/* ==================== CSS VARIABLES & RESET ==================== */
:root {
    --primary: #1F2937;
    --secondary: #F59E0B;
    --accent: #10B981;
    --dark: #1F2937;
    --light: #F3F4F6;
    --white: #FFFFFF;
    --gray: #6B7280;
    --gray-dark: #374151;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--dark);
    background-color: var(--white);
    line-height: 1.6;
    letter-spacing: -0.3px;
}

/* ==================== CONTAINER & UTILITIES ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
}

.section-header .header-line {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    margin: var(--spacing-md) auto var(--spacing-lg);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray);
    margin-top: var(--spacing-md);
}

/* ==================== NAVIGATION ==================== */
.navbar {
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo {
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.logo-svg {
    width: 120px;
    height: 50px;
    margin-right: var(--spacing-lg);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    position: relative;
    transition: var(--transition);
    padding: var(--spacing-xs) 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: var(--transition);
}

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

.cta-btn {
    background: linear-gradient(135deg, var(--primary), var(--secondary)) !important;
    color: var(--white) !important;
    padding: 0.75rem 1.5rem !important;
    border-radius: var(--radius-md);
}

.cta-btn::after {
    display: none !important;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 90vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 163, 217, 0.1) 0%, rgba(255, 140, 66, 0.1) 100%);
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(44, 62, 80, 0.3);
    z-index: 2;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    line-height: 1.2;
}

.hero p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 163, 217, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 163, 217, 0.4);
}

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

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

/* ==================== ABOUT SECTION ==================== */
.about {
    padding: var(--spacing-2xl) 0;
    background-color: var(--light);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--gray-dark);
}

.about-text strong {
    color: var(--primary);
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.highlight-item {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    text-align: center;
}

.highlight-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.highlight-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
}

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

.highlight-item h4 {
    color: var(--dark);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

.highlight-item p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* ==================== SERVICES SECTION ==================== */
.services {
    padding: var(--spacing-2xl) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
}

.service-category {
    background: linear-gradient(135deg, rgba(0, 163, 217, 0.05) 0%, rgba(255, 140, 66, 0.05) 100%);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 163, 217, 0.2);
    transition: var(--transition);
}

.service-category:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 15px 40px rgba(0, 163, 217, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-lg);
}

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

.service-category h3 {
    font-size: 1.4rem;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.service-list {
    list-style: none;
}

.service-list li {
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--gray-dark);
    position: relative;
    font-size: 0.95rem;
}

.service-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
}

/* ==================== DIFFERENTIALS SECTION ==================== */
.differentials {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, rgba(0, 163, 217, 0.05) 0%, rgba(255, 140, 66, 0.05) 100%);
}

.differentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.differential-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.differential-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

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

.card-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

.differential-card h4 {
    color: var(--dark);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.differential-card p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ==================== CLIENTS SECTION ==================== */
.clients {
    padding: var(--spacing-2xl) 0;
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-lg);
}

.client-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100px;
    background: var(--light);
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    transition: var(--transition);
    cursor: pointer;
    padding: var(--spacing-sm);
    overflow: hidden;
}

.client-logo img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    filter: brightness(0.85);
    transition: var(--transition);
}

.client-logo:hover {
    border-color: var(--secondary);
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.2);
    transform: translateY(-3px);
}

.client-logo:hover img {
    filter: brightness(1);
}

.logo-placeholder {
    font-weight: 600;
    color: var(--gray);
    text-align: center;
    padding: var(--spacing-md);
}

/* ==================== CONTACT SECTION ==================== */
.contact {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, rgba(31, 41, 55, 0.05) 0%, rgba(245, 158, 11, 0.05) 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-lg);
}

.contact-icon {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
}

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

.contact-item h4 {
    font-size: 1.2rem;
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
}

.contact-item p {
    color: var(--gray-dark);
    margin-bottom: var(--spacing-xs);
}

.contact-item a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

/* ==================== CONTACT FORM ==================== */
.contact-form {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem var(--spacing-sm);
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-md);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 163, 217, 0.1);
}

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

.contact-form .btn {
    width: 100%;
}

/* ==================== FOOTER ==================== */
.footer {
    background: linear-gradient(135deg, #1F2937 0%, #111827 100%);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid rgba(245, 158, 11, 0.2);
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--secondary);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: #FBBF24;
    text-decoration: underline;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul a {
    transition: var(--transition);
}

.footer-section ul a:hover {
    padding-left: var(--spacing-sm);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin-bottom: var(--spacing-sm);
}

.footer-bottom a {
    color: var(--primary);
    text-decoration: none;
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: var(--transition);
        box-shadow: var(--shadow-md);
    }

    .nav-menu.active {
        max-height: 400px;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        padding: var(--spacing-md) var(--spacing-lg);
        border-bottom: 1px solid var(--light);
    }

    .menu-toggle {
        display: flex;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

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

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

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

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

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-2xl: 2rem;
    }

    .logo-svg {
        width: 100px;
        height: 40px;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
    }

    .hero {
        min-height: 80vh;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .section-header h2 {
        font-size: 1.7rem;
    }

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

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

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

    .contact-form {
        padding: var(--spacing-lg);
    }

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

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.service-category,
.differential-card,
.highlight-item {
    animation: fadeInUp 0.6s ease-out;
}

/* ==================== UTILITY CLASSES ==================== */
.opacity-0 {
    opacity: 0;
}

.pointer-none {
    pointer-events: none;
}

.scroll-hidden {
    overflow: hidden;
}