/* Robuild website: one stylesheet for every page. */
:root {
  --bg: #09090b;
  --panel: #111113;
  --panel-2: #18181b;
  --line: #222226;
  --line-2: #2e2e34;
  --text: #f4f4f5;
  --text-2: #a1a1aa;
  --text-3: #71717a;
  --accent: #19c39a;
  --accent-soft: rgb(25 195 154 / 0.12);
  --accent-line: rgb(25 195 154 / 0.35);
  --danger: #f87171;
  --warn: #fbbf24;
  --radius: 14px;
  --mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  --nav-h: 64px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.6 Inter, "Segoe UI", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; line-height: 1.15; letter-spacing: -0.025em; font-weight: 650; }
p { margin: 0; }
code, .mono { font-family: var(--mono); font-size: 0.88em; }
[hidden] { display: none !important; }
.muted { color: var(--text-2); }
.faint { color: var(--text-3); }
.wrap { width: min(1120px, 100% - 32px); margin: 0 auto; }

/* ---------- buttons, inputs, badges ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 40px; padding: 0 18px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent; color: var(--text); font: 600 14px/1 inherit; font-family: inherit; cursor: pointer; white-space: nowrap; transition: background 0.15s, border-color 0.15s, opacity 0.15s; }
.btn:hover { background: var(--panel-2); }
.btn.primary { background: var(--text); color: #0a0a0b; border-color: var(--text); }
.btn.primary:hover { background: #d4d4d8; }
.btn.accent { background: var(--accent); color: #052e24; border-color: var(--accent); }
.btn.lg { height: 48px; padding: 0 24px; font-size: 15px; }
.btn.sm { height: 32px; padding: 0 12px; font-size: 13px; }
.btn.danger { color: var(--danger); border-color: rgb(248 113 113 / 0.35); }
.btn.danger:hover { background: rgb(248 113 113 / 0.08); }
.btn:disabled, .btn.disabled { opacity: 0.4; cursor: default; pointer-events: none; }
.btn.on { border-color: var(--accent-line); color: var(--accent); }
.link { background: none; border: 0; padding: 0; color: var(--text-2); font: inherit; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line-2); }
.link:hover { color: var(--text); }

input, select { height: 42px; width: 100%; padding: 0 14px; border-radius: 10px; border: 1px solid var(--line-2); background: var(--panel); color: var(--text); font: 14px inherit; font-family: inherit; outline: none; transition: border-color 0.15s; }
input:focus, select:focus { border-color: var(--text-3); }
input.code { font-family: var(--mono); letter-spacing: 0.06em; text-transform: uppercase; }
label.field { display: grid; gap: 6px; font-size: 13px; color: var(--text-2); }

.badge { display: inline-flex; align-items: center; gap: 5px; height: 22px; padding: 0 9px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--panel-2); color: var(--text-2); border: 1px solid var(--line); white-space: nowrap; }
.badge.ok { background: var(--accent-soft); color: var(--accent); border-color: var(--accent-line); }
.badge.warn { background: rgb(251 191 36 / 0.1); color: var(--warn); border-color: rgb(251 191 36 / 0.3); }
.badge.off { opacity: 0.6; }
.avatar { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; display: inline-grid; place-items: center; background: var(--panel-2); border: 1px solid var(--line-2); color: var(--text); font-weight: 650; flex: none; }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 20; height: var(--nav-h); border-bottom: 1px solid var(--line); background: rgb(9 9 11 / 0.82); backdrop-filter: blur(12px); }
.nav .wrap { height: 100%; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: -0.01em; }
.brand img { width: 28px; height: 28px; }
.nav-links { display: flex; gap: 24px; color: var(--text-2); font-size: 14px; }
.nav-links a:hover { color: var(--text); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.nav-user { display: flex; align-items: center; gap: 8px; color: var(--text-2); font-size: 14px; }
.nav-user:hover { color: var(--text); }
.nav-user .avatar { width: 28px; height: 28px; font-size: 13px; }

/* ---------- landing ---------- */
.hero { text-align: center; padding: 96px 0 56px; background: radial-gradient(900px 420px at 50% -60px, rgb(25 195 154 / 0.14), transparent 70%); }
.eyebrow { display: inline-flex; gap: 8px; align-items: center; height: 30px; padding: 0 12px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--text-2); font-size: 13px; margin-bottom: 24px; }
.eyebrow b { color: var(--accent); font-weight: 600; }
.hero h1 { font-size: clamp(40px, 6.4vw, 72px); max-width: 860px; margin: 0 auto; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lead { color: var(--text-2); font-size: 18px; max-width: 600px; margin: 22px auto 32px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero .fine { color: var(--text-3); font-size: 13px; margin-top: 16px; }

