/* ============================================
   CLAIRON FILTERS - Main Stylesheet
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #0066CC;
    --color-primary-dark: #004C99;
    --color-primary-light: #3399FF;
    --color-secondary: #00A3E0;
    --color-accent: #00D4AA;

    --color-dark: #0A1628;
    --color-dark-lighter: #1A2A40;
    --color-gray-900: #1F2937;
    --color-gray-800: #374151;
    --color-gray-600: #6B7280;
    --color-gray-400: #9CA3AF;
    --color-gray-200: #E5E7EB;
    --color-gray-100: #F3F4F6;
    --color-white: #FFFFFF;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-accent: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
    --gradient-dark: linear-gradient(180deg, var(--color-dark) 0%, var(--color-dark-lighter) 100%);

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'DM Sans', 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;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(0, 102, 204, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Container */
    --container-max: 1280px;
    --container-padding: 1.5rem;
}

/* ============================================
   RESET & BASE
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ============================================
   UTILITIES
   ============================================ */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-alt {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.section-tag--light {
    color: var(--color-secondary);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-dark);
    margin-bottom: var(--space-lg);
}

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

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 600px;
}

.section-header--center {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header--center .section-subtitle {
    margin: 0 auto;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9375rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn--primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-md), 0 4px 20px rgba(0, 102, 204, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 8px 30px rgba(0, 102, 204, 0.4);
}

.btn--ghost {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn--ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn--sm {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
}

.btn--lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn--full {
    width: 100%;
}

.btn .material-icons-outlined {
    font-size: 1.25rem;
    transition: transform var(--transition-base);
}

.btn:hover .material-icons-outlined {
    transform: translateX(4px);
}

/* ============================================
   PARTICLES BACKGROUND
   ============================================ */

.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 15s infinite ease-in-out;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0.3;
    }
    50% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0.6;
    }
}

/* ============================================
   HEADER
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: all var(--transition-base);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    padding: var(--space-sm) 0;
}

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

.header__logo-img {
    height: 40px;
    width: auto;
    transition: var(--transition-base);
}

.header.scrolled .header__logo-img {
    height: 36px;
}

.header__nav {
    display: none;
}

.header__menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.header__link {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--color-white);
    position: relative;
    padding: var(--space-xs) 0;
    transition: color var(--transition-base);
}

.header.scrolled .header__link {
    color: var(--color-gray-800);
}

.header__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

.header__link:hover::after,
.header__link.active::after {
    width: 100%;
}

.header__link:hover,
.header__link.active {
    color: var(--color-primary);
}

.header.scrolled .header__link:hover,
.header.scrolled .header__link.active {
    color: var(--color-primary);
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.header__lang {
    display: none;
    align-items: center;
    gap: var(--space-xs);
}

.lang-btn {
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-white);
    opacity: 0.6;
    transition: opacity var(--transition-base);
}

.header.scrolled .lang-btn {
    color: var(--color-gray-600);
}

.lang-btn.active,
.lang-btn:hover {
    opacity: 1;
}

.header.scrolled .lang-btn.active {
    color: var(--color-primary);
}

.lang-divider {
    color: var(--color-white);
    opacity: 0.3;
}

.header.scrolled .lang-divider {
    color: var(--color-gray-400);
}

.header__toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    z-index: 1001;
}

.header__toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.header.scrolled .header__toggle span {
    background: var(--color-dark);
}

.header__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.header__toggle.active span:nth-child(2) {
    opacity: 0;
}

.header__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero__slider {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.hero__slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.hero__slide.active {
    opacity: 1;
    visibility: visible;
}

.hero__slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: var(--slide-bg);
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    transition: transform 8s ease;
}

.hero__slide.active::before {
    transform: scale(1);
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(10, 22, 40, 0.9) 0%,
        rgba(10, 22, 40, 0.7) 50%,
        rgba(10, 22, 40, 0.5) 100%
    );
}

.hero__content {
    position: relative;
    z-index: 10;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    padding-top: 80px;
}

.hero__tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-secondary);
    margin-bottom: var(--space-lg);
    padding: var(--space-sm) var(--space-md);
    background: rgba(0, 163, 224, 0.1);
    border: 1px solid rgba(0, 163, 224, 0.3);
    border-radius: var(--radius-full);
}

