/* ==========================================================================
   M420 — companion app
   Side-rail layout, glass panels, spring transitions.
   ========================================================================== */

:root {
  --bg: #07090c;
  --panel: #10141a;
  --panel-2: #151b23;
  --line: #222b37;
  --line-soft: #1a222c;
  --text: #eef2f7;
  --muted: #8995a6;
  --faint: #5b6675;
  --good: #34d399;
  --bad: #f87171;
  --warn: #fbbf24;

  --accent: #22d3ee;
  --accent-2: #8b5cf6;
  --accent-soft: rgba(34, 211, 238, .13);

  --opacity: .94;
  --radius: 22px;
  --radius-sm: 14px;
  --rail: 96px;
  --gap: 18px;

  --spring: cubic-bezier(.32, 1.28, .46, 1);
  --ease: cubic-bezier(.22, .9, .3, 1);
}

html[data-accent="violet"]  { --accent: #a78bfa; --accent-2: #6366f1; --accent-soft: rgba(167,139,250,.14); }
html[data-accent="emerald"] { --accent: #34d399; --accent-2: #10b981; --accent-soft: rgba(52,211,153,.14); }
html[data-accent="amber"]   { --accent: #fbbf24; --accent-2: #f97316; --accent-soft: rgba(251,191,36,.14); }
html[data-accent="rose"]    { --accent: #fb7185; --accent-2: #e11d48; --accent-soft: rgba(251,113,133,.14); }

* { box-sizing: border-box; }

/* [hidden] must beat the layout display values below */
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(900px 520px at 8% -12%, rgba(34, 211, 238, .10), transparent 62%),
    radial-gradient(860px 520px at 92% 4%, var(--accent-soft), transparent 64%),
    var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Inter, Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }

::selection { background: var(--accent-soft); }

/* ─────────────────────────────────  gate  ───────────────────────────────── */

.gate {
  position: fixed;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 18px;
  padding: 24px;
  z-index: 40;
  background:
    radial-gradient(720px 420px at 50% 18%, rgba(34, 211, 238, .10), transparent 66%),
    var(--bg);
  transition: opacity .42s var(--ease), transform .42s var(--ease);
}
.gate.leaving { opacity: 0; transform: scale(1.03); pointer-events: none; }

.gate-card {
  position: relative;
  width: min(420px, calc(100vw - 40px));
  padding: 34px 28px 24px;
  border-radius: 28px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  box-shadow: 0 32px 90px rgba(0, 0, 0, .62), inset 0 1px 0 rgba(255,255,255,.04);
  overflow: hidden;
  animation: rise .55s var(--spring) both;
}

.gate-glow {
  position: absolute;
  inset: -60% -30% auto;
  height: 220px;
  background: radial-gradient(closest-side, var(--accent), transparent 72%);
  opacity: .22;
  filter: blur(22px);
  pointer-events: none;
}

.gate-head { text-align: center; margin-bottom: 26px; }
.gate-head h1 { margin: 14px 0 4px; font-size: 24px; letter-spacing: .2px; }
.gate-sub { margin: 0; color: var(--muted); font-size: 13.5px; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #05131a;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -.5px;
  box-shadow: 0 8px 24px var(--accent-soft);
}
.brand-mark.lg { width: 56px; height: 56px; border-radius: 18px; font-size: 26px; margin: 0 auto; }

.gate-form { display: grid; gap: 10px; }
.field-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.1px;
  color: var(--muted);
  padding-left: 2px;
}

.key-wrap input {
  width: 100%;
  background: #0a0e13;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 15px 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 15px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  transition: border-color .18s, box-shadow .18s;
}
.key-wrap input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.key-wrap input::placeholder { color: var(--faint); letter-spacing: 1.4px; }

.gate-msg {
  min-height: 18px;
  margin: 2px 0 0;
  font-size: 12.5px;
  color: var(--muted);
  text-align: center;
  transition: color .2s;
}
.gate-msg.error { color: var(--bad); }
.gate-msg.ok { color: var(--good); }

.gate-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  color: var(--faint);
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--faint); transition: background .3s, box-shadow .3s; }
.dot.on { background: var(--good); box-shadow: 0 0 10px rgba(52,211,153,.7); }
.dot.off { background: var(--bad); box-shadow: 0 0 10px rgba(248,113,113,.6); }

.gate-foot { text-align: center; color: var(--faint); font-size: 12px; margin: 0; }

/* ─────────────────────────────────  shell  ───────────────────────────────── */

.shell {
  display: grid;
  grid-template-columns: var(--rail) 1fr;
  height: 100%;
  animation: fade .4s var(--ease) both;
}
.shell[data-collapsed="1"] { --rail: 68px; }

/* rail */

.rail {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 10px 14px;
  background: linear-gradient(180deg, rgba(255,255,255,.025), transparent 40%),
              rgba(10, 13, 18, .72);
  border-right: 1px solid var(--line-soft);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
  transition: padding .34s var(--spring);
  overflow: hidden;
}

