/* ===== CSS Variables ===== */
:root {
    /* Light Mode - App Palette */
    --color-primary: #c0b7c9;
    --color-primary-dark: #a89bb3;
    --color-primary-rgb: 192, 183, 201;
    
    /* App accent colors */
    --color-files: #D1DBCB;
    --color-agents: #EAD8DE;
    --color-space: #F9F1D2;
    --color-cleanup: #E1D5E3;
    
    /* Light theme */
    --color-bg: #F0F0F0;
    --color-bg-alt: #e8e8e8;
    --color-surface: #ffffff;
    --color-surface-elevated: #ffffff;
    --color-border: rgba(0, 0, 0, 0.06);
    --color-border-strong: rgba(0, 0, 0, 0.1);
    
    /* Text */
    --color-text: #2D3436;
    --color-text-secondary: #636E72;
    --color-text-muted: #8a8a8a;
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.4);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;
    
    /* Typography */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
    
    /* Transitions */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    --header-height: 72px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
}

/* Dark Mode - 1e1e1e Style */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #1e1e1e;
        --color-bg-alt: #252525;
        --color-surface: #2a2a2a;
        --color-surface-elevated: #333333;
        --color-border: rgba(255, 255, 255, 0.06);
        --color-border-strong: rgba(255, 255, 255, 0.12);
        --color-text: #e5e5e5;
        --color-text-secondary: #a0a0a0;
        --color-text-muted: #6a6a6a;
        --glass-bg: rgba(30, 30, 30, 0.85);
        --glass-border: rgba(255, 255, 255, 0.08);
    }
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }


/* ===== Animated Background ===== */
.bg-animation {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.bg-gradient-1, .bg-gradient-2, .bg-gradient-3 {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.bg-gradient-1 {
    width: 600px;
    height: 600px;
    background: var(--color-primary);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.bg-gradient-2 {
    width: 500px;
    height: 500px;
    background: var(--color-files);
    bottom: -150px;
    left: -100px;
    animation-delay: -7s;
}

.bg-gradient-3 {
    width: 400px;
    height: 400px;
    background: var(--color-agents);
    top: 50%;
    left: 50%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

@media (prefers-color-scheme: dark) {
    .bg-gradient-1, .bg-gradient-2, .bg-gradient-3 { opacity: 0.15; }
}

/* ===== Utilities ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-files), var(--color-agents));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (prefers-color-scheme: dark) {
    .gradient-text {
        background: linear-gradient(135deg, var(--color-primary), #d4cce0, var(--color-files));
        -webkit-background-clip: text;
        background-clip: text;
    }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.25rem;
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    transition: all 0.3s var(--ease-out-expo);
    white-space: nowrap;
}

.btn-xl {
    padding: 1rem 1.75rem;
    font-size: 0.9375rem;
    border-radius: var(--radius-lg);
}

.btn-hero {
    padding: 0.875rem 1.5rem;
    font-size: 0.875rem;
    border-radius: var(--radius-md);
}

.btn-primary {
    background: var(--color-text);
    color: var(--color-bg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border-strong);
}

.btn-secondary:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-text-muted);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border-strong);
}

.btn-ghost:hover {
    background: var(--color-surface);
    border-color: var(--color-text-muted);
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-md) 0;
    transition: all 0.4s var(--ease-out-expo);
}

.header.scrolled {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-mark {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-svg {
    width: 100%;
    height: 100%;
    color: var(--color-primary);
}

.logo-text {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

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

.nav-menu {
    display: none;
    align-items: center;
    gap: var(--space-md);
}

@media (min-width: 768px) {
    .nav-menu { display: flex; }
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

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

.nav-btn { display: none; }
@media (min-width: 768px) {
    .nav-btn { display: inline-flex; }
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

.menu-bar {
    width: 20px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.3s var(--ease-out-expo);
}

@media (min-width: 768px) {
    .menu-toggle { display: none; }
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    z-index: 99;
    padding: var(--space-xl);
    transform: translateX(100%);
    transition: transform 0.4s var(--ease-out-expo);
}

.mobile-menu.active { transform: translateX(0); }

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.mobile-link {
    font-size: 1.5rem;
    font-weight: 600;
}

@media (min-width: 768px) {
    .mobile-menu { display: none; }
}


/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-top: calc(var(--header-height) + var(--space-4xl));
    padding-bottom: var(--space-4xl);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.9); }
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.05;
    margin-bottom: var(--space-lg);
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-3xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border-strong);
}

@media (max-width: 640px) {
    .stat-divider { display: none; }
    .hero-stats { gap: var(--space-lg); }
}

/* Hero Preview */
.hero-preview {
    position: relative;
    max-width: 1200px;
    width: 100%;
    margin: var(--space-4xl) auto 0;
    padding: 0 var(--container-padding);
}

