/**
 * C3 Landing Page — LeadtheAI Design System
 * Ink + Signal Amber. Light-first, flat-with-hairlines.
 */

/* ===== Design Tokens ===== */
:root {
    --ink-1000: #0B0F14;
    --ink-900:  #11161D;
    --ink-800:  #1A2230;
    --ink-700:  #2A3445;
    --ink-600:  #3E4A5E;
    --ink-500:  #5C6878;
    --ink-400:  #8A95A4;
    --ink-300:  #B7BFCB;
    --ink-200:  #D7DCE3;
    --ink-100:  #ECEFF3;
    --ink-50:   #F6F7F9;
    --ink-0:    #FDFDFC;

    --signal-900: #7E4A12;
    --signal-700: #B97324;
    --signal-500: #E8A23A;
    --signal-300: #F1C57A;
    --signal-100: #FBEBC9;

    --ok:    #3FB37F;
    --warn:  #E8B23A;
    --error: #D3573D;
    --info:  #5B9BD8;

    /* Semantic */
    --color-bg-primary:    var(--ink-0);
    --color-bg-secondary:  var(--ink-50);
    --color-bg-tertiary:   var(--ink-100);
    --color-text-primary:  var(--ink-1000);
    --color-text-secondary: var(--ink-600);
    --color-text-muted:    var(--ink-500);
    --color-accent-primary: var(--signal-500);
    --color-accent-hover:   var(--signal-700);
    --color-accent-light:   var(--signal-700);
    --color-success: var(--ok);
    --color-warning: var(--warn);
    --color-error:   var(--error);
    --color-border:  var(--ink-100);
    --color-border-strong: var(--ink-200);
    --color-glow:    rgba(232,162,58,.25);

    --font-display: 'Manrope', 'General Sans', 'Inter Tight', system-ui, sans-serif;
    --font-sans:    'Inter Tight', 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono:    'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;

    --transition-fast:   0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow:   0.4s ease;

    --container-max-width: 1280px;
    --section-spacing: 7.5rem; /* 120px */
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.55;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
}

ul {
    list-style: none;
}

/* ===== Eyebrow utility ===== */
.eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-500);
    margin-bottom: 1.25rem;
}

.eyebrow::before {
    content: '─── ';
    color: var(--ink-300);
}

/* ===== Navigation ===== */
.landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 64px;
    background: rgba(253,253,252,.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--ink-100);
    transition: background var(--transition-fast), box-shadow var(--transition-fast);
}

.landing-nav.scrolled {
    background: rgba(253,253,252,.98);
    box-shadow: 0 1px 0 var(--ink-100), 0 4px 16px rgba(11,15,20,.06);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 64px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--ink-1000);
    letter-spacing: -0.01em;
}

.nav-logo i {
    font-size: 1.25rem;
    color: var(--signal-500);
}

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

.nav-link {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--ink-600);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--ink-1000);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--ink-600);
    padding: 0.5rem;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.55;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background var(--transition-fast), color var(--transition-fast),
                border-color var(--transition-fast), transform var(--transition-fast);
}

.btn:active {
    transform: translateY(1px);
}

/* Primary = signal (one per viewport) */
.btn-primary {
    background: var(--signal-500);
    color: var(--ink-1000);
    border-color: transparent;
}

.btn-primary:hover {
    background: var(--signal-700);
    color: var(--ink-0);
}

/* Secondary = ink */
.btn-secondary {
    background: var(--ink-1000);
    color: var(--ink-0);
    border-color: transparent;
}

.btn-secondary:hover {
    background: var(--ink-800);
}

/* Ghost = ink-0 + ink-200 border */
.btn-outline {
    background: var(--ink-0);
    color: var(--ink-1000);
    border-color: var(--ink-200);
}

.btn-outline:hover {
    background: var(--ink-50);
}

.btn-large {
    padding: 14px 24px;
    font-size: 1rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ===== Mobile Navigation ===== */
.mobile-nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--ink-0);
    border-bottom: 1px solid var(--ink-100);
    padding: 1rem 2rem;
    flex-direction: column;
    gap: 1rem;
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav-link {
    display: block;
    padding: 0.75rem 0;
    color: var(--ink-600);
    border-bottom: 1px solid var(--ink-100);
}

.mobile-nav-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding-top: 1rem;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 64px 6rem;
    position: relative;
    overflow: hidden;
    background: var(--ink-0);
    border-bottom: 1px solid var(--ink-100);
}

.hero-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
}

.hero-content {
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--signal-100);
    border: 1px solid var(--signal-300);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--signal-900);
    margin-bottom: 1.5rem;
}

.hero-badge i {
    font-size: 0.875rem;
    color: var(--signal-500);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 500;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--ink-1000);
    margin-bottom: 1.5rem;
    text-wrap: balance;
}

