/* ============================================
   NOETRON.IO — Scientific Editorial Design System
   Refined Dark / Research-Grade
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@300;400;500&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ── Design Tokens ── */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-tertiary: #18181f;
    --bg-card: rgba(17, 17, 24, 0.6);
    --bg-card-hover: rgba(24, 24, 31, 0.8);

    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-light: rgba(255, 255, 255, 0.1);
    --border-accent: rgba(0, 210, 220, 0.2);

    --text-primary: #f0f0f5;
    --text-secondary: #9ca3af;
    --text-tertiary: #6b7280;
    --text-inverse: #0a0a0f;

    --accent-start: #00d4de;
    --accent-end: #0891b2;
    --accent-glow: rgba(0, 210, 220, 0.08);
    --accent-text: #67e8f9;

    --green: #34d399;
    --green-dim: rgba(52, 211, 153, 0.15);
    --amber: #fbbf24;
    --amber-dim: rgba(251, 191, 36, 0.15);
    --red: #f87171;
    --red-dim: rgba(248, 113, 113, 0.12);

    --font-heading: 'Plus Jakarta Sans', 'Inter', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* ── Reset ── */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-start) var(--bg-primary);
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::-webkit-scrollbar {
    width: 5px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-start);
    border-radius: 3px;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* ── Background Canvas ── */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ── Background Grid ── */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 0%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 0%, transparent 100%);
}

/* ── Container ── */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ── Navigation ── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: transparent;
    transition: all 0.4s var(--ease-out);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
}

.nav-logo-icon {
    fill: var(--accent-start);
    flex-shrink: 0;
    transition: fill 0.3s;
}

.nav-logo span {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-start), var(--accent-end));
    border-radius: 1px;
    transition: width 0.3s var(--ease-out);
}

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

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

.nav-cta {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.55rem 1.4rem;
    background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
    letter-spacing: 0;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(0, 210, 220, 0.2);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: 0.3s;
}

/* ── Hero ── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 7rem 2rem 4rem;
    z-index: 1;
}

.hero-content {
    max-width: 780px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-text);
    padding: 0.4rem 1rem;
    background: var(--accent-glow);
    border: 1px solid var(--border-accent);
    border-radius: 100px;
    margin-bottom: 2.5rem;
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background: var(--green);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 7vw, 4.2rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.gradient-text {
    background: linear-gradient(135deg, #22d3ee 0%, var(--accent-start) 40%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 620px;
    margin: 0 auto 2.5rem;
}

/* ── Hero CTAs ── */
.hero-ctas {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.9rem 1.5rem;
    background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    color: white;
    border: none;
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
    white-space: nowrap;
    border-radius: var(--radius-sm);
}

.btn-primary:hover {
    box-shadow: 0 8px 24px rgba(0, 210, 220, 0.25);
    transform: translateY(-1px);
}

.btn-primary svg {
    transition: transform 0.3s;
}

.btn-primary:hover svg {
    transform: translateX(3px);
}

.btn-primary.btn-large {
    padding: 1rem 2rem;
    font-size: 0.9rem;
    border-radius: var(--radius-md);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.9rem 1.5rem;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
    white-space: nowrap;
    border-radius: var(--radius-sm);
}

.btn-secondary:hover {
    border-color: var(--accent-start);
    background: var(--accent-glow);
    transform: translateY(-1px);
}

.btn-secondary.btn-large {
    padding: 1rem 2rem;
    font-size: 0.9rem;
    border-radius: var(--radius-md);
}

.btn-secondary svg {
    transition: transform 0.3s;
}

.btn-secondary:hover svg {
    transform: translateX(3px);
}

/* ── Waitlist Form ── */
.waitlist-form {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
}

.input-group {
    display: flex;
    gap: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.input-group:focus-within {
    border-color: var(--accent-start);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.waitlist-input {
    flex: 1;
    padding: 0.9rem 1.2rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--text-primary);
    background: transparent;
    border: none;
    outline: none;
}

.waitlist-input::placeholder {
    color: var(--text-tertiary);
}

.waitlist-msg {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
    animation: fadeIn 0.4s ease-out;
}

.waitlist-msg.success {
    color: var(--green);
    background: var(--green-dim);
    border: 1px solid rgba(52, 211, 153, 0.2);
}

.waitlist-msg.error {
    color: var(--red);
    background: var(--red-dim);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

/* ── Scroll Indicator ── */
.scroll-indicator {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.scroll-indicator span {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent-start), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

/* ── Trust Bar ── */
.trust-bar {
    position: relative;
    z-index: 1;
    padding: 3rem 0;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.trust-label {
    text-align: center;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

