/*
Theme Name: AB Neurotech
Theme URI: https://abneurotech.com
Author: Antigravity
Description: A modern, professional neurotech theme.
Version: 2.0
*/

:root {
    --bg-color: #121212;
    --bg-secondary: #1E1E1E;
    --text-color: #ffffff;
    --text-muted: #B0B0B0;
    --primary-color: #FFD700;
    /* Yellow */
    --primary-hover: #E5C100;
    --border-color: #333333;
    --font-main: 'Montserrat', sans-serif;
    --container-width: 1240px;
    --transition: all 0.3s ease;
}

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

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-weight: 700;
    color: #fff;
    margin-bottom: 1rem;
    line-height: 1.2;
}

a {
    color: #fff;
    text-decoration: none;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(18, 18, 18, 0.95);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title a {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.5px;
}

/* Navigation - FIXED */
.main-navigation ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.main-navigation a {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-color);
    letter-spacing: 0.5px;
}

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

.main-navigation .btn {
    margin-left: 1rem;
}

/* Hero Section (Homepage) */
.hero-section {
    height: 90vh;
    /* Full viewport height */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    /* Updated Image: Head with electrodes / Futuristic Cyborg */
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.8)), url('https://images.unsplash.com/photo-1593508512255-86ab42a8e620?auto=format&fit=crop&q=80&w=2000');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    /* Parallax effect */
}

/* Page Headers (Subpages) */
.page-hero {
    height: 50vh;
    /* Shorter header for subpages */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    margin-bottom: 4rem;
}

/* Common Overlay for readability */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(18, 18, 18, 0.3) 0%, rgba(18, 18, 18, 0.95) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 0 20px;
}

.hero-pretitle {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: #fff;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 2px;
    /* Square/Modern look */
    cursor: pointer;
    font-size: 0.9rem;
    letter-spacing: 1px;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary-color);
    color: #000;
    /* Black text on yellow */
}

.btn-primary:hover {
    background: var(--primary-hover);
    color: #000;
    transform: translateY(-2px);
}

.btn-outline {
    border: 2px solid #fff;
    color: #fff;
    background: transparent;
}

.btn-outline:hover {
    background: #fff;
    color: #000;
}

/* Section Styles */
.section {
    padding: 6rem 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

/* Modern Cards */
.card {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: 4px;
    transition: var(--transition);
    border: 1px solid transparent;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

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

/* Stats */
.stats-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
    display: block;
}

.stat-label {
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

/* Footer */
.site-footer {
    background: #000;
    padding: 5rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-widget h4 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    color: #fff;
}

.footer-widget ul {
    list-style: none;
}

.footer-widget a {
    color: var(--text-muted);
    font-size: 0.95rem;
    display: block;
    margin-bottom: 0.8rem;
}

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

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    color: #666;
    font-size: 0.85rem;
}

/* Form */
input,
textarea {
    width: 100%;
    padding: 1rem;
    background: #000;
    border: 1px solid var(--border-color);
    color: #fff;
    font-family: var(--font-main);
    margin-bottom: 1rem;
    border-radius: 2px;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Responsive */
@media (max-width: 900px) {

    .grid-2,
    .grid-3,
    .grid-4,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2.5rem;
    }
}