/* ============================================
   OPTIVIS - Premium Corporate Website Styles
   ============================================ */

/* CSS Custom Properties */
:root {
    --navy: #0B1F3A;
    --navy-light: #142a4a;
    --navy-dark: #061428;
    --gold: #C9A227;
    --gold-light: #ddb94a;
    --gold-dark: #a6851f;
    --white: #FFFFFF;
    --gray-50: #F5F7FA;
    --gray-100: #E8ECF1;
    --gray-200: #D1D9E2;
    --gray-300: #A8B4C4;
    --gray-400: #7A8BA3;
    --gray-500: #5A6B82;
    --gray-600: #3D4F66;
    --gray-700: #2A3A50;
    --gray-800: #1A2A40;
    --gray-900: #0F1D30;

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-gold: 0 0 30px rgba(201, 162, 39, 0.15);

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --container-max: 1280px;
    --container-padding: 24px;
}

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

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

body {
    font-family: var(--font-primary);
    font-weight: 400;
    line-height: 1.6;
    color: var(--gray-600);
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

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

ul, ol {
    list-style: none;
}

/* Utility Classes */
.text-gold {
    color: var(--gold);
}

.section-padding {
    padding: 100px 0;
}

.section-padding-sm {
    padding: 60px 0;
}

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

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--gold);
    margin-bottom: 16px;
}

.section-tag::before {
    content: '';
    display: block;
    width: 30px;
    height: 2px;
    background: var(--gold);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: var(--navy);
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-400);
    max-width: 600px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gold);
    color: var(--navy);
    box-shadow: 0 4px 14px rgba(201, 162, 39, 0.3);
}

.btn-primary:hover {
    background: var(--gold-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(201, 162, 39, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    border-color: var(--gold);
    color: var(--gold);
    background: rgba(201, 162, 39, 0.05);
}

.btn-small {
    padding: 10px 24px;
    font-size: 0.875rem;
}

.btn-full {
    width: 100%;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(11, 31, 58, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
}

.nav-logo img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
}

.nav-brand {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

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

.nav-link {
    display: block;
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--gold);
    border-radius: 2px;
    transition: transform var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: currentColor;
    position: relative;
    transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: currentColor;
    transition: all var(--transition-fast);
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    top: 7px;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--navy);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: url('../images/hero_bg.jpg') center/cover no-repeat;
    opacity: 0.6;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(11, 31, 58, 0.95) 0%,
        rgba(11, 31, 58, 0.85) 50%,
        rgba(11, 31, 58, 0.7) 100%
    );
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-particles::before,
.hero-particles::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    animation: float 20s ease-in-out infinite;
}

.hero-particles::before {
    width: 500px;
    height: 500px;
    background: var(--gold);
    top: -10%;
    right: -5%;
    animation-delay: 0s;
}

.hero-particles::after {
    width: 400px;
    height: 400px;
    background: #4a7abf;
    bottom: -10%;
    left: -5%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(20px, 10px) scale(1.02); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 120px var(--container-padding) 60px;
    color: var(--white);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--gold);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5.5vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-title .text-gold {
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 50%, var(--gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.75);
    max-width: 700px;
    margin: 0 auto 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

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

.hero-stat .stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
}

.hero-stat .stat-label {
    display: block;
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.15);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--gold), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-lead {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--gray-500);
    margin-bottom: 40px;
}

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

.specialty-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-base);
}

.specialty-item:hover {
    border-color: var(--gold);
    background: rgba(201, 162, 39, 0.03);
    transform: translateX(4px);
}

.specialty-icon {
    width: 20px;
    height: 20px;
    color: var(--gold);
    flex-shrink: 0;
}

.specialty-item span {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-700);
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.value-card {
    padding: 28px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-base);
}

.value-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--gray-200);
}

.value-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--navy);
    margin-bottom: 12px;
}

.value-card p {
    font-size: 0.9375rem;
    color: var(--gray-400);
    line-height: 1.7;
}

.value-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--navy), var(--navy-light));
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

.value-icon svg {
    width: 24px;
    height: 24px;
    color: var(--gold);
}

.values-list ul {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.values-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9375rem;
    color: var(--gray-500);
}

.value-dot {
    width: 6px;
    height: 6px;
    background: var(--gold);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ============================================
   PRODUCTS SECTION - Vertex Style
   ============================================ */
.products {
    background: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-100);
    transition: all var(--transition-base);
    position: relative;
}

