/* ===========================
   CSS Reset & Base Styles
   =========================== */

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

:root {
    /* Color Palette */
    --navy: #1e3a5f;
    --slate: #334e68;
    --light-slate: #486581;
    --accent: #3b82f6;
    --accent-dark: #2563eb;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-light: #718096;
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-dark: #1a202c;
    --border: #e2e8f0;
    
    /* Typography */
    --font-primary: -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 */
    --container-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

/* ===========================
   Typography
   =========================== */

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--navy);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

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

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

/* ===========================
   Layout
   =========================== */

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

/* ===========================
   Header & Navigation
   =========================== */

header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

nav {
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy);
    text-decoration: none;
}

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

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

.nav-links a {
    color: var(--text-primary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--accent);
    background-color: var(--bg-secondary);
}

.nav-links a.active {
    color: var(--accent);
}

.nav-links a.cta-link {
    background-color: var(--accent);
    color: white;
}

.nav-links a.cta-link:hover {
    background-color: var(--accent-dark);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    display: block;
    width: 1.5rem;
    height: 2px;
    background-color: var(--navy);
    transition: var(--transition);
}

/* ===========================
   Hero Section
   =========================== */

.hero {
    background: linear-gradient(135deg, var(--navy) 0%, var(--slate) 100%);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero-with-image {
    position: relative;
    padding: 0;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

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

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 58, 95, 0.92) 0%, rgba(51, 78, 104, 0.85) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: var(--spacing-xl) var(--spacing-md);
}

.hero h1 {
    color: white;
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-md);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ===========================
   Buttons
   =========================== */

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: 0.5rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

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

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

/* ===========================
   Feature Cards
   =========================== */

.features {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-secondary);
}

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

.feature-card {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    color: var(--accent);
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
}

.feature-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--accent);
    font-weight: 600;
    transition: var(--transition);
}

.feature-link:hover {
    color: var(--accent-dark);
    transform: translateX(4px);
}

/* ===========================
   CTA Section
   =========================== */

.cta-section {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.cta-section h2 {
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

/* ===========================
   Page Header
   =========================== */

.page-header {
    background: linear-gradient(135deg, var(--navy) 0%, var(--slate) 100%);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.page-header h1 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
}

/* ===========================
   Services Page
   =========================== */

.services-detail {
    padding: var(--spacing-xl) 0;
}

.service-block {
    margin-bottom: var(--spacing-lg);
}

.service-block h2 {
    margin-bottom: var(--spacing-md);
}

.service-block-with-image {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border);
}

.service-block-with-image:last-of-type {
    border-bottom: none;
}

.service-block-reverse {
    direction: rtl;
}

.service-block-reverse > * {
    direction: ltr;
}

.service-image {
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.service-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.service-image img:hover {
    transform: scale(1.05);
}

.service-content h2 {
    margin-bottom: var(--spacing-md);
}

.service-list {
    list-style: none;
    margin-top: var(--spacing-md);
}

.service-list li {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--accent);
    border-radius: 0.25rem;
}

/* ===========================
   About Page
   =========================== */

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

.about-hero-image {
    margin-bottom: var(--spacing-lg);
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.about-hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

.about-section {
    margin-bottom: var(--spacing-lg);
}

.about-section h2 {
    margin-bottom: var(--spacing-md);
}

.philosophy-point {
    margin-top: var(--spacing-md);
    padding-left: var(--spacing-md);
    border-left: 4px solid var(--accent);
}

.philosophy-point h3 {
    font-size: 1.25rem;
    color: var(--navy);
    margin-bottom: var(--spacing-sm);
}

/* ===========================
   Contact Page
   =========================== */

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

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

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

.contact-method {
    margin-top: var(--spacing-md);
}

.contact-method h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.contact-link {
    font-size: 1.125rem;
    font-weight: 600;
}

.contact-form-container {
    background-color: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: 0.5rem;
}

.contact-form {
    margin-top: var(--spacing-md);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-note {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ===========================
   Footer
   =========================== */

footer {
    background-color: var(--bg-dark);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-col h4 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.footer-col p {
    color: rgba(255, 255, 255, 0.8);
}

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

.footer-col ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-col a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-col a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .hero-with-image {
        min-height: 500px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .service-block-with-image {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .service-block-reverse {
        direction: ltr;
    }
    
    .service-image {
        order: -1;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: white;
        padding: var(--spacing-md);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .nav-links.active {
        transform: translateX(0);
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-links a {
        display: block;
        width: 100%;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    .hero {
        padding: var(--spacing-md) 0;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }
}

/* ===========================
   Accessibility
   =========================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}