/* ================================
   CSS Variables & Design System
   ================================ */
:root {
    /* Colors - Premium Dark/Navy Theme */
    --color-primary: #0f172a;
    /* Deep Navy */
    --color-secondary: #1e293b;
    /* Slate Dark */
    --color-accent: #d4af37;
    /* Gold */
    --color-accent-hover: #f0c84f;
    /* Light Gold */
    --color-text-light: #e2e8f0;
    /* Light Grey */
    --color-text-muted: #94a3b8;
    /* Muted Grey */
    --color-bg-dark: #020617;
    /* Near Black */
    --color-border: #334155;
    /* Border Grey */

    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;

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

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ================================
   Reset & Base Styles
   ================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ================================
   Header & Navigation
   ================================ */
.header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 60px;
    width: auto;
    transition: transform var(--transition-normal);
}

.logo:hover {
    transform: scale(1.05);
}

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

.nav-links a {
    color: var(--color-text-light);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    position: relative;
    transition: all var(--transition-fast);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 80%;
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-light);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ================================
   Hero Section
   ================================ */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-bg-dark) 100%);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Background Image Slider */
.hero-bg-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-bg-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-bg-slide.active {
    opacity: 1;
}

/* Overlay to ensure text readability */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
            rgba(15, 23, 42, 0.85) 0%,
            rgba(30, 41, 59, 0.85) 50%,
            rgba(2, 6, 23, 0.9) 100%);
    z-index: 1;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none"/><circle cx="50" cy="50" r="1" fill="rgba(212,175,55,0.1)"/></svg>');
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
    z-index: 2;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 900px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 0.8s ease-out;
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease-out;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1.2s ease-out;
}

/* ================================
   Buttons
   ================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    color: var(--color-primary);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(212, 175, 55, 0.5);
}

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

.btn-secondary:hover {
    background: var(--color-accent);
    color: var(--color-primary);
    transform: translateY(-3px);
}

/* ================================
   Container & Sections
   ================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--color-accent);
    margin: var(--spacing-sm) auto 0;
    border-radius: 2px;
}

/* ================================
   Responsive Service Layouts
   ================================ */
.service-layout-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.service-layout-2col-reverse {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.service-list-2col {
    list-style: none;
    padding: 0;
    columns: 2;
    column-gap: 2rem;
}

.service-list-2col li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
    break-inside: avoid;
}

/* ================================
   Services Grid
   ================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.service-card {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent) 0%, transparent 100%);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(212, 175, 55, 0.2);
    border-color: var(--color-accent);
}

.service-card h3 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.service-card p {
    color: var(--color-text-muted);
}

/* ================================
   Features Section
   ================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-secondary);
    border-radius: 12px;
    transition: all var(--transition-normal);
    border: 1px solid var(--color-border);
}

.feature-item:hover {
    transform: translateY(-10px);
    background: var(--color-primary);
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.3);
    border-color: var(--color-accent);
}

.feature-icon {
    font-size: 4rem;
    margin: 0 auto var(--spacing-sm);
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    position: relative;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-normal);
}

.feature-item:hover .feature-icon {
    transform: scale(1.1);
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.5);
}

/* Individual icon gradients and styles */
.feature-icon:nth-child(1) {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.feature-icon:nth-child(2) {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.feature-icon:nth-child(3) {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.feature-icon:nth-child(4) {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.feature-item h4 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
    font-size: 1.3rem;
}

.feature-item p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* ================================
   Contact Form
   ================================ */
.contact-form {
    max-width: 600px;
    margin: var(--spacing-lg) auto;
    background: var(--color-secondary);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

@media (max-width: 768px) {
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-form {
        margin: var(--spacing-md) 0;
        padding: var(--spacing-sm);
    }
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-accent);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm);
    background: var(--color-primary);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-light);
    font-family: var(--font-body);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

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

/* ================================
   Footer
   ================================ */
.footer {
    background: var(--color-primary);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 2px solid var(--color-accent);
}

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

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

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

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

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.5rem;
    }

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

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-primary);
        padding: var(--spacing-sm);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    /* Service page responsive layouts */
    .service-layout-2col,
    .service-layout-2col-reverse {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    /* Reverse the order on mobile for alternating image/text layout */
    .service-layout-2col-reverse>*:first-child {
        order: 2;
    }

    .service-layout-2col-reverse>*:last-child {
        order: 1;
    }

    /* Stack 2-column lists to single column on mobile */
    .service-list-2col {
        columns: 1;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .hero {
        min-height: 500px;
        padding: var(--spacing-lg) var(--spacing-sm);
    }
}