/* =========================================================
   Twinpad – design system
   ========================================================= */

:root {
  --bg: #07090f;
  --bg-2: #0c0f18;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.06);
  --surface-solid: #10141f;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #eef1f8;
  --text-2: #a3abbd;
  --text-3: #6b7489;
  --accent: #8b7bff;
  --accent-2: #2dd4ee;
  --accent-ink: #ffffff;
  --grad: linear-gradient(135deg, #8b7bff 0%, #5b8cff 50%, #2dd4ee 100%);
  --ok: #34d399;
  --warn: #fbbf24;
  --danger: #f87171;
  --shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.6);
  --glow-1: rgba(139, 123, 255, 0.22);
  --glow-2: rgba(45, 212, 238, 0.14);
  --radius: 18px;
  --radius-sm: 12px;
  --font: "Inter", "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", "Cascadia Code", "SF Mono", Consolas, "Liberation Mono", monospace;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f4f6fb;
  --bg-2: #eef1f8;
  --surface: rgba(255, 255, 255, 0.75);
  --surface-2: rgba(15, 23, 42, 0.045);
  --surface-solid: #ffffff;
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.16);
  --text: #0f1424;
  --text-2: #4b5468;
  --text-3: #8790a3;
  --accent: #6d5cf5;
  --accent-2: #0ea5c6;
  --grad: linear-gradient(135deg, #6d5cf5 0%, #4b74f0 50%, #0ea5c6 100%);
  --shadow: 0 20px 50px -24px rgba(30, 41, 80, 0.28);
  --glow-1: rgba(109, 92, 245, 0.16);
  --glow-2: rgba(14, 165, 198, 0.12);
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }

body {
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: -20vh -10vw auto -10vw;
  height: 80vh;
  background:
    radial-gradient(40% 50% at 20% 30%, var(--glow-1), transparent 70%),
    radial-gradient(35% 45% at 80% 20%, var(--glow-2), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.55), transparent 60%);
  pointer-events: none;
  z-index: -1;
}

a { color: inherit; }
::selection { background: color-mix(in srgb, var(--accent) 40%, transparent); }

.i { width: 18px; height: 18px; flex: none; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.i-sm { width: 15px; height: 15px; }
.i-lg { width: 22px; height: 22px; }

/* ---------- top nav ---------- */

.nav {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 12px;
  padding: 14px clamp(16px, 4vw, 32px);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--border);
}
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 17px; letter-spacing: -0.02em; }
.brand-mark { width: 30px; height: 30px; }
.brand b { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav .spacer { flex: 1; }

/* ---------- buttons ---------- */

.btn {
  --h: 40px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: var(--h); padding: 0 16px;
  border-radius: 12px; border: 1px solid var(--border);
  background: var(--surface-2); color: var(--text);
  font: inherit; font-weight: 600; font-size: 14px; white-space: nowrap;
  cursor: pointer; text-decoration: none;
  transition: background .15s, border-color .15s, transform .08s, box-shadow .2s, opacity .15s;
}
.btn:hover { border-color: var(--border-strong); background: color-mix(in srgb, var(--surface-2) 100%, var(--text) 4%); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, .icon-btn:focus-visible, input:focus-visible, textarea:focus-visible, .seg button:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
.btn[disabled] { opacity: .5; pointer-events: none; }

.btn-primary {
  background: var(--grad); color: var(--accent-ink); border-color: transparent;
  box-shadow: 0 8px 24px -10px color-mix(in srgb, var(--accent) 70%, transparent), inset 0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover { filter: brightness(1.08); border-color: transparent; background: var(--grad); }
.btn-lg { --h: 52px; padding: 0 22px; font-size: 15px; border-radius: 14px; }
.btn-sm { --h: 32px; padding: 0 10px; font-size: 13px; border-radius: 10px; }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-ghost:hover { background: var(--surface-2); border-color: transparent; }
.btn-danger { color: var(--danger); }
.btn-danger:hover { background: color-mix(in srgb, var(--danger) 12%, transparent); border-color: color-mix(in srgb, var(--danger) 35%, transparent); }
.btn-block { width: 100%; }

