:root {
    /* Apple Light Theme Palette */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --accent: #8d649c;
    --accent-glow: rgba(141, 100, 156, 0.3);
    --glass: rgba(255, 255, 255, 0.8);
    --border: rgba(0, 0, 0, 0.1);

    /* Typography Scale */
    --h1-size: 5rem;
    --h2-size: 3.5rem;
    --h3-size: 1.75rem;
    --body-size: 1.125rem;
    --body-line-height: 1.6;

    /* Spacing */
    --section-spacing: 12rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: var(--body-line-height);
}

/* Global Typography */
h1,
h2,
h3 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

p {
    font-size: var(--body-size);
    color: var(--text-secondary);
}

/* Canvas Removed */

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.nav-blur {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: -1;
    border-bottom: 1px solid var(--border);
}

.nav-content {
    max-width: 1200px;
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 100;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    z-index: 101;
    /* Ensure above mobile menu */
    position: relative;
}

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

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    margin-left: 2rem;
    transition: color 0.3s ease;
    opacity: 0.8;
}

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    /* Hidden on desktop */
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 101;
    /* Above menu overlay */
    padding: 0;
}

.mobile-menu-btn span {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: all 0.3s ease;
    display: block;
}

/* Hamburger Animation State */
.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    transform: translateY(-8px) rotate(-45deg);
    /* Corrected logic for 2-bar or 3-bar. Assuming 3 lines usually, but here 2 spans in HTML. Let's start with 2 lines cross. */
}

/* Wait, HTML has 2 spans. Let's assume standard 2-line cross or add a middle one. 
   Actually standard hamburger has 3. Let's assume user wants standard. 
   If HTML has 2 spans, we can do top/bottom cross. 
   Let's check HTML... yes 2 spans.
   Let's make top rotate 45, bottom rotate -45 and move to center.
*/
.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    transform: translateY(-8px) rotate(-45deg);
}


/* Mobile Menu Overlay */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 100;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    text-align: center;
}

.mobile-link {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s ease;
}

.mobile-menu.active .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delay for links */
.mobile-menu.active .mobile-link:nth-child(1) {
    transition-delay: 0.1s;
}

.mobile-menu.active .mobile-link:nth-child(2) {
    transition-delay: 0.2s;
}

.mobile-menu.active .mobile-link:nth-child(3) {
    transition-delay: 0.3s;
}

.mobile-menu.active .mobile-link:nth-child(4) {
    transition-delay: 0.4s;
}


/* Buttons */
.btn-primary {
    background: var(--text-primary);
    color: #fff;
    border: none;
    border-radius: 980px;
    padding: 0.8rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: capitalize;
}

.brand_color {
    color: var(--accent);
}

.brand_bg {
    background-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent);
    transform: scale(1.02);
}

.btn-secondary {
    padding: 0.8rem 2rem;
    background: rgba(0, 0, 0, 0.05);
    color: var(--accent);
    border: none;
    border-radius: 980px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(0, 0, 0, 0.1);
}

.btn-large {
    padding: 1rem 3rem;
    font-size: 1.1rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 980px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
}

/* Hero */
.hero-section {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding-top: 60px;
    position: relative;
    overflow: hidden;
}

.hero-context-cue {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.hero-title {
    font-size: var(--h1-size);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
    background: linear-gradient(180deg, #1d1d1f 0%, #434344 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.75rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 1rem;
    font-weight: 400;
}

.hero-grounding {
    font-size: 1.125rem;
    color: var(--text-secondary);
    opacity: 0.8;
    margin-bottom: 3rem;
    font-weight: 400;
}

.hero-buttons,
.cta-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 4rem;
    justify-content: center;
}

/* Why Section */
.why-section {
    padding: var(--section-spacing) 2rem;
    background: var(--bg-secondary);
    text-align: center;
}

.why-container {
    max-width: 800px;
    margin: 0 auto;
}

.section-title-small {
    font-size: var(--h2-size);
    color: var(--text-primary);
    margin-bottom: 3rem;
}

.why-content p {
    font-size: 1.5rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.why-content .emphasis {
    color: var(--text-primary);
    font-weight: 500;
}

/* Features */
.feature-section {
    padding: var(--section-spacing) 2rem;
    background: var(--bg-primary);
}

.feature-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: flex-start;
}

.section-title {
    font-size: var(--h2-size);
    font-weight: 600;
    margin-bottom: 2rem;
    line-height: 1.1;
}

.section-desc {
    font-size: 1.5rem;
    color: var(--text-secondary);
    max-width: 450px;
    line-height: 1.5;
    margin-bottom: 4rem;
    white-space: pre-line;
    /* Handle user's text spacing */
}

