/* CSS Reset & Variables */
:root {
    /* Brand Palette */
    --bg-color: #FAF9F7;
    /* Warm Off-White */
    --bg-subtle: #F5F4F2;
    /* Slightly darker for contrast if needed, or use rgba */
    --bg-tint: rgba(46, 52, 71, 0.04);
    /* Digital Silence Tint */

    --text-primary: #1C1C1C;
    /* Soft Charcoal */
    --text-secondary: #2E3447;
    /* Deep Desaturated Indigo - Used for Taglines/Accents */
    --text-tertiary: #8A94A6;
    /* Muted Silver Blue - Meta/Dividers */

    --accent-primary: #2E3447;
    /* Deep Indigo */
    --accent-hover: #242938;
    /* Darker Indigo */
    --accent-highlight: #E6D8A3;
    /* Soft Moon Yellow - Status/Highlights */

    --border-color: #E0DFDD;
    /* Adjusted for warm bg */

    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing System */
    --space-xs: 0.5rem;
    /* 8px */
    --space-sm: 1rem;
    /* 16px */
    --space-md: 2rem;
    /* 32px */
    --space-lg: 4rem;
    /* 64px */
    --space-xl: 8rem;
    /* 128px */

    --container-max: 1000px;
    --border-width: 1px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
    transition: all 0.2s ease;
}

ul {
    list-style: none;
}

/* Utilities */
.container {
    width: 90%;
    max-width: var(--container-max);
    margin: 0 auto;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-sm);
    display: block;
}

.section-heading {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

/* Navigation - Minimal & Fixed */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.brand {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-logo {
    width: 36px;
    height: auto;
    opacity: 1;
    /* Remove opacity to help visibility */
}

.nav-links {
    display: flex;
    gap: var(--space-md);
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

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

.nav-cta {
    position: relative;
}

.nav-cta::after {
    content: '';
    display: block;
    width: 100%;
    height: 1px;
    background: var(--text-primary);
    transform: scaleX(0);
    transition: transform 0.2s ease;
}

.nav-cta:hover::after {
    transform: scaleX(1);
}

/* Hero Section - Engineered & Centered */
.hero-section {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
    /* Nav offset */
    padding-bottom: var(--space-xl);
}

.logo {
    position: relative;
    display: inline-block;
    text-align: center;
    margin-bottom: var(--space-md);
    margin-top: var(--space-lg);
    /* Add space specific for the floating logo */
}

.logo-text {
    font-family: var(--font-heading);
    /* Restore Playfair Display */
    font-size: 3.5rem;
    font-weight: 600;
    color: #1C1C1C;
    line-height: 1;
}

.logo-mark {
    position: absolute;
    top: -80px;
    /* Adjust for 80px height */
    left: 0;
    width: 100%;
    /* Center relative to text */
    display: flex;
    justify-content: center;
}

.logo-mark img {
    width: 80px;
    /* Bigger as requested */
    height: auto;
    display: block;
    opacity: 1;
}

.hero-tagline {
    font-family: var(--font-heading);
    font-style: italic;
    font-size: 1.5rem;
    color: var(--text-secondary);
    /* Pattern: #2E3447 */
    margin-bottom: var(--space-md);
}

.hero-philosophy {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto var(--space-md);
    color: var(--text-primary);
}

.hero-meta {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-lg);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.meta-separator {
    margin: 0 var(--space-xs);
    color: var(--text-tertiary);
}

.hero-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--accent-primary);
    /* #2E3447 */
    color: #FAF9F7;
    border-color: var(--accent-primary);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    /* #242938 */
    border-color: var(--accent-hover);
    color: #FAF9F7;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border-color: var(--accent-primary);
    /* Indigo border */
}

.btn-secondary:hover {
    background-color: rgba(46, 52, 71, 0.05);
}

/* Product Section - Case Study Grid */
.product-section {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-tint);
    /* Subtle tint */
}

.product-header {
    text-align: left;
    margin-bottom: var(--space-lg);
    max-width: 800px;
}

