/* Neximo Design System - Connected Minimalism */

/* ============================================
   DESIGN TOKENS
   ============================================ */

:root {
    /* Colors */
    --midnight-navy: #0B1220;
    --soft-white: #F9FAFB;
    --electric-blue: #3B82F6;
    --blue-hover: #2563EB;
    --blue-light: #DBEAFE;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    
    /* Typography */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Sora', var(--font-body);
    
    /* Spacing */
    --spacing-xs: 0.5rem;    /* 8px */
    --spacing-sm: 0.75rem;   /* 12px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    --spacing-3xl: 4rem;     /* 64px */
    --spacing-4xl: 6rem;     /* 96px */
    --spacing-5xl: 8rem;     /* 128px */
    
    /* Radius */
    --radius-sm: 0.375rem;   /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--soft-white);
}

::selection {
    background-color: var(--blue-light);
    color: var(--midnight-navy);
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--midnight-navy);
}

h1 { font-size: 3.5rem; }      /* 56px */
h2 { font-size: 2.5rem; }      /* 40px */
h3 { font-size: 1.75rem; }     /* 28px */
h4 { font-size: 1.25rem; }     /* 20px */

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }  /* 40px */
    h2 { font-size: 2rem; }    /* 32px */
    h3 { font-size: 1.5rem; }  /* 24px */
}

/* ============================================
   LAYOUT
   ============================================ */

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

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

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(249, 250, 251, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--midnight-navy);
    text-decoration: none;
    transition: opacity var(--transition-base);
}

.logo:hover {
    opacity: 0.8;
}

.logo svg {
    color: var(--electric-blue);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-600);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

.btn-nav {
    padding: var(--spacing-sm) var(--spacing-lg) !important;
    background: var(--midnight-navy) !important;
    color: var(--soft-white) !important;
    border-radius: var(--radius-md);
    transition: all var(--transition-base) !important;
}

.btn-nav:hover {
    background: var(--gray-800) !important;
    transform: translateY(-1px);
}

.btn-nav-login {
    padding: var(--spacing-sm) var(--spacing-lg) !important;
    background: transparent !important;
    color: var(--midnight-navy) !important;
    border: 1.5px solid var(--midnight-navy) !important;
    border-radius: var(--radius-md);
    transition: all var(--transition-base) !important;
}

.btn-nav-login:hover {
    background: var(--midnight-navy) !important;
    color: var(--soft-white) !important;
    transform: translateY(-1px);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}

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

.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--electric-blue);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--blue-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
    border-color: var(--gray-400);
    background: var(--gray-50);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 16px;
}

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

.hero {
    position: relative;
    padding: calc(72px + var(--spacing-5xl)) var(--spacing-xl) var(--spacing-5xl);
    text-align: center;
    overflow: hidden;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    font-size: 14px;
    font-weight: 500;
    color: var(--electric-blue);
    background: var(--blue-light);
    border-radius: 9999px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--electric-blue);
    border-radius: 50%;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    font-size: 1.25rem;
    line-height: 1.7;
    color: var(--gray-600);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-4xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--gray-200);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--midnight-navy);
}

.stat-label {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 14px;
    color: var(--gray-500);
}

.hero-grid {
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image: 
        linear-gradient(var(--gray-200) 1px, transparent 1px),
        linear-gradient(90deg, var(--gray-200) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse 80% 50% at 50% 40%, black 40%, transparent 100%);
    opacity: 0.5;
}

@media (max-width: 768px) {
    .hero {
        padding: calc(72px + var(--spacing-3xl)) var(--spacing-lg) var(--spacing-3xl);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
}

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

.platform, .use-cases, .how-it-works {
    padding: var(--spacing-5xl) 0;
}

.section-header {
    max-width: 800px;
    margin: 0 auto var(--spacing-4xl);
    text-align: center;
}

.section-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-size: 13px;
    font-weight: 600;
    color: var(--electric-blue);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--blue-light);
    border-radius: var(--radius-md);
}

.section-title {
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--gray-600);
}

/* ============================================
   FEATURES GRID
   ============================================ */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-2xl);
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--electric-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-lg);
    color: var(--electric-blue);
    background: var(--blue-light);
    border-radius: var(--radius-md);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.6;
}

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

/* ============================================
   USE CASES
   ============================================ */

.use-cases {
    background: var(--gray-50);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.use-case-card {
    padding: var(--spacing-2xl);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.use-case-number {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 700;
    color: var(--electric-blue);
    background: var(--blue-light);
    border-radius: var(--radius-sm);
}