/* ── Sections ── */
.section {
    position: relative;
    z-index: 1;
    padding: 7rem 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-text);
    margin-bottom: 1rem;
    padding: 0.3rem 0.9rem;
    background: var(--accent-glow);
    border: 1px solid var(--border-accent);
    border-radius: 100px;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4.5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 1.25rem;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* ── Reveal Animation ── */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Why This Matters ── */
.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.why-card {
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all 0.4s var(--ease-out);
}

.why-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-accent);
    transform: translateY(-3px);
}

.why-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
    color: var(--accent-text);
    margin-bottom: 1.25rem;
}

.why-card h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    letter-spacing: -0.01em;
}

.why-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

.why-bottom {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
}

.why-bottom p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* ── Product Surfaces ── */
.product-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.product-card {
    padding: 2.5rem 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all 0.4s var(--ease-out);
}

.product-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-accent);
    transform: translateY(-3px);
}

.product-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.product-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
    color: var(--accent-text);
    flex-shrink: 0;
}

.product-card-header h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.product-card-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 1.25rem;
}

.product-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.product-features li {
    font-size: 0.82rem;
    color: var(--text-secondary);
    padding-left: 1.25rem;
    position: relative;
    line-height: 1.5;
}

.product-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-start);
    opacity: 0.6;
}

/* ── How It Works — Steps ── */
.steps-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    max-width: 1100px;
    margin: 0 auto;
}

.step-card {
    flex: 1;
    max-width: 240px;
    padding: 2rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    text-align: center;
    position: relative;
    transition: all 0.4s var(--ease-out);
}

.step-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-accent);
    transform: translateY(-4px);
}

.step-number-badge {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--accent-text);
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
}

.step-icon-wrap {
    width: 52px;
    height: 52px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-md);
    color: var(--accent-text);
}

.step-card h3 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    letter-spacing: -0.01em;
}

.step-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    flex-shrink: 0;
    color: var(--text-tertiary);
}

/* ── Why Noetron is Different ── */
.different-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.diff-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.diff-card {
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all 0.4s var(--ease-out);
}

.diff-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-accent);
    transform: translateY(-3px);
}

.diff-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
    color: var(--accent-text);
    margin-bottom: 1rem;
}

.diff-card h3 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.diff-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ── Use Cases ── */
.use-cases-section {
    /* no bg change - sits on primary */
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.use-case-card {
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all 0.4s var(--ease-out);
}

.use-case-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-accent);
    transform: translateY(-3px);
}

.use-case-card h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    letter-spacing: -0.01em;
}

.use-case-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ── Product Proof ── */
.proof-panels {
    max-width: 900px;
    margin: 0 auto;
}

.proof-window {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.proof-window-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1.25rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-subtle);
}

.proof-dots {
    display: flex;
    gap: 6px;
}

.proof-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-light);
}

.proof-dots span:first-child {
    background: #ff5f57;
}

.proof-dots span:nth-child(2) {
    background: #ffbd2e;
}

.proof-dots span:last-child {
    background: #28c840;
}

.proof-window-title {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-tertiary);
    letter-spacing: 0.02em;
}

.proof-window-body {
    padding: 1.5rem;
}

.proof-panel-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.proof-panel {
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
}

.proof-panel-wide {
    grid-column: 1 / -1;
}

.proof-panel-label {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--accent-text);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-subtle);
}

.proof-panel-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Proof lines (skeleton content) */
.proof-line {
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.proof-line-full {
    width: 100%;
}

.proof-line-80 {
    width: 80%;
}

.proof-line-70 {
    width: 70%;
}

.proof-line-60 {
    width: 60%;
}

/* Evidence items */
.proof-evidence-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.proof-tag {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
    flex-shrink: 0;
}

.proof-tag-strong {
    color: var(--green);
    background: var(--green-dim);
}

.proof-tag-moderate {
    color: var(--amber);
    background: var(--amber-dim);
}

.proof-tag-contested {
    color: var(--red);
    background: var(--red-dim);
}

/* Uncertainty items */
.proof-uncertainty-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.proof-bullet {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.proof-bullet-open {
    border: 2px solid var(--amber);
    background: transparent;
}

/* Decision trace */
.proof-trace-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.proof-trace-step {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border: 1px solid var(--border-accent);
    border-radius: 50%;
    color: var(--accent-text);
    flex-shrink: 0;
}

/* Risk items */
.proof-risk-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.proof-risk-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.proof-risk-high {
    background: var(--red);
}

.proof-risk-med {
    background: var(--amber);
}

/* Blocking questions */
.proof-question-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.proof-q-mark {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 800;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--red-dim);
    border: 1px solid rgba(248, 113, 113, 0.2);
    border-radius: 50%;
    color: var(--red);
    flex-shrink: 0;
}

