/* Nostr Guestbook. Dark first, like most Nostr apps; light when the system asks for it. */
:root {
    --bg: #0d0a14;
    --bg-glow-1: rgba(142, 48, 235, .28);
    --bg-glow-2: rgba(209, 79, 224, .16);
    --card: rgba(255, 255, 255, .045);
    --card-border: rgba(255, 255, 255, .09);
    --text: #eeeaf5;
    --muted: #a39cb3;
    --accent: #a45cff;
    --accent-2: #d14fe0;
    --accent-text: #fff;
    --ok: #5ee0a0;
    --error: #ff8a8a;
    --code: rgba(255, 255, 255, .07);
    --shadow: 0 10px 30px rgba(0, 0, 0, .35);
}
@media (prefers-color-scheme: light) {
    :root {
        --bg: #f7f5fb;
        --bg-glow-1: rgba(142, 48, 235, .14);
        --bg-glow-2: rgba(209, 79, 224, .10);
        --card: #fff;
        --card-border: #e6e1ef;
        --text: #1c1726;
        --muted: #6c6479;
        --accent: #8e30eb;
        --accent-2: #c23ed4;
        --ok: #138a55;
        --error: #b3261e;
        --code: #f0ecf7;
        --shadow: 0 8px 24px rgba(60, 20, 110, .08);
    }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--text);
    font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background:
        radial-gradient(900px 500px at 85% -10%, var(--bg-glow-1), transparent 60%),
        radial-gradient(700px 400px at -10% 30%, var(--bg-glow-2), transparent 60%),
        var(--bg);
    background-attachment: fixed;
    min-height: 100vh;
}
a { color: var(--accent); }
code { font: .85em ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--code); padding: .1em .35em; border-radius: 5px; }
h1, h2 { line-height: 1.2; }
.wrap { max-width: 72rem; margin: 0 auto; padding: 0 1rem; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.error { color: var(--error); }
.notice { color: var(--ok); }
.spacer { flex: 1; }
[hidden] { display: none !important; }

/* Buttons */
.btn {
    display: inline-block; border: 0; cursor: pointer; text-decoration: none;
    font: inherit; font-weight: 600; color: var(--accent-text);
    padding: .65rem 1.2rem; border-radius: 999px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 6px 20px rgba(164, 92, 255, .35);
    transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 26px rgba(164, 92, 255, .5); }
.btn-small { padding: .4rem .9rem; font-size: .9rem; }
.btn-ghost { background: transparent; color: var(--text); box-shadow: none; border: 1px solid var(--card-border); }
.btn-ghost:hover { box-shadow: none; border-color: var(--error); color: var(--error); }
.link { background: none; border: 0; padding: 0; font: inherit; color: var(--muted); cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.link:hover { color: var(--text); }

/* Header */
.topbar { position: sticky; top: 0; z-index: 10; backdrop-filter: blur(12px); background: color-mix(in srgb, var(--bg) 70%, transparent); border-bottom: 1px solid var(--card-border); }
.topbar-inner { display: flex; align-items: center; gap: 1rem; min-height: 60px; }
.brand { display: flex; align-items: center; gap: .6rem; color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: .01em; margin-right: auto; }
.logo { width: 30px; height: 30px; }
.topbar-nav { display: flex; align-items: center; gap: 1rem; }
.topbar-nav form { margin: 0; }
.me-chip { display: flex; align-items: center; gap: .5rem; color: var(--text); text-decoration: none; max-width: 14rem; }
.me-chip .author-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Avatars: generated gradient underneath, picture on top when there is one. */
.avatar { display: inline-block; flex: none; border-radius: 50%; overflow: hidden; position: relative; box-shadow: 0 0 0 2px rgba(255, 255, 255, .08); }
.avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* Hero */
.hero { position: relative; padding: 4.5rem 0 3rem; max-width: 40rem; }
.hero-graph { position: absolute; right: -28rem; top: 2rem; width: 26rem; opacity: .9; }
@media (max-width: 70rem) { .hero-graph { display: none; } }
.hero-graph .edges line { stroke: var(--accent); stroke-opacity: .35; stroke-width: 1.5; }
.hero-graph .nodes circle { fill: var(--accent); }
.hero-graph .nodes .key { fill: var(--accent-2); }
.hero-graph .pulse { animation: pulse 2.8s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.hero-graph .pulse.delay { animation-delay: 1.4s; }
@keyframes pulse { 50% { transform: scale(1.45); opacity: .55; } }
@media (prefers-reduced-motion: reduce) { .hero-graph .pulse { animation: none; } }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; color: var(--accent); font-weight: 700; margin: 0 0 .75rem; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); margin: 0 0 1rem; }
.grad { background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 1.15rem; color: var(--muted); margin: 0 0 1.75rem; }
.chips { list-style: none; padding: 0; margin: 1.75rem 0 0; display: flex; flex-wrap: wrap; gap: .5rem; }
.chips li { border: 1px solid var(--card-border); background: var(--card); border-radius: 999px; padding: .3rem .8rem; font-size: .85rem; color: var(--muted); }

