/* =====================================================
   VENANTI - Corporate Website Design System
   Minimalistic black, white & grey theme
   ===================================================== */

/* ============= CSS VARIABLES ============= */
:root {
    /* Monochrome Palette */
    --color-white: #ffffff;
    --color-grey-100: #f5f5f5;
    --color-grey-200: #e5e5e5;
    --color-grey-300: #d4d4d4;
    --color-grey-400: #a3a3a3;
    --color-grey-500: #737373;
    --color-grey-600: #525252;
    --color-grey-700: #404040;
    --color-grey-800: #262626;
    --color-grey-900: #171717;
    --color-black: #0a0a0a;

    /* Semantic Colors */
    --color-primary: #ffffff;
    --color-accent: #a3a3a3;

    /* Dark Mode Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #171717;
    --bg-tertiary: #262626;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.65);
    --text-tertiary: rgba(255, 255, 255, 0.4);
    --text-muted: rgba(255, 255, 255, 0.25);

    /* Border & Effects */
    --border-color: rgba(255, 255, 255, 0.1);
    --glass-blur: blur(20px);

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============= RESET & BASE ============= */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ============= TYPOGRAPHY ============= */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 1.75rem);
}

h4 {
    font-size: 1.25rem;
}

p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.7;
}

.text-accent {
    color: var(--color-primary);
}

/* ============= BACKGROUNDS ============= */
.bg-gradient {
    position: fixed;
    inset: 0;
    background: linear-gradient(180deg, #0a0a0a 0%, #171717 50%, #1a1a1a 100%);
    z-index: -3;
}

.bg-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: -2;
}

.blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.08;
    z-index: -1;
    animation: float 20s ease-in-out infinite;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: #ffffff;
    top: -150px;
    right: -100px;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: #737373;
    bottom: -100px;
    left: -100px;
    animation-delay: -10s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30px, -30px) scale(1.05);
    }

    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }

    75% {
        transform: translate(40px, 10px) scale(1.02);
    }
}

/* ============= LAYOUT ============= */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
}

.section-header h2 {
    margin-bottom: var(--space-md);
}

/* ============= NAVIGATION ============= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    background: rgba(15, 15, 20, 0.8);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--color-white);
    color: var(--color-black);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.25rem;
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-white);
    transition: width var(--transition-base);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

.nav-mobile {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(15, 15, 20, 0.98);
    padding: var(--space-lg);
    flex-direction: column;
    gap: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.nav-mobile.active {
    display: flex;
}

@media (max-width: 768px) {

    .nav-links,
    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }
}

/* ============= BUTTONS ============= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--color-white);
    color: var(--color-black);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    opacity: 0.9;
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.125rem;
}

/* ============= HERO ============= */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero h1 {
    margin-bottom: var(--space-xl);
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto var(--space-2xl);
}

.hero-cta {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-3xl);
}

.hero-stats {
    display: flex;
    gap: var(--space-3xl);
    justify-content: center;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* ============= ABOUT ============= */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
}

.about-content h3 {
    margin-bottom: var(--space-lg);
}

.about-content p {
    margin-bottom: var(--space-lg);
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.value-item {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
}

.value-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.value-item h4 {
    margin-bottom: var(--space-xs);
}

.value-item p {
    font-size: 0.95rem;
    margin: 0;
}

/* Neural Network Visual */
.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.neural-network {
    position: relative;
    width: 300px;
    height: 300px;
}

.node {
    position: absolute;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.node-1 {
    top: 10%;
    left: 20%;
    animation-delay: 0s;
}

.node-2 {
    top: 30%;
    right: 15%;
    animation-delay: 0.4s;
}

.node-3 {
    bottom: 30%;
    left: 10%;
    animation-delay: 0.8s;
}

.node-4 {
    bottom: 10%;
    right: 25%;
    animation-delay: 1.2s;
}

.node-5 {
    top: 50%;
    left: 50%;
    animation-delay: 1.6s;
}

.node-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--color-white);
    color: var(--color-black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    box-shadow: 0 0 60px rgba(255, 255, 255, 0.2);
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.6;
    }

    50% {
        transform: scale(1.5);
        opacity: 1;
    }
}

/* ============= PRODUCTS ============= */
.product-showcase {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-2xl);
}

@media (max-width: 900px) {
    .product-showcase {
        grid-template-columns: 1fr;
    }
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    position: relative;
    transition: all var(--transition-base);
}

.product-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.product-card.featured {
    border-color: var(--color-primary);
}

.product-badge {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    background: var(--color-white);
    color: var(--color-black);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.product-icon {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
}

.product-card h3 {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.product-tagline {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--space-lg);
}

.product-description {
    margin-bottom: var(--space-xl);
}

.product-features {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.product-features li {
    padding: var(--space-sm) 0;
    color: var(--text-secondary);
}

.coming-soon-card {
    background: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.coming-soon-card .product-icon {
    opacity: 0.5;
}

.coming-soon-card h4 {
    color: var(--text-tertiary);
}

.coming-soon-card p {
    font-size: 0.95rem;
}

/* ============= RESEARCH ============= */
.research-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

@media (max-width: 768px) {
    .research-grid {
        grid-template-columns: 1fr;
    }
}

.research-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.research-card:hover {
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.research-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-lg);
}

.research-card h3 {
    margin-bottom: var(--space-md);
    font-size: 1.25rem;
}

.research-card p {
    font-size: 0.95rem;
}

/* ============= CONTACT ============= */
.contact {
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    margin: 0 var(--space-lg);
}

.contact-content {
    text-align: center;
}

.contact-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-3xl);
}

@media (max-width: 768px) {
    .contact-options {
        grid-template-columns: 1fr;
    }
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-decoration: none;
    transition: all var(--transition-base);
}

.contact-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.contact-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

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

.contact-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.contact-email {
    font-size: 1rem;
    color: var(--text-tertiary);
}

/* ============= FOOTER ============= */
.footer {
    padding: var(--space-4xl) 0 var(--space-2xl);
    border-top: 1px solid var(--border-color);
    margin-top: var(--space-4xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

.footer-brand p {
    margin-top: var(--space-md);
    font-size: 0.95rem;
}

.footer-links-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.footer-title {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-lg);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* ============= ANIMATIONS ============= */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}