/* -------------------------------------
   CSS Custom Properties & Reset
---------------------------------------- */
:root {
    --primary: #1e3a8a;       /* Deep high-trust navy */
    --primary-light: #2563eb; /* Active blue */
    --dark: #0f172a;          /* Slate dark */
    --light: #f8fafc;         /* Off-white background */
    --gray: #64748b;          /* Text gray */
    --border: #e2e8f0;        /* Card dividers */
    --white: #ffffff;
    --font: 'Inter', sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    color: var(--dark);
    background-color: var(--white);
    line-height: 1.6;
}

/* Utilities */
.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 48px auto;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--dark);
}

.section-header p {
    color: var(--gray);
    font-size: 1.1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 6px;
    transition: var(--transition);
    cursor: pointer;
    font-size: 0.95rem;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-light);
}

.btn-secondary {
    background-color: transparent;
    color: var(--dark);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background-color: var(--light);
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

/* -------------------------------------
   Component Styling
---------------------------------------- */

/* Navbar */
.navbar {
    height: 80px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    text-decoration: none;
    letter-spacing: -0.5px;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a:not(.btn) {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:not(.btn):hover {
    color: var(--primary);
}

/* Hero */
.hero {
    padding: 100px 0;
    background: radial-gradient(circle at 90% 10%, #eff6ff 0%, var(--white) 60%);
}

.hero-content {
    max-width: 650px;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.15;
    font-weight: 700;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

/* Services */
.services {
    padding: 100px 0;
    background-color: var(--light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.service-card {
    background-color: var(--white);
    padding: 40px;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px -10px rgba(15, 23, 42, 0.08);
}

.service-icon {
    font-size: 2rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.35rem;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* About */
.about {
    padding: 120px 0;
}

.about-content {
    max-width: 750px;
    margin: 0 auto;
    text-align: center;
}

.about h2 {
    font-size: 2.25rem;
    margin-bottom: 24px;
}

.about p {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 20px;
}

/* Contact */
.contact {
    padding: 100px 0;
    background-color: var(--light);
}

.contact-box {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--white);
    padding: 48px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: var(--font);
    font-size: 1rem;
    color: var(--dark);
    background-color: var(--white);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Footer */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    text-align: center;
    background-color: var(--white);
}

.footer p {
    font-size: 0.9rem;
    color: var(--gray);
}

/* -------------------------------------
   Responsive Design Breakpoints
---------------------------------------- */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    .hero-actions {
        flex-direction: column;
    }
    .contact-box {
        padding: 32px 24px;
    }
    .navbar .btn {
        display: none; /* Simplifies nav layout on mobile views */
    }
}