.icon-btn {
  display: inline-grid; place-items: center;
  width: 34px; height: 34px; border-radius: 10px;
  border: 1px solid transparent; background: transparent; color: var(--text-2);
  cursor: pointer; transition: background .15s, color .15s, border-color .15s;
}
.icon-btn:hover { background: var(--surface-2); color: var(--text); }
.icon-btn.active { color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); }
.icon-btn.danger:hover { color: var(--danger); background: color-mix(in srgb, var(--danger) 12%, transparent); }

/* ---------- inputs ---------- */

.field { display: grid; gap: 6px; }
.label { font-size: 12.5px; font-weight: 600; color: var(--text-2); letter-spacing: .02em; text-transform: uppercase; }
.input {
  width: 100%; height: 46px; padding: 0 14px;
  border-radius: 12px; border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 50%, transparent);
  color: var(--text); font: inherit; font-size: 15px;
  transition: border-color .15s, box-shadow .15s;
}
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent); }
.input::placeholder { color: var(--text-3); }
.input.mono { font-family: var(--mono); letter-spacing: .12em; text-transform: uppercase; }

.checkbox { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text-2); cursor: pointer; user-select: none; }
.checkbox input { width: 16px; height: 16px; accent-color: var(--accent); }

.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 4px; padding: 4px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--border); }
.seg button { height: 36px; border: 0; border-radius: 9px; background: transparent; color: var(--text-2); font: inherit; font-weight: 600; font-size: 13.5px; cursor: pointer; transition: background .15s, color .15s; }
.seg button:hover { color: var(--text); }
.seg button[aria-pressed="true"] { background: var(--surface-solid); color: var(--text); box-shadow: 0 1px 2px rgba(0,0,0,.2), 0 0 0 1px var(--border); }

/* OTP code boxes */
.otp { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
.otp input {
  width: 100%; height: 58px; text-align: center;
  border-radius: 12px; border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 50%, transparent);
  color: var(--text); font-family: var(--mono); font-size: 24px; font-weight: 600;
  transition: border-color .15s, box-shadow .15s, transform .1s;
}
.otp input:nth-child(3) { margin-right: 10px; }
.otp input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent); }
.otp input:not(:placeholder-shown) { border-color: var(--border-strong); }
.shake { animation: shake .4s; }
@keyframes shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }

/* ---------- cards ---------- */

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.card-pad { padding: clamp(18px, 3vw, 26px); }
.card-head { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.card-title { display: flex; align-items: center; gap: 9px; margin: 0; font-size: 14px; font-weight: 650; letter-spacing: -0.005em; }
.card-title .i { color: var(--accent); }
.card-head .spacer { flex: 1; }
.count { min-width: 22px; height: 20px; padding: 0 7px; border-radius: 999px; background: var(--surface-2); color: var(--text-2); font-size: 12px; font-weight: 600; display: inline-grid; place-items: center; }

/* ---------- home ---------- */

.home { max-width: 1120px; margin: 0 auto; padding: clamp(28px, 6vw, 72px) clamp(16px, 4vw, 32px) 64px; }
.hero { text-align: center; max-width: 760px; margin: 0 auto 44px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px 6px 8px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text-2); font-size: 13px; font-weight: 500;
}
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ok) 20%, transparent); }
.hero h1 { margin: 20px 0 14px; font-size: clamp(34px, 6vw, 58px); line-height: 1.04; letter-spacing: -0.035em; font-weight: 750; }
.hero h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { margin: 0 auto; max-width: 600px; color: var(--text-2); font-size: clamp(15px, 2vw, 18px); }

.start-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; max-width: 920px; margin: 0 auto; }
.start-card { display: grid; gap: 18px; align-content: start; }
.start-card h2 { margin: 0; font-size: 19px; letter-spacing: -0.02em; display: flex; align-items: center; gap: 10px; }
.start-card .sub { margin: -10px 0 0; color: var(--text-2); font-size: 14px; }
.badge-ico { width: 36px; height: 36px; border-radius: 11px; display: grid; place-items: center; background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); }
.badge-ico.cyan { background: color-mix(in srgb, var(--accent-2) 16%, transparent); color: var(--accent-2); }
.hint { font-size: 12.5px; color: var(--text-3); display: flex; gap: 6px; align-items: center; }

.features { margin: 72px auto 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.feature { padding: 20px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); }
.feature .badge-ico { margin-bottom: 12px; }
.feature h3 { margin: 0 0 6px; font-size: 15px; letter-spacing: -0.01em; }
.feature p { margin: 0; font-size: 13.5px; color: var(--text-2); }