.preview-glow {
    position: absolute;
    inset: -80px;
    background: radial-gradient(ellipse at center, rgba(var(--color-primary-rgb), 0.25), transparent 70%);
    filter: blur(60px);
    z-index: -1;
}

.preview-window {
    background: #1e1e1e;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 
        0 0 0 1px rgba(255,255,255,0.05) inset,
        0 20px 50px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
}

.window-chrome {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: #252525;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.window-buttons {
    display: flex;
    gap: 8px;
    width: 60px;
}

.window-buttons span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.btn-close { background: #ff5f57; box-shadow: inset 0 0 2px rgba(0,0,0,0.2); }
.btn-minimize { background: #febc2e; box-shadow: inset 0 0 2px rgba(0,0,0,0.2); }
.btn-maximize { background: #28c840; box-shadow: inset 0 0 2px rgba(0,0,0,0.2); }

.window-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.demo-container {
    display: flex;
    height: 500px;
    background: #1e1e1e;
}

.demo-sidebar {
    width: 64px;
    background: #1a1a1a;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    padding: 20px 0;
    justify-content: space-between;
}

.sidebar-icon {
    width: 100%;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #444;
    cursor: pointer;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.sidebar-icon.active {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.05);
}

.demo-chat {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
    scrollbar-width: none;
}

.demo-chat::-webkit-scrollbar { display: none; }

.chat-message {
    max-width: 85%;
    display: flex;
    flex-direction: column;
    gap: 8px;
    animation: messageIn 0.4s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.message-user { align-self: flex-end; }
.message-assistant { align-self: flex-start; }

.message-bubble {
    padding: 12px 18px;
    border-radius: 18px;
    font-size: 0.9rem;
    line-height: 1.5;
    position: relative;
}

.message-user .message-bubble {
    background: #2d2d2d;
    color: #eee;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    border-bottom-right-radius: 4px;
}

.message-assistant .message-bubble {
    background: #252525;
    color: #ddd;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom-left-radius: 4px;
}

/* Embossed Tool Call Style */
.tool-call {
    width: 100%;
    background: #181818;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.03);
    box-shadow: 
        inset 0 1px 1px rgba(255,255,255,0.05),
        0 10px 30px rgba(0,0,0,0.3);
}

.tool-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.tool-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-size: 0.9rem;
}

.tool-icon.blue { background: rgba(59, 130, 246, 0.1); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.2); }
.tool-icon.purple { background: rgba(168, 85, 247, 0.1); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.2); }
.tool-icon.green { background: rgba(34, 197, 94, 0.1); color: #4ade80; border: 1px solid rgba(34, 197, 94, 0.2); }

.tool-name {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    color: #999;
    letter-spacing: 0.05em;
}

.tool-status {
    margin-left: auto;
    font-size: 0.65rem;
    color: #555;
    font-weight: 600;
    text-transform: uppercase;
}

.tool-content {
    padding: 15px;
}

.tool-content code {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #aaa;
    display: block;
    margin-bottom: 10px;
}

.tool-output {
    background: #111;
    padding: 12px;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: #777;
    border: 1px solid rgba(255, 255, 255, 0.02);
    line-height: 1.4;
}

.agent-status-msg {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 5px 0;
}

.agent-dot {
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-primary);
}

.agent-status-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: #666;
}

@keyframes messageIn {
    from { opacity: 0; transform: translateY(15px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Window Actions & Badge */
.window-actions {
    display: flex;
    align-items: center;
}

.agent-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(192, 183, 201, 0.1);
    color: var(--color-primary);
    padding: 4px 10px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Feature Grid Adjustments */
.features {
    padding: var(--space-5xl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .feature-hero {
        grid-column: span 2;
        grid-row: span 2;
    }
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all 0.4s var(--ease-out-expo);
}

.feature-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(var(--color-primary-rgb), 0.15);
}

.feature-visual {
    flex: 1;
}

.agent-demo-preview {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.tool-call-card {
    background: #1e1e1e;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    overflow: hidden;
}

/* Section Header & Tech Grid */
.section-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.section-eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

.tech-stack {
    padding: var(--space-5xl) 0;
    background: var(--color-bg-alt);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

@media (min-width: 640px) {
    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 768px) {
    .tech-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.tech-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all 0.4s var(--ease-out-expo);
}

.tech-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-strong);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.1);
}

/* Download Section */
.download {
    padding: var(--space-5xl) 0;
}

.download-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .download-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.download-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all 0.4s var(--ease-out-expo);
    text-align: center;
}

.download-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(var(--color-primary-rgb), 0.15);
}

.download-card.featured {
    border-color: var(--color-primary);
    background: linear-gradient(180deg, rgba(var(--color-primary-rgb), 0.05), transparent);
}

/* CTA & Footer */
.cta {
    padding: var(--space-5xl) 0;
}

.cta-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-4xl) var(--space-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.footer {
    background: var(--color-bg-alt);
    padding: var(--space-4xl) 0 var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

@media (min-width: 768px) {
    .footer-main {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}