/* Safety Logic - Pillar Style */
.safety-logic-container {
    padding-left: 2rem;
    border-left: 2px solid var(--accent);
}

.section-title-medium {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.safety-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Safety List (Corrected) */
.safety-desc-list p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0.75rem;
    position: relative;
    padding-left: 1.25rem;
}

.safety-desc-list p::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.feature-visual img,
.feature-visual video {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.1);
}

.wireframe-container .wireframe-img {
    /* Specific style for this image */
    opacity: 0.9;
}


/* Bento Grid */
.bento-grid-section {
    padding: var(--section-spacing) 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.grid-title {
    font-size: var(--h2-size);
    margin-bottom: 2rem;
    text-align: center;
}

.grid-context {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 5rem;
    font-size: 1.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    height: auto;
}

.bento-item {
    background: #ffffff;
    padding: 3rem;
    border-radius: 24px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.04);
}

.bento-item h3 {
    font-size: var(--h3-size);
    margin-bottom: 0.5rem;
}

.icon-container {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.icon-container svg {
    filter: drop-shadow(0 0 15px rgba(0, 0, 0, 0.1));
    /* Dark shadow for icons */
    transition: filter 0.3s ease, transform 0.3s ease;
}

.bento-item:hover .icon-container svg {
    filter: drop-shadow(0 0 25px rgba(0, 0, 0, 0.2));
    transform: scale(1.05);
}

/* Integration Sequence */
.scroll-sequence-section {
    min-height: 100vh;
    padding: var(--section-spacing) 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at center, #fbfbfd 0%, #ffffff 80%);
}

.sequence-text {
    text-align: center;
    max-width: 700px;
}

.sequence-text h2 {
    font-size: var(--h2-size);
    margin-bottom: 4rem;
    background: linear-gradient(90deg, #1d1d1f, #86868b);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.integration-points {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    text-align: left;
    margin: 0 auto;
    max-width: 500px;
}

.integration-points p {
    font-size: 1.5rem;
    color: var(--text-primary);
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.integration-points p:last-child {
    border-bottom: none;
}


/* Reality Section */
.reality-section {
    padding: var(--section-spacing) 2rem;
    background: var(--bg-secondary);
}

.reality-container.reality-grid {
    max-width: 1200px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
    /* Removed redundant grid-template-columns from previous duplicate entry */
}

.reality-visual img {
    /* Ensure image fits */
    width: 100%;
    border-radius: 12px;
}

.reality-content-wrapper {
    /* Style wrapper */
}

/* CTA */
.cta-section {
    padding: var(--section-spacing) 0;
    text-align: center;
    background: var(--bg-primary);
}

.cta-content h2 {
    font-size: 4rem;
    margin-bottom: 2rem;
}

.cta-sub {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

/* Contact Refined */
.contact-section {
    padding: var(--section-spacing) 2rem 6rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 70vh;
    /* Occupy significant screen space */
}

.contact-header {
    margin-bottom: 4rem;
}

.contact-title {
    font-size: 5rem;
    /* Massive impact */
    font-weight: 700;
    letter-spacing: -0.03em;
    background: linear-gradient(180deg, #1d1d1f 0%, #434344 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
    line-height: 1;
}

.contact-sub {
    font-size: 1.5rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.contact-email {
    font-size: 6vw;
    /* Responsive large */
    font-weight: 600;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: -0.04em;
    transition: all 0.3s ease;
    display: inline-block;
    margin-bottom: 3rem;
    line-height: 1.1;
    position: relative;
}

.contact-email:hover {
    transform: scale(1.02);
    /* opacity: 0.8; */
    text-shadow: 0 10px 30px rgba(0, 113, 227, 0.2);
}

.contact-meta {
    display: flex;
    gap: 2rem;
    font-size: 1.25rem;
    color: var(--text-primary);
    opacity: 0.6;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-phone {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

.contact-phone:hover {
    color: var(--accent);
    opacity: 1;
}

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

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 2rem;
    color: var(--text-secondary);
    font-size: 0.8rem;
}

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

@media (max-width: 768px) {
    :root {
        --h1-size: 3.5rem;
        --h2-size: 2.5rem;
        --section-spacing: 6rem;
    }

    .feature-container,
    .reality-container.reality-grid,
    .bento-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .contact-title {
        font-size: 3rem;
    }

    .contact-email {
        font-size: 2.5rem;
        /* Fallback for mobile if vw is too small or big */
    }

    /* Mobile Nav */
    .desktop-only {
        display: none !important;
    }

    .mobile-menu-btn {
        display: flex;
        /* Show Hamburger */
        width: 30px;
        height: 20px;
    }
}