.section-title { text-align: center; margin: 80px 0 24px; font-size: 26px; letter-spacing: -0.025em; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; counter-reset: s; }
.step { padding: 20px; border-radius: var(--radius); border: 1px dashed var(--border-strong); }
.step::before { counter-increment: s; content: counter(s); display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 9px; background: var(--grad); color: #fff; font-weight: 700; font-size: 13px; margin-bottom: 10px; }
.step h3 { margin: 0 0 4px; font-size: 15px; }
.step p { margin: 0; color: var(--text-2); font-size: 13.5px; }

.footer { text-align: center; color: var(--text-3); font-size: 13px; margin-top: 64px; }

/* ---------- room ---------- */

.room-nav { flex-wrap: wrap; row-gap: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  height: 36px; padding: 0 12px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface);
  font-size: 13.5px; font-weight: 600; color: var(--text); white-space: nowrap;
}
button.chip { cursor: pointer; font-family: inherit; }
button.chip:hover { border-color: var(--border-strong); }
.chip .muted { color: var(--text-3); font-weight: 500; }
.chip .code { font-family: var(--mono); letter-spacing: .08em; font-size: 15px; }
.chip.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 35%, transparent); }
.chip.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, transparent); animation: pulse-b 1.2s infinite; }
@keyframes pulse-b { 50% { border-color: transparent; } }

.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text-3); }
.status-dot.on { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 22%, transparent); }
.status-dot.wait { background: var(--warn); animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: .3; } }

.avatars { display: inline-flex; align-items: center; }
.avatar {
  width: 30px; height: 30px; border-radius: 50%;
  display: grid; place-items: center;
  color: #fff; font-size: 12px; font-weight: 700;
  border: 2px solid var(--bg); margin-left: -8px; position: relative;
  transition: transform .2s;
}
.avatar:first-child { margin-left: 0; }
.avatar.offline { opacity: .35; filter: grayscale(.6); }
.avatar.typing { transform: translateY(-3px); box-shadow: 0 0 0 2px var(--accent); }

.room {
  max-width: 1440px; margin: 0 auto;
  padding: 18px clamp(12px, 3vw, 28px) 28px;
  display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 18px;
  min-height: calc(100dvh - 70px);
}
.side { display: grid; gap: 18px; align-content: start; }

.editor-card { display: flex; flex-direction: column; min-height: 520px; }
.editor-card .card-head { flex-wrap: wrap; }
.editor-wrap { position: relative; flex: 1; display: flex; }
#editor {
  flex: 1; width: 100%; min-height: 420px; resize: none;
  padding: 20px 22px; border: 0; outline: none;
  background: transparent; color: var(--text);
  font-family: var(--font); font-size: 16px; line-height: 1.65;
  tab-size: 4;
}
#editor.mono { font-family: var(--mono); font-size: 14.5px; line-height: 1.7; }
#editor.nowrap { white-space: pre; overflow-wrap: normal; overflow-x: auto; }
#editor::placeholder { color: var(--text-3); }
.editor-foot {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 10px 16px; border-top: 1px solid var(--border);
  font-size: 12.5px; color: var(--text-3);
}
.editor-foot .spacer { flex: 1; }
.e2e { display: inline-flex; align-items: center; gap: 6px; color: var(--ok); font-weight: 600; }
.sync { display: inline-flex; align-items: center; gap: 7px; }

