/* -------------------------------------------------------------
 * Stylesheet: BrainUI Solutions Website
 * Theme: Custom Warm Editorial Theme (Shadcn / Luma Style)
 * Fonts: Outfit (Headings), Inter (Body)
 * Font Weights Used: 400, 500, 600 only
 * ------------------------------------------------------------- */

/* --- Design Tokens --- */
:root {
    /* Colors - Warm Sand & Royal Blue Palette */
    --color-bg: #F7F7F4;          /* Warm sand off-white */
    --color-bg-subtle: #F0EEE9;   /* Linen warm white */
    --color-border: #E3E2D9;      /* Light gray-khaki */
    --color-border-hover: #A9A49F;/* Medium warm gray */
    --color-text: #313131;        /* Charcoal slate for body copy */
    --color-text-muted: #7A7771;  /* Slate warm gray for subtext */
    --color-text-dark: #191919;   /* Deep rich black for headers */
    
    --color-primary: #1647B3;     /* Deep Royal Blue accent */
    --color-primary-hover: #123b96;
    --color-danger: #CC1C11;      /* Vibrant alert red */
    
    /* Layout & Sizing */
    --border-radius: 6px;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    font-weight: 400;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    color: var(--color-text-dark);
    font-weight: 600; /* Capped at 600 weight */
    line-height: 1.25;
}

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

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--border-radius);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-border-hover);
}

/* --- Layout Utility --- */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.grid {
    display: grid;
    gap: 2rem;
}

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

@media (max-width: 768px) {
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

.w-full { width: 100%; }
.text-center { text-align: center; }
.items-center { align-items: center; }
.hidden { display: none !important; }

/* --- Background Canvas --- */
#three-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    opacity: 0.8;
}

/* --- Buttons (Shadcn-style) --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.6rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 9999px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
}

.btn-sm {
    padding: 0.4rem 1.2rem;
    font-size: 0.75rem;
}

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

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

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

.btn-secondary:hover {
    background-color: var(--color-bg-subtle);
    border-color: var(--color-border-hover);
}

/* --- Sticky Navigation --- */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(247, 247, 244, 0.8); /* Match warm background */
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.main-header.scrolled {
    background: rgba(247, 247, 244, 0.95);
    border-bottom: 1px solid var(--color-border-hover);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 1.15rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--color-text-dark);
}

.logo-img {
    display: block;
    height: 24px;
    width: auto;
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.nav-link:hover, .nav-link.active {
    color: var(--color-text-dark);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 20px;
    height: 14px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 110;
}

.hamburger-line {
    width: 100%;
    height: 1.5px;
    background-color: var(--color-text-dark);
    transition: var(--transition);
}

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }
    .mobile-menu-toggle {
        display: flex;
    }
}

/* --- Mobile Drawer --- */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 280px;
    height: 100vh;
    background: var(--color-bg);
    z-index: 99;
    padding: 80px 1.5rem 1.5rem;
    border-left: 1px solid var(--color-border);
    transition: right 0.3s ease-out;
}

.mobile-drawer.open {
    right: 0;
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.mobile-nav-link {
    font-size: 1.1rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--color-text-dark);
}

.drawer-action {
    margin-top: 1.5rem;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* --- Hero Section --- */
.hero-section {
    min-height: 75vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}

.hero-content {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--color-border);
    padding: 0.3rem 0.8rem;
    border-radius: 30px;
    margin-bottom: 1.5rem;
    background-color: var(--color-bg-subtle);
}

.badge-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.hero-title {
    font-size: 3rem;
    font-weight: 600;
    letter-spacing: -1px;
    margin-bottom: 1.2rem;
    color: var(--color-text-dark);
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* --- Section Layout --- */
.section {
    padding: 5rem 0;
    border-top: 1px solid var(--color-border);
}

.section-tag {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 1.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text-dark);
}

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

.section-header {
    max-width: 600px;
    margin-bottom: 3rem;
}

/* --- About Section --- */
.about-info p {
    margin-bottom: 1.2rem;
}

.startup-banner {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 1.2rem;
    background-color: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    margin-top: 2rem;
}

.startup-logo {
    height: 48px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
}

.startup-text strong {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-dark);
    font-weight: 600;
}

.startup-text span {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.about-stats-container {
    display: flex;
    justify-content: center;
}

.stats-card {
    width: 100%;
    padding: 2rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-bg-subtle);
}

.stats-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.stats-card p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.divider {
    margin: 1.5rem 0;
    border: none;
    border-top: 1px solid var(--color-border);
}

/* --- Products Section (SuperAudit Browser Mockup) --- */
.mockup-frame {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: #ffffff;
}

.mockup-header {
    background-color: var(--color-bg-subtle);
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    min-height: 28px;
}

.mockup-title {
    font-size: 0.7rem;
    color: var(--color-text-muted);
}

.mockup-image {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
    border-bottom-left-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
}

.product-tagline {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.product-details p {
    margin-bottom: 1.5rem;
}

.features-list {
    margin-bottom: 2rem;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.check-icon {
    color: var(--color-primary);
}

.service-card {
    padding: 2rem 1.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: #ffffff;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--color-primary);
    background-color: #ffffff;
    box-shadow: 0 4px 12px rgba(25, 25, 25, 0.03);
}

.service-card h4 {
    font-size: 1.05rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.service-card p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* --- Contact Section --- */
.contact-description {
    max-width: 580px;
    margin: 0 auto 2.5rem;
}

.contact-box {
    display: inline-block;
    padding: 2rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-bg-subtle);
}

.contact-email {
    font-size: 1.45rem;
    font-weight: 600;
    color: var(--color-primary);
}

.contact-email:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

.contact-sub {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 0.5rem;
}

/* --- Footer --- */
.main-footer {
    border-top: 1px solid var(--color-border);
    padding: 2.5rem 0;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

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

.footer-links {
    display: flex;
    gap: 1.5rem;
}

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

@media (max-width: 576px) {
    .footer-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}