.product-card:hover {
    box-shadow: 0 8px 30px rgba(11, 31, 58, 0.08);
    border-color: var(--gray-200);
}

.product-card__link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.product-card__image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: linear-gradient(135deg, var(--gray-50), var(--white));
}

.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(1.04);
}

.product-card__content {
    padding: 28px;
}

.product-card__title {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 12px;
    line-height: 1.3;
}

.product-card__desc {
    font-size: 0.9375rem;
    color: var(--gray-400);
    line-height: 1.6;
    margin-bottom: 20px;
}

.product-card__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--navy);
    transition: all var(--transition-base);
}

.product-card__arrow {
    width: 18px;
    height: 18px;
    color: var(--gold);
    transition: transform var(--transition-base);
}

.product-card:hover .product-card__cta {
    color: var(--gold);
}

.product-card:hover .product-card__arrow {
    transform: translateX(4px);
}

/* ============================================
   WHY OPTIVIS SECTION
   ============================================ */
.why-optivis {
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.feature-card {
    padding: 32px 24px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-base);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--gold);
    background: var(--white);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--navy), var(--navy-light));
    border-radius: var(--radius-md);
    margin: 0 auto 20px;
    transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    box-shadow: var(--shadow-gold);
}

.feature-icon svg {
    width: 26px;
    height: 26px;
    color: var(--gold);
    transition: color var(--transition-base);
}

.feature-card:hover .feature-icon svg {
    color: var(--white);
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    color: var(--navy);
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--gray-400);
    line-height: 1.6;
}

/* ============================================
   BRANDS SECTION
   ============================================ */
.brands {
    background: linear-gradient(135deg, var(--navy), var(--navy-light));
    color: var(--white);
}

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

.brands .section-subtitle {
    color: rgba(255, 255, 255, 0.6);
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

.brand-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
    transition: all var(--transition-base);
    letter-spacing: 0.5px;
}

.brand-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--gold);
    color: var(--gold);
    transform: translateY(-2px);
}

/* ============================================
   INDUSTRIES SECTION
   ============================================ */
.industries {
    position: relative;
    background: var(--navy);
    color: var(--white);
    overflow: hidden;
}

.industries-bg {
    position: absolute;
    inset: 0;
    background: url('../images/industries_bg.jpg') center/cover no-repeat;
    opacity: 0.3;
}

.industries .container {
    position: relative;
    z-index: 1;
}

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

.industries-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.industry-card {
    padding: 32px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.industry-card:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--gold);
    transform: translateY(-4px);
    box-shadow: var(--shadow-gold);
}

.industry-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 162, 39, 0.15);
    border-radius: var(--radius-md);
    margin: 0 auto 16px;
    transition: all var(--transition-base);
}

.industry-card:hover .industry-icon {
    background: var(--gold);
}

.industry-icon svg {
    width: 24px;
    height: 24px;
    color: var(--gold);
    transition: color var(--transition-base);
}

.industry-card:hover .industry-icon svg {
    color: var(--navy);
}

.industry-card h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
}

/* ============================================
   STATISTICS SECTION
   ============================================ */
.statistics {
    background: linear-gradient(135deg, var(--navy-dark), var(--navy));
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.statistics::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('../images/metrics_bg.jpg') center/cover no-repeat;
    opacity: 0.2;
}

.statistics .container {
    position: relative;
    z-index: 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.stat-item {
    text-align: center;
    padding: 20px;
}

.stat-item .stat-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 162, 39, 0.15);
    border-radius: var(--radius-md);
    margin: 0 auto 16px;
}

.stat-item .stat-icon svg {
    width: 26px;
    height: 26px;
    color: var(--gold);
}

.stat-item .stat-number,
.stat-item .stat-suffix {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
}

.stat-item .stat-label {
    display: block;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 8px;
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */
.testimonials {
    background: var(--gray-50);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    padding: 40px 32px;
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    position: relative;
    transition: all var(--transition-base);
}

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

.testimonial-quote {
    width: 40px;
    height: 40px;
    color: var(--gold);
    opacity: 0.3;
    margin-bottom: 16px;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--gray-500);
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.testimonial-author img {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--gold);
}

.author-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 2px;
}

.author-info span {
    font-size: 0.8125rem;
    color: var(--gray-400);
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq {
    background: var(--white);
}

