:root {
    --bg-color: #0f172a;
    /* Slate 900 */
    --text-color: #f1f5f9;
    /* Slate 100 */
    --text-muted: #94a3b8;
    /* Slate 400 */
    --primary-color: #38bdf8;
    /* Sky 400 */
    --secondary-color: #6366f1;
    /* Indigo 500 */
    --surface-color: rgba(30, 41, 59, 0.7);
    /* Slate 800 */
    --border-color: rgba(148, 163, 184, 0.1);
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Inter', sans-serif;
    /* Unified font family */
}

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

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

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    /* Tight, professional tracking */
    color: #ffffff;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    background: var(--primary-color);
    color: #0f172a;
    border-radius: 8px;
    /* Soft radius */
    text-decoration: none;
    font-weight: 600;
    border: none;
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
    background: #7dd3fc;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: #ffffff;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-top: -2.5rem;
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.03em;
}

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

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Hero Section */
.hero {
    min-height: 90vh;
    /* Slightly reduced form 100vh */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('assets/hero_bg.webp') no-repeat center center/cover;
    opacity: 0.15;
    /* Subtle background */
    z-index: -1;
    mix-blend-mode: luminosity;
    /* Keeps it strictly monochrome/blue */
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-muted);
}

/* Services */
.services {
    padding: 100px 0;
    background: #0f172a;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.service-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: 12px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border-color: rgba(56, 189, 248, 0.3);
}

.service-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 24px;
    background: rgba(56, 189, 248, 0.1);
    padding: 16px;
    border-radius: 12px;
}

.service-card h3 {
    margin-bottom: 12px;
    font-size: 1.25rem;
}

.service-card p {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Sales Placeholder */
.sales-dashboard-placeholder {
    padding: 100px 0;
    background: #0b1120;
    /* Slightly darker */
    text-align: center;
}

.placeholder-box {
    border: 1px dashed var(--border-color);
    padding: 60px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.01);
    margin-top: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.placeholder-box h3 {
    margin-top: 20px;
    margin-bottom: 10px;
    color: var(--text-color);
}

/* Contact */
.contact {
    padding: 100px 0;
    text-align: center;
    background: #0f172a;
}

.contact-form {
    max-width: 500px;
    margin: 0 auto;
    text-align: left;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: #1e293b;
    border: 1px solid var(--border-color);
    color: #fff;
    font-family: var(--font-main);
    border-radius: 8px;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.1);
}

footer {
    padding: 60px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-muted);
    background: #0f172a;
}

/* Trust Signals - Metrics */
.metrics-section {
    padding: 60px 0;
    background: #0b1120;
    border-bottom: 1px solid var(--border-color);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.metric-item h2 {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 700;
}

.metric-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Trust Signals - Process */
.process-section {
    padding: 100px 0;
    background: var(--bg-color);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
    position: relative;
}

.process-step {
    text-align: center;
    position: relative;
    padding: 20px;
    background: var(--surface-color);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.step-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    background: var(--primary-color);
    color: #0f172a;
    font-weight: bold;
    border-radius: 50%;
    margin-bottom: 20px;
}

.process-step h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.process-step p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Trust Signals - Tech Stack */
.tech-section {
    padding: 80px 0;
    background: #0f172a;
    text-align: center;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 40px;
    align-items: center;
    margin-top: 40px;
    opacity: 0.7;
}

.tech-item {
    font-size: 1.5rem;
    color: var(--text-muted);
    font-weight: 600;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s;
}

.tech-item:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-5px);
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
        /* Simple mobile menu placeholder */
    }

    .metrics-grid,
    .process-timeline {
        grid-template-columns: 1fr;
    }

    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}