/* Base & CSS Variables */
:root {
    --bg-color: #0b1120;
    --text-color: #f8fafc;
    --card-bg: #1e293b;
    --accent-blue: #0ea5e9;
    --accent-green: #10b981;
    --border-color: #334155;
    --input-bg: #0f172a;
    --grid-line-main: rgba(14, 165, 233, 0.15);
    --grid-line-sub: rgba(14, 165, 233, 0.05);
}

html.light {
    --bg-color: #f8fafc;
    --text-color: #0f172a;
    --card-bg: #ffffff;
    --accent-blue: #0284c7;
    --accent-green: #059669;
    --border-color: #e2e8f0;
    --input-bg: #f1f5f9;
    --grid-line-main: rgba(2, 132, 199, 0.15);
    --grid-line-sub: rgba(2, 132, 199, 0.05);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0; padding: 0; line-height: 1.6;
    background-image: 
        linear-gradient(var(--grid-line-main) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line-main) 1px, transparent 1px),
        linear-gradient(var(--grid-line-sub) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line-sub) 1px, transparent 1px);
    background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
}

.text-blue { color: var(--accent-blue); }
.text-green { color: var(--accent-green); }

/* Header & Navigation */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 1.5rem;
    background-color: var(--bg-color);
    position: relative;
    z-index: 100;
}

h1 { margin: 0; font-size: 2.5rem; letter-spacing: -1px; }
.subtitle { margin: 0; font-size: 0.9rem; opacity: 0.7; text-transform: uppercase; letter-spacing: 2px;}

.main-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: center;
    justify-content: center;
}

.main-nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}
.main-nav a:hover { color: var(--accent-green); }
.nav-highlight { color: var(--accent-blue) !important; }

.btn-theme {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}
.btn-theme:hover { border-color: var(--accent-blue); }

/* Hero Section */
.hero {
    text-align: center;
    padding: 5rem 2rem;
    background: radial-gradient(circle at center, rgba(14, 165, 233, 0.2) 0%, transparent 60%);
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}
html.light .hero { text-shadow: none; }
.hero h2 { font-size: 2.5rem; margin-bottom: 1rem; }
.hero p { font-size: 1.2rem; max-width: 800px; margin: 0 auto; opacity: 0.9; font-weight: 500;}

/* Content Layouts */
.content-section {
    padding: 4rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.content-section h2 { 
    font-size: 2.2rem; 
    border-bottom: 2px solid var(--accent-blue); 
    padding-bottom: 0.5rem; 
    display: inline-block; 
    background-color: var(--bg-color); 
    padding: 0.5rem 1rem;
    border-radius: 8px 8px 0 0;
}

.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
    align-items: start;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
    max-width: 1200px;
    margin: 0 auto;
}

.card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s;
    position: relative;
    z-index: 10;
}
.card:hover { transform: translateY(-5px); }
.card h3 { color: var(--accent-blue); margin-top: 0; }
.card.border-highlight { border: 2px solid var(--accent-green); }

/* Pricing Tables */
.pricing-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    display: block; /* Allows horizontal scrolling on small screens */
    overflow-x: auto;
    white-space: nowrap;
}
.pricing-table th, .pricing-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}
.pricing-table th { color: var(--accent-green); text-transform: uppercase; font-size: 0.8rem; letter-spacing: 1px; }

/* Image Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.img-container {
    background: var(--card-bg);
    padding: 10px;
    border: 1px solid var(--accent-blue);
    border-radius: 4px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}
.img-container img {
    width: 100%;
    height: auto;
    border-radius: 2px;
    filter: contrast(1.1) brightness(0.9);
}
.img-caption {
    font-size: 0.8rem;
    color: var(--accent-blue);
    text-align: center;
    margin-top: 0.5rem;
    font-weight: bold;
    text-transform: uppercase;
}

/* Forms */
.contact-form .form-group { margin-bottom: 1.5rem; }
.contact-form label { display: block; margin-bottom: 0.5rem; font-weight: bold; font-size: 0.9rem; color: var(--accent-blue); }
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--input-bg);
    color: var(--text-color);
    font-family: inherit;
    box-sizing: border-box;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent-green); }

.btn-submit {
    background-color: var(--accent-blue);
    color: #fff;
    border: none;
    padding: 1rem 2rem;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
    width: 100%;
}
.btn-submit:hover { background-color: var(--accent-green); }

.alert { padding: 1rem; border-radius: 6px; margin-bottom: 1.5rem; font-weight: bold; }
.alert.success { background-color: rgba(16, 185, 129, 0.2); color: var(--accent-green); border: 1px solid var(--accent-green); }
.alert.error { background-color: rgba(239, 68, 68, 0.2); color: #ef4444; border: 1px solid #ef4444; }

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    opacity: 0.9;
    background-color: var(--bg-color);
    position: relative;
    z-index: 100;
}

/* --- MOBILE RESPONSIVENESS --- */
@media (max-width: 768px) {
    header { 
        flex-direction: column; 
        text-align: center; 
        padding: 1.5rem 5%; 
    }
    .main-nav { 
        flex-direction: column; 
        gap: 0.75rem; 
        width: 100%; 
    }
    .hero { padding: 3rem 1rem; }
    .hero h2 { font-size: 2rem; }
    .split-layout { 
        grid-template-columns: 1fr; 
        gap: 1.5rem; 
    }
    .content-section { padding: 2rem 5%; }
    .card { padding: 1.5rem; }
}