/* ============================================
   CSS Variables & Base Styles
   ============================================ */

:root {
    /* Colors - Deep Navy + Vibrant Orange */
    --color-navy-dark: #0A1628;
    --color-navy: #152238;
    --color-navy-light: #1E3048;
    --color-orange: #FF6B35;
    --color-orange-light: #FF8C61;
    --color-white: #FFFFFF;
    --color-gray-100: #F5F7FA;
    --color-gray-200: #E8ECF2;
    --color-gray-300: #D1D9E6;
    --color-gray-400: #A8B4C9;
    --color-gray-600: #5A6B85;
    
    /* Typography */
    --font-display: 'DM Sans', sans-serif;
    --font-body: 'IBM Plex Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-2xl: 8rem;
    
    /* Layout */
    --container-width: 1200px;
    --border-radius: 4px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-navy);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-navy-dark);
}

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

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

/* ============================================
   Navigation
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-200);
    z-index: 1000;
    animation: slideDown 0.6s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-image {
    height: 80px;
    width: auto;
    display: block;
}

.nav-logo picture {
    display: block;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-navy-dark);
    letter-spacing: -0.02em;
}

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

.nav-menu a {
    font-weight: 500;
    color: var(--color-navy);
    transition: color var(--transition-fast);
}

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

.nav-cta {
    padding: 0.5rem 1.25rem;
    background: var(--color-orange);
    color: var(--color-white) !important;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.nav-cta:hover {
    background: var(--color-orange-light);
    transform: translateY(-1px);
}

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

.hero {
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(165deg, #1a2332 0%, #2d3e50 50%, #4a3a4a 100%);
    padding: calc(80px + var(--spacing-2xl)) var(--spacing-md) var(--spacing-2xl);
    min-height: 600px;
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0;
    position: relative;
    z-index: 1;
    width: 100%;
}

.hero-content {
    max-width: 650px;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

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

.hero-title {
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    color: var(--color-white);
    letter-spacing: -0.02em;
}

.hero-it {
    color: var(--color-orange);
    font-style: italic;
}

.hero-description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-ctas {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

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

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 6px;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--color-orange-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-secondary-white {
    background: transparent;
    color: var(--color-navy-dark);
    border-color: var(--color-navy-dark);
}

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

/* ============================================
   Services Section
   ============================================ */

.services {
    padding: var(--spacing-2xl) var(--spacing-md);
    background: var(--color-gray-100);
}

.services-container {
    max-width: var(--container-width);
    margin: 0 auto;
}

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

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-orange);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--color-navy-dark);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background: var(--color-white);
    border-radius: 12px;
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(10, 22, 40, 0.08);
}

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-orange);
}

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

.service-description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.service-link {
    color: var(--color-orange);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.service-link:hover {
    color: var(--color-orange-light);
    transform: translateX(4px);
    display: inline-block;
}

/* ============================================
   Why Choose Section
   ============================================ */

.why-choose {
    padding: var(--spacing-2xl) var(--spacing-md);
    background: var(--color-white);
}

.why-choose-container {
    max-width: var(--container-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.why-choose-image {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(10, 22, 40, 0.1);
}

.why-choose-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    display: block;
}

.why-choose-content {
    padding: var(--spacing-md);
}

.why-choose-items {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.why-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 107, 53, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-orange);
}

.why-text h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
    color: var(--color-navy-dark);
}

.why-text p {
    color: var(--color-gray-600);
    line-height: 1.6;
    margin: 0;
}

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

.cta-section {
    padding: var(--spacing-2xl) var(--spacing-md);
    background: var(--color-gray-100);
}

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

.cta-title {
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--color-navy-dark);
    margin-bottom: var(--spacing-md);
}

.cta-description {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

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

/* ============================================
   Contact Section
   ============================================ */

.contact {
    padding: var(--spacing-2xl) var(--spacing-md);
    background: var(--color-navy-dark);
    color: var(--color-white);
}

.contact-container {
    max-width: var(--container-width);
    margin: 0 auto;
}

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

.contact-header .section-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.contact-intro {
    font-size: 1.25rem;
    color: var(--color-gray-300);
    max-width: 600px;
    margin: 0 auto;
}

.contact-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-xl);
}

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

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-gray-200);
}

.form-group input,
.form-group textarea {
    padding: 0.875rem;
    background: var(--color-navy);
    border: 2px solid var(--color-navy-light);
    border-radius: var(--border-radius);
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-orange);
    background: var(--color-navy-light);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-400);
}

.contact-form button {
    grid-column: 1 / -1;
    justify-self: start;
}

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

.contact-detail h4 {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.contact-detail a {
    color: var(--color-white);
    font-size: 1.25rem;
    transition: color var(--transition-fast);
}

.contact-detail a:hover {
    color: var(--color-orange);
}

.contact-detail p {
    font-size: 1.25rem;
    margin: 0;
}

.contact-note {
    padding: var(--spacing-md);
    background: var(--color-navy);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-orange);
}

.contact-note p {
    color: var(--color-gray-300);
    margin: 0;
}

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

.footer {
    background: var(--color-navy-dark);
    color: var(--color-gray-300);
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
    border-top: 1px solid var(--color-navy-light);
}

.footer-container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

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

.footer-brand p {
    color: var(--color-gray-400);
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.footer-column h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

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

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

.footer-column a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-orange);
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-navy-light);
    text-align: center;
    color: var(--color-gray-400);
    font-size: 0.875rem;
}

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

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
        --spacing-2xl: 5rem;
    }
    
    .nav-logo {
        padding-top: 0.5rem;
    }
    
    .logo-image {
        height: 45px;
        max-width: 180px;
    }
    
    .nav-menu {
        gap: var(--spacing-sm);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .why-choose-container {
        grid-template-columns: 1fr;
    }
    
    .why-choose-image {
        order: 2;
    }
    
    .why-choose-image img {
        height: 300px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .nav-menu {
        display: none;
    }
    
    .hero-ctas {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
}