/* ===================================
   MOD SQUAD CAPITAL
   Premium Venture Platform Design
   =================================== */

/* Google Fonts - Inter */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ===================================
   CSS VARIABLES & ROOT STYLES
   =================================== */

:root {
    /* Color Palette */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #0d0d1a;
    --color-bg-card: rgba(20, 20, 30, 0.8);
    --color-accent-blue: #0A84FF;
    --color-accent-violet: #7C3AED;
    --color-accent-teal: #06B6D4;
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0b0;
    --color-text-muted: #6b7280;
    --color-border: rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 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);
    --shadow-glow-blue: 0 0 30px rgba(10, 132, 255, 0.3);
    --shadow-glow-violet: 0 0 30px rgba(124, 58, 237, 0.3);
}

/* ===================================
   RESET & BASE STYLES
   =================================== */

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

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

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

/* Animated Background Grid */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    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: 50px 50px;
    z-index: -1;
    opacity: 0.5;
}

/* Gradient Overlay Effect */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 20%, rgba(10, 132, 255, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(124, 58, 237, 0.05) 0%, transparent 50%);
    z-index: -1;
    pointer-events: none;
}

/* ===================================
   TYPOGRAPHY
   =================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

h1 {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 900;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 600;
}

p {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    line-height: 1.7;
    color: var(--color-text-secondary);
}

a {
    color: var(--color-accent-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-teal);
}

/* ===================================
   NAVIGATION
   =================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.nav.scrolled {
    background: rgba(10, 10, 10, 0.95);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
    transition: all var(--transition-fast);
}

.nav-logo:hover {
    color: var(--color-accent-blue);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    position: relative;
}

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

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

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

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

.nav-cta {
    padding: 0.625rem 1.5rem;
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-violet));
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-blue);
    color: var(--color-text-primary);
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-fast);
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-violet));
    color: var(--color-text-primary);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-blue);
    color: var(--color-text-primary);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-accent-blue);
}

.btn-secondary:hover {
    background: rgba(10, 132, 255, 0.1);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-blue);
    color: var(--color-text-primary);
}

.btn-group {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

/* ===================================
   SECTIONS
   =================================== */

section {
    padding: var(--spacing-xxl) var(--spacing-md);
    position: relative;
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-container.narrow {
    max-width: 900px;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.section-title {
    margin-bottom: 1.5rem;
}

.section-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

/* Animated Cyber Grid Background */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(10, 132, 255, 0.05) 2px, transparent 2px),
        linear-gradient(90deg, rgba(10, 132, 255, 0.05) 2px, transparent 2px);
    background-size: 100px 100px;
    animation: gridMove 20s linear infinite;
    opacity: 0.3;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(100px, 100px); }
}

/* Particle Network Effect */
.hero::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(10, 132, 255, 0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.8; }
}

.hero-content {
    text-align: center;
    z-index: 10;
    position: relative;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff, var(--color-accent-blue), var(--color-accent-violet));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   CARDS & GRID LAYOUTS
   =================================== */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: var(--spacing-lg);
}

.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 132, 255, 0.05), rgba(124, 58, 237, 0.05));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent-blue);
    box-shadow: var(--shadow-glow-blue);
}

.card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-violet));
    border-radius: var(--radius-md);
    font-size: 2rem;
    position: relative;
    z-index: 1;
}

.card-title {
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.card-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* ===================================
   LISTS & FEATURES
   =================================== */

.feature-list {
    list-style: none;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.feature-item:hover {
    border-color: var(--color-accent-blue);
    transform: translateX(8px);
}

.feature-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--color-accent-blue);
    font-size: 1.5rem;
}

.feature-content h4 {
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
}

.feature-content p {
    color: var(--color-text-secondary);
}

/* ===================================
   PILLARS / THREE COLUMN LAYOUT
   =================================== */

.pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-top: var(--spacing-lg);
}

.pillar {
    text-align: center;
    padding: 2rem;
}

.pillar-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-violet));
    border-radius: 50%;
    font-size: 2.5rem;
    box-shadow: var(--shadow-glow-blue);
}

.pillar-title {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.pillar-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ===================================
   ALTERNATING CONTENT SECTIONS
   =================================== */

.content-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-top: var(--spacing-lg);
}

.content-split.reverse {
    direction: rtl;
}

.content-split.reverse > * {
    direction: ltr;
}

.content-text h3 {
    margin-bottom: 1.5rem;
}

.content-text p {
    margin-bottom: 1rem;
}

/* ===================================
   FOOTER
   =================================== */

.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) var(--spacing-md);
    margin-top: var(--spacing-xxl);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

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

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    border-color: var(--color-accent-blue);
    color: var(--color-accent-blue);
    transform: translateY(-3px);
}

.footer-links h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ===================================
   CONTACT FORM
   =================================== */

.contact-form {
    max-width: 600px;
    margin: var(--spacing-lg) auto 0;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 3rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.875rem 1.25rem;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent-blue);
    box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-submit {
    width: 100%;
    margin-top: 1rem;
}

/* ===================================
   UTILITY CLASSES
   =================================== */

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

.text-gradient {
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-violet));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mb-4 { margin-bottom: 4rem; }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mt-4 { margin-top: 4rem; }

/* Fade In Animation on Scroll */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

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

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 73px;
        left: -100%;
        flex-direction: column;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        width: 100%;
        padding: 2rem;
        gap: 1.5rem;
        transition: left var(--transition-normal);
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .content-split {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .pillars {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
}

@media (max-width: 640px) {
    .hero {
        min-height: 90vh;
    }
    
    .btn-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 2rem 1.5rem;
    }
}