/* ============================================
   ARYGAI Website — Main Stylesheet
   ============================================ */

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

:root {
    /* Colours */
    --color-bg-light: #F5F3EF;
    --color-bg-warm: #F0EDE8;
    --color-bg-dark: #0A0A0A;
    --color-bg-dark-alt: #111111;
    --color-text-primary: #1A1A1A;
    --color-text-secondary: #5A5A5A;
    --color-text-light: #F5F3EF;
    --color-text-muted: #9A9A9A;
    --color-accent-gold: #C4A96A;
    --color-accent-champagne: #D4C5A0;
    --color-accent-beige: #E8DCC8;
    --color-border-light: rgba(26, 26, 26, 0.08);
    --color-border-dark: rgba(245, 243, 239, 0.1);
    --color-sphere-core: #C4A96A;
    --color-sphere-glow: rgba(196, 169, 106, 0.3);
    --color-sphere-ring: rgba(196, 169, 106, 0.15);

    /* Typography */
    --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 8rem;
    --space-4xl: 12rem;

    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-light);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease, opacity 0.3s ease;
}

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

ul {
    list-style: none;
}

/* --------------------------------------------
   HEADER
   -------------------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(245, 243, 239, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-light);
    height: var(--header-height);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--color-text-primary);
    text-transform: uppercase;
}

.logo-img {
    height: 80px;
    width: auto;
    display: block;
}

.logo:hover {
    opacity: 0.7;
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    gap: var(--space-lg);
}

.nav-list a {
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    color: var(--color-text-primary);
    transition: color 0.3s ease;
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-text-primary);
    transition: width 0.3s ease;
}

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

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

.btn-request-access {
    display: inline-flex;
    align-items: center;
    padding: 0.625rem 1.5rem;
    background-color: var(--color-text-primary);
    color: var(--color-text-light);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    border: 1px solid var(--color-text-primary);
    border-radius: 6px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.btn-request-access:hover {
    background-color: transparent;
    color: var(--color-text-primary);
}

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

.mobile-menu-toggle span {
    display: block;
    width: 22px;
    height: 1px;
    background-color: var(--color-text-primary);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* --------------------------------------------
   HERO SECTION
   -------------------------------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: var(--header-height);
    background-color: var(--color-bg-light);
    position: relative;
    overflow: hidden;
}

.hero-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    width: 100%;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-label {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent-gold);
    margin-bottom: var(--space-lg);
}

.hero-headline {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 4vw, 3.75rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    letter-spacing: -0.01em;
}

.hero-description {
    font-size: 1.0625rem;
    font-weight: 300;
    line-height: 1.75;
    color: var(--color-text-secondary);
    max-width: 520px;
    margin-bottom: var(--space-xl);
}

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

.cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    background-color: var(--color-text-primary);
    color: var(--color-text-light);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    border: 1px solid var(--color-text-primary);
    border-radius: 6px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.cta-primary:hover {
    background-color: transparent;
    color: var(--color-text-primary);
}

.cta-primary .arrow {
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.cta-primary:hover .arrow {
    transform: translateX(4px);
}

.cta-secondary {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    color: var(--color-text-secondary);
    position: relative;
    padding-bottom: 2px;
    border-bottom: 1px solid var(--color-text-muted);
    transition: color 0.3s ease, border-color 0.3s ease;
}

.cta-secondary:hover {
    color: var(--color-text-primary);
    border-color: var(--color-text-primary);
}

/* Hero Visual — The ARYGAI Sphere */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.sphere-container {
    width: 100%;
    max-width: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sphere-img {
    width: 100%;
    height: auto;
    display: block;
}

/* Hero powered by */
.hero-powered-by {
    text-align: center;
    font-size: 0.6875rem;
    font-weight: 400;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    padding-bottom: var(--space-xl);
}


/* --------------------------------------------
   DARK POSITIONING SECTION
   -------------------------------------------- */
.positioning-section {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    padding: 5rem 0 4rem;
}

.positioning-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.positioning-headline {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-lg);
    letter-spacing: -0.01em;
}

.positioning-description {
    font-size: 1rem;
    font-weight: 300;
    line-height: 1.8;
    text-align: center;
    color: var(--color-text-muted);
    max-width: 680px;
    margin: 0 auto var(--space-xl);
}

/* Pillars */
.pillars {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
    border-top: 1px solid var(--color-border-dark);
}

.pillar {
    padding: var(--space-xl) var(--space-md);
    border-right: 1px solid var(--color-border-dark);
    text-align: center;
    transition: background-color 0.3s ease;
}

.pillar:last-child {
    border-right: none;
}

.pillar:hover {
    background-color: rgba(196, 169, 106, 0.03);
}

.pillar-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-md);
    color: var(--color-accent-gold);
    opacity: 0.7;
}

