/* 
   Byron Brand Stylesheet
   Theme: Minimal, Premium, Intentional, Warm, Calm
   Colors: Deep blacks, stark whites, cool grays
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
    /* Color Palette */
    --bg-primary: #08080a;
    --bg-secondary: #0f0f12;
    --bg-tertiary: #16161a;
    --accent: #ffffff;
    --accent-rgb: 255, 255, 255;
    
    --text-primary: #f5f5f7;
    --text-secondary: #9ea0a5;
    --text-tertiary: #62646c;
    
    --border-color: rgba(255, 255, 255, 0.07);
    --border-hover: rgba(255, 255, 255, 0.15);
    --glass-bg: rgba(15, 15, 18, 0.6);
    --glass-border: rgba(255, 255, 255, 0.05);
    
    /* Typography */
    --font-title: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Layout */
    --max-width: 1100px;
    --border-radius: 12px;
    --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
}

body {
    overflow-x: hidden;
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Background Ambient Glows */
.ambient-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.025) 0%, rgba(0, 0, 0, 0) 70%);
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    pointer-events: none;
    z-index: 0;
}

.ambient-glow-2 {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.015) 0%, rgba(0, 0, 0, 0) 75%);
    bottom: 20%;
    right: -100px;
    pointer-events: none;
    z-index: 0;
}

/* Utility Layouts */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

.section {
    padding: 8rem 0;
}

/* Navigation Header */
.header-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background: rgba(8, 8, 10, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-family: var(--font-title);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    display: inline-block;
    width: 16px;
    height: 16px;
    background: var(--accent);
    border-radius: 3px;
    position: relative;
}

.logo-icon::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--bg-primary);
    top: 4px;
    left: 4px;
    border-radius: 1.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-secondary);
}

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

.nav-cta {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.nav-cta:hover {
    border-color: var(--border-hover);
    background: var(--accent);
    color: var(--bg-primary);
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding-top: 100px;
}

.tagline-badge {
    display: inline-block;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.35rem 0.9rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    animation: fadeIn 1s ease-out;
}

.hero-title {
    font-family: var(--font-title);
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.04em;
    max-width: 800px;
    margin: 0 auto 1.5rem auto;
    color: #ffffff;
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem auto;
    animation: slideUp 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    animation: slideUp 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 2rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.05);
}

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

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

/* Bento Grid Philosophy Section */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 4rem;
}

.bento-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.bento-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

.bento-card.col-span-2 {
    grid-column: span 2;
}

.bento-icon {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--accent);
}

.bento-title {
    font-family: var(--font-title);
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.bento-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 300;
}

.philosophy-split {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
}

.philosophy-side {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2.5rem;
}

.philosophy-side.bloated {
    border-left: 3px solid #ff4444;
}

.philosophy-side.byron-calm {
    border-left: 3px solid #f5f5f7;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(255, 255, 255, 0.02) 100%);
}

.philosophy-side h4 {
    font-family: var(--font-title);
    font-size: 1.15rem;
    margin-bottom: 1.5rem;
}

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

.philosophy-list li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    position: relative;
    padding-left: 1.5rem;
}

.philosophy-list li::before {
    position: absolute;
    left: 0;
    font-weight: 600;
}

.bloated .philosophy-list li::before {
    content: '✕';
    color: #ff4444;
}

.byron-calm .philosophy-list li::before {
    content: '✓';
    color: #eaeaea;
}

/* Showcase & Interactive Tab Gallery */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem auto;
}

.section-title {
    font-family: var(--font-title);
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    font-weight: 300;
}

.tab-nav {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.35rem;
    border-radius: 30px;
    max-width: 500px;
    margin: 0 auto 3rem auto;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0.65rem 1.5rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.tab-btn:hover {
    color: var(--accent);
}

.tab-btn.active {
    background: var(--bg-tertiary);
    color: var(--accent);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.showcase-content {
    display: none;
    grid-template-columns: 1.2fr 1fr;
    gap: 3.5rem;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3.5rem;
    animation: fadeIn 0.4s ease-out;
}

