/* style.css */
:root {
    --primary: #0f172a;       /* Deep Charcoal/Blue */
    --secondary: #1e293b;     /* Lighter Slate */
    --accent: #3b82f6;        /* Electric Blue */
    --accent-glow: rgba(59, 130, 246, 0.5);
    --text-light: #f8fafc;
    --text-gray: #94a3b8;
    --white: #ffffff;
    --font-head: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    --section-padding: 100px 20px;
    --container-width: 1200px;
    --transition: all 0.3s ease-in-out;
}

/* Global Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

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

h1, h2, h3, h4 { font-family: var(--font-head); color: var(--white); }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; display: block; border-radius: 8px; }

/* Utilities */
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }
.text-center { text-align: center; }
.accent-text { color: var(--accent); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-size: 2.5rem; margin-bottom: 15px; }
.section-header p { color: var(--text-gray); max-width: 600px; margin: 0 auto; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    background: var(--accent);
    color: var(--white);
    font-weight: 600;
    border-radius: 50px;
    box-shadow: 0 4px 15px var(--accent-glow);
    border: 2px solid transparent;
    cursor: pointer;
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 10px 25px var(--accent-glow); }
.btn-outline { background: transparent; border: 2px solid var(--white); box-shadow: none; }
.btn-outline:hover { background: var(--white); color: var(--primary); }

/* Navigation */
.navbar { position: fixed; top: 0; width: 100%; padding: 20px 0; z-index: 1000; transition: var(--transition); }
.navbar.scrolled { background: rgba(15, 23, 42, 0.95); backdrop-filter: blur(10px); padding: 15px 0; box-shadow: 0 5px 20px rgba(0,0,0,0.2); }
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.8rem; font-weight: 800; font-family: var(--font-head); letter-spacing: -1px; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--text-gray); }
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.mobile-toggle { display: none; font-size: 1.5rem; cursor: pointer; }

/* Mobile Menu */
@media (max-width: 768px) {
    .nav-links {
        position: absolute; top: 100%; left: 0; width: 100%;
        background: var(--secondary); flex-direction: column;
        padding: 20px; gap: 20px; text-align: center;
        transform: translateY(-150%); transition: var(--transition); z-index: -1;
    }
    .nav-links.active { transform: translateY(0); box-shadow: 0 10px 30px rgba(0,0,0,0.3); }
    .mobile-toggle { display: block; }
}

/* Page Headers (Hero for subpages) */
.page-header {
    background: var(--secondary);
    padding: 150px 0 80px;
    text-align: center;
}
.page-header h1 { font-size: 3rem; margin-bottom: 10px; }

/* Sections (General) */
.section { padding: var(--section-padding); }
.bg-secondary { background: var(--secondary); }
.bg-primary { background: var(--primary); }

/* Grid Layouts */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }

/* Services Cards */
.service-card {
    background: var(--secondary); padding: 40px; border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.05); transition: var(--transition);
}
.service-card:hover { transform: translateY(-10px); border-color: var(--accent); box-shadow: 0 10px 40px rgba(0,0,0,0.2); }
.service-card i { font-size: 2.5rem; color: var(--accent); margin-bottom: 25px; }

/* Contact Form */
.form-group { margin-bottom: 20px; }
.form-control {
    width: 100%; padding: 15px; background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1); color: white; border-radius: 8px;
    font-family: var(--font-body);
}
.form-control:focus { outline: none; border-color: var(--accent); }

/* Footer */
footer { background: #0b1120; padding: 80px 20px 30px; border-top: 1px solid rgba(255,255,255,0.05); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; margin-bottom: 60px; }
.footer-col h4 { margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: var(--text-gray); font-size: 0.9rem; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { text-align: center; border-top: 1px solid rgba(255,255,255,0.05); padding-top: 30px; color: var(--text-gray); font-size: 0.85rem; }

/* Animations */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* Responsive Adjustments */
@media (max-width: 768px) {
    .grid-2, .grid-4 { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.5rem; }
}