.pillar-icon svg {
    width: 100%;
    height: 100%;
}

.pillar-title {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
    color: var(--color-text-light);
}

.pillar-text {
    font-size: 0.8125rem;
    font-weight: 300;
    line-height: 1.7;
    color: var(--color-text-muted);
}


/* --------------------------------------------
   CAPABILITIES SECTION
   -------------------------------------------- */
.capabilities-section {
    background-color: var(--color-bg-light);
    padding: var(--space-2xl) 0 var(--space-xl);
}

.capabilities-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section-label {
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-accent-gold);
    text-align: center;
    margin-bottom: var(--space-md);
}

.section-heading {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    text-align: center;
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    letter-spacing: -0.01em;
}

.text-gold {
    color: var(--color-accent-gold);
}

.text-gradient {
    background: linear-gradient(90deg, var(--color-text-primary) 0%, var(--color-text-primary) 40%, var(--color-accent-gold) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Capabilities Grid */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.capability-card {
    padding: var(--space-md) var(--space-sm);
    border: none;
    background-color: transparent;
    text-align: center;
}

.card-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--space-sm);
    color: var(--color-accent-gold);
}

.card-icon svg {
    width: 100%;
    height: 100%;
}

.card-title {
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-xs);
    color: var(--color-text-primary);
    word-break: break-word;
    hyphens: auto;
}

.card-text {
    font-size: 0.8125rem;
    font-weight: 300;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* Capabilities CTA */
.capabilities-cta {
    text-align: center;
}


/* --------------------------------------------
   BOTTOM STATEMENT SECTION
   -------------------------------------------- */
.bottom-statement {
    background-color: var(--color-bg-dark);
    padding: var(--space-lg) 0;
}

.bottom-statement-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    text-align: center;
}

.statement-text {
    font-family: var(--font-serif);
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    font-weight: 400;
    line-height: 1.4;
    color: var(--color-text-light);
    max-width: 1100px;
    margin: 0 auto;
    letter-spacing: -0.01em;
    white-space: nowrap;
}


/* --------------------------------------------
   FOOTER
   -------------------------------------------- */
.site-footer {
    background-color: var(--color-bg-dark);
    border-top: 1px solid var(--color-border-dark);
    padding: var(--space-xl) 0;
}

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

.footer-logo {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.footer-copy {
    font-size: 0.75rem;
    font-weight: 300;
    color: var(--color-text-muted);
}

.footer-tagline {
    font-size: 0.75rem;
    font-weight: 300;
    color: var(--color-text-muted);
    font-style: italic;
}


/* --------------------------------------------
   RESPONSIVE — TABLET
   -------------------------------------------- */
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-2xl);
    }

    .hero-content {
        order: 1;
    }

    .hero-visual {
        order: 0;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-ctas {
        justify-content: center;
    }

    .sphere-container {
        max-width: 360px;
    }

    .pillars {
        grid-template-columns: repeat(3, 1fr);
    }

    .pillar:nth-child(3) {
        border-right: none;
    }

    .pillar:nth-child(4),
    .pillar:nth-child(5) {
        border-top: 1px solid var(--color-border-dark);
    }

    .capabilities-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .card-text {
        font-size: 0.75rem;
    }
}


/* --------------------------------------------
   RESPONSIVE — MOBILE
   -------------------------------------------- */
@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }

    .main-nav {
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--color-bg-light);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        z-index: 999;
    }

    .main-nav.is-open {
        display: flex;
    }

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

    .nav-list a {
        font-size: 1.25rem;
    }

    .btn-request-access {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu-toggle.is-active span:nth-child(1) {
        transform: rotate(45deg) translate(4px, 4px);
    }

    .mobile-menu-toggle.is-active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.is-active span:nth-child(3) {
        transform: rotate(-45deg) translate(4px, -4px);
    }

    .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + var(--space-xl));
        padding-bottom: var(--space-xl);
    }

    .hero-inner {
        padding: var(--space-xl) var(--space-md);
    }

    .hero-headline {
        font-size: 2rem;
    }

    .hero-ctas {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .sphere-container {
        max-width: 280px;
    }

    .positioning-section {
        padding: var(--space-3xl) 0;
    }

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

    .pillar {
        border-right: none;
        border-bottom: 1px solid var(--color-border-dark);
    }

    .pillar:last-child {
        border-bottom: none;
    }

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

    .capabilities-section {
        padding: var(--space-3xl) 0;
    }

    .footer-inner {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-headline {
        font-size: 1.75rem;
    }

    .positioning-headline {
        font-size: 1.5rem;
    }

    .section-heading {
        font-size: 1.75rem;
    }

    .statement-text {
        font-size: 1.25rem;
    }
}