/* Public landing page styles */
.nav-public {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(255,255,255,.95); backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--gray-200);
    padding: 0 40px; height: 64px;
    display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--gray-900); font-weight: 800; font-size: 18px; }
.nav-logo span { font-size: 22px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--gray-600); text-decoration: none; font-size: 14px; font-weight: 500; transition: color .15s; }
.nav-links a:hover { color: var(--primary); }

.hero {
    padding: 140px 40px 80px;
    background: linear-gradient(160deg, #EEF2FF 0%, #F5F3FF 50%, #FDF4FF 100%);
    text-align: center;
}
.hero h1 { font-size: 54px; font-weight: 900; color: var(--gray-900); line-height: 1.1; margin-bottom: 20px; letter-spacing: -1.5px; }
.hero h1 span { color: var(--primary); }
.hero p { font-size: 18px; color: var(--gray-500); max-width: 580px; margin: 0 auto 36px; line-height: 1.7; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.section { padding: 80px 40px; }
.section-center { text-align: center; }
.section-label { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: var(--primary); margin-bottom: 12px; }
.section h2 { font-size: 36px; font-weight: 800; color: var(--gray-900); margin-bottom: 16px; letter-spacing: -.5px; }
.section > p { font-size: 17px; color: var(--gray-500); max-width: 560px; margin: 0 auto 48px; line-height: 1.7; }

.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; max-width: 1100px; margin: 0 auto; }
.feature-card { background: #fff; border: 1px solid var(--gray-200); border-radius: 12px; padding: 28px; }
.feature-icon { font-size: 32px; margin-bottom: 14px; }
.feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--gray-500); line-height: 1.6; }

.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; max-width: 960px; margin: 0 auto; }
.pricing-card { background: #fff; border: 1px solid var(--gray-200); border-radius: 16px; padding: 32px; }
.pricing-card.featured { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(79,70,229,.1); }
.pricing-name { font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--gray-400); }
.pricing-price { font-size: 48px; font-weight: 900; color: var(--gray-900); margin: 8px 0; letter-spacing: -1px; }
.pricing-price span { font-size: 18px; font-weight: 500; color: var(--gray-400); }
.pricing-desc { font-size: 14px; color: var(--gray-500); margin-bottom: 24px; }
.pricing-features { list-style: none; margin-bottom: 28px; }
.pricing-features li { display: flex; align-items: center; gap: 10px; font-size: 14px; padding: 7px 0; color: var(--gray-600); }
.pricing-features li::before { content: '✓'; color: var(--success); font-weight: 700; }

footer { background: var(--gray-900); color: rgba(255,255,255,.5); padding: 40px; text-align: center; font-size: 14px; }

/* ─── Navigation ──────────────────────────────────────────── */
.landing-nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 200;
    background: rgba(255,255,255,.96); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    padding: 0 40px; height: 64px;
    display: flex; align-items: center;
}
.nav-container {
    width: 100%; max-width: 1200px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
}
.nav-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--gray-900); font-weight: 800; font-size: 18px; }
.nav-brand svg { flex-shrink: 0; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--gray-600); text-decoration: none; font-size: 14px; font-weight: 500; transition: color .15s; }
.nav-links a:hover { color: var(--primary); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--gray-600); border-radius: 2px; }

/* ─── Hero ─────────────────────────────────────────────────── */
.hero {
    padding: 120px 40px 80px;
    background: linear-gradient(160deg, #EEF2FF 0%, #F5F3FF 50%, #FDF4FF 100%);
    display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
    max-width: 1200px; margin: 0 auto;
}
.hero--small {
    padding: 100px 40px 60px;
    background: linear-gradient(160deg, #EEF2FF 0%, #F5F3FF 100%);
    text-align: center;
    display: block;
    max-width: none;
}
.hero-container { max-width: 540px; }
.hero--small .hero-container { max-width: 680px; margin: 0 auto; }
.hero-badge { display: inline-block; background: #EEF2FF; color: var(--primary); font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 20px; margin-bottom: 20px; letter-spacing: .03em; }
.hero-title { font-size: 50px; font-weight: 900; color: var(--gray-900); line-height: 1.1; margin: 0 0 20px; letter-spacing: -1.5px; }
.hero-subtitle { font-size: 17px; color: var(--gray-500); line-height: 1.7; margin: 0 0 32px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-social-proof { font-size: 13px; color: var(--gray-500); margin-top: 20px; }

/* ─── Widget mockup ────────────────────────────────────────── */
.hero-mockup { display: flex; justify-content: center; }
.mockup-browser { background: var(--gray-100); border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-lg); width: 340px; }
.mockup-bar { background: var(--gray-200); padding: 10px 14px; display: flex; gap: 6px; }
.mockup-bar span { width: 10px; height: 10px; border-radius: 50%; background: var(--gray-400); }
.mockup-screen { background: #fff; padding: 20px; }
.mockup-widget { border: 1px solid var(--gray-200); border-radius: 12px; overflow: hidden; }
.mockup-header { background: #4F46E5; padding: 12px 16px; display: flex; align-items: center; gap: 10px; }
.mockup-avatar { width: 32px; height: 32px; border-radius: 50%; background: rgba(255,255,255,.25); color: #fff; font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.mockup-name { color: #fff; font-size: 13px; font-weight: 600; }
.mockup-status { color: rgba(255,255,255,.7); font-size: 11px; }
.mockup-messages { padding: 12px; display: flex; flex-direction: column; gap: 8px; min-height: 100px; }
.mockup-msg { padding: 8px 12px; border-radius: 10px; font-size: 12px; max-width: 85%; line-height: 1.4; }
.mockup-msg.bot { background: var(--gray-100); color: var(--gray-700); align-self: flex-start; }
.mockup-msg.visitor { background: #4F46E5; color: #fff; align-self: flex-end; }
.mockup-input { border-top: 1px solid var(--gray-200); padding: 8px 12px; display: flex; align-items: center; justify-content: space-between; }
.mockup-input span { font-size: 12px; color: var(--gray-400); }
.mockup-input button { background: #4F46E5; color: #fff; border: none; border-radius: 6px; width: 24px; height: 24px; cursor: pointer; font-size: 10px; }

