/* ============================================
   DESIGN SYSTEM & CSS VARIABLES
   ============================================ */
:root {
    /* Dark Theme (Default) */
    --bg: #030712;
    --bg-secondary: #0f172a;
    --card-bg: rgba(17, 24, 39, 0.7);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-hover-border: rgba(139, 92, 246, 0.4);

    --accent: #8b5cf6;
    --accent-hover: #a78bfa;
    --accent-glow: rgba(139, 92, 246, 0.2);

    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.1);

    --text-main: #f9fafb;
    --text-muted: #9ca3af;
    --text-dim: #6b7280;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    --gradient-accent: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    --gradient-hero: linear-gradient(to bottom right, #fff 30%, #94a3b8);

    /* Background Accents */
    --radial-purple: radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.15), transparent 40%);
    --radial-green: radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.1), transparent 40%);

    /* Typography */
    --font-primary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

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

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(139, 92, 246, 0.3);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme */
[data-theme="light"] {
    --bg: #f0f4ff;
    --bg-secondary: #e8eeff;
    --card-bg: rgba(255, 255, 255, 0.8);
    --card-border: rgba(99, 102, 241, 0.1);
    --card-hover-border: rgba(139, 92, 246, 0.4);

    --accent: #8b5cf6;
    --accent-hover: #7c3aed;
    --accent-glow: rgba(139, 92, 246, 0.15);

    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.1);

    --text-main: #1e293b;
    --text-muted: #475569;
    --text-dim: #9ca3af;

    --gradient-hero: linear-gradient(to bottom right, #7c3aed 30%, #a78bfa);

    --radial-purple: radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.04), transparent 50%);
    --radial-green: radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.03), transparent 50%);

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-main);
    background-color: var(--bg);
    background-image: var(--radial-purple), var(--radial-green);
    background-attachment: fixed;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

img {
    max-width: 100%;
    height: auto;
}

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

/* ============================================
   LAYOUT
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-3xl) 0;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(3, 7, 18, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    z-index: 1000;
    transition: all var(--transition-base);
}

/* Light mode nav override */
[data-theme="light"] .nav {
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
}

.logo-icon {
    font-size: 1.5rem;
}

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

.nav-link {
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
}

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

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

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

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-main);
    transition: all var(--transition-base);
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-left: var(--spacing-md);
}

.theme-toggle:hover {
    background: var(--card-hover-border);
    border-color: var(--accent);
    transform: scale(1.05);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    color: var(--text-main);
    transition: transform var(--transition-base);
}

.theme-toggle:hover svg {
    transform: rotate(20deg);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
    line-height: 1;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--text-main);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-main);
    transform: translateY(-2px);
}

.btn-hero {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-hero:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.btn-cta {
    padding: 1.25rem 2.5rem;
    font-size: 1.25rem;
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--shadow-xl);
}

.btn-cta:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(16, 185, 129, 0.4);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    top: -250px;
    right: -250px;
    animation: float 20s infinite ease-in-out;
}

.hero-background::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--success-glow) 0%, transparent 70%);
    bottom: -200px;
    left: -200px;
    animation: float 15s infinite ease-in-out reverse;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    50% {
        transform: translate(50px, 50px) rotate(180deg);
    }
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(99, 102, 241, 0.15));
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: var(--radius-2xl);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
    margin-bottom: var(--spacing-lg);
    font-size: 0.8125rem;
    font-weight: 600;
    color: #c4b5fd;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* Light mode badge text */
[data-theme="light"] .hero-badge {
    color: #475569;
}

.badge-icon {
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, var(--accent) 0%, #6366f1 100%);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

.badge-icon svg {
    color: #ffffff;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: var(--text-main);
}

.gradient-text {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--text-muted);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    max-width: 600px;
    margin: 0 auto;
}

.stat {
    padding: var(--spacing-md);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* ============================================
   SECTIONS
   ============================================ */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: var(--text-main);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
    background: transparent;
}

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

.service-card {
    background: var(--card-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--card-hover-border);
    background: rgba(17, 24, 39, 0.9);
}

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

.service-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-main);
}

.service-description {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.service-features {
    list-style: none;
    border-top: 1px solid var(--card-border);
    padding-top: var(--spacing-md);
}

.service-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-muted);
    position: relative;
    padding-left: 1.5rem;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */
.steps {
    display: grid;
    gap: var(--spacing-xl);
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    flex-shrink: 0;
    line-height: 1;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-main);
}

.step-description {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 1.125rem;
}

/* ============================================
   BENEFITS SECTION
   ============================================ */
.benefits {
    background: var(--bg-secondary);
    color: var(--text-main);
}

.benefits .section-title {
    color: var(--text-main);
}

.benefits-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
    align-items: center;
}

.benefit-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.benefit-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

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

.benefit-item p {
    color: var(--text-muted);
    line-height: 1.6;
}

.benefits-visual {
    display: grid;
    gap: var(--spacing-md);
}

.visual-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--card-border);
    text-align: center;
}

.visual-stat {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #34d399 0%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.visual-card p {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
    background: transparent;
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(16, 185, 129, 0.05));
    border: 1px solid var(--card-border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--text-main);
}

.cta-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xl);
}

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

.cta-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-muted);
    font-weight: 500;
}

.cta-feature svg {
    color: var(--success);
}

.cta-note {
    margin-top: var(--spacing-md);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    background: transparent;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-main);
}

.contact-methods {
    margin-top: var(--spacing-xl);
}

.contact-method {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    padding: var(--spacing-md);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
}

.contact-method:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
    border-color: var(--card-hover-border);
}

.contact-icon {
    font-size: 2rem;
}

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

.contact-value {
    font-weight: 600;
    color: var(--accent);
}

.contact-form-container {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 600;
    color: var(--text-main);
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-sm);
    border: 2px solid var(--card-border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-base);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
    background: rgba(255, 255, 255, 0.08);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--bg-secondary);
    color: var(--text-muted);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    border-top: 1px solid var(--card-border);
}

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

.footer-brand p {
    color: var(--text-dim);
    margin-top: var(--spacing-sm);
}

.footer-links {
    display: flex;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

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

.footer-column h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--text-main);
}

.footer-column a {
    color: var(--text-dim);
    font-size: 0.875rem;
}

.footer-column a:hover {
    color: var(--text-main);
}

.footer-bottom {
    border-top: 1px solid var(--card-border);
    padding-top: var(--spacing-md);
    text-align: center;
    color: var(--text-dim);
    font-size: 0.875rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero-cta {
        flex-direction: column;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .step {
        flex-direction: column;
        text-align: center;
    }

    .benefits-content {
        grid-template-columns: 1fr;
    }

    .cta-features {
        flex-direction: column;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }
}