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

:root {
    /* Color Palette - Dark Navy Theme */
    --color-bg: #0a0f1a;
    --color-bg-light: #111827;
    --color-bg-card: #1a2332;
    --color-text: #ffffff;
    --color-text-secondary: #9ca3af;
    --color-text-muted: #6b7280;
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    --color-accent-light: rgba(59, 130, 246, 0.1);
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(59, 130, 246, 0.4);
    --color-success: #10b981;
    --color-error: #ef4444;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing Scale */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --spacing-4xl: 8rem;

    /* Layout */
    --container-max: 1140px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --transition: 0.3s ease;
    --transition-fast: 0.15s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-hover);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.15;
}

h2 {
    font-size: clamp(1.875rem, 4vw, 2.5rem);
}

h3 {
    font-size: 1.25rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    font-family: inherit;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-text);
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.25);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    color: var(--color-text);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
}

.btn-secondary:hover {
    background-color: var(--color-accent-light);
    color: var(--color-accent);
}

.btn-submit {
    width: 100%;
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(10, 15, 26, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    height: 72px;
}

.logo {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: 0.1em;
}

.logo:hover {
    color: var(--color-text);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-menu a {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition);
}

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

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-light) 100%);
}

.hero-content {
    max-width: 720px;
    padding: var(--spacing-3xl) 0;
}

.hero h1 {
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.0625rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 580px;
    line-height: 1.8;
}

/* Section Styles */
.section-title {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 1.0625rem;
    margin-bottom: var(--spacing-3xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* Services Section */
.services {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.service-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-icon {
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-accent-light);
    border-radius: var(--border-radius-sm);
}

.service-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.service-card p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* About Section */
.about {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-bg);
}

.about-content {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.0625rem;
    line-height: 1.8;
}

.about-text p:last-child {
    margin-bottom: 0;
}

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

/* Contact Section */
.contact {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-bg-light);
}

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

.contact-form-container {
    position: relative;
}

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

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

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.required {
    color: var(--color-accent);
}

.form-group input,
.form-group textarea {
    padding: 0.9375rem 1rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-group input.error,
.form-group textarea.error {
    border-color: var(--color-error);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.error-message {
    font-size: 0.8125rem;
    color: var(--color-error);
    min-height: 1.25rem;
}

.hidden {
    display: none !important;
}

/* Form Success/Error States */
.form-success,
.form-error {
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--color-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.success-icon {
    color: var(--color-success);
    margin-bottom: var(--spacing-md);
}

.error-icon {
    color: var(--color-error);
    margin-bottom: var(--spacing-md);
}

.form-success h3,
.form-error h3 {
    margin-bottom: var(--spacing-sm);
}

.form-success p,
.form-error p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

/* Contact Info */
.contact-info {
    padding: var(--spacing-xl);
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.contact-info h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.contact-intro {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    font-size: 0.9375rem;
    line-height: 1.7;
}

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

.info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.info-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-accent-light);
    border-radius: var(--border-radius-sm);
    color: var(--color-accent);
    flex-shrink: 0;
}

.info-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.info-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-content a,
.info-content span:not(.info-label) {
    color: var(--color-text);
    font-size: 0.9375rem;
    font-weight: 500;
}

.info-content a:hover {
    color: var(--color-accent);
}

/* Footer */
.footer {
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.footer-brand .logo {
    display: block;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.footer-contact p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
    text-align: right;
}

.footer-contact p:last-child {
    margin-bottom: 0;
}

.footer-contact strong {
    color: var(--color-text);
}

.footer-contact a {
    color: var(--color-text-secondary);
}

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

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

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation delay for service cards */
.services-grid .service-card:nth-child(1) { transition-delay: 0s; }
.services-grid .service-card:nth-child(2) { transition-delay: 0.1s; }
.services-grid .service-card:nth-child(3) { transition-delay: 0.2s; }

/* Responsive Design */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-3xl: 4rem;
        --spacing-4xl: 5rem;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background-color: rgba(10, 15, 26, 0.98);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition);
        border-bottom: 1px solid var(--color-border);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu a::after {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

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

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

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

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

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

    .contact-info {
        order: -1;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-lg);
    }

    .footer-contact {
        width: 100%;
    }

    .footer-contact p {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero-content {
        padding: var(--spacing-2xl) 0;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .service-card {
        padding: var(--spacing-lg);
    }

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

    .info-item {
        gap: var(--spacing-sm);
    }

    .info-icon {
        width: 40px;
        height: 40px;
    }

    .info-icon svg {
        width: 20px;
        height: 20px;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .btn,
    .contact-form {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .hero,
    .services,
    .about,
    .contact,
    .footer {
        padding: 2rem 0;
    }
}