.window { width: min(1040px, 100% - 32px); margin: 56px auto 0; border: 1px solid var(--line-2); border-radius: 18px; background: var(--panel); overflow: hidden; box-shadow: 0 40px 120px rgb(0 0 0 / 0.6); text-align: left; }
.window-bar { display: flex; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.window-bar i { width: 11px; height: 11px; border-radius: 50%; background: var(--line-2); }
.window-body { display: grid; grid-template-columns: 230px 1fr; min-height: 380px; }
.w-side { border-right: 1px solid var(--line); padding: 14px; font-size: 13px; }
.w-side .w-new { border: 1px solid var(--line-2); border-radius: 9px; padding: 8px 10px; margin-bottom: 14px; font-weight: 600; }
.w-side .w-group { color: var(--text-3); font-size: 12px; margin: 10px 4px 6px; }
.w-side .w-chat { padding: 7px 10px; border-radius: 8px; color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.w-side .w-chat.on { background: var(--panel-2); color: var(--text); }
.w-main { padding: 22px 28px; font-size: 14px; display: flex; flex-direction: column; gap: 4px; }
.w-user { align-self: flex-end; background: var(--panel-2); border: 1px solid var(--line-2); border-radius: 14px 14px 4px 14px; padding: 9px 13px; margin-bottom: 10px; max-width: 80%; }
.w-row { display: grid; grid-template-columns: 18px auto 1fr auto; gap: 10px; align-items: center; padding: 5px 2px; color: var(--text-2); }
.w-row b { color: var(--text); font-weight: 600; }
.w-row code { color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.w-row em { font: normal 12px var(--mono); color: var(--text-3); }
.w-row .ic { width: 12px; height: 12px; border: 1.6px solid var(--text-3); border-radius: 50%; }
.w-row .ic.ok { border-color: var(--accent); }
.w-ai { margin: 12px 0 6px; line-height: 1.6; }
.w-foot { color: var(--text-3); font-size: 12.5px; }

.strip { text-align: center; padding: 64px 0 24px; color: var(--text-2); }
.strip-items { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 36px; margin-top: 18px; color: var(--text); font-weight: 600; font-size: 17px; }
.strip-items span { opacity: 0.85; }

section.block { padding: 88px 0 0; }
.block-head { text-align: center; max-width: 640px; margin: 0 auto 40px; }
.block-head h2 { font-size: clamp(30px, 4vw, 42px); }
.block-head p { color: var(--text-2); margin-top: 12px; font-size: 16px; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.feature { background: var(--bg); padding: 28px; }
.feature h3 { font-size: 17px; margin-bottom: 8px; }
.feature p { color: var(--text-2); font-size: 14.5px; }
.feature .num { color: var(--accent); font: 600 12px var(--mono); margin-bottom: 14px; display: block; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step { border: 1px solid var(--line); border-radius: 16px; padding: 24px; }
.step b { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--panel-2); border: 1px solid var(--line-2); font-size: 13px; margin-bottom: 16px; }
.step h3 { font-size: 16px; margin-bottom: 6px; }
.step p { color: var(--text-2); font-size: 14.5px; }

.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.plan { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 18px; padding: 24px; background: var(--panel); }
.plan.featured { border-color: var(--accent-line); box-shadow: inset 0 1px 0 var(--accent-line); }
.plan-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.plan h3 { font-size: 18px; }
.plan .desc { color: var(--text-2); font-size: 14px; margin-top: 6px; min-height: 44px; }
.price { font-size: 38px; font-weight: 700; letter-spacing: -0.03em; margin: 20px 0 4px; }
.price small { font-size: 14px; font-weight: 400; color: var(--text-2); letter-spacing: 0; }
.price.tba { font-size: 16px; font-weight: 600; color: var(--text-2); letter-spacing: 0; margin: 30px 0 14px; }
.plan ul { list-style: none; margin: 18px 0 24px; padding: 18px 0 0; border-top: 1px solid var(--line); display: grid; gap: 9px; flex: 1; }
.plan li { padding-left: 22px; position: relative; color: var(--text-2); font-size: 14px; }
.plan li::before { content: ""; position: absolute; left: 2px; top: 8px; width: 8px; height: 5px; border-left: 1.6px solid var(--accent); border-bottom: 1.6px solid var(--accent); transform: rotate(-45deg); }

