/* ============================================================
   Supero GTM — Design System
   Light-first, boardroom-grade, diagnostic-led
   ============================================================ */

/* --- Tokens --- */
:root {
    --bg: #FFFFFF;
    --bg-alt: #F7F6F4;
    --bg-dark: #0D0618;
    --bg-dark-alt: #160B24;
    --text: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --text-on-dark: #F1EFF5;
    --text-on-dark-muted: rgba(241,239,245,0.6);
    --magenta: #A51C60;
    --purple: #7B2D8E;
    --gradient: linear-gradient(135deg, #A51C60 0%, #7B2D8E 100%);
    --border: #E2E8F0;
    --border-dark: rgba(255,255,255,0.08);
    --radius: 12px;
    --radius-lg: 20px;
    --container: 1200px;
    --nav-height: 72px;
    --transition: 0.22s ease;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }

/* --- Typography --- */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text);
}
.on-dark h1, .on-dark h2, .on-dark h3 { color: var(--text-on-dark); }

.display { font-size: clamp(2.5rem, 5vw, 4rem); }
.headline { font-size: clamp(2rem, 4vw, 3rem); }
.subheadline { font-size: clamp(1.4rem, 2.5vw, 2rem); }
.body-lg { font-size: 1.125rem; line-height: 1.75; color: var(--text-secondary); }
.body { font-size: 1rem; line-height: 1.7; color: var(--text-secondary); }
.label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--magenta);
}
.label-dark { color: rgba(165,28,96,0.8); }

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

/* --- Layout --- */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}
section { padding: 5rem 0; }
section.tight { padding: 3rem 0; }
section.hero-section { padding: 0; }

/* --- Navigation --- */
nav {
    position: relative;
    background: #ffffff;
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container);
    margin: 0 auto;
    padding: 14px 1.5rem;
}
.nav-logo img { height: 44px; width: auto; }
.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
}
.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--text); background: var(--bg-alt); }
.nav-links a.active { color: var(--text); }
.nav-links .nav-cta {
    font-size: 0.875rem;
    font-weight: 600;
    color: #ffffff;
    background: var(--magenta);
    padding: 0.5rem 1.25rem;
    border-radius: 8px;
    margin-left: 0.5rem;
    transition: opacity var(--transition), transform var(--transition);
}
.nav-links .nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    align-self: center;
}
.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

/* --- Hero Section --- */
.hero {
    background: var(--bg-dark);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-height) + 4rem) 1.5rem 5rem;
    text-align: center;
}
.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(165,28,96,0.8);
    border: 1px solid rgba(165,28,96,0.25);
    background: rgba(165,28,96,0.06);
    padding: 0.4rem 1rem;
    border-radius: 100px;
    margin-bottom: 2rem;
}
.hero-eyebrow::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--magenta);
}

/* Selector cards grid */
.selectors {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    max-width: 1100px;
    width: 100%;
    margin: 0 auto 3rem;
}
.selector-card {
    position: relative;
    padding: 2rem 1.75rem 2.5rem;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-lg);
    text-align: left;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), transform var(--transition);
    text-decoration: none;
    display: block;
}
.selector-card:hover {
    background: rgba(165,28,96,0.07);
    border-color: rgba(165,28,96,0.4);
    transform: translateY(-2px);
}
.selector-card.featured { border-color: rgba(165,28,96,0.3); }
.selector-num {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(165,28,96,0.7);
    margin-bottom: 1.25rem;
}
.selector-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}
.selector-sub {
    font-size: 0.875rem;
    color: rgba(241,239,245,0.55);
    line-height: 1.5;
    margin-bottom: 1.75rem;
}
.selector-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--magenta);
    transition: gap var(--transition);
}
.selector-card:hover .selector-link { gap: 0.75rem; }

/* Master message */
.hero-reframe {
    max-width: 800px;
    margin: 0 auto;
}
.hero-reframe .statement {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: rgba(241,239,245,0.5);
    font-weight: 400;
    line-height: 1.6;
}
.hero-reframe .statement strong {
    color: rgba(241,239,245,0.9);
    font-weight: 600;
}

/* --- Reframe Section --- */
.reframe-section {
    background: var(--bg);
    text-align: center;
    padding: 6rem 1.5rem;
}
.reframe-section h2 {
    font-size: clamp(2rem, 4vw, 3.25rem);
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}
.reframe-section p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto 1rem;
    line-height: 1.75;
}
.stat-inline {
    display: inline;
    font-weight: 600;
    color: var(--text);
}