/* secrets */
.secret-form { display: grid; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.secret-form .row { display: flex; gap: 8px; align-items: center; }
.secret-form .input { height: 40px; font-size: 14px; }
.list { list-style: none; margin: 0; padding: 6px; display: grid; gap: 2px; max-height: 340px; overflow: auto; }
.empty { padding: 22px 16px; text-align: center; color: var(--text-3); font-size: 13px; }
.item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px; border-radius: 12px;
  transition: background .15s;
  animation: pop .25s ease-out;
}
.item:hover { background: var(--surface-2); }
@keyframes pop { from { opacity: 0; transform: translateY(4px); } }
.item-ico { width: 36px; height: 36px; flex: none; border-radius: 10px; display: grid; place-items: center; background: var(--surface-2); color: var(--text-2); }
.item-ico.key { color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); }
.item-ico.burn { color: #fb923c; background: color-mix(in srgb, #fb923c 14%, transparent); }
.item-ico.img { color: var(--accent-2); background: color-mix(in srgb, var(--accent-2) 14%, transparent); }
.item-body { flex: 1; min-width: 0; }
.item-title { font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item-sub { font-size: 12.5px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: flex; gap: 6px; align-items: center; }
.item-sub .secret-val { font-family: var(--mono); color: var(--text-2); letter-spacing: .04em; }
.item-actions { display: flex; gap: 2px; }
.tag { display: inline-flex; align-items: center; gap: 4px; padding: 1px 7px; border-radius: 999px; font-size: 11px; font-weight: 700; letter-spacing: .02em; }
.tag.burn { color: #fb923c; background: color-mix(in srgb, #fb923c 14%, transparent); }
.tag.you { color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); }

.progress { height: 4px; border-radius: 99px; background: var(--surface-2); overflow: hidden; margin-top: 6px; }
.progress > i { display: block; height: 100%; width: 0; background: var(--grad); border-radius: inherit; transition: width .2s; }

.dropzone {
  margin: 14px 16px 6px; padding: 18px; border-radius: 14px;
  border: 1.5px dashed var(--border-strong);
  display: flex; align-items: center; gap: 12px;
  color: var(--text-2); font-size: 13.5px; cursor: pointer;
  transition: border-color .15s, background .15s, color .15s;
}
.dropzone:hover, .dropzone.over { border-color: var(--accent); color: var(--text); background: color-mix(in srgb, var(--accent) 7%, transparent); }
.dropzone b { color: var(--text); }
.dropzone small { display: block; color: var(--text-3); font-size: 12px; }

.drop-overlay {
  position: fixed; inset: 0; z-index: 80;
  display: none; place-items: center;
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  backdrop-filter: blur(6px);
}
.drop-overlay.show { display: grid; }
.drop-overlay .box {
  padding: 48px 64px; border-radius: 24px; text-align: center;
  border: 2px dashed var(--accent); background: var(--surface-solid);
  font-size: 18px; font-weight: 650;
}
.drop-overlay .box .i { width: 42px; height: 42px; color: var(--accent); margin-bottom: 10px; }

/* member names */
.name-input { height: 30px; padding: 0 8px; font-size: 13.5px; border-radius: 8px; }

/* ---------- dialogs ---------- */

dialog {
  border: 1px solid var(--border-strong); border-radius: 22px;
  background: var(--surface-solid); color: var(--text);
  padding: 0; width: min(460px, calc(100vw - 32px));
  box-shadow: 0 40px 120px -20px rgba(0,0,0,.6);
}
dialog::backdrop { background: rgba(5, 7, 12, .6); backdrop-filter: blur(4px); }
dialog[open] { animation: dlg .2s ease-out; }
@keyframes dlg { from { opacity: 0; transform: translateY(10px) scale(.98); } }
.dlg-head { display: flex; align-items: center; gap: 10px; padding: 18px 20px 0; }
.dlg-head h3 { margin: 0; font-size: 17px; flex: 1; letter-spacing: -0.01em; }
.dlg-body { padding: 18px 20px 20px; display: grid; gap: 16px; }
.dlg-foot { display: flex; gap: 8px; justify-content: flex-end; padding: 0 20px 20px; }
.qr {
  justify-self: center; width: 220px; height: 220px; padding: 12px;
  border-radius: 18px; background: #fff;
  display: grid; place-items: center;
}
.qr svg { width: 100%; height: 100%; }
.cred { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.cred-box { padding: 12px 14px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--border); display: grid; gap: 2px; position: relative; }
.cred-box .v { font-family: var(--mono); font-size: 20px; font-weight: 650; letter-spacing: .1em; }
.cred-box .icon-btn { position: absolute; top: 8px; right: 8px; }
.link-row { display: flex; gap: 8px; }
.link-row .input { font-family: var(--mono); font-size: 12.5px; height: 40px; }
.note { font-size: 12.5px; color: var(--text-3); display: flex; gap: 8px; align-items: flex-start; }
.note .i { color: var(--warn); margin-top: 1px; }
.reveal {
  padding: 16px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--border);
  font-family: var(--mono); font-size: 16px; word-break: break-all; white-space: pre-wrap; max-height: 240px; overflow: auto;
}