.hero__title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
}

.hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-gray-400);
    max-width: 540px;
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.hero__controls {
    position: absolute;
    bottom: 40px;
    left: var(--container-padding);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    z-index: 20;
}

.hero__arrow {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.hero__arrow:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

.hero__dots {
    display: flex;
    gap: var(--space-sm);
}

.hero__dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: none;
    transition: all var(--transition-base);
}

.hero__dot.active,
.hero__dot:hover {
    background: var(--color-white);
    transform: scale(1.2);
}

.hero__scroll {
    position: absolute;
    bottom: 40px;
    right: var(--container-padding);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    z-index: 20;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator__mouse {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-white);
    border-radius: 2px;
    animation: scroll-mouse 1.5s infinite;
}

@keyframes scroll-mouse {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(12px);
    }
}

.scroll-indicator__text {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ============================================
   STATS
   ============================================ */

.stats {
    background: var(--gradient-dark);
    padding: var(--space-3xl) 0;
    position: relative;
    z-index: 10;
}

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

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-item__icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-item__icon .material-icons-outlined {
    font-size: 28px;
    color: var(--color-white);
}

.stat-item__content {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0 var(--space-xs);
}

.stat-item__number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-white);
    line-height: 1;
}

.stat-item__suffix {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.stat-item__label {
    width: 100%;
    font-size: 0.875rem;
    color: var(--color-gray-400);
    margin-top: var(--space-xs);
}

/* ============================================
   ABOUT
   ============================================ */

.about {
    padding: var(--space-4xl) 0;
    background: var(--color-gray-100);
}

.about__grid {
    display: grid;
    gap: var(--space-3xl);
}

.about__content {
    max-width: 560px;
}

.about__text {
    font-size: 1.0625rem;
    color: var(--color-gray-600);
    margin-bottom: var(--space-xl);
    line-height: 1.8;
}

.about__features {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.feature-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.feature-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
}

.feature-item__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.1) 0%, rgba(0, 163, 224, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-item__icon .material-icons-outlined {
    font-size: 24px;
    color: var(--color-primary);
}

.feature-item__content h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--space-xs);
}

.feature-item__content p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.about__visuals {
    position: relative;
}

.about__image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: var(--space-md);
}

.about__image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

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

.about__image:hover img {
    transform: scale(1.05);
}

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

.about__image--small {
    aspect-ratio: 4 / 3;
}

.about__image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(to top, rgba(10, 22, 40, 0.8), transparent);
}

.about__image-overlay span {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-white);
}

.about__locations {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.location-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-white);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-800);
    box-shadow: var(--shadow-sm);
}

.location-tag .material-icons-outlined {
    font-size: 16px;
    color: var(--color-primary);
}

/* ============================================
   PRODUCTS
   ============================================ */

.products {
    padding: var(--space-4xl) 0;
    background: var(--color-white);
}

.products__grid {
    display: grid;
    gap: var(--space-xl);
}

.product-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
}

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

.product-card__image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

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

.product-card:hover .product-card__image img {
    transform: scale(1.1);
}

.product-card__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 102, 204, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.product-card:hover .product-card__overlay {
    opacity: 1;
}

.product-card__overlay .material-icons-outlined {
    font-size: 48px;
    color: var(--color-white);
}

.product-card__content {
    padding: var(--space-xl);
    position: relative;
}

.product-card__icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    margin-top: -52px;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.product-card__icon .material-icons-outlined {
    font-size: 28px;
    color: var(--color-white);
}

.product-card__title {
    font-family: var(--font-heading);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-sm);
}

.product-card__desc {
    font-size: 0.9375rem;
    color: var(--color-gray-600);
    margin-bottom: var(--space-md);
    line-height: 1.7;
}

.product-card__features {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.product-card__features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-gray-800);
}

.product-card__features .material-icons-outlined {
    font-size: 18px;
    color: var(--color-accent);
}

.product-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--color-primary);
    transition: gap var(--transition-base);
}

.product-card__link:hover {
    gap: var(--space-md);
}

.product-card__link .material-icons-outlined {
    font-size: 20px;
}

/* ============================================
   CERTIFICATIONS
   ============================================ */

.certifications {
    padding: var(--space-4xl) 0;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
}

.certifications::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 102, 204, 0.2) 0%, transparent 70%);
    pointer-events: none;
}

.certifications__wrapper {
    position: relative;
    z-index: 1;
}

.certifications__content {
    max-width: 560px;
    margin-bottom: var(--space-3xl);
}

