/*
    ch-swap — landing
    Reusa los tokens del porfolio de Abstract Raven para mantener la continuidad visual.
    --purple #BB9AF7 (acento principal) · --green #9ECE6A · --blue #7DCFFF
*/

:root {
    --purple: #BB9AF7;
    --green:  #9ECE6A;
    --blue:   #7DCFFF;

    --bg:        #1C181B;
    --surface:   #241F25;
    --surface-2: #2B252D;

    --text:   #ECE9F0;
    --muted:  #8E8895;
    --border: rgba(187, 154, 247, 0.16);

    --font-display: "Space Grotesk", system-ui, sans-serif;
    --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

    --max: 1080px;
    --radius: 14px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
strong { color: var(--text); font-weight: 600; }

.container {
    width: 100%;
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 24px;
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--purple);
    margin-bottom: 12px;
}

/* Header / Nav */
header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(28, 24, 27, 0.82);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

nav {
    max-width: var(--max);
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
    color: var(--text);
}
.logo span { color: var(--purple); }

.nav-links {
    display: flex;
    gap: 28px;
    list-style: none;
    margin-left: auto;
}
.nav-links a {
    color: var(--muted);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.18s ease;
}
.nav-links a:hover { color: var(--text); }

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 6px;
}
.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

/* Buttons */
.btn {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 12px 22px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: transform 0.15s ease, background 0.18s ease, border-color 0.18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--purple); color: var(--bg); }
.btn-primary:hover { background: #cbb1ff; }
.btn-secondary { border: 1px solid var(--border); color: var(--text); }
.btn-secondary:hover { border-color: var(--purple); }
.btn-small { padding: 9px 16px; font-size: 0.88rem; }
.btn-large { padding: 15px 30px; font-size: 1rem; margin-top: 28px; }

/* Sections */
section { padding: 104px 0; }

h1 {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 6vw, 3.6rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
}
h1 span { color: var(--purple); }

h2 {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 4vw, 2.3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 28px;
}

/* Hero */
#hero {
    padding-top: 72px;
    min-height: 84vh;
    display: flex;
    align-items: center;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 56px;
    align-items: center;
}
.lead {
    color: var(--muted);
    font-size: 1.15rem;
    margin-top: 20px;
    max-width: 48ch;
}
.hero-btns {
    margin-top: 34px;
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

/* Hero signature: two swap cards with an arrow */
.hero-aside {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
}
.swap-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 24px;
}
.swap-card:nth-child(1) { border-left: 3px solid var(--blue); }
.swap-card:nth-child(3) { border-left: 3px solid var(--green); }
.swap-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    color: var(--muted);
    text-transform: uppercase;
    margin-bottom: 8px;
}
.swap-city {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.swap-meta {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--muted);
    margin-top: 4px;
}
.swap-arrow {
    align-self: center;
    font-size: 1.5rem;
    color: var(--purple);
    line-height: 1;
}

/* How it works */
.steps {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    counter-reset: none;
}
.step {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 24px;
}
.step-num {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--purple);
    letter-spacing: 0.1em;
}
.step h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin: 12px 0 8px;
}
.step p { color: var(--muted); font-size: 0.94rem; }

/* Trust */
.trust-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}
.trust-lead { color: var(--muted); font-size: 1.05rem; max-width: 50ch; }
.trust-points { list-style: none; display: flex; flex-direction: column; gap: 18px; }
.trust-points li {
    color: var(--muted);
    padding-left: 22px;
    position: relative;
}
.trust-points li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--green);
}

/* Contact */
.contact-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 56px 40px;
    text-align: center;
}
.contact-lead { color: var(--muted); font-size: 1.1rem; max-width: 52ch; margin: 0 auto; }

/* Footer */
footer {
    border-top: 1px solid var(--border);
    padding: 32px 24px;
    text-align: center;
}
footer p { color: var(--muted); font-size: 0.85rem; }
.footer-by { margin-top: 6px; }
.footer-by a { color: var(--muted); transition: color 0.18s ease; }
.footer-by a:hover { color: var(--purple); }

/* Accesibilidad */
:focus-visible {
    outline: 2px solid var(--purple);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Reveal al hacer scroll (el estado oculto solo lo pone el JS) */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 820px) {
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-aside { order: -1; }
    .steps { grid-template-columns: 1fr; }
    .trust-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 640px) {
    .mobile-menu-toggle { display: flex; }
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    .nav-links.open { max-height: 280px; }
    .nav-links li { width: 100%; }
    .nav-links a { display: block; padding: 15px 24px; border-top: 1px solid var(--border); }
    .mobile-menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .mobile-menu-toggle.open span:nth-child(2) { opacity: 0; }
    .mobile-menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    section { padding: 72px 0; }
    .contact-box { padding: 40px 24px; }
}

/* Sin animaciones si el sistema lo pide */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { transition: none !important; animation: none !important; }
    .reveal { opacity: 1 !important; transform: none !important; }
}