/* menu */
.menu { position: relative; }
.menu-pop {
  position: absolute; right: 0; top: calc(100% + 8px); z-index: 40;
  min-width: 220px; padding: 6px; border-radius: 14px;
  background: var(--surface-solid); border: 1px solid var(--border-strong);
  box-shadow: var(--shadow); display: none;
}
.menu-pop.open { display: grid; animation: dlg .15s ease-out; }
.menu-pop button {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 9px 10px; border: 0; border-radius: 9px;
  background: transparent; color: var(--text); font: inherit; font-size: 14px; text-align: left; cursor: pointer;
}
.menu-pop button:hover { background: var(--surface-2); }
.menu-pop button.danger { color: var(--danger); }
.menu-pop hr { border: 0; border-top: 1px solid var(--border); margin: 4px 2px; }
.menu-label { font-size: 11.5px; font-weight: 700; color: var(--text-3); text-transform: uppercase; letter-spacing: .05em; padding: 6px 10px 2px; }

/* ---------- toasts ---------- */

.toasts { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); z-index: 100; display: grid; gap: 8px; justify-items: center; pointer-events: none; width: max-content; max-width: calc(100vw - 24px); }
.toast {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 16px; border-radius: 14px;
  background: var(--surface-solid); border: 1px solid var(--border-strong);
  box-shadow: var(--shadow); font-size: 14px; font-weight: 500;
  animation: toast-in .25s ease-out; pointer-events: auto;
}
.toast.ok .i { color: var(--ok); }
.toast.warn .i { color: var(--warn); }
.toast.err .i { color: var(--danger); }
.toast.out { animation: toast-out .2s forwards; }
@keyframes toast-in { from { opacity: 0; transform: translateY(12px) scale(.97); } }
@keyframes toast-out { to { opacity: 0; transform: translateY(8px); } }

/* ---------- full-screen states ---------- */

.screen {
  position: fixed; inset: 0; z-index: 90;
  display: grid; place-items: center; padding: 16px;
  background: var(--bg);
}
.screen[hidden] { display: none; }
.screen-box { width: min(440px, 100%); text-align: center; display: grid; gap: 16px; justify-items: center; }
.screen-box h2 { margin: 0; font-size: 24px; letter-spacing: -0.02em; }
.screen-box p { margin: 0; color: var(--text-2); }
.screen-box .card { width: 100%; text-align: left; }
.spinner { width: 44px; height: 44px; border-radius: 50%; border: 3px solid var(--surface-2); border-top-color: var(--accent); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.big-ico { width: 64px; height: 64px; border-radius: 20px; display: grid; place-items: center; background: var(--surface-2); }
.big-ico .i { width: 30px; height: 30px; }
.big-ico.lock { color: var(--accent); background: color-mix(in srgb, var(--accent) 15%, transparent); }
.big-ico.gone { color: var(--danger); background: color-mix(in srgb, var(--danger) 13%, transparent); }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.hide-sm { }

/* ---------- responsive ---------- */

@media (max-width: 1080px) {
  .room { grid-template-columns: 1fr; }
  .side { grid-template-columns: 1fr 1fr; }
  .side > :last-child { grid-column: 1 / -1; }
}
@media (max-width: 820px) {
  .start-grid { grid-template-columns: 1fr; }
  .features, .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .side { grid-template-columns: 1fr; }
  .features, .steps { grid-template-columns: 1fr; }
  .hide-sm { display: none !important; }
  .editor-card { min-height: 60vh; }
  #editor { min-height: 46vh; padding: 16px; font-size: 16px; }
  .otp input { height: 52px; font-size: 21px; }
  .otp { gap: 6px; }
  .otp input:nth-child(3) { margin-right: 6px; }
  .cred .v { font-size: 17px; }
  .nav { padding: 10px 12px; gap: 6px; }
  .room-nav { flex-wrap: nowrap; }
  .editor-card .card-head { gap: 4px; flex-wrap: nowrap; }
  .chip { padding: 0 10px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
#pwForm { display: grid; gap: 14px; }