/* ── CTA Section ── */
.cta-section {
    padding: 8rem 0;
    text-align: center;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: 1.25rem;
}

.cta-content .section-desc {
    max-width: 560px;
    margin: 0 auto 2.5rem;
}

.cta-content .section-tag {
    margin-bottom: 1.5rem;
}

.cta-content .waitlist-form {
    margin-top: 0;
}

/* ── Footer ── */
.footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border-subtle);
    padding: 3rem 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-logo {
    fill: var(--text-tertiary);
}

.footer-brand span {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--accent-text);
}

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

/* ── Keyframes ── */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }

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

@keyframes pulse-dot {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.4;
        transform: scale(0.7);
    }
}

@keyframes scrollPulse {

    0%,
    100% {
        opacity: 0.3;
        transform: scaleY(0.5);
        transform-origin: top;
    }

    50% {
        opacity: 1;
        transform: scaleY(1);
    }
}

/* ── Responsive ── */

/* Tablet */
@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .why-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .diff-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps-grid {
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .step-connector {
        display: none;
    }

    .step-card {
        max-width: none;
        flex: 1 1 calc(50% - 0.5rem);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .navbar {
        padding: 0.75rem 1.25rem;
    }

    .nav-links {
        display: none;
    }

    .nav-links.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 10, 15, 0.97);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        padding: 1.5rem 1.5rem 2rem;
        gap: 0.25rem;
        border-bottom: 1px solid var(--border-subtle);
        animation: slideDown 0.3s var(--ease-out);
    }

    .nav-links.mobile-open a {
        display: block;
        padding: 0.75rem 1rem;
        border-radius: var(--radius-sm);
        font-size: 0.95rem;
        color: var(--text-primary);
        transition: background 0.2s;
    }

    .nav-links.mobile-open a:hover,
    .nav-links.mobile-open a:active {
        background: rgba(255, 255, 255, 0.06);
    }

    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
        padding: 8px;
        min-width: 44px;
        min-height: 44px;
        align-items: center;
        justify-content: center;
    }

    /* Hero */
    .hero {
        padding: 5.5rem 1.25rem 3rem;
        min-height: calc(100vh - 60px);
    }

    .hero h1 {
        font-size: clamp(2rem, 9vw, 3rem);
        margin-bottom: 1.25rem;
    }

    .hero-badge {
        font-size: 0.72rem;
        margin-bottom: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
        padding: 0 0.25rem;
    }

    .hero-ctas {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
    }

    .hero-ctas .btn-large {
        width: 100%;
        justify-content: center;
    }

    .scroll-indicator {
        display: none;
    }

    /* Sections */
    .section {
        padding: 4rem 0;
    }

    .section-header {
        margin-bottom: 2.5rem;
        padding: 0 0.25rem;
    }

    .section-header h2 {
        font-size: clamp(1.6rem, 6vw, 2.2rem);
    }

    .section-desc {
        font-size: 0.95rem;
    }

    .container {
        padding: 0 1.25rem;
    }

    /* Steps */
    .steps-grid {
        flex-direction: column;
        gap: 0.75rem;
    }

    .step-card {
        max-width: 100%;
        flex: none;
        padding: 1.75rem 1.5rem;
    }

    /* Diff */
    .diff-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .diff-card {
        padding: 1.75rem 1.5rem;
    }

    /* Use Cases */
    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .use-case-card {
        padding: 1.75rem 1.5rem;
    }

    /* Proof */
    .proof-panel-grid {
        grid-template-columns: 1fr;
    }

    .proof-panel-wide {
        grid-column: 1;
    }

    .proof-window-body {
        padding: 1rem;
    }

    /* CTA */
    .cta-section {
        padding: 5rem 0;
    }

    .cta-content h2 {
        font-size: clamp(1.6rem, 7vw, 2.5rem);
    }

    .waitlist-form {
        max-width: 100%;
    }

    .input-group {
        flex-direction: column;
        border-radius: var(--radius-md);
    }

    .waitlist-input {
        padding: 1rem 1.2rem;
        font-size: 1rem;
        border-bottom: 1px solid var(--border-subtle);
    }

    .btn-primary {
        justify-content: center;
        padding: 1rem 1.5rem;
        font-size: 0.9rem;
    }

    /* Footer */
    .footer {
        padding: 2.5rem 0;
    }

    .footer-links {
        gap: 1.5rem;
    }

    /* Trust bar */
    .trust-bar {
        padding: 2rem 0;
    }

    .trust-label {
        font-size: 0.7rem;
    }
}

/* Small phones */
@media (max-width: 400px) {
    .hero h1 {
        font-size: 1.75rem;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 1rem;
    }

    .proof-panel {
        padding: 1rem;
    }
}

/* Slide-down animation for mobile nav */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

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