/* ═══════════════════════════════════════
   NUROIA — Design System
   Fonts: Space Grotesk (display) + Inter (body)
   ═══════════════════════════════════════ */

:root {
    --bg-deep: #06080f;
    --bg-surface: #0b0e18;
    --bg-card: rgba(12, 16, 28, 0.75);
    --bg-card-hover: rgba(18, 24, 42, 0.85);
    --border-subtle: rgba(255,255,255,0.06);
    --border-active: rgba(56,189,248,0.25);
    --text-primary: #e2e8f0;
    --text-secondary: #7a8ba8;
    --text-muted: #4a5568;
    --accent: #38bdf8;
    --accent-dim: rgba(56,189,248,0.12);
    --accent-glow: rgba(56,189,248,0.2);
    --accent-2: #818cf8;
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --radius: 12px;
    --radius-lg: 20px;
    --ease: cubic-bezier(0.4,0,0.2,1);
}

*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; -webkit-font-smoothing:antialiased; }
body {
    font-family: var(--font-body);
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.65;
    overflow-x: hidden;
}
::selection { background: var(--accent); color: var(--bg-deep); }

/* ═══ Layout ═══ */
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
section { position: relative; z-index: 1; }

/* ═══ Navigation ═══ */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    padding: 0 24px;
    background: rgba(6,8,15,0.65);
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    border-bottom: 1px solid var(--border-subtle);
}
.nav-inner {
    max-width: 1140px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    height: 64px;
}
.logo {
    display: flex; align-items: center; gap: 10px;
    text-decoration: none;
    font-family: var(--font-display); font-weight: 700; font-size: 1.35rem;
    color: var(--text-primary); letter-spacing: -0.01em;
}
.logo-img { border-radius: 6px; }
.logo-mark {
    width: 32px; height: 32px; border-radius: 8px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    display: flex; align-items: center; justify-content: center;
}
.logo-mark::after {
    content: ''; width: 14px; height: 14px;
    border: 2px solid white; border-radius: 50%;
}
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
    color: var(--text-secondary); text-decoration: none;
    font-size: 0.9rem; font-weight: 400;
    transition: color 0.3s var(--ease);
}
.nav-links a:hover,
.nav-links a.active { color: var(--text-primary); }
.nav-cta {
    padding: 8px 20px !important;
    background: var(--accent-dim) !important;
    border: 1px solid var(--border-active);
    border-radius: 8px;
    color: var(--accent) !important; font-weight: 500 !important;
}
.nav-cta:hover { background: rgba(56,189,248,0.2) !important; }
.lang-switch {
    background: none; border: 1px solid var(--border-subtle);
    color: var(--text-secondary); padding: 6px 14px; border-radius: 6px;
    cursor: pointer; font-family: var(--font-body); font-size: 0.8rem;
    font-weight: 500; letter-spacing: 0.05em; transition: all 0.3s var(--ease);
}
.lang-switch:hover { border-color: var(--text-secondary); color: var(--text-primary); }
.mobile-toggle {
    display: none; background: none; border: none;
    color: var(--text-primary); cursor: pointer; padding: 8px;
}

/* ═══ Hero ═══ */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    padding: 100px 0 80px;
}
.hero .wrap {
    display: grid; grid-template-columns: 1fr;
    gap: 48px; align-items: center; z-index: 1;
    text-align: center;
}
.hero-desc { margin-left: auto; margin-right: auto; }
.hero-actions { justify-content: center; }
.hero-label {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 14px; background: var(--accent-dim);
    border: 1px solid var(--border-active); border-radius: 100px;
    font-size: 0.8rem; color: var(--accent); font-weight: 500;
    margin-bottom: 28px;
}
.hero-label .dot {
    width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
    animation: blink 2s ease-in-out infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.6rem, 5.5vw, 4.2rem);
    font-weight: 700; line-height: 1.15;
    letter-spacing: -0.03em; margin-bottom: 24px;
}
.hero h1 em,
.section-title em {
    font-style: normal;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: 1.08rem; color: var(--text-secondary);
    max-width: 460px; line-height: 1.7; margin-bottom: 36px;
}
.hero-actions { display: flex; align-items: center; gap: 16px; margin-bottom: 52px; }

.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: var(--bg-deep); border: none; border-radius: 10px;
    font-family: var(--font-body); font-size: 0.95rem; font-weight: 600;
    cursor: pointer; text-decoration: none;
    transition: all 0.3s var(--ease);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px var(--accent-glow); }
.btn-primary svg { width: 18px; height: 18px; transition: transform 0.3s var(--ease); }
.btn-primary:hover svg { transform: translateX(3px); }