.showcase-content.active {
    display: grid;
}

.showcase-graphic {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    aspect-ratio: 4/3;
    width: 100%;
    position: relative;
    overflow: hidden;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

/* Visual mockup styled like Notion */
.notion-mock {
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.notion-topbar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.notion-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
}

.notion-title-row {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.notion-db {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.notion-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 4px;
    padding: 10px;
    font-size: 0.75rem;
    font-family: monospace;
    color: var(--text-secondary);
}

.notion-row.header {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-weight: 500;
}

.notion-bar-chart {
    height: 35px;
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 8px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 4px;
}

.notion-bar {
    flex-grow: 1;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 2px 2px 0 0;
    transition: var(--transition-smooth);
}

.notion-bar.active {
    background: var(--accent);
}

.showcase-info h3 {
    font-family: var(--font-title);
    font-size: 1.85rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
}

.showcase-tag {
    display: inline-block;
    color: var(--text-tertiary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}

.showcase-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 300;
    margin-bottom: 2rem;
}

.showcase-features {
    list-style: none;
    margin-bottom: 2.5rem;
}

.showcase-features li {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.showcase-features li::before {
    content: '→';
    color: var(--text-tertiary);
}

.showcase-price-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.showcase-price {
    font-family: var(--font-title);
    font-size: 1.75rem;
    font-weight: 700;
}

.showcase-price.muted {
    text-decoration: line-through;
    color: var(--text-tertiary);
    font-size: 1.25rem;
}

/* FAQ Section */
.faq-accordion {
    max-width: 680px;
    margin: 4rem auto 0 auto;
}

.faq-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-item:hover {
    border-color: var(--border-hover);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    cursor: pointer;
    font-family: var(--font-title);
    font-weight: 500;
    font-size: 1rem;
    user-select: none;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 1.5rem;
    color: var(--text-secondary);
    font-size: 0.92rem;
    font-weight: 300;
    transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), padding 0.35s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding-bottom: 1.5rem;
}

.faq-toggle-icon {
    font-size: 1.25rem;
    color: var(--text-tertiary);
    transition: transform 0.35s ease;
}

.faq-item.active .faq-toggle-icon {
    transform: rotate(45deg);
    color: var(--accent);
}

/* Newsletter / Lead Magnet Section */
.newsletter-card {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(255, 255, 255, 0.01) 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 5rem 3rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.newsletter-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.015) 0%, transparent 60%);
    pointer-events: none;
}

.newsletter-title {
    font-family: var(--font-title);
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.newsletter-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 500px;
    margin: 0 auto 2.5rem auto;
    font-weight: 300;
}

.newsletter-form {
    display: flex;
    gap: 0.75rem;
    max-width: 480px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.form-group {
    flex-grow: 1;
}

.form-input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.85rem 1.25rem;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.form-input:focus {
    outline: none;
    border-color: var(--border-hover);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.02);
}

.newsletter-note {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 1rem;
}

.form-success-msg {
    display: none;
    color: #22c55e;
    font-size: 0.95rem;
    margin-top: 1rem;
    font-weight: 500;
}

/* Footer Section */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 4rem 0;
    background: var(--bg-primary);
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

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

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-brand-title {
    color: var(--text-primary);
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

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

.footer-socials a {
    color: var(--text-tertiary);
    font-size: 0.95rem;
}

.footer-socials a:hover {
    color: var(--accent);
}

.footer-copyright {
    margin-top: 2rem;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.02);
    padding-top: 2rem;
    color: var(--text-tertiary);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Rules */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.75rem;
    }
    .hero-subtitle {
        font-size: 1.05rem;
    }
    .bento-grid {
        grid-template-columns: 1fr;
    }
    .bento-card.col-span-2 {
        grid-column: span 1;
    }
    .showcase-content {
        grid-template-columns: 1fr;
        padding: 2rem;
    }
    .philosophy-split {
        flex-direction: column;
        gap: 1.5rem;
    }
    .nav-links {
        display: none; /* simple mobile simplification */
    }
    .newsletter-form {
        flex-direction: column;
    }
    .footer-container {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}