/* koffy.ai Landing Page — Dark Theme */
:root {
    --bg: #0a0a0f;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a25;
    --border: #1e1e2e;
    --text: #e4e4e7;
    --text-muted: #8b8b9e;
    --accent: #c87533;
    --accent-light: #e8924a;
    --accent-glow: rgba(200, 117, 51, 0.15);
    --gradient: linear-gradient(135deg, #c87533, #e8924a, #f5b041);
    --white: #ffffff;
    --success: #22c55e;
    --radius: 12px;
    --radius-lg: 20px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', -apple-system, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.02em; }
a { color: var(--accent-light); text-decoration: none; }

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

/* NAV */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(10,10,15,0.85); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 16px 24px; display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.4rem; font-weight: 800; color: var(--white); }
.logo span { color: var(--accent-light); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { color: var(--text-muted); font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--white); }
.btn-nav { background: var(--accent); color: var(--white) !important; padding: 8px 20px; border-radius: 8px; font-weight: 600; }
.btn-nav:hover { background: var(--accent-light); }

/* HERO */
.hero { min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 120px 24px 80px; background: radial-gradient(ellipse at top, rgba(200,117,51,0.08), transparent 60%); }
.hero-content { max-width: 800px; }
.hero-badge { display: inline-block; background: var(--accent-glow); border: 1px solid rgba(200,117,51,0.3); color: var(--accent-light); padding: 6px 16px; border-radius: 50px; font-size: 0.85rem; font-weight: 500; margin-bottom: 24px; }
.hero h1 { font-size: 4rem; line-height: 1.1; margin-bottom: 24px; color: var(--white); }
.hero-sub { font-size: 1.2rem; color: var(--text-muted); max-width: 600px; margin: 0 auto 40px; line-height: 1.7; }
.hero-cta { display: flex; gap: 16px; justify-content: center; margin-bottom: 60px; }
.btn-primary { background: var(--gradient); color: var(--white); padding: 14px 32px; border-radius: 10px; font-weight: 700; font-size: 1rem; border: none; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s; display: inline-block; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(200,117,51,0.3); }
.btn-secondary { background: transparent; border: 1px solid var(--border); color: var(--text); padding: 14px 32px; border-radius: 10px; font-weight: 600; font-size: 1rem; transition: border-color 0.2s; display: inline-block; }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent-light); }
.hero-stats { display: flex; justify-content: center; gap: 60px; }
.stat { display: flex; flex-direction: column; align-items: center; }
.stat-num { font-size: 2rem; font-weight: 800; color: var(--accent-light); }
.stat-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

/* PROBLEM */
.problem-section { padding: 100px 0; }
.problem-section h2 { text-align: center; font-size: 2.2rem; color: var(--white); margin-bottom: 60px; }
.problem-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; }
.problem-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; transition: border-color 0.3s; }
.problem-card:hover { border-color: var(--accent); }
.problem-icon { font-size: 2.5rem; margin-bottom: 16px; }
.problem-card h3 { font-size: 1.1rem; color: var(--white); margin-bottom: 8px; }
.problem-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }

/* AGENTS */
.agents-section { padding: 100px 0; background: linear-gradient(180deg, transparent, rgba(200,117,51,0.03), transparent); }
.agents-section h2 { text-align: center; font-size: 2.5rem; color: var(--white); margin-bottom: 12px; }
.section-sub { text-align: center; color: var(--text-muted); font-size: 1.1rem; margin-bottom: 60px; }
.agents-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }
.agent-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; position: relative; transition: transform 0.3s, border-color 0.3s; }
.agent-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.agent-card.featured { border-color: var(--accent); background: linear-gradient(135deg, var(--bg-card), rgba(200,117,51,0.05)); }
.agent-badge { position: absolute; top: -12px; right: 20px; background: var(--gradient); color: var(--white); padding: 4px 14px; border-radius: 50px; font-size: 0.75rem; font-weight: 700; }
.agent-icon { font-size: 2.5rem; margin-bottom: 16px; }
.agent-card h3 { font-size: 1.3rem; color: var(--white); margin-bottom: 4px; }
.agent-role { color: var(--accent-light); font-size: 0.85rem; font-weight: 600; margin-bottom: 16px; }
.agent-card ul { list-style: none; }
.agent-card li { padding: 6px 0; font-size: 0.9rem; color: var(--text-muted); padding-left: 20px; position: relative; }
.agent-card li::before { content: "☕"; position: absolute; left: 0; font-size: 0.75rem; }