.btn-ghost {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 24px; background: transparent;
    color: var(--text-secondary); border: 1px solid var(--border-subtle);
    border-radius: 10px; font-family: var(--font-body); font-size: 0.95rem;
    font-weight: 500; cursor: pointer; text-decoration: none;
    transition: all 0.3s var(--ease);
}
.btn-ghost:hover { border-color: var(--text-secondary); color: var(--text-primary); }

.hero-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.metric { padding: 16px 0; border-top: 1px solid var(--border-subtle); }
.metric-value {
    font-family: var(--font-display); font-size: 1.75rem; font-weight: 700;
    letter-spacing: -0.02em;
}
.metric-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; }


/* ═══ Section Common ═══ */
.section { padding: 100px 0; }
.section-eyebrow {
    font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--accent); margin-bottom: 12px;
}
.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 700; letter-spacing: -0em; line-height: 1.35;
    margin-bottom: 16px;
}
.section-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 560px;
    line-height: 1.7;
}
.section-header { margin-bottom: 56px; }
.section-header.center { text-align: center; }
.section-header.center .section-desc { margin: 0 auto; }

/* ═══ Problem ═══ */
.problem-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.problem-card {
    padding: 32px 28px; background: var(--bg-card);
    border: 1px solid var(--border-subtle); border-radius: var(--radius);
    transition: all 0.3s var(--ease);
}
.problem-card:hover { border-color: var(--border-active); background: var(--bg-card-hover); transform: translateY(-3px); }
.problem-icon {
    width: 44px; height: 44px; border-radius: 10px; background: var(--accent-dim);
    display: flex; align-items: center; justify-content: center; margin-bottom: 20px;
}
.problem-icon svg { width: 22px; height: 22px; color: var(--accent); }
.problem-card h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; margin-bottom: 10px; }
.problem-card p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.6; }

/* ═══ Solution ═══ */
.solution-section { background: linear-gradient(180deg, transparent, rgba(56,189,248,0.015), transparent); }
.solution-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.solution-desc { font-size: 1.05rem; color: var(--text-secondary); line-height: 1.75; margin-top: 20px; }
.solution-visual {
    padding: 32px; background: var(--bg-card);
    border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
    position: relative; overflow: hidden;
}
#solutionWave { width: 100%; height: 200px; display: block; }
.solution-visual::before {
    content: ''; position: absolute; top: -50%; right: -50%;
    width: 100%; height: 100%;
    background: radial-gradient(circle, var(--accent-dim) 0%, transparent 70%);
    pointer-events: none;
}

/* ═══ Features ═══ */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card {
    padding: 32px 28px; background: var(--bg-card);
    border: 1px solid var(--border-subtle); border-radius: var(--radius);
    transition: all 0.3s var(--ease); position: relative; overflow: hidden;
}
.feature-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0; transition: opacity 0.3s var(--ease);
}
.feature-card:hover::before { opacity: 1; }
.feature-card:hover { border-color: var(--border-active); background: var(--bg-card-hover); transform: translateY(-3px); }
.feature-num { font-family: var(--font-display); font-size: 0.7rem; font-weight: 700; color: var(--text-muted); letter-spacing: 0.1em; margin-bottom: 20px; }
.feature-card h3 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; margin-bottom: 10px; }
.feature-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }

/* ═══ How It Works ═══ */
.steps-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
.steps-row::before {
    content: ''; position: absolute; top: 48px; left: 15%; right: 15%; height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-active), var(--border-active), transparent);
}
.step { text-align: center; position: relative; }
.step-num {
    width: 64px; height: 64px; border-radius: 50%; background: var(--bg-card);
    border: 1px solid var(--border-active);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 24px;
    font-family: var(--font-display); font-size: 1.25rem; font-weight: 700;
    color: var(--accent); position: relative; z-index: 2;
}
.step h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; margin-bottom: 10px; }
.step p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; max-width: 280px; margin: 0 auto; }

/* Devices */
.devices-row { display: flex; gap: 20px; justify-content: center; }
.device-badge {
    padding: 16px 28px; background: var(--bg-card);
    border: 1px solid var(--border-subtle); border-radius: var(--radius);
    display: flex; align-items: center; gap: 14px;
    transition: all 0.3s var(--ease);
}
.device-badge:hover { border-color: var(--border-active); }
.device-badge svg { width: 28px; height: 28px; color: var(--accent); }
.device-name { font-family: var(--font-display); font-weight: 600; font-size: 0.95rem; }
.device-type { font-size: 0.78rem; color: var(--text-muted); }

