:root {
    /* Colors */
    --bg-dark: #0a0f1c;
    --bg-dark-secondary: #0f1629;
    --primary: #3b82f6;
    /* Royal Blue */
    --primary-glow: rgba(59, 130, 246, 0.5);
    --accent: #f59e0b;
    /* Gold/Amber */
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --container-width: 1200px;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

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

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

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--white);
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

.max-width-small {
    max-width: 800px;
}

/* Utilities */
.text-center {
    text-align: center;
}

.text-light {
    color: var(--text-muted);
}

.text-white {
    color: var(--white);
}

.mt-small {
    margin-top: var(--spacing-sm);
}

.mt-medium {
    margin-top: var(--spacing-md);
}

.mt-large {
    margin-top: var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 500;
    letter-spacing: 0.5px;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #2563eb);
    color: white;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    margin-left: 1rem;
}

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

.btn-sm {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
}

.btn-large {
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    backdrop-filter: blur(10px);
    background: rgba(10, 15, 28, 0.8);
    border-bottom: 1px solid var(--glass-border);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.dot {
    color: var(--primary);
}

.nav-links a {
    margin-left: 2rem;
    font-size: 0.95rem;
    color: var(--text-muted);
}

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

.nav-links .btn {
    color: white;
    margin-left: 2rem;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--white);
    margin: 6px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 180px 0 100px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
}

.badge {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--primary);
    display: inline-block;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(90deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-bg-glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(10, 15, 28, 0) 70%);
    z-index: 1;
    pointer-events: none;
}

/* Sections */
.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Glass Cards (Identity & Problem) */
.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

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

.identity-section h3 {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
}

.identity-section ul {
    list-style: none;
}

.identity-section li {
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.identity-section li strong {
    color: var(--white);
}

.icon {
    margin-right: 0.5rem;
}

/* Problem Section */
.feature-box {
    background: var(--bg-dark-secondary);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    transition: transform 0.3s;
}

.feature-box:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.icon-box {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.alert-box {
    background: rgba(239, 68, 68, 0.1);
    border-left: 4px solid #ef4444;
    padding: 1rem;
    border-radius: 4px;
    text-align: left;
    max-width: 600px;
    margin: 2rem auto 0;
}

/* Solution Section - Darker BG */
.dark-bg {
    background-color: #05080f;
}

.split-layout {
    display: flex;
    gap: 4rem;
    align-items: center;
}

.split-layout .content {
    flex: 1;
}

.split-layout .visual {
    flex: 1;
}

.check-list {
    list-style: none;
}

.check-list li {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.check-icon {
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border: 1px solid var(--primary);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

/* Process Timeline (How it works) */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 4rem auto 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    height: 100%;
    width: 2px;
    background: var(--glass-border);
}

.timeline-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-number {
    width: 42px;
    height: 42px;
    background: var(--bg-dark);
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    z-index: 2;
    flex-shrink: 0;
}

/* FAQ */
.accordion {
    margin-top: 3rem;
}

.accordion-item {
    border-bottom: 1px solid var(--glass-border);
}

.accordion-header {
    width: 100%;
    padding: 1.5rem 0;
    background: none;
    border: none;
    color: var(--white);
    text-align: left;
    font-size: 1.1rem;
    font-family: var(--font-heading);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
}

.accordion-header:after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding-bottom: 0;
}

.accordion-content p {
    color: var(--text-muted);
    padding-bottom: 1.5rem;
}

.accordion-item.active .accordion-content {
    max-height: 200px;
}

.accordion-item.active .accordion-header:after {
    content: '-';
}

/* Footer */
footer {
    padding: 4rem 0;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
    font-size: 0.9rem;
    background: var(--bg-dark-secondary);
}

.footer-layout {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-links {
    margin-top: 1rem;
    display: flex;
    gap: 1.5rem;
}

.footer-contact h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.footer-contact p {
    line-height: 1.6;
}

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

.mb-small {
    margin-bottom: 0.5rem;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

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

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .mobile-menu-btn {
        display: block;
        z-index: 1001;
    }

    .nav-links {
        display: none;
        /* Hidden by default */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-dark-secondary);
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid var(--glass-border);
        text-align: center;
    }

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

    .nav-links a {
        margin: 0 0 1.5rem 0;
        display: block;
        font-size: 1.1rem;
    }

    .nav-links .btn {
        margin: 0;
        width: 100%;
        text-align: center;
    }

    /* Mobile Menu Placeholder */
    .grid-2,
    .grid-3,
    .split-layout {
        grid-template-columns: 1fr;
        display: grid;
        gap: 2rem;
    }

    .split-layout .visual {
        display: none;
    }

    .container {
        padding: 0 1.5rem;
    }
}