/* MARKET */
.market-section { padding: 100px 0; }
.market-section h2 { text-align: center; font-size: 2.5rem; color: var(--white); margin-bottom: 60px; }
.market-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.market-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; text-align: center; transition: border-color 0.3s; }
.market-card:hover { border-color: var(--accent); }
.market-num { display: block; font-size: 3rem; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 8px; }
.market-label { font-size: 0.95rem; color: var(--text-muted); line-height: 1.5; }

/* HOW IT WORKS */
.how-section { padding: 100px 0; background: linear-gradient(180deg, transparent, rgba(200,117,51,0.03), transparent); }
.how-section h2 { text-align: center; font-size: 2.5rem; color: var(--white); margin-bottom: 60px; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.step { text-align: center; }
.step-num { width: 60px; height: 60px; background: var(--gradient); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; font-weight: 800; color: var(--white); margin: 0 auto 20px; }
.step h3 { font-size: 1.2rem; color: var(--white); margin-bottom: 8px; }
.step p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }

/* CARRIERS */
.carriers-section { padding: 80px 0; }
.carriers-section h2 { text-align: center; font-size: 2rem; color: var(--white); margin-bottom: 12px; }
.carrier-logos { display: flex; flex-wrap: wrap; justify-content: center; gap: 24px; margin-top: 40px; }
.carrier { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 32px; font-weight: 600; color: var(--text-muted); font-size: 0.95rem; }

/* PRICING */
.pricing-section { padding: 100px 0; }
.pricing-section h2 { text-align: center; font-size: 2.5rem; color: var(--white); margin-bottom: 12px; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; margin-top: 40px; }
.price-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 36px 28px; position: relative; transition: transform 0.3s, border-color 0.3s; }
.price-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.price-card.featured { border: 2px solid var(--accent); background: linear-gradient(135deg, var(--bg-card), rgba(200,117,51,0.08)); }
.price-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--gradient); color: var(--white); padding: 4px 16px; border-radius: 50px; font-size: 0.75rem; font-weight: 700; white-space: nowrap; }
.price-card h3 { font-size: 1.2rem; color: var(--white); margin-bottom: 8px; }
.price { font-size: 3rem; font-weight: 800; color: var(--white); margin-bottom: 4px; }
.price span { font-size: 1rem; font-weight: 400; color: var(--text-muted); }
.price-desc { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 24px; }
.price-card ul { list-style: none; margin-bottom: 28px; }
.price-card li { padding: 8px 0; font-size: 0.9rem; color: var(--text-muted); border-bottom: 1px solid var(--border); }
.price-card li:last-child { border: none; }
.btn-price { display: block; text-align: center; padding: 12px; border: 1px solid var(--border); border-radius: 10px; color: var(--text); font-weight: 600; transition: all 0.2s; }
.btn-price:hover { border-color: var(--accent); color: var(--accent-light); }
.btn-featured { background: var(--gradient); border: none; color: var(--white) !important; }
.btn-featured:hover { box-shadow: 0 8px 30px rgba(200,117,51,0.3); }

/* CTA */
.cta-section { padding: 100px 0; text-align: center; background: radial-gradient(ellipse at center, rgba(200,117,51,0.08), transparent 60%); }
.cta-section h2 { font-size: 2.5rem; color: var(--white); margin-bottom: 16px; }
.cta-section > .container > p { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 40px; }
.cta-form { display: flex; gap: 12px; justify-content: center; max-width: 500px; margin: 0 auto; }
.cta-input { flex: 1; padding: 14px 20px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; color: var(--white); font-size: 1rem; outline: none; }
.cta-input:focus { border-color: var(--accent); }
.cta-note { margin-top: 16px; font-size: 0.8rem; color: var(--text-muted); }

/* FOOTER */
.footer { padding: 80px 0 40px; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo { font-size: 1.4rem; font-weight: 800; margin-bottom: 12px; }
.footer-brand p { color: var(--text-muted); font-size: 0.9rem; }
.footer-small { margin-top: 8px; font-size: 0.8rem; }
.footer-links h4 { color: var(--white); font-size: 0.9rem; margin-bottom: 16px; }
.footer-links a { display: block; color: var(--text-muted); font-size: 0.85rem; padding: 4px 0; }
.footer-links a:hover { color: var(--accent-light); }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid var(--border); }
.footer-bottom p { color: var(--text-muted); font-size: 0.8rem; }

/* RESPONSIVE */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .hero-stats { gap: 30px; }
    .steps-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .nav-links { display: none; }
    .hero-cta { flex-direction: column; align-items: center; }
    .cta-form { flex-direction: column; }
    .pricing-grid { grid-template-columns: 1fr; }
}