.hero-description {
    font-family: var(--font-sans);
    font-size: 1.1875rem;
    line-height: 1.55;
    color: var(--ink-500);
    margin-bottom: 2rem;
    max-width: 520px;
    text-wrap: pretty;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: left;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 500;
    letter-spacing: -0.035em;
    color: var(--ink-1000);
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-400);
    margin-top: 2px;
}

/* ===== Hero Visual ===== */
.hero-visual {
    position: relative;
    height: 500px;
}

.hero-dashboard {
    position: absolute;
    inset: 0;
    background: var(--ink-50);
    border: 1px solid var(--ink-100);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 24px 48px rgba(11,15,20,.10), 0 6px 12px rgba(11,15,20,.06);
}

.dashboard-header {
    padding: 1rem;
    border-bottom: 1px solid var(--ink-100);
    background: var(--ink-0);
}

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

.dashboard-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--ink-200);
}

.dashboard-dots span:nth-child(1) { background: var(--error); }
.dashboard-dots span:nth-child(2) { background: var(--warn); }
.dashboard-dots span:nth-child(3) { background: var(--ok); }

.dashboard-content {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.dashboard-alert {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--ink-0);
    border-radius: 8px;
    border: 1px solid var(--ink-100);
    animation: slideIn 0.5s ease forwards;
    opacity: 0;
}

.dashboard-alert:nth-child(1) { animation-delay: 0.2s; }
.dashboard-alert:nth-child(2) { animation-delay: 0.4s; }
.dashboard-alert:nth-child(3) { animation-delay: 0.6s; }

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-12px); }
    to   { opacity: 1; transform: translateX(0); }
}

.alert-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-50);
    border-radius: 8px;
    font-size: 1.125rem;
}

.alert-info { flex: 1; }

.alert-title {
    font-weight: 500;
    color: var(--ink-1000);
    font-size: 0.9375rem;
}

.alert-desc {
    font-size: 0.8125rem;
    color: var(--ink-500);
}

.alert-status {
    padding: 3px 10px;
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.alert-status.analyzing {
    background: var(--signal-100);
    color: var(--signal-900);
}

.alert-status.success {
    background: rgba(63,179,127,.12);
    color: #1E6B47;
}

.alert-status.active {
    background: rgba(91,155,216,.12);
    color: #1B4E7A;
}

.hero-glow { display: none; }

/* ===== Trusted By Section ===== */
.trusted-by {
    padding: 3rem 64px;
    background: var(--ink-50);
    border-bottom: 1px solid var(--ink-100);
}

.trusted-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    text-align: center;
}

.trusted-label {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-400);
    margin-bottom: 1.5rem;
}

.trusted-logos {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 3rem;
}

.trusted-logo {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--ink-400);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.trusted-logo:hover { color: var(--ink-700); }
.trusted-logo i { font-size: 1.25rem; }

/* ===== Section Base ===== */
section {
    padding: var(--section-spacing) 64px;
    border-bottom: 1px solid var(--ink-100);
}

.section-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--ink-100);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-700);
    margin-bottom: 1.25rem;
}

.section-badge i {
    color: var(--ink-600);
    font-size: 0.875rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 500;
    letter-spacing: -0.015em;
    line-height: 1.15;
    color: var(--ink-1000);
    margin-bottom: 1rem;
    text-wrap: balance;
}

.section-description {
    font-size: 1.1875rem;
    color: var(--ink-500);
    max-width: 640px;
    margin: 0 auto;
    text-wrap: pretty;
}

/* ===== Features Section ===== */
.features {
    background: var(--ink-50);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    position: relative;
    padding: 32px;
    background: var(--ink-0);
    border: 1px solid var(--ink-100);
    border-radius: 14px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
    border-color: var(--ink-200);
    box-shadow: 0 6px 16px rgba(11,15,20,.06), 0 2px 4px rgba(11,15,20,.04);
}

.feature-card.featured {
    border-color: var(--signal-300);
    background: linear-gradient(160deg, var(--ink-0) 0%, var(--signal-100) 100%);
}

.feature-badge {
    position: absolute;
    top: -11px;
    right: 20px;
    padding: 3px 10px;
    background: var(--signal-500);
    color: var(--ink-1000);
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    border-radius: 999px;
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-50);
    border: 1px solid var(--ink-100);
    border-radius: 14px;
    font-size: 1.5rem;
    color: var(--ink-700);
    margin-bottom: 1.25rem;
}

.feature-card.featured .feature-icon {
    background: var(--signal-100);
    border-color: var(--signal-300);
    color: var(--signal-900);
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 500;
    letter-spacing: -0.005em;
    color: var(--ink-1000);
    margin-bottom: 0.625rem;
}