/* ---------- stats ---------- */

.stats { max-width: 1120px; margin: 0 auto; padding: 24px clamp(16px, 4vw, 32px) 64px; display: grid; gap: 18px; }
.stats .muted { color: var(--text-3); }
.stats-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.stats-head h1 { margin: 0; font-size: 28px; letter-spacing: -0.025em; }
.stats-head p { margin: 4px 0 0; font-size: 13.5px; }
.stats-head .seg a { display: grid; place-items: center; height: 36px; padding: 0 14px; border-radius: 9px; color: var(--text-2); font-weight: 600; font-size: 13.5px; text-decoration: none; }
.stats-head .seg a:hover { color: var(--text); }
.stats-head .seg a[aria-pressed="true"] { background: var(--surface-solid); color: var(--text); box-shadow: 0 1px 2px rgba(0,0,0,.2), 0 0 0 1px var(--border); }

.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.tile { display: grid; gap: 4px; padding: 16px 18px; border-radius: var(--radius-sm); background: var(--surface); border: 1px solid var(--border); }
.tile b { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.tile small { color: var(--text-3); font-size: 12.5px; }

.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.chart-body { padding: 12px 14px 8px; }
.chart { display: block; width: 100%; height: auto; overflow: visible; }
.chart .grid { stroke: var(--border); stroke-width: 1; }
.chart .axis { stroke: var(--border-strong); stroke-width: 1; }
.chart .tick { fill: var(--text-3); font-size: 11px; font-family: var(--font); font-variant-numeric: tabular-nums; }
.chart .bar { fill: var(--accent); }
.chart .hit { fill: transparent; }
.chart .col:hover .hit { fill: var(--surface-2); }
.chart .col:hover .bar { fill: var(--accent-2); }
.chart-note { margin: 0; padding: 0 16px 14px; color: var(--text-3); font-size: 12.5px; }

.hbars { list-style: none; margin: 0; padding: 14px 16px; display: grid; gap: 12px; }
.hbars li { display: grid; grid-template-columns: 76px 1fr 84px; align-items: center; gap: 12px; font-size: 13.5px; }
.hb-label { color: var(--text-2); }
.hb-val { text-align: right; font-variant-numeric: tabular-nums; }
.hb-val small { color: var(--text-3); margin-left: 4px; }
.hbars meter { width: 100%; height: 10px; appearance: none; -webkit-appearance: none; background: var(--surface-2); border: 0; border-radius: 4px; }
.hbars meter::-webkit-meter-bar { background: var(--surface-2); border: 0; border-radius: 4px; height: 10px; }
.hbars meter::-webkit-meter-optimum-value { background: var(--accent); border-radius: 4px; }
.hbars meter::-moz-meter-bar { background: var(--accent); border-radius: 4px; }

.kv { display: grid; grid-template-columns: 1fr auto; margin: 0; padding: 6px 16px 12px; }
.kv dt, .kv dd { margin: 0; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 13.5px; }
.kv dt { color: var(--text-2); }
.kv dd { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.kv dt:nth-last-child(2), .kv dd:last-child { border-bottom: 0; }

.table-wrap { overflow-x: auto; }
.data { width: 100%; border-collapse: collapse; font-size: 13px; font-variant-numeric: tabular-nums; }
.data th, .data td { padding: 9px 14px; text-align: right; border-bottom: 1px solid var(--border); white-space: nowrap; }
.data th { color: var(--text-3); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
.data th:first-child, .data td:first-child { text-align: left; }
.data tbody tr:hover { background: var(--surface-2); }
.data tbody tr:last-child td { border-bottom: 0; }

@media (max-width: 820px) {
  .tiles { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
}

/* ---------- content pages (guides, privacy) ---------- */

.doc { max-width: 1120px; margin: 0 auto; padding: 20px clamp(16px, 4vw, 32px) 48px; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; max-width: 760px; margin: 12px auto 0; font-size: 13px; color: var(--text-3); }
.crumbs a { color: var(--text-2); text-decoration: none; }
.crumbs a:hover { color: var(--text); text-decoration: underline; }