.use-case-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.use-case-card > p {
    margin-bottom: var(--spacing-lg);
    color: var(--gray-600);
}

.use-case-list {
    list-style: none;
}

.use-case-list li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--gray-600);
}

.use-case-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--electric-blue);
    font-weight: 600;
}

/* ============================================
   HOW IT WORKS
   ============================================ */

.steps-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
    align-items: center;
}

.step {
    padding: var(--spacing-2xl);
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    text-align: center;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    background: var(--electric-blue);
    border-radius: 50%;
}

.step h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.step p {
    color: var(--gray-600);
}

.step-connector {
    font-size: 1.5rem;
    color: var(--gray-400);
    font-weight: 300;
}

.architecture-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    padding: var(--spacing-2xl);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.arch-feature {
    display: flex;
    flex-direction: column;
    text-align: center;
}

.arch-feature strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--midnight-navy);
}

.arch-feature span {
    font-size: 14px;
    color: var(--gray-600);
}

@media (max-width: 1024px) {
    .steps-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .step-connector {
        display: none;
    }
    
    .architecture-features {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta-section {
    padding: var(--spacing-5xl) 0;
    background: var(--midnight-navy);
    color: white;
    text-align: center;
}

.cta-content h2 {
    margin-bottom: var(--spacing-md);
    color: white;
}

.cta-content p {
    margin-bottom: var(--spacing-2xl);
    font-size: 1.125rem;
    color: var(--gray-300);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

@media (max-width: 768px) {
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

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

.footer {
    padding: var(--spacing-4xl) 0 var(--spacing-2xl);
    background: var(--gray-900);
    color: var(--gray-400);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-4xl);
    margin-bottom: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid var(--gray-800);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
}

.footer-logo svg {
    color: var(--electric-blue);
}

.footer-brand p {
    color: var(--gray-500);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
}

.footer-column h4 {
    margin-bottom: var(--spacing-lg);
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-column a {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-column a:hover {
    color: white;
}

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

.footer-social {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-social a {
    color: var(--gray-400);
    transition: color var(--transition-base);
}

.footer-social a:hover {
    color: white;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
}

/* ============================================
   PROBLEM/SOLUTION SECTION
   ============================================ */

.problem-solution {
    padding: var(--spacing-5xl) 0;
    background: var(--gray-50);
}

.problem-solution-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
}

.problem-side, .solution-side {
    padding: var(--spacing-3xl);
    background: white;
    border-radius: var(--radius-xl);
}

.problem-side {
    border-left: 4px solid #EF4444;
}

.solution-side {
    border-left: 4px solid var(--electric-blue);
}

.problem-side h2, .solution-side h2 {
    margin-bottom: var(--spacing-2xl);
    font-size: 2rem;
}

.problem-list, .solution-list {
    list-style: none;
}

.problem-list li, .solution-list li {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--gray-200);
}

.problem-list li:last-child, .solution-list li:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.problem-icon, .solution-icon {
    flex-shrink: 0;
    font-size: 1.5rem;
}

.problem-list strong, .solution-list strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--midnight-navy);
    font-size: 1.125rem;
}

.problem-list p, .solution-list p {
    color: var(--gray-600);
    font-size: 0.9375rem;
}

@media (max-width: 1024px) {
    .problem-solution-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   USE CASE METRICS
   ============================================ */

.use-case-metric {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
}

.metric-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--electric-blue);
    margin-bottom: var(--spacing-xs);
}

.metric-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ============================================
   INDUSTRIES SECTION
   ============================================ */

.industries {
    padding: var(--spacing-5xl) 0;
    background: white;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.industry-card {
    padding: var(--spacing-2xl);
    text-align: center;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.industry-card:hover {
    background: var(--blue-light);
    transform: translateY(-4px);
}

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

.industry-card h4 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
    color: var(--midnight-navy);
}

.industry-card p {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ============================================
   WHY NOW SECTION
   ============================================ */

.why-now {
    padding: var(--spacing-5xl) 0;
    background: var(--gray-50);
}

.timeline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
}

.timeline-item {
    position: relative;
    padding: var(--spacing-2xl);
    background: white;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--electric-blue);
}

.timeline-year {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--electric-blue);
    background: var(--blue-light);
    border-radius: var(--radius-sm);
}

.timeline-item h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.timeline-item p {
    color: var(--gray-600);
    line-height: 1.6;
}

.timeline-item:last-child {
    border-left-color: #10B981;
}

.timeline-item:last-child .timeline-year {
    color: #10B981;
    background: #D1FAE5;
}

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