/* ═══ Science Preview (landing page) ═══ */
.science-section { border-top: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); }
.science-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.science-card { padding: 28px; background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: var(--radius); }
.science-card h4 { font-family: var(--font-display); font-size: 0.95rem; font-weight: 600; margin-bottom: 8px; color: var(--accent); }
.science-card p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; }
.science-quote {
    grid-column: 1 / -1; padding: 32px; background: var(--bg-card);
    border-left: 2px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0;
}
.science-quote blockquote { font-size: 1rem; color: var(--text-secondary); font-style: italic; line-height: 1.7; }
.science-quote cite { display: block; margin-top: 12px; font-style: normal; font-size: 0.82rem; color: var(--text-muted); }
.science-link { text-align: center; margin-top: 32px; }
.science-link a {
    color: var(--accent); text-decoration: none; font-weight: 500;
    font-size: 0.95rem; transition: all 0.3s var(--ease);
    display: inline-flex; align-items: center; gap: 6px;
}
.science-link a:hover { gap: 10px; }

/* ═══ Clinic / Partners ═══ */
.clinic-section {
    border-top: 1px solid var(--border-subtle);
    background: linear-gradient(180deg, transparent, rgba(129,140,248,0.015), transparent);
}
.clinic-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}
.clinic-features {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.clinic-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.clinic-feature svg {
    width: 28px;
    height: 28px;
    min-width: 28px;
    color: var(--accent-2);
    margin-top: 2px;
}
.clinic-feature strong {
    display: block;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
}
.clinic-feature p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.55;
    margin: 0;
}
.clinic-form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 36px;
}
.clinic-form-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 6px;
}
.clinic-form-card > p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}
#partnerForm {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
#partnerForm .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
#partnerForm input,
#partnerForm select {
    padding: 12px 16px;
    background: rgba(6,8,15,0.6);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.3s var(--ease);
    width: 100%;
}
#partnerForm input::placeholder { color: var(--text-muted); }
#partnerForm input:focus,
#partnerForm select:focus { border-color: var(--accent-2); }
#partnerForm select { appearance: none; cursor: pointer; }
#partnerForm select option { background: var(--bg-surface); color: var(--text-primary); }
.checkbox-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin: 4px 0;
}
.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
}
.checkbox-group input[type="checkbox"] {
    width: 16px !important;
    min-width: 16px;
    height: 16px;
    padding: 0 !important;
    accent-color: var(--accent-2);
    cursor: pointer;
}
#partnerForm .btn-primary {
    width: 100%;
    justify-content: center;
    margin-top: 4px;
}

/* ═══ CTA ═══ */
.cta-section { padding: 120px 0; }
.cta-box { max-width: 580px; margin: 0 auto; text-align: center; }
.cta-box .section-desc { margin: 0 auto 32px; }
.email-form { display: flex; gap: 10px; margin-bottom: 16px; }
.email-form input {
    flex: 1; padding: 14px 20px; background: var(--bg-card);
    border: 1px solid var(--border-subtle); border-radius: 10px;
    color: var(--text-primary); font-family: var(--font-body); font-size: 0.95rem;
    outline: none; transition: border-color 0.3s var(--ease);
}
.email-form input::placeholder { color: var(--text-muted); }
.email-form input:focus { border-color: var(--accent); }
.email-form button {
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: var(--bg-deep); border: none; border-radius: 10px;
    font-family: var(--font-body); font-size: 0.95rem; font-weight: 600;
    cursor: pointer; transition: all 0.3s var(--ease);
    white-space: nowrap; min-width: 140px;
}
.email-form button:hover { transform: translateY(-2px); box-shadow: 0 8px 30px var(--accent-glow); }
.email-form button:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.form-msg { font-size: 0.85rem; min-height: 24px; margin-bottom: 8px; }
.form-msg.success { color: #34d399; }
.form-msg.error { color: #f87171; }
.privacy-note { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 28px; }
.privacy-note .footnote { color: var(--text-muted); font-size: 0.7rem; }
.perks { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }
.perk { font-size: 0.85rem; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.perk svg { width: 14px; height: 14px; color: var(--accent); }
.spinner { width: 18px; height: 18px; border: 2px solid rgba(6,8,15,0.3); border-top-color: var(--bg-deep); border-radius: 50%; animation: spin 0.7s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }
.hidden { display: none !important; }