.rail-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 6px 14px;
}
.shell[data-collapsed="1"] .rail-head { justify-content: center; }
.shell[data-collapsed="1"] .brand-mark { display: none; }

.rail-toggle {
  display: grid; place-items: center;
  width: 26px; height: 26px;
  border-radius: 9px;
  color: var(--faint);
  transition: color .2s, background .2s, transform .34s var(--spring);
}
.rail-toggle:hover { color: var(--text); background: rgba(255,255,255,.06); }
.shell[data-collapsed="1"] .rail-toggle { transform: rotate(180deg); }

.nav { display: flex; flex-direction: column; gap: 4px; flex: 1; min-height: 0; }

.nav-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 11px 4px 9px;
  border-radius: 15px;
  color: var(--muted);
  transition: color .22s, background .22s, transform .22s var(--spring);
}
.nav-item svg { width: 21px; height: 21px; transition: transform .3s var(--spring); }
.nav-item span {
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: .3px;
  text-transform: uppercase;
  white-space: nowrap;
  transition: opacity .2s;
}
.nav-item:hover { color: var(--text); background: rgba(255,255,255,.045); }
.nav-item:active { transform: scale(.95); }
.nav-item[aria-current="page"] {
  color: var(--accent);
  background: var(--accent-soft);
}
.nav-item[aria-current="page"] svg { transform: scale(1.06); }
.nav-item[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 50%;
  width: 3px;
  height: 22px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  transform: translateY(-50%);
  box-shadow: 0 0 12px var(--accent);
}

.shell[data-collapsed="1"] .nav-item span { opacity: 0; height: 0; overflow: hidden; }
.shell[data-collapsed="1"] .nav-item { padding: 13px 4px; }

.rail-foot { display: grid; place-items: center; padding-top: 8px; }
.rail-ver { font-size: 9.5px; letter-spacing: 1px; color: var(--faint); text-transform: uppercase; }
.shell[data-collapsed="1"] .rail-ver { opacity: 0; }

/* main */

.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100%;
  padding: 26px clamp(18px, 4vw, 44px) 0;
  overflow: hidden;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-soft);
}
.topbar h1 { margin: 0; font-size: 25px; letter-spacing: -.3px; }
.page-sub { margin: 3px 0 0; color: var(--muted); font-size: 13px; }

.top-actions { display: flex; align-items: center; gap: 10px; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .8px;
  text-transform: uppercase;
}
.pill.tier { color: var(--accent); background: var(--accent-soft); border: 1px solid transparent; }
.pill.good { color: var(--good); background: rgba(52,211,153,.13); }
.pill.bad  { color: var(--bad);  background: rgba(248,113,113,.13); }
.pill.warn { color: var(--warn); background: rgba(251,191,36,.13); }

.icon-btn {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  transition: color .2s, border-color .2s, background .2s, transform .2s var(--spring);
}
.icon-btn:hover { color: var(--text); border-color: var(--accent); background: var(--panel-2); }
.icon-btn:active { transform: rotate(-18deg) scale(.94); }
.icon-btn.spinning svg { animation: spin .7s linear; }

/* view */

.view {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 22px 4px 48px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}
.view::-webkit-scrollbar { width: 8px; }
.view::-webkit-scrollbar-thumb { background: var(--line); border-radius: 8px; }

.view.enter { animation: slideIn .34s var(--ease) both; }

/* cards */

.card {
  background: linear-gradient(180deg,
              rgba(21, 27, 35, var(--card-a, 1)),
              rgba(16, 20, 26, var(--card-a, 1)));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 20px 18px;
  margin-bottom: var(--gap);
  box-shadow: 0 14px 40px rgba(0,0,0,.34);
}
html[data-glass="1"] .card {
  background: rgba(18, 23, 30, calc(var(--card-a, 1) * 0.62));
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
}

.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.card-head h2 { margin: 0; font-size: 14px; letter-spacing: .3px; text-transform: uppercase; color: var(--muted); font-weight: 700; }
.card-head .hint { font-size: 12px; color: var(--faint); }

/* stat grid */

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(148px, 1fr)); gap: 12px; margin-bottom: var(--gap); }

.stat {
  padding: 16px 16px 15px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  transition: transform .3s var(--spring), border-color .2s;
}
.stat:hover { transform: translateY(-2px); border-color: #2c3948; }
.stat .k { font-size: 10.5px; letter-spacing: 1px; text-transform: uppercase; color: var(--faint); }
.stat .v { margin-top: 7px; font-size: 19px; font-weight: 650; letter-spacing: -.2px; }
.stat .v.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 15px; }
.stat .v.accent { color: var(--accent); }

/* rows */

.rows { display: flex; flex-direction: column; }

.row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line-soft);
  transition: background .18s;
}
.rows .row:last-child { border-bottom: 0; }
html[data-density="compact"] .row { padding: 10px 2px; }