.faq { max-width: 760px; margin: 0 auto; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 4px; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::after { content: "+"; color: var(--text-3); font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--text-2); margin-top: 10px; }

.download { text-align: center; margin: 96px auto 0; padding: 56px 24px; border: 1px solid var(--line); border-radius: 22px; background: radial-gradient(600px 260px at 50% 0, rgb(25 195 154 / 0.1), transparent 70%), var(--panel); max-width: 820px; }
.download img { width: 72px; height: 72px; }
.download h2 { font-size: 32px; margin: 18px 0 10px; }
.download .muted { max-width: 480px; margin: 0 auto 26px; }
.redeem-row { display: flex; gap: 10px; max-width: 460px; margin: 0 auto; }

footer.foot { margin-top: 96px; border-top: 1px solid var(--line); padding: 32px 0 48px; color: var(--text-3); font-size: 13px; }
footer.foot .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; align-items: center; }
footer.foot .brand { font-size: 15px; color: var(--text); }
footer.foot .brand img { width: 22px; height: 22px; }
footer.foot a:hover { color: var(--text); }
footer.foot .legal { flex-basis: 100%; }

/* ---------- dialog ---------- */
dialog.modal { border: 1px solid var(--line-2); background: var(--panel); color: var(--text); border-radius: 20px; padding: 0; width: min(420px, calc(100% - 32px)); }
dialog.modal::backdrop { background: rgb(0 0 0 / 0.65); backdrop-filter: blur(4px); }
.modal-in { padding: 30px 28px 24px; display: grid; gap: 14px; }
.modal-in > img { width: 44px; height: 44px; margin: 0 auto; }
.modal h2 { font-size: 22px; text-align: center; }
.modal .sub { color: var(--text-2); text-align: center; font-size: 14px; margin-top: -6px; }
.modal-x { position: absolute; top: 12px; right: 14px; width: 32px; height: 32px; border-radius: 50%; border: 0; background: none; color: var(--text-3); font-size: 20px; cursor: pointer; }
.modal-x:hover { background: var(--panel-2); color: var(--text); }
.tabs { display: grid; grid-template-columns: 1fr 1fr; background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.tabs button { height: 34px; border: 0; border-radius: 999px; background: none; color: var(--text-2); font: 600 13.5px inherit; font-family: inherit; cursor: pointer; }
.tabs button.on { background: var(--panel-2); color: var(--text); }
.gsi { display: flex; justify-content: center; min-height: 44px; color-scheme: light; }
.or { display: flex; align-items: center; gap: 12px; color: var(--text-3); font-size: 12px; }
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.form { display: grid; gap: 10px; }
.form .row-between { display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
.note { color: var(--text-3); font-size: 12.5px; text-align: center; }
.error-text { color: var(--danger); font-size: 13px; }

#toasts { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 60; display: grid; gap: 8px; justify-items: center; }
.toast { background: var(--panel-2); border: 1px solid var(--line-2); border-radius: 12px; padding: 11px 16px; font-size: 14px; box-shadow: 0 12px 40px rgb(0 0 0 / 0.5); max-width: min(440px, calc(100vw - 32px)); }
.toast.error { border-color: rgb(248 113 113 / 0.5); }