/* ═══ Footer ═══ */
.footer {
    position: relative; z-index: 1;
    border-top: 1px solid var(--border-subtle);
    padding: 48px 0 24px; background: var(--bg-surface);
}
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 32px; }
.footer-tagline { color: var(--text-muted); font-size: 0.85rem; margin-top: 6px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.85rem; transition: color 0.3s var(--ease); }
.footer-links a:hover { color: var(--text-primary); }
.footer-bottom { text-align: center; padding-top: 24px; border-top: 1px solid var(--border-subtle); font-size: 0.8rem; color: var(--text-muted); }

/* ═══ Animations ═══ */
.fade-up { opacity: 0; transform: translateY(32px); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* Staggered delays for grid children */
.fade-up.delay-1 { transition-delay: 0.1s; }
.fade-up.delay-2 { transition-delay: 0.2s; }
.fade-up.delay-3 { transition-delay: 0.3s; }
.fade-up.delay-4 { transition-delay: 0.4s; }
.fade-up.delay-5 { transition-delay: 0.5s; }

/* Hero entrance animations */
.hero-label { opacity: 0; transform: translateY(20px); animation: heroFadeIn 0.8s cubic-bezier(0.16,1,0.3,1) 0.2s forwards; }
.hero h1 { opacity: 0; transform: translateY(20px); animation: heroFadeIn 0.8s cubic-bezier(0.16,1,0.3,1) 0.4s forwards; }
.hero-desc { opacity: 0; transform: translateY(20px); animation: heroFadeIn 0.8s cubic-bezier(0.16,1,0.3,1) 0.6s forwards; }
.hero-actions { opacity: 0; transform: translateY(20px); animation: heroFadeIn 0.8s cubic-bezier(0.16,1,0.3,1) 0.8s forwards; }
.hero-metrics { opacity: 0; transform: translateY(20px); animation: heroFadeIn 0.8s cubic-bezier(0.16,1,0.3,1) 1.0s forwards; }

@keyframes heroFadeIn {
    to { opacity: 1; transform: translateY(0); }
}

/* Gradient text shimmer */
.gradient-text {
    background-size: 200% auto !important;
    animation: gradientShimmer 4s ease-in-out infinite;
}
@keyframes gradientShimmer {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

/* Glow pulse on hero CTA */
.btn-primary {
    position: relative;
}
.hero-actions .btn-primary::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    z-index: -1;
    opacity: 0;
    filter: blur(12px);
    animation: ctaGlow 3s ease-in-out infinite;
}
@keyframes ctaGlow {
    0%, 100% { opacity: 0; }
    50% { opacity: 0.5; }
}

/* Card hover glow */
.problem-card, .feature-card, .science-card, .research-card {
    position: relative;
    overflow: hidden;
}
.problem-card::after, .feature-card::after, .science-card::after, .research-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(56,189,248,0.06), transparent 60%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s ease;
}
.problem-card:hover::after, .feature-card:hover::after, .science-card:hover::after, .research-card:hover::after {
    opacity: 1;
}

/* Step number pulse */
.step-num {
    transition: all 0.4s var(--ease);
}
.step:hover .step-num {
    box-shadow: 0 0 24px var(--accent-glow);
    border-color: var(--accent);
}

/* ═══ Science Page Specific ═══ */
.science-hero {
    padding: 120px 0 60px;
    text-align: center;
}
.back-link {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--accent); text-decoration: none; font-size: 0.9rem;
    margin-bottom: 32px; transition: gap 0.3s var(--ease);
}
.back-link:hover { gap: 10px; }

.science-content { max-width: 800px; margin: 0 auto; }
.science-content h2 {
    font-family: var(--font-display);
    font-size: 1.8rem; font-weight: 700;
    margin-top: 56px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.science-content h2:first-child { margin-top: 0; }
.science-content h3 {
    font-family: var(--font-display);
    font-size: 1.3rem; font-weight: 600;
    margin: 32px 0 12px;
    color: var(--text-primary);
}
.science-content p {
    color: var(--text-secondary);
    line-height: 1.25;
    margin-bottom: 0;
    font-size: 1rem;
}
.science-content .citation {
    background: rgba(56,189,248,0.04);
    border-left: 3px solid var(--accent);
    padding: 16px 20px; margin: 20px 0;
    font-size: 0.88rem; color: var(--text-secondary);
    line-height: 1.6; border-radius: 0 8px 8px 0;
}
.science-content .citation strong { color: var(--text-primary); }

