:root {
    /* Primary Colors */
    --primary: #24c98f;
    --primary-hover: #1ea876;
    --primary-pressed: #18855d;

    /* Background Colors */
    --background: #121212;
    --surface: #1e1e1e;
    --surface-hover: #2a2a2a;
    --border: #333333;

    /* Text Colors */
    --text: #ffffff;
    --text-muted: #b0b0b0;
    --text-dark: #000000;

    /* Status Colors */
    --success: #24c98f;
    --error: #cf6679;
    --error-hover: #b05565;

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

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;

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

[data-theme="light"] {
    /* Background Colors */
    --background: #ffffff;
    --surface: #f5f5f5;
    --surface-hover: #e0e0e0;
    --border: #e0e0e0;

    /* Text Colors */
    --text: #121212;
    --text-muted: #666666;
    --text-dark: #ffffff;
    /* Inverted for contrast on dark elements */
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

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

ul {
    list-style: none;
}

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

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

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

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

/* Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--text-dark);
}

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

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

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

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    transition: background-color var(--transition-normal);
}

[data-theme="light"] header {
    background-color: rgba(255, 255, 255, 0.9);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    color: var(--primary);
}

nav ul {
    display: flex;
    gap: var(--spacing-md);
}

nav a {
    color: var(--text);
    font-weight: 500;
}

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

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lang-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    margin-left: var(--spacing-sm);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    /* Offset for fixed header */
    background: radial-gradient(circle at top right, rgba(36, 201, 143, 0.1), transparent 40%),
        radial-gradient(circle at bottom left, rgba(36, 201, 143, 0.05), transparent 40%);
}

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

.hero h1 {
    background: linear-gradient(to right, var(--text), var(--primary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

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

.card {
    background-color: var(--surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border-color: var(--primary);
}

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

.card ul {
    list-style: disc;
    padding-left: 1.2rem;
    color: var(--text-muted);
}

.card li {
    margin-bottom: 0.5rem;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    nav ul {
        display: none;
        /* Mobile menu to be implemented */
    }
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.contact-info {
    background-color: var(--surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.map-container {
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 100%;
    min-height: 300px;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom {
    text-align: center;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Fix logo alignment in header & footer */
.logo {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-weight: 600;
}

.logo img {
    display: block;
    height: 32px;
    /* header default */
    width: auto;
}

/* Footer logo smaller size */
footer .logo img {
    height: 24px;
}

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