/* --- Diagnostics Grid Section --- */
.diagnostics-section { background: var(--bg-alt); }
.section-header { margin-bottom: 3rem; }
.section-header .label { margin-bottom: 0.75rem; }
.section-header h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); margin-bottom: 0.75rem; }
.section-header p { color: var(--text-secondary); max-width: 560px; }

.diagnostics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}
.diagnostic-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
    display: flex;
    flex-direction: column;
}
.diagnostic-card:hover {
    border-color: rgba(165,28,96,0.3);
    box-shadow: 0 4px 32px rgba(165,28,96,0.08);
    transform: translateY(-2px);
}
.diagnostic-card.featured { border-color: rgba(165,28,96,0.2); }
.card-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--magenta);
    background: rgba(165,28,96,0.06);
    border: 1px solid rgba(165,28,96,0.15);
    border-radius: 100px;
    padding: 0.3rem 0.75rem;
    margin-bottom: 1.25rem;
    width: fit-content;
}
.diagnostic-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}
.diagnostic-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 1.5rem;
    flex: 1;
}
.timeline-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}
.timeline-badge::before {
    content: '';
    display: block;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--text-muted);
}
.card-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--magenta);
    margin-top: auto;
    transition: gap var(--transition);
}
.diagnostic-card:hover .card-cta { gap: 0.75rem; }

/* --- Proof Strip --- */
.proof-strip {
    background: var(--bg-dark);
    padding: 4rem 0;
}
.proof-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}
.proof-item {}
.proof-number {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.4rem;
}
.proof-label {
    font-size: 0.8rem;
    color: rgba(241,239,245,0.5);
    line-height: 1.4;
}
.proof-source {
    font-size: 0.65rem;
    color: rgba(241,239,245,0.25);
    margin-top: 0.3rem;
}

/* --- About Preview --- */
.about-section { background: var(--bg); }
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}
.about-header { grid-column: 1 / -1; max-width: 600px; }
.about-person {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
}
.about-person h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}
.about-title {
    font-size: 0.8rem;
    color: var(--magenta);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
}
.about-person p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 1rem;
}
.about-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--magenta);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: gap var(--transition);
}
.about-link:hover { gap: 0.6rem; }

/* --- Testimonials --- */
.testimonials-section { background: var(--bg-alt); }
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-top: 3rem;
}
.testimonial-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}
.testimonial-card blockquote {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    font-style: italic;
    flex: 1;
}
.testimonial-card blockquote::before {
    content: '\201C';
    font-size: 1.5rem;
    color: var(--magenta);
    font-style: normal;
    display: block;
    margin-bottom: 0.5rem;
    line-height: 1;
}
.testimonial-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}
.author-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
}
.author-role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* --- Logo Section --- */
.logos-section { background: var(--bg); padding: 4rem 0; }
.logos-header {
    text-align: center;
    margin-bottom: 2.5rem;
}
.logos-header p {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
}
.logos-row {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2.5rem 3rem;
}
.logos-row img {
    height: auto;
    opacity: 0.45;
    filter: grayscale(1);
    transition: opacity var(--transition), filter var(--transition);
}
.logos-row img:hover { opacity: 0.8; filter: grayscale(0); }

/* --- Final CTA --- */
.cta-section {
    background: var(--bg-dark);
    text-align: center;
    padding: 7rem 1.5rem;
}
.cta-section h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: #ffffff;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}
.cta-section p {
    font-size: 1rem;
    color: rgba(241,239,245,0.55);
    max-width: 520px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: #ffffff;
    background: var(--magenta);
    padding: 0.875rem 2rem;
    border-radius: 10px;
    transition: opacity var(--transition), transform var(--transition);
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-2px); }
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    transition: border-color var(--transition), transform var(--transition);
}
.btn-secondary:hover { border-color: rgba(165,28,96,0.4); transform: translateY(-1px); }
.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: rgba(241,239,245,0.7);
    padding: 0.75rem 1.5rem;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 10px;
    transition: border-color var(--transition), color var(--transition);
}
.btn-ghost:hover { border-color: rgba(255,255,255,0.3); color: #ffffff; }
.cta-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* --- Footer --- */
footer {
    background: var(--bg-dark-alt);
    border-top: 1px solid var(--border-dark);
    padding: 3rem 0 2rem;
}
.footer-inner {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2.5rem;
}
.footer-brand p {
    font-size: 0.8rem;
    color: rgba(241,239,245,0.35);
    line-height: 1.6;
    margin-top: 0.75rem;
}
.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.footer-col h4 {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(241,239,245,0.35);
    margin-bottom: 1rem;
}
.footer-col a {
    display: block;
    font-size: 0.85rem;
    color: rgba(241,239,245,0.55);
    margin-bottom: 0.5rem;
    transition: color var(--transition);
}
.footer-col a:hover { color: rgba(241,239,245,0.9); }
.footer-bottom {
    border-top: 1px solid var(--border-dark);
    padding-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.footer-bottom p { font-size: 0.75rem; color: rgba(241,239,245,0.25); }
.footer-bottom a { font-size: 0.75rem; color: rgba(241,239,245,0.25); transition: color var(--transition); }
.footer-bottom a:hover { color: rgba(241,239,245,0.5); }