/* Cards */
.card { background: var(--card); border: 1px solid var(--card-border); border-radius: 18px; box-shadow: var(--shadow); }
.me-card { margin: 2rem 0 1rem; padding: 1.5rem; scroll-margin-top: 80px; }
.me-head { display: flex; gap: 1rem; align-items: center; }
.me-id h1 { font-size: 1.6rem; margin: 0; overflow-wrap: anywhere; }
.me-id p { margin: .15rem 0 0; }
.nip05 { color: var(--ok); }

/* Profile loading panel */
.profile-panel { margin: 1.25rem 0; padding: 1rem 1.1rem; border-radius: 14px; background: var(--code); }
.profile-panel-head { display: flex; align-items: center; gap: .6rem; }
.profile-panel-head .refresh { margin: 0 0 0 auto; }
.profile-panel p { margin: .4rem 0 0; }
.spinner { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--card-border); border-top-color: var(--accent); animation: spin .8s linear infinite; }
.profile-panel[data-done="true"] .spinner { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.steps { list-style: none; padding: 0; margin: .6rem 0 0; display: grid; gap: .25rem; font-size: .88rem; }
.steps li { display: flex; gap: .5rem; align-items: baseline; }
.steps .icon { width: 1.1rem; text-align: center; flex: none; }
.steps .src { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .82rem; }
.steps .Found .icon { color: var(--ok); }
.steps .Failed .icon { color: var(--error); }
.steps .NotFound .icon, .steps .Started .icon { color: var(--muted); }

/* Editor */
.editor label { display: block; font-weight: 600; margin-bottom: .4rem; }
.editor textarea {
    width: 100%; resize: vertical; min-height: 5.5rem; font: inherit; color: var(--text);
    background: var(--code); border: 1px solid var(--card-border); border-radius: 12px; padding: .75rem .9rem;
}
.editor textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.editor-foot { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; margin-top: .6rem; }

/* Wall */
.wall { margin: 2.5rem 0 3rem; }
.wall-head { display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.wall-head h2 { margin: 0; font-size: 1.5rem; }
.empty { color: var(--muted); padding: 2rem; text-align: center; border: 1px dashed var(--card-border); border-radius: 18px; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr)); }
.msg { background: var(--card); border: 1px solid var(--card-border); border-radius: 16px; padding: 1rem 1.1rem; display: flex; flex-direction: column; gap: .6rem; }
.msg.mine { border-color: color-mix(in srgb, var(--accent) 60%, transparent); box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 35%, transparent), var(--shadow); }
.msg header { display: flex; align-items: center; gap: .7rem; min-width: 0; }
.msg .who { display: flex; flex-direction: column; min-width: 0; }
.msg .author-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg .text { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; flex: 1; }

.footer { border-top: 1px solid var(--card-border); padding: 1.5rem 1rem 2.5rem; color: var(--muted); font-size: .88rem; }