/* ── Variables ── */
:root {
    --navy:  #0F172A;
    --slate: #1E293B;
    --cyan:  #06B6D4;
    --cyan-dark: #0891B2;
    --light: #F8FAFC;
    --text-muted: #94A3B8;
    --text-body:  #475569;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--light);
    color: var(--text-body);
    line-height: 1.6;
}

/* ── Nav ── */
.landing-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
}

.landing-nav__brand {
    font-size: 1.4rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    color: #fff;
}

/* ── Hero ── */
.hero {
    background: var(--navy);
    padding: 160px 2rem 120px;
    clip-path: ellipse(120% 100% at 50% 0%);
    text-align: center;
    color: #fff;
}

.hero__inner {
    max-width: 720px;
    margin: 0 auto;
}

.pill {
    display: inline-block;
    background: rgba(6, 182, 212, 0.15);
    color: var(--cyan);
    border: 1px solid rgba(6, 182, 212, 0.35);
    border-radius: 999px;
    padding: 0.35rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: clamp(2.2rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.25rem;
    color: #fff;
}

.accent { color: var(--cyan); }

.hero__sub {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 540px;
    margin: 0 auto 2.5rem;
    font-weight: 300;
}

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

/* ── Buttons ── */
.btn-cyan {
    display: inline-block;
    background: var(--cyan);
    color: #fff;
    font-weight: 700;
    padding: 0.65rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    transition: background 0.2s;
    font-size: 0.95rem;
}
.btn-cyan:hover { background: var(--cyan-dark); color: #fff; }
.btn-cyan--lg { padding: 0.85rem 2.2rem; font-size: 1.05rem; border-radius: 10px; }

.btn-ghost {
    display: inline-block;
    border: 2px solid rgba(255,255,255,0.25);
    color: rgba(255,255,255,0.8);
    font-weight: 600;
    padding: 0.65rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    transition: border-color 0.2s, color 0.2s;
    font-size: 0.95rem;
}
.btn-ghost:hover { border-color: rgba(255,255,255,0.6); color: #fff; }

/* ── Features ── */
.features {
    padding: 100px 2rem;
    background: var(--light);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.feature-card {
    background: #fff;
    border-radius: 28px;
    padding: 2.5rem 2rem;
    box-shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.12);
    transition: transform 0.25s, box-shadow 0.25s;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 28px 60px -12px rgba(0, 0, 0, 0.18);
}

.feature-card__icon {
    width: 52px;
    height: 52px;
    background: rgba(6, 182, 212, 0.12);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 1.25rem;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 0.75rem;
}

.feature-card p {
    font-size: 0.92rem;
    color: var(--text-body);
    line-height: 1.65;
}

/* ── CTA section ── */
.cta-section {
    background: var(--navy);
    padding: 100px 2rem;
    text-align: center;
    color: #fff;
}

.cta-section__inner {
    max-width: 600px;
    margin: 0 auto;
}

.cta-section h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.cta-section p {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 1rem;
}

/* ── Footer ── */
.landing-footer {
    background: var(--slate);
    color: var(--text-muted);
    padding: 3rem 2rem;
    text-align: center;
}

.landing-footer__inner {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    align-items: center;
}

.landing-footer a {
    color: var(--cyan);
    text-decoration: none;
}
.landing-footer a:hover { text-decoration: underline; }

.footer-contact { font-size: 0.9rem; }
.footer-copy { font-size: 0.8rem; color: #475569; }

/* ── Responsive ── */
@media (max-width: 600px) {
    .landing-nav { padding: 1rem; }
    .hero { padding: 130px 1.25rem 80px; }
    .features { padding: 60px 1.25rem; }
    .cta-section { padding: 70px 1.25rem; }
}