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

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

.faq-item:hover {
    border-color: var(--gray-200);
}

.faq-item.active {
    border-color: var(--gold);
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--navy);
    text-align: left;
    gap: 16px;
    transition: all var(--transition-base);
}

.faq-question:hover {
    background: var(--gray-50);
}

.faq-icon {
    width: 20px;
    height: 20px;
    color: var(--gold);
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 24px 20px;
}

.faq-answer p {
    font-size: 0.9375rem;
    color: var(--gray-400);
    line-height: 1.7;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    position: relative;
    background: var(--navy);
    color: var(--white);
    overflow: hidden;
}

.contact-bg {
    position: absolute;
    inset: 0;
    background: url('../images/contact_bg.jpg') center/cover no-repeat;
    opacity: 0.25;
}

.contact .container {
    position: relative;
    z-index: 1;
}

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

.contact .section-subtitle {
    color: rgba(255, 255, 255, 0.6);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card {
    padding: 24px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.contact-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--gold);
}

.contact-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 162, 39, 0.15);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
}

.contact-icon svg {
    width: 20px;
    height: 20px;
    color: var(--gold);
}

.contact-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 6px;
}

.contact-card p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.contact-card a {
    color: var(--gold);
    transition: color var(--transition-base);
}

.contact-card a:hover {
    color: var(--gold-light);
}

.contact-registration {
    padding: 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
}

.contact-registration h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gold);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-registration p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 4px;
}

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

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-base);
}

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

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

/* Contact Form */
.contact-form-wrapper {
    padding: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(20px);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: 0.9375rem;
    transition: all var(--transition-base);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.35);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--gold);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.1);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.5)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

.form-group select option {
    background: var(--navy);
    color: var(--white);
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--navy-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-logo img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
}

.footer-brand p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.5);
}

.footer-links h4,
.footer-contact h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--transition-base);
}

.footer-links a:hover {
    color: var(--gold);
}

.footer-contact p {
    font-size: 0.875rem;
    line-height: 1.8;
    margin-bottom: 8px;
}

.footer-contact a {
    color: var(--gold);
    transition: color var(--transition-base);
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-legal {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer-legal a {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.4);
    transition: color var(--transition-base);
}

.footer-legal a:hover {
    color: var(--gold);
}

.footer-legal .divider {
    color: rgba(255, 255, 255, 0.2);
}

.footer-copyright {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gold);
    color: var(--navy);
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--gold-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   ANIMATIONS (AOS-like)
   ============================================ */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

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

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

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

[data-aos="fade-down"].aos-animate {
    transform: translateY(0);
}

/* Stagger delays */
[data-aos-delay="50"] { transition-delay: 0.05s; }
[data-aos-delay="100"] { transition-delay: 0.1s; }
[data-aos-delay="150"] { transition-delay: 0.15s; }
[data-aos-delay="200"] { transition-delay: 0.2s; }
[data-aos-delay="250"] { transition-delay: 0.25s; }
[data-aos-delay="300"] { transition-delay: 0.3s; }
[data-aos-delay="350"] { transition-delay: 0.35s; }
[data-aos-delay="400"] { transition-delay: 0.4s; }
[data-aos-delay="450"] { transition-delay: 0.45s; }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

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

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

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

@media (max-width: 768px) {
    .section-padding {
        padding: 60px 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--navy);
        flex-direction: column;
        padding: 80px 24px 24px;
        gap: 0;
        transition: right var(--transition-slow);
        z-index: 999;
    }

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

    .nav-link {
        padding: 16px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        font-size: 1rem;
    }

    .nav-link::after {
        display: none;
    }

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

    .about-specialties {
        grid-template-columns: 1fr;
    }

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

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

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

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

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .hero-stats {
        gap: 20px;
    }

    .hero-stat-divider {
        display: none;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 16px;
    }

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

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

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .stat-item .stat-number,
    .stat-item .stat-suffix {
        font-size: 2.5rem;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
@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;
    }
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --gold: #FFD700;
    }
}

/* Print styles */
@media print {
    .navbar,
    .hero-scroll,
    .back-to-top,
    .hero-bg,
    .industries-bg,
    .contact-bg {
        display: none !important;
    }

    .hero {
        min-height: auto;
        padding: 40px 0;
    }

    body {
        color: #000;
        background: #fff;
    }
}