.prose { max-width: 760px; margin: 0 auto; font-size: 16.5px; line-height: 1.7; }
.prose h1 { margin: 18px 0 14px; font-size: clamp(30px, 5vw, 44px); line-height: 1.1; letter-spacing: -0.03em; }
.prose .lede { font-size: clamp(17px, 2.2vw, 19.5px); color: var(--text-2); margin: 0 0 28px; }
.prose h2 { margin: 44px 0 12px; font-size: 24px; line-height: 1.25; letter-spacing: -0.02em; }
.prose h3 { margin: 28px 0 6px; font-size: 18px; letter-spacing: -0.01em; }
.prose p { margin: 0 0 16px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 1.3em; }
.prose li { margin: 6px 0; }
.prose a { color: var(--accent); text-underline-offset: 3px; }
.prose a:hover { color: var(--accent-2); }
.prose b { font-weight: 650; }
.prose kbd { font-family: var(--mono); font-size: .82em; padding: 1px 6px; border-radius: 6px; border: 1px solid var(--border-strong); border-bottom-width: 2px; background: var(--surface-2); }
.prose code { font-family: var(--mono); font-size: .88em; padding: 1px 6px; border-radius: 6px; background: var(--surface-2); }
.prose pre { margin: 0 0 18px; padding: 16px 18px; border-radius: var(--radius-sm); background: var(--surface-solid); border: 1px solid var(--border); overflow-x: auto; font-size: 13.5px; line-height: 1.6; }
.prose pre code { padding: 0; background: none; }
.prose .updated { margin-top: 40px; font-size: 13px; color: var(--text-3); }

.steps-list { list-style: none; padding: 0 !important; counter-reset: st; display: grid; gap: 12px; }
.steps-list li { counter-increment: st; position: relative; margin: 0; padding: 14px 16px 14px 56px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--surface); }
.steps-list li::before { content: counter(st); position: absolute; left: 16px; top: 14px; width: 26px; height: 26px; border-radius: 8px; background: var(--grad); color: #fff; font-weight: 700; font-size: 13px; display: grid; place-items: center; }

.simple { width: 100%; border-collapse: collapse; margin: 0 0 18px; font-size: 14.5px; display: block; overflow-x: auto; }
.simple th, .simple td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
.simple th { color: var(--text-3); font-size: 12.5px; text-transform: uppercase; letter-spacing: .03em; font-weight: 600; }
.simple td:first-child { color: var(--text-2); }

.cta { max-width: 760px; margin: 48px auto 0; display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; }
.cta h2 { margin: 0 0 4px; font-size: 19px; letter-spacing: -0.02em; }
.cta p { margin: 0; color: var(--text-2); font-size: 14.5px; }

.related { max-width: 1120px; margin: 64px auto 0; }
.related > h2 { text-align: center; margin: 0 0 20px; font-size: 22px; letter-spacing: -0.02em; }
.related-grid, .uses { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.related-card { display: grid; gap: 6px; align-content: start; padding: 18px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); text-decoration: none; transition: border-color .15s, transform .15s; }
.related-card:hover { border-color: color-mix(in srgb, var(--accent) 45%, transparent); transform: translateY(-1px); }
.related-card .badge-ico { margin-bottom: 6px; }
.related-card b { font-size: 15px; letter-spacing: -0.01em; }
.related-card span:last-child { font-size: 13.5px; color: var(--text-2); }

.faq { max-width: 760px; margin: 0 auto; display: grid; gap: 10px; }
.faq details { border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); }
.faq summary { cursor: pointer; list-style: none; padding: 15px 18px; font-weight: 600; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--text-3); font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0; padding: 0 18px 16px; color: var(--text-2); font-size: 14.5px; }

.site-footer { max-width: 1120px; margin: 80px auto 0; padding-top: 32px; border-top: 1px solid var(--border); display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.site-footer p { margin: 12px 0 0; color: var(--text-3); font-size: 13.5px; max-width: 340px; }
.site-footer .sf-legal { font-size: 12.5px; }
.sf-legal a { color: var(--text-2); text-decoration: none; }
.sf-legal a:hover { color: var(--text); }
.sf-col { display: grid; gap: 8px; align-content: start; }
.sf-col h2 { margin: 0 0 4px; font-size: 12.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--text-3); }
.sf-col a { color: var(--text-2); text-decoration: none; font-size: 14px; }
.sf-col a:hover { color: var(--text); }

@media (max-width: 820px) {
  .site-footer { grid-template-columns: 1fr 1fr; }
  .sf-brand { grid-column: 1 / -1; }
  .cta { grid-template-columns: 1fr; }
}