/* pyroclastic.cloud landing page. Load after fonts/fonts.css and tokens.css. */

/* ---- page ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--color-bg); color: var(--color-text); font-family: var(--font-body); font-size: var(--fs-base); line-height: var(--lh-body); -webkit-font-smoothing: antialiased; }
a { color: var(--color-link); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; border-radius: var(--radius-sm); }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: var(--lh-snug); margin: 0; letter-spacing: -0.015em; }
h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); line-height: var(--lh-tight); font-weight: 700; letter-spacing: -0.025em; }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-md); font-family: var(--font-body); font-weight: 600; }
p { margin: 0 0 var(--space-4); }
.lead { font-size: var(--fs-md); color: var(--color-text-2); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 var(--space-5); }

.mark { display: inline-block; vertical-align: middle; color: var(--color-text-2); --mark-ring: currentColor; --mark-vent: var(--volcano-accent); }
[data-volcano="vesuvius"] { --volcano-accent: var(--sky-primary); --volcano-accent-dark: var(--sky-primary-dark); }

header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding: var(--space-5) 0; }
.lockup { display: inline-flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--color-text); font-family: var(--font-display); font-weight: 500; font-size: var(--fs-md); }
.lockup .mark { width: 30px; height: 30px; } .lockup .tld { color: var(--color-text-2); }
nav { display: flex; gap: var(--space-5); align-items: center; font-size: var(--fs-sm); }
nav a { color: var(--color-text-2); text-decoration: none; } nav a:hover { color: var(--color-text); }
@media (max-width: 600px) { nav .hide-sm { display: none; } }

.btn { display: inline-flex; align-items: center; gap: 8px; font: 500 var(--fs-sm) var(--font-body); padding: 10px var(--space-4); border-radius: var(--radius-sm); border: 1px solid transparent; text-decoration: none; cursor: pointer; line-height: 1.3; transition: background var(--dur-quick) var(--ease-out), border-color var(--dur-quick) var(--ease-out); }
.btn-primary { background: var(--color-link); color: var(--color-on-primary); } .btn-primary:hover { filter: brightness(1.08); }
.btn-secondary { background: transparent; border-color: var(--color-link); color: var(--color-link); } .btn-secondary:hover { background: color-mix(in srgb, var(--color-link) 10%, transparent); }
nav .btn-secondary { color: var(--color-link); }
.actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-5); }
.invite-note { margin: var(--space-4) 0 0; font-size: var(--fs-sm); color: var(--color-text-muted); }

.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, 36%); gap: var(--space-8); align-items: center; padding: var(--space-8) 0 var(--space-9); }
.hero .kicker { font-family: var(--font-mono); font-size: var(--fs-sm); color: var(--color-text-muted); margin-bottom: var(--space-4); }
.hero h1 { margin-bottom: var(--space-4); }
.hero-mark { position: relative; aspect-ratio: 1; }
.hero-mark .mark { width: 100%; height: 100%; }
.hero-mark .big path { fill: none; stroke: var(--color-text-2); stroke-width: .9; stroke-linejoin: round; }
.hero-mark .big circle { fill: var(--volcano-accent); }
.hero-mark svg.pulse { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.hero-mark .cap { position: absolute; left: 0; right: 0; bottom: -32px; text-align: center; font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--color-text-muted); }
@media (prefers-reduced-motion: no-preference) { .hero-mark .ring { animation: vent-pulse 7s var(--ease-out) infinite; transform-origin: 25.8px 24.8px; } }
@keyframes vent-pulse { 0% { transform: scale(1); opacity: .7; } 60%, 100% { transform: scale(3.4); opacity: 0; } }
@media (max-width: 800px) { .hero { grid-template-columns: 1fr; gap: var(--space-8); padding: var(--space-7) 0 var(--space-8); } .hero-mark { max-width: 240px; margin: 0 auto; } }

section { padding: var(--space-8) 0; border-top: 1px solid var(--color-border); }
section h2 { margin-bottom: var(--space-3); }
.grid { display: grid; gap: var(--space-4); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 760px) { .g3 { grid-template-columns: 1fr; } }
.card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-5); box-shadow: var(--shadow-1); }
.card h3 { margin-bottom: var(--space-2); }
.card p { margin: 0; font-size: var(--fs-sm); color: var(--color-text-2); }


.handle { font-family: var(--font-mono); font-size: var(--fs-md); display: block; margin-bottom: var(--space-2); overflow-wrap: anywhere; }
.handle .at { color: var(--volcano-accent); } .handle .you { color: var(--color-text-muted); }

footer { padding: var(--space-7) 0 var(--space-8); border-top: 1px solid var(--color-border); color: var(--color-text-muted); font-size: var(--fs-sm); display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-6); justify-content: space-between; }
footer nav { gap: var(--space-2) var(--space-4); flex-wrap: wrap; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } }

/* ---- accent fix ----
   tokens.css swaps --volcano-accent to its dark value on :root, but
   body[data-volcano] sets it again on itself, so without these rules
   the Vesuvius accent stays light-mode blue on the dark background.
   Same rules as brand/examples/components.css. */
[data-theme="dark"] [data-volcano]:not([data-theme="light"], [data-theme="light"] *),
[data-theme="dark"][data-volcano] { --volcano-accent: var(--volcano-accent-dark); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) [data-volcano]:not([data-theme="light"], [data-theme="light"] *) { --volcano-accent: var(--volcano-accent-dark); }
}