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

:root {
    /* Colors */
    --primary: #3B82F6;
    --primary-dark: #2563EB;
    --secondary: #10B981;
    --dark: #0F172A;
    --dark-secondary: #1E293B;
    --gray: #64748B;
    --light-gray: #E2E8F0;
    --white: #FFFFFF;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Breakpoints */
    --mobile: 768px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== NAVIGATION ===== */
.navbar {
    background-color: var(--white);
    border-bottom: 1px solid var(--light-gray);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h1,
.nav-brand .brand-name {
    font-size: 1.5rem;
    color: var(--dark);
    font-weight: 700;
}

.nav-brand a {
    text-decoration: none;
    color: inherit;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.nav-menu .btn-primary {
    color: var(--white);
    background-color: var(--primary);
    padding: 0.5rem 1.5rem;
    border-radius: 6px;
}

.nav-menu .btn-primary:hover {
    background-color: var(--primary-dark);
    color: var(--white);
}

/* ===== HERO SECTION ===== */
.hero {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-secondary) 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--light-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

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

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

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

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

/* ===== SECTIONS ===== */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--dark);
}

/* ===== SERVICES SECTION ===== */
.services {
    background-color: #F8FAFC;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    display: block;
    color: inherit;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.service-card p {
    color: var(--gray);
    line-height: 1.7;
}

/* ===== ABOUT SECTION ===== */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.125rem;
    color: var(--gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

/* ===== CONTACT SECTION ===== */
.contact {
    background-color: #F8FAFC;
}

.contact-content {
    display: flex;
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    flex: 1;
}

.contact-info h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.contact-info p {
    color: var(--gray);
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

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

.contact-method {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.contact-method strong {
    color: var(--dark);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-method a {
    color: var(--primary);
    text-decoration: none;
    font-size: 1.125rem;
}

.contact-method a:hover {
    text-decoration: underline;
}

.contact-method span {
    color: var(--gray);
    font-size: 1rem;
}

/* ===== CONTACT FORM ===== */
.contact-form {
    flex: 1;
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--dark);
    font-weight: 600;
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--light-gray);
    border-radius: 6px;
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    resize: vertical;
}

.contact-form .btn {
    width: 100%;
    margin-top: var(--spacing-sm);
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--dark);
    color: var(--light-gray);
    padding: var(--spacing-md) 0;
    text-align: center;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .nav-menu {
        gap: var(--spacing-sm);
    }

    .contact-content {
        flex-direction: column;
    }

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

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

    .btn {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--spacing-lg) 0;
        min-height: 500px;
    }

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

    .nav-brand h1,
    .nav-brand .brand-name {
        font-size: 1.25rem;
    }
}