.science-content .research-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px; margin: 24px 0;
}
.science-content .research-grid--2x2 {
    grid-template-columns: repeat(2, 1fr);
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}
.science-content .research-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius); padding: 24px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s var(--ease);
}
.science-content .research-card:hover {
    border-color: var(--border-active);
    background: var(--bg-card-hover);
    transform: translateY(-3px);
}
.science-content .research-card h4 {
    font-family: var(--font-display); font-size: 0.92rem;
    font-weight: 600; color: var(--accent); margin-bottom: 8px;
}
.science-content .research-card p {
    font-size: 0.85rem; margin: 0; line-height: 1.55;
}

.science-content .ref-list {
    margin: 15px 0;
    padding-left: 20px;
    color: var(--text-secondary);
    font-size: 1rem;
}
.science-content .ref-list li {
    padding: 0;
    border-bottom: 1px solid var(--border-subtle);
    line-height: 1.6;
    font-size: 1rem;
}
.science-content .ref-list li:last-child { border-bottom: none; }
.science-content .ref-list em { color: var(--text-primary); font-style: italic; }

/* ═══ Responsive ═══ */
@media (max-width: 1024px) {
    .hero .wrap { grid-template-columns: 1fr; gap: 32px; }
    .solution-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    .nav-links.open {
        display: flex; flex-direction: column;
        position: absolute; top: 64px; left: 0; right: 0;
        background: rgba(6,8,15,0.95); backdrop-filter: blur(20px);
        padding: 24px; gap: 16px; border-bottom: 1px solid var(--border-subtle);
    }
    .problem-grid, .features-grid, .steps-row { grid-template-columns: 1fr; }
    .steps-row::before { display: none; }
    .hero-metrics { grid-template-columns: 1fr; gap: 12px; }
    .hero h1 { font-size: 2.2rem; }
    .email-form { flex-direction: column; }
    .perks { flex-direction: column; align-items: center; }
    .science-grid { grid-template-columns: 1fr; }
    .devices-row { flex-direction: column; align-items: center; }
    .footer-inner { flex-direction: column; gap: 24px; text-align: center; }
    .footer-links { flex-direction: column; gap: 12px; align-items: center; }
    .science-content .research-grid { grid-template-columns: 1fr; }
    .science-content .research-grid--2x2 { grid-template-columns: 1fr; max-width: 100%; }
    .section { padding: 60px 0; }
    .cta-section { padding: 80px 0; }
    .hero { padding: 80px 0 60px; min-height: auto; }
    .hero-desc { max-width: 100%; }
    .hero h1 { font-size: 2rem; }
    .section-title { font-size: 1.5rem; }
    .science-hero { padding: 100px 0 40px; }
    .science-content h2 { font-size: 1.4rem; }
    .science-content h3 { font-size: 1.1rem; }
    .solution-visual { padding: 16px; }
    #solutionWave { height: 140px; }
    .clinic-grid { grid-template-columns: 1fr; gap: 40px; }
    #partnerForm .form-row { grid-template-columns: 1fr; }
    .checkbox-group { grid-template-columns: 1fr; }
}
.gradient-text {
    background: linear-gradient(135deg, var(--accent), var(--accent-2), var(--accent));
    background-size: 200% auto;
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    font-style: normal;
    letter-spacing: 0.01em;
}
/* ═══ EEG Brainwave Dividers ═══ */
.eeg-divider {
    position: relative;
    z-index: 1;
    height: 60px;
    overflow: hidden;
    opacity: 0.5;
}
.eeg-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

#neuroFlow {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
}
.nav, .hero, .section, .footer, .cta-section {
    position: relative;
    z-index: 1;
}

/* ═══════════════════════════════════════
   Cookie Consent Banner & Settings Panel
   ═══════════════════════════════════════ */

/* Overlay */
.cookie-overlay {
    position: fixed; inset: 0; z-index: 9998;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.35s var(--ease);
    pointer-events: none;
}
.cookie-overlay-visible {
    opacity: 1;
    pointer-events: auto;
}

