:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #ec4899;
    --accent: #8b5cf6;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-light: #334155;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --gradient-hero: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-card: linear-gradient(145deg, rgba(30, 41, 59, 0.7) 0%, rgba(30, 41, 59, 0.4) 100%);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 16px 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text);
}

.logo img {
    height: 36px;
    width: 36px;
    border-radius: 8px;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.btn-primary {
    background: var(--primary);
    color: white !important;
    padding: 10px 24px;
    border-radius: 99px;
    font-weight: 600;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.23);
}

/* --- Hero Section --- */
.hero {
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

/* Background aesthetic blobs */
.hero::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.05) 50%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    z-index: -1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -50px;
    left: -150px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(236, 72, 153, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 540px;
    line-height: 1.7;
}

.btn-lg {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: white;
    color: var(--background);
    padding: 16px 36px;
    border-radius: 16px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-lg:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 25px -5px rgba(255, 255, 255, 0.1), 0 10px 10px -5px rgba(255, 255, 255, 0.04);
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
}

.phone-wrapper {
    width: 320px;
    height: 650px;
    background: #000;
    border-radius: 48px;
    border: 10px solid #2d2d2d;
    box-shadow: 0 0 0 2px #444, 0 50px 100px -20px rgba(0,0,0,0.5);
    overflow: hidden;
    position: relative;
    animation: float 6s ease-in-out infinite;
}

/* Placeholder screen content */
.screen-placeholder {
    width: 100%;
    height: 100%;
    background: var(--surface);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 60px;
    position: relative;
}

.screen-placeholder::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(99,102,241,0.1) 0%, transparent 40%);
    pointer-events: none;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* --- Tools Grid Section --- */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-tag {
    color: var(--accent);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    font-weight: 700;
    margin-bottom: 16px;
    display: block;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.tools-category {
    margin-bottom: 60px;
}

.category-title {
    font-size: 1.5rem;
    margin-bottom: 24px;
    padding-left: 16px;
    border-left: 4px solid var(--primary);
    color: var(--text);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.tool-card {
    background: var(--gradient-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 24px;
    border-radius: 20px;
    transition: all 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.tool-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    background: rgba(30, 41, 59, 0.8);
}

.tool-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 24px;
    flex-shrink: 0;
}

.tool-info h4 {
    font-size: 1.1rem;
    margin-bottom: 6px;
    font-weight: 600;
}

.tool-info p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* --- Features Split --- */
.feature-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-bottom: 120px;
}

.feature-split.reverse {
    direction: rtl; 
    /* Or verify grid order */
}
.feature-split.reverse .feature-text {
    direction: ltr;
}

.feature-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.feature-text p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--text);
}

.check-icon {
    color: var(--secondary);
    font-size: 1.25rem;
}

/* --- FAQ Section --- */
.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    gap: 20px;
}

.faq-item {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    overflow: hidden;
}

.faq-question {
    padding: 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.1rem;
}

.faq-answer {
    padding: 0 24px 24px;
    color: var(--text-muted);
    line-height: 1.7;
    display: none; /* JS toggle needed? Or just show all for static simplicity. Let's show all for now or use details/summary */
}

/* Let's use details/summary for native HTML behavior */
details.faq-item summary {
    list-style: none;
}
details.faq-item summary::-webkit-details-marker {
    display: none;
}
details[open] .faq-answer {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Footer --- */
.footer {
    background: #0b1120;
    padding: 80px 0 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 16px;
    max-width: 300px;
}

.footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 24px;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col a {
    color: var(--text-muted);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* --- Responsive --- */
@media (max-width: 968px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .feature-split {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .nav-links {
        display: none; /* Hide specifically for mobile for now if no JS menu */
    }
    
    .phone-wrapper {
        display: none; /* Hide 3D phone on mobile to save space/complexity */
    }
}