width: 110px;
        height: 110px;
    }

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

    .clients-carousel::before,
    .clients-carousel::after {
        width: 60px;
    }

    .clients-track {
        gap: var(--space-xl);
    }

    .client-logo {
        width: 140px;
        height: 70px;
    }

    @keyframes scroll {
        0% {
            transform: translateX(0);
        }
        100% {
            transform: translateX(calc(-140px * 5 - var(--space-xl) * 5));
        }
    }

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

    .footer-content {
        grid-template-columns: 1fr 1.5fr;
    }

    .footer-nav {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-2xl);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: var(--space-md);
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding: calc(var(--space-5xl) + 60px) 0 var(--space-4xl);
    }
    
    .hero-visual {
        display: none;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .about-image {
        order: -1;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .case-studies-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-xl);
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .footer-nav {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .footer-nav-group {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .case-studies-grid {
        grid-template-columns: 1fr;
    }

    .footer-nav {
        flex-direction: column;
    }

    .clients-carousel {
        gap: var(--space-lg);
    }

    .client-logo {
        width: 120px;
        height: 60px;
        font-size: 0.6875rem;
    }

    @keyframes scroll {
        0% {
            transform: translateX(0);
        }
        100% {
            transform: translateX(calc(-120px * 5 - var(--space-lg) * 5));
        }
    }

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