/* ============================================
   LuminoCloud — Design System & Styles
   Premium dark theme with luminous accents
   ============================================ */

/* --- CSS Variables --- */
:root {
    --color-bg: #09090b;
    --color-bg-elevated: #111113;
    --color-bg-card: #16161a;
    --color-bg-card-hover: #1c1c21;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(255, 255, 255, 0.12);

    --color-text: #f4f4f5;
    --color-text-secondary: #a1a1aa;
    --color-text-tertiary: #71717a;

    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-dark: #4f46e5;
    --color-primary-glow: rgba(99, 102, 241, 0.25);

    --color-accent: #06b6d4;
    --color-accent-glow: rgba(6, 182, 212, 0.2);

    --gradient-primary: linear-gradient(135deg, #6366f1, #06b6d4);
    --gradient-hero: linear-gradient(135deg, #6366f1 0%, #8b5cf6 30%, #06b6d4 70%, #22d3ee 100%);
    --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(6, 182, 212, 0.04));

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--color-primary-glow);
    --shadow-glow-accent: 0 0 40px var(--color-accent-glow);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

/* --- Ambient Background --- */
.ambient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    animation: float 20s ease-in-out infinite;
}

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

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

.orb-3 {
    width: 400px;
    height: 400px;
    background: #8b5cf6;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -40px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(40px, 30px) scale(1.02); }
}

/* --- Container --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    transition: var(--transition-base);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(9, 9, 11, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
    transition: var(--transition-base);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

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

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
    white-space: nowrap;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px var(--color-primary-glow);
}

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

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    color: var(--color-text);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
}

/* --- Hero --- */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 40px;
    position: relative;
    z-index: 1;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary-light);
    margin-bottom: 32px;
    animation: fadeInUp 0.6s ease-out;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--color-primary-light);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.hero-title {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

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

.hero-subtitle {
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-suffix {
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--color-text-tertiary);
    margin-top: 4px;
}

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

/* --- Hero Visual --- */
.hero-visual {
    width: 100%;
    max-width: 1000px;
    margin: 60px auto 0;
    position: relative;
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.editor-glow {
    position: absolute;
    inset: -40px;
    background: radial-gradient(ellipse at center, var(--color-primary-glow), transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.editor-screenshot {
    position: relative;
    z-index: 1;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* --- Trust Bar --- */
.trust-bar {
    padding: 60px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    z-index: 1;
}

.trust-label {
    text-align: center;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 24px;
}

.trust-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.trust-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-tertiary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-base);
}

.trust-logo:hover {
    color: var(--color-text-secondary);
}

/* --- Section Shared --- */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-full);
}

.section-title {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* --- Features --- */
.features {
    padding: 120px 0;
    position: relative;
    z-index: 1;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-base);
}

.feature-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-card-large {
    grid-column: span 3;
    background: var(--gradient-card);
    border-color: rgba(99, 102, 241, 0.15);
}

.feature-card-large:hover {
    border-color: rgba(99, 102, 241, 0.3);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    color: var(--color-primary-light);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* --- Feature Demo (AI Flow Builder card) --- */
.feature-demo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-top: 28px;
    padding: 24px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.prompt-box {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: var(--radius-md);
    width: 100%;
    max-width: 600px;
}

.prompt-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.prompt-text {
    font-size: 14px;
    color: var(--color-text-secondary);
    font-style: italic;
    line-height: 1.5;
}

.prompt-arrow {
    animation: bounceDown 1.5s ease-in-out infinite;
}

@keyframes bounceDown {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(6px); }
}

.prompt-result {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    justify-content: center;
}

.prompt-result span {
    font-family: var(--font-mono);
    font-size: 13px;
    color: #4ade80;
    font-weight: 500;
}

/* --- How It Works --- */
.how-it-works {
    padding: 120px 0;
    position: relative;
    z-index: 1;
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
    padding: 0 24px;
}

.step-number {
    font-size: 48px;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    line-height: 1;
}