/* ---------- account / admin shell: fixed sidebar, only the content scrolls ---------- */
.shell { display: grid; grid-template-columns: 260px 1fr; height: calc(100vh - var(--nav-h)); }
.side { border-right: 1px solid var(--line); padding: 24px 16px; display: flex; flex-direction: column; gap: 4px; overflow-y: auto; }
.side-me { display: flex; align-items: center; gap: 12px; padding: 4px 10px 20px; margin-bottom: 8px; border-bottom: 1px solid var(--line); }
.side-me .avatar { width: 40px; height: 40px; }
.side-me div { min-width: 0; }
.side-me b { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 14px; }
.side-me span { color: var(--text-3); font-size: 12.5px; }
.side a, .side button.side-link { display: flex; align-items: center; gap: 10px; height: 38px; padding: 0 12px; border-radius: 10px; color: var(--text-2); font: 14px inherit; font-family: inherit; border: 0; background: none; text-align: left; cursor: pointer; width: 100%; }
.side a:hover, .side button.side-link:hover { color: var(--text); background: var(--panel); }
.side a.on { color: var(--text); background: var(--panel-2); }
.side .spacer { flex: 1; }
.side .danger-link { color: var(--danger); }
.content { overflow-y: auto; scroll-behavior: smooth; }
.content-in { max-width: 820px; margin: 0 auto; padding: 40px 48px 120px; }
.sec { padding-bottom: 40px; margin-bottom: 40px; border-bottom: 1px solid var(--line); scroll-margin-top: 32px; }
.sec:last-child { border-bottom: 0; }
.sec-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 18px; }
.sec h2 { font-size: 20px; }
.sec-head p, .sec > p.muted { color: var(--text-2); font-size: 14.5px; margin-top: 6px; }
.card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.card-pad { padding: 22px; }
.rows { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.r { display: flex; align-items: center; gap: 14px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.r:last-child { border-bottom: 0; }
.r .grow { flex: 1; min-width: 0; }
.r b { font-weight: 600; font-size: 14.5px; }
.r p { color: var(--text-2); font-size: 13.5px; margin-top: 2px; }
.r .acts { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.r-icon { width: 36px; height: 36px; border-radius: 10px; background: var(--panel-2); display: grid; place-items: center; color: var(--text-2); flex: none; font-size: 15px; }
.inline { display: flex; gap: 10px; }
.inline input { flex: 1; }
.profile { display: flex; gap: 16px; align-items: center; }
.profile .avatar { width: 56px; height: 56px; font-size: 22px; }
.profile h1 { font-size: 24px; }
.profile .meta { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.status { margin-top: 20px; }
.status h3 { font-size: 17px; margin-bottom: 4px; }
.status p { color: var(--text-2); font-size: 14px; margin-bottom: 16px; }
.panel-2 { background: var(--bg); border: 1px dashed var(--line-2); border-radius: 12px; padding: 16px; margin-top: 12px; display: grid; gap: 12px; }
.secret { font: 15px var(--mono); letter-spacing: 0.08em; word-break: break-all; color: var(--accent); }

/* admin */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 28px; }
.stat { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; background: var(--panel); }
.stat span { color: var(--text-3); font-size: 12.5px; }
.stat b { display: block; font-size: 26px; font-weight: 650; letter-spacing: -0.02em; margin-top: 2px; }
.create { display: grid; grid-template-columns: 1fr 150px 150px auto; gap: 10px; align-items: end; }
.new-code { display: flex; align-items: center; gap: 16px; margin-top: 14px; padding: 16px 18px; border-radius: var(--radius); border: 1px solid var(--accent-line); background: var(--accent-soft); }
.new-code .secret { font-size: 20px; }
.feed { display: grid; }
.feed div { display: flex; justify-content: space-between; gap: 16px; padding: 12px 2px; border-bottom: 1px solid var(--line); font-size: 14px; color: var(--text-2); }
.feed div b { color: var(--text); font-weight: 600; }
.feed time { color: var(--text-3); font-size: 12.5px; white-space: nowrap; }
.empty { color: var(--text-3); padding: 18px; text-align: center; font-size: 14px; }
.center-page { display: grid; place-items: center; min-height: calc(100vh - var(--nav-h)); padding: 24px; text-align: center; }
.center-page .box { max-width: 420px; display: grid; gap: 14px; justify-items: center; }
.center-page h1 { font-size: 28px; }

@media (max-width: 960px) {
  .features, .steps { grid-template-columns: 1fr; }
  .plans { grid-template-columns: 1fr 1fr; }
  .window-body { grid-template-columns: 1fr; }
  .w-side { display: none; }
  .stats { grid-template-columns: 1fr 1fr; }
  .create { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav-links { display: none; }
  .plans { grid-template-columns: 1fr; }
  .shell { display: block; height: auto; }
  .side { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); padding: 10px 12px; position: sticky; top: var(--nav-h); background: var(--bg); z-index: 10; }
  .side-me, .side .spacer { display: none; }
  .side a, .side button.side-link { width: auto; white-space: nowrap; height: 34px; }
  .content { overflow: visible; }
  .content-in { padding: 28px 16px 80px; }
  .redeem-row, .inline { flex-direction: column; }
  .create { grid-template-columns: 1fr; }
}

/* ---------- motion: things ease in as they scroll into view ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1); }
.reveal.in { opacity: 1; transform: none; }
.hero .word { display: inline-block; opacity: 0; filter: blur(8px); transform: translateY(8px); animation: word-in 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) forwards; }
.hero .fade-up { opacity: 0; animation: fade-up 0.8s cubic-bezier(0.2, 0.7, 0.2, 1) forwards; }
@keyframes word-in { to { opacity: 1; filter: blur(0); transform: none; } }
@keyframes fade-up { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .reveal, .hero .word, .hero .fade-up { opacity: 1; transform: none; filter: none; animation: none; transition: none; }
}