.certifications__text {
    font-size: 1.0625rem;
    color: var(--color-gray-400);
    line-height: 1.8;
}

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

.cert-card {
    padding: var(--space-xl);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.cert-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
}

.cert-card__icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
}

.cert-card__icon .material-icons-outlined {
    font-size: 32px;
    color: var(--color-white);
}

.cert-card__title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-xs);
}

.cert-card__desc {
    font-size: 0.875rem;
    color: var(--color-gray-400);
}

/* ============================================
   INFRASTRUCTURE
   ============================================ */

.infrastructure {
    padding: var(--space-4xl) 0;
    background: var(--color-gray-100);
}

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

.infra-item {
    padding: var(--space-xl);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
}

.infra-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.infra-item__icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.1) 0%, rgba(0, 163, 224, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
}

.infra-item__icon .material-icons-outlined {
    font-size: 32px;
    color: var(--color-primary);
}

.infra-item h4 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--space-xs);
}

.infra-item p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* ============================================
   BRANDS
   ============================================ */

.brands {
    padding: var(--space-3xl) 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-gray-200);
}

.brands__wrapper {
    text-align: center;
}

.brands__title {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-600);
    margin-bottom: var(--space-xl);
}

.brands__logos {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2xl);
}

.brand-logo {
    opacity: 0.7;
    transition: opacity var(--transition-base);
    filter: grayscale(100%);
}

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

.brand-logo img {
    height: 48px;
    width: auto;
}

/* ============================================
   CONTACT
   ============================================ */

.contact {
    padding: var(--space-4xl) 0;
    background: var(--color-gray-100);
}

.contact__grid {
    display: grid;
    gap: var(--space-3xl);
}

.contact__info {
    max-width: 480px;
}

.contact__text {
    font-size: 1.0625rem;
    color: var(--color-gray-600);
    margin-bottom: var(--space-xl);
    line-height: 1.8;
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.contact-item__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item__icon .material-icons-outlined {
    font-size: 24px;
    color: var(--color-white);
}

.contact-item__content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-item__label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-600);
    margin-bottom: var(--space-xs);
}

.contact-item__content a,
.contact-item__content span {
    font-size: 0.9375rem;
    color: var(--color-dark);
    font-weight: 500;
}

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

.contact__form-wrapper {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-xl);
}

.contact-form__title {
    font-family: var(--font-heading);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-xl);
}

.form-row {
    display: grid;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

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

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-800);
}

.form-input {
    padding: 0.875rem 1rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    color: var(--color-dark);
    background: var(--color-gray-100);
    transition: all var(--transition-base);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-input::placeholder {
    color: var(--color-gray-400);
}

.form-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='%236B7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

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

.contact-form .btn {
    margin-top: var(--space-md);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--color-dark);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer__grid {
    display: grid;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.footer__brand {
    max-width: 280px;
}

.footer__logo {
    height: 40px;
    width: auto;
    margin-bottom: var(--space-md);
}

.footer__tagline {
    font-size: 0.9375rem;
    color: var(--color-gray-400);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.footer__social {
    display: flex;
    gap: var(--space-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.social-link svg {
    width: 20px;
    height: 20px;
    color: var(--color-white);
}

.footer__heading {
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

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

.footer__links a {
    font-size: 0.9375rem;
    color: var(--color-gray-400);
    transition: color var(--transition-base);
}

.footer__links a:hover {
    color: var(--color-white);
}

.footer__contact p,
.footer__contact a {
    font-size: 0.9375rem;
    color: var(--color-gray-400);
    margin-bottom: var(--space-sm);
}

.footer__contact a:hover {
    color: var(--color-white);
}

.footer__locations {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.footer__locations span {
    font-size: 0.8125rem;
    color: var(--color-gray-600);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
}

.footer__bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
}

.footer__copyright {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.footer__legal {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
}

.footer__legal a {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    transition: color var(--transition-base);
}

.footer__legal a:hover {
    color: var(--color-white);
}

/* ============================================
   MOBILE NAVIGATION
   ============================================ */

.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--color-dark);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav__menu {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
}

.mobile-nav__link {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-white);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.mobile-nav.active .mobile-nav__link {
    opacity: 1;
    transform: translateY(0);
}