.step-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-content p {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.step-connector {
    width: 80px;
    height: 2px;
    background: var(--gradient-primary);
    margin-top: 28px;
    flex-shrink: 0;
    opacity: 0.4;
}

/* --- AI Nodes --- */
.ai-nodes {
    padding: 120px 0;
    position: relative;
    z-index: 1;
}

.nodes-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.node-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition-base);
    text-align: center;
}

.node-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.node-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.node-card h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}

.node-card p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* --- Pricing --- */
.pricing {
    padding: 120px 0;
    position: relative;
    z-index: 1;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    align-items: start;
}

.pricing-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 36px;
    position: relative;
    transition: var(--transition-base);
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.pricing-card-popular {
    background: var(--gradient-card);
    border-color: rgba(99, 102, 241, 0.3);
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.pricing-card-popular:hover {
    transform: scale(1.05) translateY(-4px);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 700;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-header {
    margin-bottom: 28px;
}

.pricing-header h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.pricing-amount {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 8px;
}

.price {
    font-size: 48px;
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1;
}

.period {
    font-size: 16px;
    color: var(--color-text-tertiary);
}

.pricing-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 28px;
}

.pricing-features li {
    padding: 10px 0;
    font-size: 14px;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features li::before {
    content: '✓';
    color: #4ade80;
    font-weight: 700;
    font-size: 14px;
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* --- Waitlist / CTA --- */
.waitlist {
    padding: 120px 0;
    position: relative;
    z-index: 1;
}

.waitlist-card {
    position: relative;
    background: var(--color-bg-card);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-xl);
    padding: 80px 40px;
    text-align: center;
    overflow: hidden;
}

.waitlist-glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse, var(--color-primary-glow), transparent 70%);
    pointer-events: none;
}

.waitlist-card h2 {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    position: relative;
}

.waitlist-card > p {
    font-size: 17px;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    position: relative;
}

.waitlist-form {
    position: relative;
    max-width: 500px;
    margin: 0 auto;
}

.form-row {
    display: flex;
    gap: 12px;
}

.form-row input {
    flex: 1;
    padding: 14px 20px;
    font-family: var(--font-sans);
    font-size: 15px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border-hover);
    border-radius: var(--radius-full);
    color: var(--color-text);
    outline: none;
    transition: var(--transition-base);
}

.form-row input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.form-row input::placeholder {
    color: var(--color-text-tertiary);
}

.form-note {
    font-size: 13px;
    color: var(--color-text-tertiary);
    margin-top: 16px;
}

.waitlist-success {
    position: relative;
}

.success-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.waitlist-success h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.waitlist-success p {
    color: var(--color-text-secondary);
}

/* --- Footer --- */
.footer {
    padding: 80px 0 40px;
    border-top: 1px solid var(--color-border);
    position: relative;
    z-index: 1;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-top: 12px;
    max-width: 280px;
    line-height: 1.6;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text);
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--color-text-tertiary);
    padding: 6px 0;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-text-tertiary);
}

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-card-large {
        grid-column: span 2;
    }

    .nodes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(9, 9, 11, 0.95);
        backdrop-filter: blur(20px);
        padding: 24px;
        border-bottom: 1px solid var(--color-border);
        gap: 16px;
    }

    .hero {
        padding: 100px 20px 40px;
        min-height: auto;
    }

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

    .hero-stats {
        gap: 20px;
    }

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

    .feature-card-large {
        grid-column: span 1;
    }

    .steps {
        flex-direction: column;
        gap: 32px;
    }

    .step-connector {
        width: 2px;
        height: 40px;
        margin: 0 auto;
    }

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

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .pricing-card-popular {
        transform: none;
    }

    .pricing-card-popular:hover {
        transform: translateY(-4px);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .footer-brand {
        grid-column: span 2;
    }

    .form-row {
        flex-direction: column;
    }

    .prompt-result {
        flex-direction: column;
        gap: 8px;
    }

    .waitlist-card {
        padding: 48px 24px;
    }
}