.product-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    margin-bottom: var(--space-sm);
    color: var(--accent-primary);
    /* Indigo Heading */
}

.product-subtitle {
    font-size: 1.25rem;
    color: var(--text-tertiary);
    line-height: 1.5;
}

.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: start;
}

.product-visual {
    background-color: rgba(255, 255, 255, 0.5);
    border: 1px solid var(--border-color);
    padding: var(--space-lg);
    display: flex;
    justify-content: center;
    align-items: center;
    aspect-ratio: 1 / 1;
}

.product-logo-lg {
    max-width: 180px;
    /* Fixed width for icon consistency */
    width: 100%;
    height: auto;
    opacity: 1;
    border-radius: 32px;
    /* App Icon Squircle */
    box-shadow: 0 20px 40px -10px rgba(46, 52, 71, 0.2);
    /* Soft Indigo Shadow */
    display: block;
}

.product-details-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border-top: 1px solid var(--border-color);
}

.detail-block {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.detail-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-transform: uppercase;
    color: var(--text-tertiary);
    /* Muted Blue Labels */
    margin-bottom: var(--space-xs);
}

.status-list {
    margin-top: var(--space-sm);
}

.status-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.dot {
    width: 6px;
    height: 6px;
    background-color: var(--accent-highlight);
    /* Moon Yellow */
    border-radius: 50%;
    display: inline-block;
}

.dot.yellow {
    background-color: var(--accent-highlight);
    opacity: 0.5;
    /* Differentiate coming soon maybe? Or keep solid. User said "Status dot in Moon Yellow" */
}

.link-arrow {
    display: inline-block;
    margin-top: var(--space-sm);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--accent-primary);
    border-bottom: 1px solid var(--accent-primary);
}

/* Capabilities Section */
.capabilities-section {
    padding: var(--space-xl) 0;
    background-color: var(--bg-color);
    /* Kept clean/warm */
    border-top: 1px solid var(--border-color);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-lg);
}

.cap-philosophy {
    font-family: var(--font-heading);
    font-style: italic;
    font-size: 1.5rem;
    color: var(--text-tertiary);
    margin-top: var(--space-sm);
}

.cap-list li {
    font-size: 1.5rem;
    padding: var(--space-sm) var(--space-sm);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.2s ease;
    border-left: 1px solid var(--accent-primary);
    /* Thin Indigo left border */
    padding-left: var(--space-md);
}

.cap-list li:last-child {
    border-bottom: none;
}

.tech-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-primary);
    background: rgba(138, 148, 166, 0.2);
    /* Transparent muted blue */
    padding: 2px 8px;
    border-radius: 2px;
    border: none;
}

/* About Section */
.about-section {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border-color);
}

.about-content {
    max-width: 800px;
}

.about-content p {
    font-size: 1.25rem;
    color: var(--text-primary);
}

/* Footer */
.site-footer {
    padding: var(--space-xl) 0 var(--space-lg);
    border-top: 1px solid var(--accent-primary);
    background: #18191B;
    /* Deep Charcoal (Darker than #1C1C1C) */
    color: var(--bg-color);
}

.footer-email {
    font-family: var(--font-heading);
    font-size: 3rem;
    color: var(--bg-color);
    text-decoration: none;
    line-height: 1.2;
    transition: color 0.2s ease;
}

.footer-email:hover {
    color: var(--accent-highlight);
    /* Moon Yellow on hover */
    opacity: 1;
}

.footer-bottom {
    margin-top: var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.f-name {
    font-family: var(--font-heading);
    font-size: 1.5rem;
}

.f-tag {
    font-family: var(--font-heading);
    font-style: italic;
    opacity: 0.7;
}

.footer-meta {
    display: flex;
    gap: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }

    .product-showcase,
    .capabilities-grid {
        grid-template-columns: 1fr;
    }

    .footer-email {
        font-size: 2rem;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .nav-links {
        display: none;
        /* Simplify nav on mobile for now (would add toggle in real app) */
    }
}