:root {
    --bg: #000000;
    --card-bg: #0d0d0d;
    --card-border: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --accent: #9333ea; /* Purple Accent */
    --accent-hover: #a855f7;
    --accent-glow: rgba(147, 51, 234, 0.15);
    --font-sans: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Mockup Colors from Screenshot */
    --mk-topbar: #0b0b0b;
    --mk-sidebar: #0f0f0f;
    --mk-editor: #141414;
    --mk-border: #222222;
    --mk-text: #b0b0b0;
    --mk-text-light: #ffffff;
    --mk-btn: #1a1a1a;
    --mk-btn-hover: #2a2a2a;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Ambient Glows */
.ambient-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(150px);
    z-index: -1;
    pointer-events: none;
}

.left-glow {
    top: -100px;
    left: -300px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
}

.right-glow {
    top: 20%;
    right: -300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    background: rgba(0, 0, 0, 0.5);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

.logo img {
    height: 28px;
    border-radius: 6px;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
}

.btn.primary {
    background-color: var(--accent);
    color: white;
    border: 1px solid transparent;
}

.btn.primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 0 20px rgba(147, 51, 234, 0.3);
}

.btn.secondary {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}

.btn.secondary:hover {
    background-color: #161616;
}

.btn.outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}

.btn.outline:hover {
    background-color: var(--card-bg);
}

/* Hero */
.hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 5rem;
}

/* Advanced App Mockup - Screenshot Accurate */
.hero-mockup {
    width: 100%;
    max-width: 900px;
    perspective: 1000px;
}

.mockup-window {
    background-color: var(--mk-sidebar);
    border: 1px solid #333;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(255,255,255,0.02);
    font-family: var(--font-mono);
    text-align: left;
    display: flex;
    flex-direction: column;
}

/* App Topbar */
.app-topbar {
    height: 40px;
    background-color: var(--mk-topbar);
    border-bottom: 1px solid var(--mk-border);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 10px;
}

.app-top-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.app-logo {
    height: 22px;
    border-radius: 50%;
    margin-right: 5px;
}

.app-tab-btn {
    background: transparent;
    color: var(--mk-text);
    border: none;
    padding: 4px 14px;
    border-radius: 12px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    cursor: pointer;
}

.app-tab-btn.active {
    background-color: #1a1a1a;
    color: var(--mk-text-light);
}

.app-top-center {
    color: #555;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-align: center;
}

.app-top-right {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    color: #555;
}

.app-control-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

/* App Main Body */
.app-main {
    display: flex;
    height: 380px;
}

/* App Sidebar */
.app-sidebar {
    width: 220px;
    background-color: var(--mk-sidebar);
    border-right: 1px solid var(--mk-border);
    padding: 15px 10px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--mk-text-light);
    font-size: 0.85rem;
    margin-bottom: 5px;
}

.sidebar-file {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #777;
    font-size: 0.8rem;
    padding-left: 10px;
}

.bracket {
    color: #555;
}

/* App Editor Area */
.app-editor-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--mk-editor);
}

.editor-tabs {
    display: flex;
    align-items: center;
    background-color: var(--mk-sidebar);
    padding: 6px 10px 0;
    gap: 4px;
    border-bottom: 1px solid var(--mk-border);
}

.e-tab {
    display: flex;
    align-items: center;
    gap: 6px;
    background-color: transparent;
    color: #666;
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 6px 6px 0 0;
    cursor: pointer;
}

.e-tab.active {
    background-color: #2a2a2a;
    color: var(--mk-text-light);
    border: 1px solid var(--mk-border);
    border-bottom: none;
}

.tab-close {
    font-size: 0.7rem;
    margin-left: 8px;
    color: #999;
}

.e-tab-add {
    color: #666;
    padding: 4px 8px;
    font-size: 1rem;
    cursor: pointer;
}

.code-area {
    flex: 1;
    padding: 15px 0;
    overflow-y: hidden;
}

.code-line {
    display: flex;
    font-size: 0.85rem;
    color: #d4d4d4;
    line-height: 1.6;
}

.line-num {
    color: #555;
    width: 40px;
    text-align: right;
    padding-right: 15px;
    user-select: none;
}

.c-fn { color: #56b6c2; } /* print is cyan in screenshot */
.c-str { color: #e5c07b; } /* "Hello" is yellow/orange in screenshot */

.editor-bottom-bar {
    height: 35px;
    border-top: 1px solid var(--mk-border);
    border-bottom: 1px solid var(--mk-border);
    display: flex;
    align-items: center;
    padding: 0 15px;
    color: #666;
    font-size: 0.8rem;
}

.tabs-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-sm {
    cursor: pointer;
}

/* App Actions */
.app-actions {
    display: flex;
    justify-content: space-between;
    padding: 10px 15px;
    background-color: var(--mk-sidebar);
}

.actions-left, .actions-right {
    display: flex;
    gap: 10px;
}

.app-btn {
    background-color: var(--mk-btn);
    color: var(--mk-text-light);
    border: none;
    padding: 6px 16px;
    border-radius: 12px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    cursor: pointer;
    transition: background 0.2s;
}

.app-btn:hover {
    background-color: var(--mk-btn-hover);
}

/* Output Area */
.app-output {
    height: 70px;
    border-top: 1px solid var(--mk-border);
    background-color: var(--mk-sidebar);
    padding: 10px 15px;
    display: flex;
    justify-content: space-between;
    color: var(--mk-text-light);
    font-size: 0.85rem;
}

.output-icon {
    color: #555;
}

/* Features */
.features-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 8rem 2rem;
}

.section-heading {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 4rem;
    letter-spacing: -0.03em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.feature-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: #2a2a2a;
    background-color: #111111;
}

.feature-icon {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    background-color: #1a1a1a;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.feature-badge {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    padding: 4px 10px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Footer */
footer {
    border-top: 1px solid var(--card-border);
    background-color: #000;
    padding: 3rem 2rem;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-left img {
    height: 24px;
    opacity: 0.5;
}

.footer-left p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
}

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

/* Responsive */
@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .app-sidebar {
        display: none;
    }
    
    .footer-inner {
        flex-direction: column;
        gap: 1.5rem;
    }
}

/* Download Page */
.download-hero {
    min-height: 75vh;
    justify-content: center;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    gap: 12px;
}

.security-notice {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--card-border);
    border-radius: 100px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 2rem;
}

.security-notice svg {
    color: #ef4444;
}