/* --- Animations --- */
.fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* --- Responsive --- */
@media (max-width: 1024px) {
    .diagnostics-grid { grid-template-columns: 1fr; max-width: 560px; }
    .proof-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; }
    .about-header { grid-column: 1; }
    .testimonials-grid { grid-template-columns: 1fr; max-width: 560px; margin-left: auto; margin-right: auto; }
    .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
    .footer-links { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 1024px) {
    section { padding: 3.5rem 0; }
    .nav-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: var(--nav-height);
        padding: 0 1.5rem;
        flex-wrap: nowrap;
    }
    .nav-links { display: none; }
    .hamburger { display: flex; align-items: center; }
    .selectors { grid-template-columns: 1fr; max-width: 480px; }
    .hero { min-height: auto; padding-bottom: 4rem; }
    .proof-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
    .footer-links { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
}

@media (max-width: 480px) {
    .proof-grid { grid-template-columns: 1fr; }
}

/* --- Hero Content (Option B layout) --- */
.hero {
    align-items: center;
    text-align: center;
    gap: 5rem;
    padding: 6rem 0 6rem;
}
.hero-content { max-width: var(--container); width: 100%; }
.hero-logos {
    width: 100%;
    max-width: var(--container);
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 2.5rem;
    padding-bottom: 2rem;
    text-align: center;
}
.hero-logos-label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(241,239,245,0.6);
    margin-bottom: 1.25rem;
}
.hero-logos-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem 2.5rem;
}
.hero-logos-row img { opacity: 0.45; filter: brightness(0) invert(1); }

/* --- Selectors Section (light version) --- */
.selectors-section {
    background: var(--bg-alt);
    padding: 5rem 0 5rem;
}
.selector-card-light {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem 1.75rem 2.5rem;
    text-align: left;
    cursor: pointer;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
    text-decoration: none;
    display: block;
}
.selector-card-light:hover {
    border-color: rgba(165,28,96,0.3);
    box-shadow: 0 4px 32px rgba(165,28,96,0.08);
    transform: translateY(-2px);
}
.selector-card-light.featured-light { border-color: rgba(165,28,96,0.2); }
.selector-title-light {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: 0.5rem;
    margin-top: 0.75rem;
    letter-spacing: -0.02em;
}
.selector-sub-light {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 1.75rem;
}
.selector-link-light {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--magenta);
    transition: gap var(--transition);
}
.selector-card-light:hover .selector-link-light { gap: 0.75rem; }

@media (max-width: 768px) {
    .hero { text-align: center; }
    .hero-content h1 { font-size: 2rem; }
    .cta-buttons { justify-content: center; }
    .hero-logos { border-top: 1px solid rgba(255,255,255,0.08); }
    .hero-logos-row { justify-content: center; }
}

/* --- Mobile full-screen nav overlay --- */
.mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--bg-dark);
    z-index: 300;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}
.mobile-overlay.active { display: flex; }
.overlay-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: rgba(255,255,255,0.08);
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
}
.overlay-close:hover { background: rgba(255,255,255,0.15); }
.overlay-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    width: 100%;
}
.overlay-nav a {
    font-size: 1.4rem;
    font-weight: 700;
    color: rgba(241,239,245,0.7);
    padding: 0.75rem 1rem;
    text-align: center;
    transition: color 0.2s;
    letter-spacing: -0.02em;
    text-decoration: none;
}
.overlay-nav a:hover { color: #ffffff; }
.overlay-nav .overlay-cta {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: #ffffff;
    background: var(--magenta);
    padding: 0.875rem 2rem;
    border-radius: 10px;
    letter-spacing: 0;
}
.overlay-nav .overlay-cta:hover { opacity: 0.9; }

/* hamburger alignment handled in main responsive block */

/* --- Eyebrow spacing --- */
.hero-content { padding-top: 3.5rem; }

/* --- Brighter logos --- */
.hero-logos-row img { opacity: 0.9; filter: brightness(0) invert(1); }
.hero-logos { padding-bottom: 5rem; }

/* --- More space before white section --- */
.selectors-section { padding-top: 5rem; }