.mobile-nav__link:hover {
    color: var(--color-secondary);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Extra Small Devices (phones, 320px and up) */
@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
        --space-3xl: 2.5rem;
        --space-4xl: 3.5rem;
    }

    .hero__title {
        font-size: 2rem;
    }

    .hero__subtitle {
        font-size: 0.9375rem;
    }

    .hero__tag {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }

    .hero__cta {
        flex-direction: column;
        width: 100%;
    }

    .hero__cta .btn {
        width: 100%;
        justify-content: center;
    }

    .hero__controls {
        bottom: 30px;
        left: var(--container-padding);
        gap: var(--space-sm);
    }

    .hero__arrow {
        width: 36px;
        height: 36px;
    }

    .hero__dot {
        width: 10px;
        height: 10px;
    }

    .hero__scroll {
        display: none;
    }

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

    .stat-item {
        padding: var(--space-md);
    }

    .stat-item__number {
        font-size: 2rem;
    }

    .stat-item__icon {
        width: 48px;
        height: 48px;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .about__features {
        gap: var(--space-md);
    }

    .feature-item {
        flex-direction: column;
        text-align: center;
    }

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

    .about__image--large {
        grid-column: span 1;
    }

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

    .product-card__content {
        padding: var(--space-lg);
    }

    .product-card__icon {
        width: 48px;
        height: 48px;
        margin-top: -44px;
    }

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

    .cert-card {
        padding: var(--space-lg);
    }

    .cert-card__icon {
        width: 56px;
        height: 56px;
    }

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

    .infra-item {
        padding: var(--space-lg);
    }

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

    .brand-logo img {
        height: 36px;
    }

    .contact__form-wrapper {
        padding: var(--space-lg);
    }

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

    .contact-form__title {
        font-size: 1.25rem;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }

    .footer__brand {
        max-width: 100%;
    }

    .footer__social {
        justify-content: center;
    }

    .footer__locations {
        justify-content: center;
    }

    .footer__legal {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .header__actions .btn--sm {
        display: none;
    }

    .mobile-nav__link {
        font-size: 1.25rem;
    }
}

/* Small Devices (landscape phones, 481px - 639px) */
@media (min-width: 481px) and (max-width: 639px) {
    .hero__title {
        font-size: 2.5rem;
    }

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

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

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

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

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

@media (min-width: 640px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }

    .stats__grid {
        grid-template-columns: repeat(4, 1fr);
    }

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

    .infrastructure__grid .infra-item:nth-child(4),
    .infrastructure__grid .infra-item:nth-child(5) {
        grid-column: span 1;
    }

    .footer__bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

@media (min-width: 768px) {
    .header__nav {
        display: block;
    }

    .header__toggle {
        display: none;
    }

    .header__lang {
        display: flex;
    }

    .header__actions .btn--sm {
        display: inline-flex;
    }

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

    .certifications__grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .infrastructure__grid {
        grid-template-columns: repeat(5, 1fr);
    }

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

@media (min-width: 1024px) {
    .about__grid {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }

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

    .certifications__wrapper {
        display: grid;
        grid-template-columns: 1fr 1.5fr;
        gap: var(--space-3xl);
        align-items: center;
    }

    .certifications__content {
        margin-bottom: 0;
    }

    .contact__grid {
        grid-template-columns: 1fr 1.2fr;
        align-items: start;
    }

    .footer__grid {
        grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    }
}

@media (min-width: 1280px) {
    :root {
        --container-padding: 2rem;
    }

    .hero__content {
        max-width: 640px;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 48px;
        padding: 0.875rem 1.5rem;
    }

    .header__toggle {
        padding: var(--space-md);
        min-width: 48px;
        min-height: 48px;
    }

    .hero__arrow {
        min-width: 48px;
        min-height: 48px;
    }

    .hero__dot {
        min-width: 16px;
        min-height: 16px;
    }

    .form-input {
        min-height: 48px;
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .product-card:hover {
        transform: none;
    }

    .feature-item:hover {
        transform: none;
    }

    .cert-card:hover {
        transform: none;
    }

    .infra-item:hover {
        transform: none;
    }
}

/* Safe area padding for notched devices */
@supports (padding: env(safe-area-inset-bottom)) {
    .footer {
        padding-bottom: calc(var(--space-xl) + env(safe-area-inset-bottom));
    }

    .mobile-nav {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }

    .header {
        padding-top: calc(var(--space-md) + env(safe-area-inset-top));
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}