.row-text { flex: 1; min-width: 0; }
.row-title { font-size: 14.5px; font-weight: 560; }
.row-sub { margin-top: 2px; font-size: 12px; color: var(--muted); overflow-wrap: anywhere; }
.row-sub.mono { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* switch */

.switch {
  position: relative;
  flex: none;
  width: 46px; height: 28px;
  border-radius: 999px;
  background: #232c38;
  transition: background .24s var(--ease);
}
.switch::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: #cfd8e3;
  box-shadow: 0 2px 6px rgba(0,0,0,.45);
  transition: transform .3s var(--spring), background .24s;
}
.switch[aria-checked="true"] { background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.switch[aria-checked="true"]::after { transform: translateX(18px); background: #fff; }
.switch:active::after { width: 26px; }

/* slider */

.slider-row { display: grid; gap: 8px; padding: 14px 2px; border-bottom: 1px solid var(--line-soft); }
.slider-row:last-child { border-bottom: 0; }
.slider-top { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.slider-val {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  color: var(--accent);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent) calc(var(--p, 50) * 1%), #232c38 calc(var(--p, 50) * 1%));
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  box-shadow: 0 3px 10px rgba(0,0,0,.5);
  transition: transform .18s var(--spring);
}
input[type="range"]::-webkit-slider-thumb:active { transform: scale(1.16); }
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: #fff; border: 3px solid var(--accent);
}

/* chips */

.chips { display: flex; flex-wrap: wrap; gap: 9px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 600;
  transition: color .2s, border-color .2s, background .2s, transform .2s var(--spring);
}
.chip:hover { color: var(--text); }
.chip:active { transform: scale(.95); }
.chip[aria-pressed="true"] { color: var(--text); border-color: transparent; background: var(--accent-soft); }
.chip .swatch { width: 13px; height: 13px; border-radius: 50%; box-shadow: 0 0 0 1px rgba(255,255,255,.14); }

/* buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  transition: transform .12s var(--spring), filter .18s, border-color .18s, opacity .18s;
}
.btn:hover { border-color: #33414f; }
.btn:active { transform: translateY(1px) scale(.99); }
.btn.block { width: 100%; }
.btn.primary {
  border-color: transparent;
  color: #05131a;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 12px 30px var(--accent-soft);
}
.btn.primary:hover { filter: brightness(1.07); }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--bad); border-color: rgba(248,113,113,.35); background: rgba(248,113,113,.08); }
.btn[disabled] { opacity: .55; pointer-events: none; }
.btn.loading .btn-label { opacity: .35; }
.btn.loading::after {
  content: "";
  position: absolute;
  width: 15px; height: 15px;
  border-radius: 50%;
  border: 2px solid rgba(0,0,0,.25);
  border-top-color: #05131a;
  animation: spin .7s linear infinite;
}
.btn.primary { position: relative; }

/* key display */

.keybox {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: #0a0e13;
  border: 1px dashed var(--line);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px;
  letter-spacing: 1px;
  word-break: break-all;
}
.keybox .copy { flex: none; }

.progress {
  height: 6px;
  border-radius: 999px;
  background: #1d242e;
  overflow: hidden;
  margin-top: 10px;
}
.progress > i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width .6s var(--ease);
}

.note { font-size: 12.5px; color: var(--muted); line-height: 1.6; }
.note code {
  background: #0a0e13;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 6px;
  font-size: 12px;
}

/* toast */

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translate(-50%, 16px);
  padding: 12px 20px;
  border-radius: 14px;
  background: #0d1117;
  border: 1px solid var(--line);
  box-shadow: 0 22px 60px rgba(0,0,0,.6);
  font-size: 13.5px;
  opacity: 0;
  pointer-events: none;
  z-index: 60;
  transition: opacity .24s var(--ease), transform .34s var(--spring);
}
.toast.on { opacity: 1; transform: translate(-50%, 0); }
.toast.bad { border-color: rgba(248,113,113,.5); }
.toast.good { border-color: rgba(52,211,153,.45); }

/* ─────────────────────────────  animations  ───────────────────────────── */

@keyframes rise { from { opacity: 0; transform: translateY(18px) scale(.97); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes spin { to { transform: rotate(360deg); } }

html[data-motion="1"] *,
html[data-motion="1"] *::before,
html[data-motion="1"] *::after {
  animation-duration: .001ms !important;
  transition-duration: .001ms !important;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ─────────────────────────────  responsive  ───────────────────────────── */

@media (max-width: 720px) {
  :root { --rail: 76px; --gap: 14px; }
  .shell[data-collapsed="1"] { --rail: 60px; }
  .main { padding: 18px 16px 0; }
  .topbar h1 { font-size: 21px; }
  .card { padding: 17px 16px; border-radius: 20px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .nav-item span { font-size: 8.5px; }
  .gate-card { padding: 28px 22px 20px; }
}

@media (max-width: 420px) {
  .stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat .v { font-size: 17px; }
}