/* ==================== CORE VARIABLES ==================== */
:root {
    --primary: #0056b3;
    --secondary: #28a745;
    --dark: #1a1a2e;
    --light: #f8f9fa;
    --white: #ffffff;
    --gray: #6c757d;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
    --transition: all 0.3s ease;
}

/* ==================== RESET & BASE ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #333;
    background: var(--white);
}

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

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

/* ==================== UTILITY CLASSES ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

/* ==================== HEADER ==================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--dark);
    border-radius: 3px;
    transition: var(--transition);
}

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 20px 80px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: clamp(2rem, 4vw, 3.2rem);
    color: var(--dark);
    margin-bottom: 25px;
    line-height: 1.2;
}

.hero-text h1 span {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 35px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 15px 35px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: #004494;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,86,179,0.3);
}

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

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

/* ==================== SECTION TITLES ==================== */
.section-title {
    text-align: center;
    margin-bottom: 50px;
    padding: 0 15px;
}

.section-title h2 {
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    color: var(--dark);
    margin-bottom: 12px;
    font-weight: 700;
}

.section-title p {
    color: var(--gray);
    font-size: 1rem;
}

/* ==================== ABOUT SECTION ==================== */
.about {
    padding: 80px 20px;
    background: var(--light);
}

.about-content {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    padding: 0 15px;
}

.about-text h3 {
    font-size: clamp(1.3rem, 3vw, 1.6rem);
    color: var(--dark);
    margin-bottom: 18px;
    font-weight: 600;
}

.about-text p {
    margin-bottom: 18px;
    color: #555;
    font-size: 0.98rem;
    line-height: 1.7;
}

.brands {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.brand-card {
    background: var(--white);
    padding: 25px 20px;
    border-radius: 12px;
    text-align: center;
    flex: 1;
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
    transition: var(--transition);
}

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

.brand-card h4 {
    color: var(--primary);
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.brand-card p {
    font-size: 0.85rem;
    color: #666;
    line-height: 1.5;
}

.about-image {
    border-radius: 16px;
    min-height: 350px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    max-width: 100%;
    max-height: 400px;
}

/* ==================== PRODUCTS SECTION ==================== */
.products {
    padding: 80px 20px;
}

.products-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.product-image {
    height: 220px;
    background: linear-gradient(135deg, #e8f4f8 0%, #d4e5f7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-image img {
    max-width: 100%;
    max-height: 100%;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-content {
    padding: 25px;
}

.product-tag {
    display: inline-block;
    background: rgba(0,86,179,0.1);
    color: var(--primary);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.product-content h3 {
    font-size: 1.2rem;
    color: var(--dark);
    margin-bottom: 10px;
}

.product-subtitle {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.product-features {
    list-style: none;
    margin-bottom: 20px;
}

.product-features li {
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
    font-size: 0.9rem;
    color: #555;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
}

/* ==================== SOLUTIONS SECTION ==================== */
.solutions {
    padding: 80px 20px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
}

.solutions .section-title h2 {
    color: white;
}

.solutions .section-title p {
    color: rgba(255,255,255,0.7);
}

.solutions-grid {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.solution-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 35px 25px;
    text-align: center;
    transition: var(--transition);
}

.solution-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-5px);
}

.solution-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.solution-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.solution-card p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
}

/* ==================== WHY US SECTION ==================== */
.why-us {
    padding: 80px 20px;
    background: var(--light);
}

.why-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.why-card {
    background: var(--white);
    border-radius: 16px;
    padding: 35px 25px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: var(--transition);
}

.why-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.why-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.why-card h3 {
    font-size: 1.15rem;
    color: var(--dark);
    margin-bottom: 10px;
}

.why-card p {
    font-size: 0.9rem;
    color: var(--gray);
    line-height: 1.6;
}

/* ==================== CONTACT SECTION ==================== */
.contact {
    padding: 80px 20px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
}

.contact h2 {
    color: white;
    text-align: center;
    margin-bottom: 10px;
}

.contact p {
    text-align: center;
    margin-bottom: 30px;
}

.contact-info {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: nowrap;
}

.contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px 20px;
    background: rgba(255,255,255,0.1);
    border-radius: 12px;
    white-space: nowrap;
}

.contact-item span {
    line-height: 1;
}

.contact-item p {
    margin: 0;
    line-height: 1.2;
}

@media (max-width: 768px) {
    .contact-info {
        flex-direction: column;
        align-items: center;
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .contact-item {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

.contact-icon {
    font-size: 1.5rem;
}

.contact-item p {
    font-size: 1rem;
}

/* ==================== FOOTER ==================== */
footer {
    background: #111;
    color: rgba(255,255,255,0.7);
    padding: 30px 20px;
    text-align: center;
}

footer p {
    font-size: 0.9rem;
}

/* ==================== MOBILE RESPONSIVE ==================== */
@media (max-width: 768px) {
    /* Header */
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 10px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links a {
        padding: 15px 20px;
        background: var(--light);
        border-radius: 10px;
        font-size: 1rem;
    }
    
    /* Hero */
    .hero {
        padding: 90px 15px 50px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        text-align: center;
        justify-content: center;
    }
    
    /* About */
    .about {
        padding: 60px 15px;
        overflow: hidden;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 25px;
        padding: 0 10px;
        max-width: 100%;
        overflow: hidden;
    }
    
    .section-title {
        padding: 0 10px;
        margin-bottom: 30px;
    }
    
    .section-title h2 {
        font-size: 1.5rem;
    }
    
    .section-title p {
        font-size: 0.9rem;
    }
    
    .about-text {
        padding: 0 5px;
        text-align: center;
    }
    
    .about-text h3 {
        font-size: 1.3rem;
    }
    
    .about-text p {
        font-size: 0.9rem;
        line-height: 1.6;
        text-align: left;
    }
    
    /* Force vertical stacking on mobile */
    .brands {
        display: flex !important;
        flex-direction: column !important;
        flex-wrap: nowrap !important;
        gap: 15px !important;
        width: 100% !important;
        margin-top: 20px;
    }
    
    .brand-card {
        width: 100% !important;
        flex: 0 0 auto !important;
        max-width: 100% !important;
        padding: 20px 15px !important;
    }
    
    .brand-card h4 {
        font-size: 1rem;
    }
    
    .brand-card p {
        font-size: 0.85rem;
    }
    
    .about-image {
        order: -1;
        width: 100%;
        min-height: 220px;
        max-height: 280px;
        overflow: hidden;
        border-radius: 12px;
    }
    
    .about-image img {
        width: 100%;
        height: auto;
        object-fit: cover;
    }
    
    /* Products */
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    /* Solutions */
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    /* Why Us */
    .why-grid {
        grid-template-columns: 1fr;
    }
    
    /* Contact */
    .contact-info {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }
    
    .contact-item {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    /* Sections */
    .products, .solutions, .why-us, .contact {
        padding: 60px 15px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.6rem;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
    }
    
    .product-content {
        padding: 20px;
    }
    
    .solution-card {
        padding: 25px 20px;
    }
    
    .why-card {
        padding: 25px 20px;
    }
    
    .contact-item {
        padding: 15px 20px;
    }
    
    .contact-item p {
        font-size: 0.9rem;
    }
}