.feature-description {
    font-size: 0.9375rem;
    color: var(--ink-500);
    margin-bottom: 1.25rem;
    line-height: 1.55;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9375rem;
    color: var(--ink-600);
}

.feature-list i {
    color: var(--ok);
    font-size: 1rem;
    flex-shrink: 0;
}

/* ===== How It Works Section ===== */
.how-it-works {
    background: var(--ink-0);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.step {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: center;
}

.step:nth-child(even) { direction: rtl; }
.step:nth-child(even) > * { direction: ltr; }

.step-number {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-1000);
    color: var(--signal-500);
    border-radius: 50%;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    flex-shrink: 0;
}

.step-content { max-width: 420px; }

.step-title {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--ink-1000);
    margin-bottom: 0.625rem;
}

.step-description {
    font-size: 1rem;
    color: var(--ink-500);
    line-height: 1.55;
}

.step-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
}

/* Step Visuals */
.step-connector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    position: relative;
}

.step-connector::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px dashed var(--ink-200);
    border-radius: 50%;
}

.connector-node {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-50);
    border: 1px solid var(--ink-200);
    border-radius: 50%;
    font-size: 1.125rem;
    color: var(--ink-600);
    animation: stepPulse 2s ease-in-out infinite;
}

.connector-center {
    grid-column: 2;
    grid-row: 1;
    width: 64px;
    height: 64px;
    background: var(--ink-1000);
    color: var(--signal-500);
    font-size: 1.5rem;
    border: none;
}

.step-ai {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-core {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-1000);
    border-radius: 50%;
    font-size: 1.75rem;
    color: var(--signal-500);
    animation: stepPulse 2s ease-in-out infinite;
    position: relative;
    z-index: 1;
}

.ai-pulse {
    position: absolute;
    inset: 0;
    border: 1.5px solid var(--ink-300);
    border-radius: 50%;
    animation: ripple 2s ease-out infinite;
}

.ai-pulse:nth-child(2) { animation-delay: 0.4s; }
.ai-pulse:nth-child(3) { animation-delay: 0.8s; }

@keyframes stepPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.04); }
}

@keyframes ripple {
    0% { transform: scale(1); opacity: 0.5; }
    100% { transform: scale(2.5); opacity: 0; }
}

.step-response {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.response-check {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ok);
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--ink-0);
    animation: scaleIn 0.5s ease forwards;
    opacity: 0;
}

.response-check:nth-child(1) { animation-delay: 0.2s; }
.response-check:nth-child(2) { animation-delay: 0.4s; }
.response-check:nth-child(3) { animation-delay: 0.6s; }

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.5); }
    to   { opacity: 1; transform: scale(1); }
}

/* ===== Integrations Section ===== */
.integrations {
    background: var(--ink-50);
}

.integration-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.integration-category {
    background: var(--ink-0);
    border: 1px solid var(--ink-100);
    border-radius: 14px;
    padding: 1.5rem;
}

.category-title {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-500);
    margin-bottom: 1rem;
}

.integration-list {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.integration-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--ink-600);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.integration-item:hover { color: var(--ink-1000); }

.integration-item i {
    font-size: 1.125rem;
    color: var(--ink-400);
}

.integrations-cta {
    text-align: center;
    padding: 2rem;
    background: var(--ink-0);
    border: 1px solid var(--ink-100);
    border-radius: 14px;
}

.integrations-cta p {
    color: var(--ink-500);
    margin-bottom: 1rem;
}

/* ===== Stats Section ===== */
.stats {
    background: var(--ink-0);
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 2rem;
    background: var(--ink-50);
    border: 1px solid var(--ink-100);
    border-radius: 14px;
}

.stat-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-100);
    border-radius: 14px;
    font-size: 1.5rem;
    color: var(--ink-700);
    flex-shrink: 0;
}

.stat-content { flex: 1; }

.stat-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 500;
    letter-spacing: -0.035em;
    color: var(--ink-1000);
    margin-bottom: 2px;
}

.stat-text {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-400);
}

/* ===== Demo CTA Section ===== */
.demo-cta {
    background: var(--ink-50);
}

.demo-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 4rem;
    align-items: center;
}

.demo-content { max-width: 480px; }

.demo-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--signal-100);
    border: 1px solid var(--signal-300);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--signal-900);
    margin-bottom: 1.25rem;
}

.demo-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 500;
    letter-spacing: -0.015em;
    color: var(--ink-1000);
    margin-bottom: 0.75rem;
    text-wrap: balance;
}

.demo-description {
    font-size: 1rem;
    color: var(--ink-500);
    margin-bottom: 2rem;
    line-height: 1.55;
}

.demo-form {
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.875rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-input, select.form-input, textarea.form-input {
    padding: 12px 14px;
    background: var(--ink-0);
    border: 1px solid var(--ink-200);
    border-radius: 8px;
    color: var(--ink-1000);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-input:focus, select.form-input:focus, textarea.form-input:focus {
    outline: none;
    border-color: var(--ink-700);
}