/* ─── Sections ─────────────────────────────────────────────── */
.section { padding: 80px 40px; }
.section-container { max-width: 1100px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 36px; font-weight: 800; color: var(--gray-900); margin: 0 0 12px; letter-spacing: -.5px; }
.section-header p { font-size: 17px; color: var(--gray-500); max-width: 560px; margin: 0 auto; line-height: 1.7; }

/* ─── Feature cards ────────────────────────────────────────── */
.features-section { background: var(--gray-50); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: #fff; border: 1px solid var(--gray-200); border-radius: 12px; padding: 28px; }
.feature-icon { font-size: 32px; margin-bottom: 14px; }
.feature-card h3 { font-size: 17px; font-weight: 700; margin: 0 0 8px; }
.feature-card p { font-size: 14px; color: var(--gray-500); line-height: 1.6; margin: 0; }

/* Feature detail (features page) */
.feature-detail-grid { display: flex; flex-direction: column; gap: 28px; max-width: 820px; margin: 0 auto; }
.feature-detail-card { display: flex; gap: 20px; align-items: flex-start; background: #fff; border: 1px solid var(--gray-200); border-radius: 12px; padding: 24px; }
.feature-detail-icon { width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 24px; flex-shrink: 0; }
.feature-detail-card h3 { margin: 0 0 8px; font-size: 17px; font-weight: 700; }
.feature-detail-card p { margin: 0; color: var(--gray-600); font-size: 14px; line-height: 1.6; }

/* ─── Steps ─────────────────────────────────────────────────── */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.step-card { text-align: center; padding: 24px; }
.step-number { width: 52px; height: 52px; border-radius: 50%; background: #4F46E5; color: #fff; font-size: 22px; font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.step-card h3 { font-size: 18px; font-weight: 700; margin: 0 0 10px; }
.step-card p { color: var(--gray-500); font-size: 14px; line-height: 1.6; margin: 0; }

/* ─── Pricing ───────────────────────────────────────────────── */
.pricing-section { background: var(--gray-50); }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 960px; margin: 0 auto; }
.pricing-card { background: #fff; border: 1px solid var(--gray-200); border-radius: 16px; padding: 32px; position: relative; }
.pricing-card--featured { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(79,70,229,.08); }
.pricing-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--primary); color: #fff; font-size: 11px; font-weight: 700; padding: 4px 14px; border-radius: 20px; white-space: nowrap; }
.pricing-name { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--gray-400); margin-bottom: 10px; }
.pricing-price { display: flex; align-items: baseline; gap: 3px; margin-bottom: 20px; }
.price-currency { font-size: 22px; font-weight: 700; color: var(--gray-500); }
.price-amount { font-size: 48px; font-weight: 900; color: var(--gray-900); line-height: 1; letter-spacing: -1px; }
.price-period { font-size: 15px; color: var(--gray-400); }
.pricing-features { list-style: none; padding: 0; margin: 0 0 28px; display: flex; flex-direction: column; gap: 8px; }
.pricing-features li { font-size: 14px; color: var(--gray-600); display: flex; align-items: center; gap: 8px; }
.pricing-features li::before { content: '✓'; color: var(--success); font-weight: 700; flex-shrink: 0; }

/* ─── CTA section ───────────────────────────────────────────── */
.cta-section { background: linear-gradient(135deg, #4F46E5, #7C3AED); text-align: center; }
.cta-section h2 { color: #fff; font-size: 32px; font-weight: 800; margin: 0 0 12px; }
.cta-section p { color: rgba(255,255,255,.8); font-size: 17px; margin: 0; }
.cta-section .btn-primary { background: #fff; color: #4F46E5; }
.cta-section .btn-primary:hover { background: #F5F3FF; }

/* ─── Footer ────────────────────────────────────────────────── */
.landing-footer { background: var(--gray-900); padding: 56px 40px 24px; }
.footer-container { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: 1fr 2fr; gap: 48px; margin-bottom: 40px; }
.footer-brand .nav-brand { color: #fff; margin-bottom: 12px; }
.footer-brand p { color: var(--gray-400); font-size: 14px; line-height: 1.6; margin: 0; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-links h4 { color: #fff; font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; margin: 0 0 14px; }
.footer-links a { display: block; color: var(--gray-400); font-size: 14px; text-decoration: none; margin-bottom: 8px; transition: color .15s; }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-top: 24px; text-align: center; }
.footer-bottom p { color: var(--gray-500); font-size: 13px; margin: 0; }

/* ─── Text utilities ─────────────────────────────────────────── */
.text-center { text-align: center; }

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid  { grid-template-columns: 1fr; max-width: 400px; }
    .steps-grid    { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
}

@media (max-width: 768px) {
    .landing-nav { padding: 0 20px; }
    .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: #fff; padding: 20px; border-bottom: 1px solid var(--gray-200); gap: 16px; }
    .nav-links.open { display: flex; }
    .nav-toggle { display: flex; }
    .hero { padding: 100px 20px 60px; grid-template-columns: 1fr; }
    .hero--small { padding: 100px 20px 50px; }
    .hero-title { font-size: 34px; }
    .hero-mockup { display: none; }
    .section { padding: 56px 20px; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-container { grid-template-columns: 1fr; gap: 32px; }
    .footer-links { grid-template-columns: 1fr 1fr; }
}