/* Banner */
.cookie-banner {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 9999;
    padding: 24px;
    transform: translateY(100%);
    transition: transform 0.4s var(--ease);
}
.cookie-banner-visible {
    transform: translateY(0);
}
.cookie-banner-hidden {
    transform: translateY(100%);
}
.cookie-banner-content {
    max-width: 1140px; margin: 0 auto;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    display: flex; align-items: center; gap: 32px;
    box-shadow: 0 -8px 40px rgba(0,0,0,0.4);
}
.cookie-banner-text h3 {
    font-family: var(--font-display);
    font-size: 1.1rem; font-weight: 600;
    margin-bottom: 6px; color: var(--text-primary);
}
.cookie-banner-text p {
    font-size: 0.88rem; color: var(--text-secondary);
    line-height: 1.6; margin: 0;
}
.cookie-banner-text a {
    color: var(--accent); text-decoration: none;
    transition: color 0.2s var(--ease);
}
.cookie-banner-text a:hover { color: var(--text-primary); }
.cookie-banner-actions {
    display: flex; gap: 10px; flex-shrink: 0;
}

/* Buttons */
.cookie-btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.88rem; font-weight: 600;
    cursor: pointer;
    transition: all 0.25s var(--ease);
    white-space: nowrap; border: none;
}
.cookie-btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: var(--bg-deep);
}
.cookie-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--accent-glow);
}
.cookie-btn-secondary {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
}
.cookie-btn-secondary:hover {
    border-color: var(--text-secondary);
    background: var(--bg-card-hover);
}
.cookie-btn-ghost {
    background: transparent;
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}
.cookie-btn-ghost:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

/* Settings Panel */
.cookie-panel {
    position: fixed; inset: 0; z-index: 10000;
    display: flex; align-items: center; justify-content: center;
    padding: 24px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--ease);
}
.cookie-panel-visible {
    opacity: 1;
    pointer-events: auto;
}
.cookie-panel-inner {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 520px; width: 100%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    transform: scale(0.95);
    transition: transform 0.3s var(--ease);
}
.cookie-panel-visible .cookie-panel-inner {
    transform: scale(1);
}
.cookie-panel-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 24px;
}
.cookie-panel-header h3 {
    font-family: var(--font-display);
    font-size: 1.2rem; font-weight: 600;
    color: var(--text-primary);
}
.cookie-panel-close {
    background: none; border: none; color: var(--text-secondary);
    font-size: 1.6rem; cursor: pointer; padding: 4px 8px;
    line-height: 1; transition: color 0.2s var(--ease);
}
.cookie-panel-close:hover { color: var(--text-primary); }

/* Categories */
.cookie-categories {
    display: flex; flex-direction: column; gap: 16px;
    margin-bottom: 28px;
}
.cookie-category {
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px; padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
}
.cookie-category-info { flex: 1; }
.cookie-category-info strong {
    display: block; font-size: 0.92rem;
    color: var(--text-primary); margin-bottom: 4px;
}
.cookie-category-info p {
    font-size: 0.8rem; color: var(--text-secondary);
    line-height: 1.5; margin: 0;
}

/* Toggle switch */
.cookie-toggle {
    position: relative; width: 44px; height: 24px; flex-shrink: 0;
}
.cookie-toggle input {
    opacity: 0; width: 0; height: 0; position: absolute;
}
.cookie-toggle-slider {
    position: absolute; inset: 0;
    background: var(--bg-card-hover);
    border: 1px solid var(--border-subtle);
    border-radius: 24px; cursor: pointer;
    transition: all 0.3s var(--ease);
}
.cookie-toggle-slider::before {
    content: ''; position: absolute;
    left: 3px; top: 50%; transform: translateY(-50%);
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--text-secondary);
    transition: all 0.3s var(--ease);
}
.cookie-toggle input:checked + .cookie-toggle-slider {
    background: var(--accent-dim);
    border-color: var(--border-active);
}
.cookie-toggle input:checked + .cookie-toggle-slider::before {
    left: 23px;
    background: var(--accent);
}
.cookie-toggle-locked .cookie-toggle-slider {
    opacity: 0.5; cursor: not-allowed;
}

/* Panel footer */
.cookie-panel-footer {
    display: flex; gap: 10px; justify-content: flex-end;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .cookie-banner-content {
        flex-direction: column; gap: 16px;
        padding: 20px;
    }
    .cookie-banner-actions {
        width: 100%;
        flex-direction: column;
    }
    .cookie-banner-actions .cookie-btn {
        width: 100%; text-align: center;
    }
    .cookie-panel-inner {
        padding: 20px;
    }
    .cookie-panel-footer {
        flex-direction: column;
    }
    .cookie-panel-footer .cookie-btn {
        width: 100%; text-align: center;
    }
}