.form-input::placeholder { color: var(--ink-400); }

select.form-input { cursor: pointer; }

textarea.form-input {
    resize: vertical;
    min-height: 96px;
}

.demo-alternative {
    text-align: center;
    padding: 1.25rem;
    background: var(--ink-0);
    border: 1px solid var(--ink-100);
    border-radius: 8px;
}

.demo-alternative p {
    color: var(--ink-400);
    font-size: 0.9375rem;
    margin-bottom: 0.875rem;
}

/* Demo Visual */
.demo-visual {
    position: relative;
    width: 380px;
    height: 380px;
}

.demo-card-stack {
    position: relative;
    width: 100%;
    height: 100%;
}

.demo-card {
    position: absolute;
    padding: 1.25rem;
    background: var(--ink-0);
    border: 1px solid var(--ink-100);
    border-radius: 14px;
    box-shadow: 0 6px 16px rgba(11,15,20,.08), 0 2px 4px rgba(11,15,20,.05);
    animation: float 6s ease-in-out infinite;
}

.demo-card-1 { top: 0;     left: 0;    width: 190px; z-index: 3; animation-delay: 0s; }
.demo-card-2 { top: 100px; right: 0;   width: 210px; z-index: 2; animation-delay: 2s; }
.demo-card-3 { bottom: 0;  left: 40px; width: 190px; z-index: 1; animation-delay: 4s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-12px); }
}

.card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0.875rem;
    color: var(--ink-500);
    font-size: 0.8125rem;
}

.card-header i {
    font-size: 1rem;
    color: var(--ink-400);
}

.card-metric {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 500;
    letter-spacing: -0.035em;
    color: var(--ink-1000);
}

.card-label {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-400);
    margin-top: 2px;
}

/* ===== Footer ===== */
.footer {
    background: var(--ink-1000);
    border-top: 1px solid var(--ink-700);
    padding: 4rem 64px 2rem;
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--ink-0);
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 1.25rem;
    color: var(--signal-500);
}

.footer-tagline {
    color: var(--ink-300);
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
    max-width: 280px;
    line-height: 1.55;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.footer-social a {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-800);
    border: 1px solid var(--ink-700);
    border-radius: 50%;
    color: var(--ink-400);
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

.footer-social a:hover {
    border-color: var(--ink-500);
    color: var(--ink-200);
}

.footer-social a i { font-size: 1.125rem; }

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.footer-title {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-400);
    margin-bottom: 1rem;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.footer-column a {
    color: var(--ink-300);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-column a:hover { color: var(--ink-0); }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--ink-700);
}

.footer-bottom p {
    color: var(--ink-400);
    font-size: 0.875rem;
}

.footer-badges {
    display: flex;
    gap: 10px;
}

.badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--ink-800);
    border: 1px solid var(--ink-700);
    border-radius: 8px;
    font-size: 0.8125rem;
    color: var(--ink-300);
}

.badge i { color: var(--ok); }

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    section, .hero, .trusted-by, .footer {
        padding-left: 2rem;
        padding-right: 2rem;
    }

    .nav-container { padding: 0 2rem; }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-actions, .hero-stats { justify-content: center; }
    .stat { text-align: center; }
    .hero-description { margin-left: auto; margin-right: auto; }

    .hero-visual { height: 380px; }

    .demo-container { grid-template-columns: 1fr; }
    .demo-visual { display: none; }

    .step {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .step:nth-child(even) { direction: ltr; }

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

@media (max-width: 768px) {
    .nav-links, .nav-actions { display: none; }
    .nav-toggle { display: block; }

    .hero { padding-top: 6rem; padding-bottom: 3rem; }

    .hero-title { font-size: 2rem; }
    .hero-description { font-size: 1rem; }

    .hero-actions { flex-direction: column; width: 100%; }
    .hero-actions .btn { width: 100%; justify-content: center; }

    .hero-stats { flex-direction: column; gap: 1.5rem; align-items: center; }

    .hero-visual { height: 280px; }

    .features-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }

    .trusted-logos { flex-direction: column; gap: 1.25rem; align-items: center; }
    .integration-categories { grid-template-columns: 1fr; }
    .stats-container { grid-template-columns: 1fr; }

    .footer-links { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
    .footer-badges { flex-direction: column; }
}

@media (max-width: 480px) {
    section { padding: 4.5rem 1rem; }
    .hero { padding-left: 1rem; padding-right: 1rem; }
    .trusted-by, .footer { padding-left: 1rem; padding-right: 1rem; }

    .section-title { font-size: 1.625rem; }
    .feature-card { padding: 1.25rem; }
    .stat-card { padding: 1.25rem; }
}