:root {
  color-scheme: dark;
  --page: #11100c;
  --page-deep: #08090c;
  --panel: #211d14;
  --panel-soft: #2d271a;
  --surface: rgba(255, 255, 255, .045);
  --text: #f1eadf;
  --muted: #c9bdab;
  --subtle: #9e927f;
  --accent: #d7ba7d;
  --accent-strong: #f0d392;
  --border: rgba(215, 186, 125, .28);
  --border-strong: rgba(215, 186, 125, .56);
  --danger: #ffb4a8;
  --ok: #9ee6b8;
  --focus: rgba(215, 186, 125, .24);
  --shadow: rgba(0, 0, 0, .42);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--page);
}

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  background:
    linear-gradient(145deg, rgba(54, 46, 31, .92) 0%, rgba(17, 16, 12, .98) 42%, var(--page-deep) 100%),
    var(--page);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.wrap {
  width: min(100%, 1120px);
  padding: clamp(20px, 4vw, 40px);
}

.panel {
  width: min(100%, 960px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(340px, .7fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: clamp(28px, 5vw, 56px);
  background:
    linear-gradient(180deg, rgba(215, 186, 125, .09), transparent 46%),
    linear-gradient(135deg, rgba(42, 36, 24, .96), rgba(15, 16, 20, .96));
  box-shadow: 0 30px 90px var(--shadow);
}

.top {
  min-width: 0;
}

.logo {
  width: 68px;
  height: 68px;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, .2);
  box-shadow: 0 16px 36px rgba(0, 0, 0, .22);
}

.top h1::before {
  content: "STACK MY ARCHITECTURE";
  display: block;
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .18em;
  text-transform: uppercase;
}

h1 {
  margin: 18px 0 0;
  color: var(--text);
  font-size: clamp(38px, 6vw, 68px);
  line-height: .96;
  letter-spacing: 0;
}

.lead {
  max-width: 560px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.65;
}

.stack,
.panel > .row,
#msg {
  grid-column: 2;
}

.stack {
  display: grid;
  gap: 16px;
  margin: 0;
}

label {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

input {
  width: 100%;
  min-height: 54px;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 0 15px;
  background: rgba(0, 0, 0, .22);
  color: var(--text);
  font: inherit;
  font-size: 17px;
}

input:focus {
  border-color: var(--border-strong);
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 2px;
}

.btn {
  min-height: 52px;
  display: inline-flex;
  flex: 1 1 0;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 0 16px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 15px;
  font-weight: 900;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: transform .16s ease, background .16s ease, border-color .16s ease;
}

.btn:hover {
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, .075);
  transform: translateY(-1px);
}

.btn-primary {
  min-width: 100%;
  border-color: var(--border-strong);
  background: #75623f;
}

.btn-primary:hover {
  background: #846f48;
  border-color: rgba(240, 211, 146, .82);
}

.btn[aria-busy="true"] {
  opacity: .7;
  cursor: wait;
  pointer-events: none;
  transform: none;
}

.btn[aria-busy="true"]::after {
  content: "";
  display: inline-block;
  width: .85em;
  height: .85em;
  margin-left: 8px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.btn-danger {
  border-color: rgba(255, 180, 168, .42);
}

.msg {
  margin-top: 16px;
  border-radius: 9px;
  padding: 12px 14px;
  border: 1px solid transparent;
  font-size: 15px;
  line-height: 1.55;
}

.msg.ok {
  border-color: rgba(158, 230, 184, .4);
  color: var(--ok);
  background: rgba(40, 92, 58, .2);
}

.msg.info {
  border-color: var(--border);
  color: var(--accent-strong);
  background: rgba(215, 186, 125, .08);
}

.msg.error {
  border-color: rgba(255, 180, 168, .44);
  color: var(--danger);
  background: rgba(126, 43, 34, .22);
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

.state-box {
  margin-top: 16px;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 12px 14px;
  background: rgba(0, 0, 0, .18);
}

.state-box code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (max-width: 760px) {
  body {
    align-items: start;
  }

  .wrap {
    padding: 0;
  }

  .panel {
    min-height: 100vh;
    grid-template-columns: 1fr;
    align-content: center;
    gap: 28px;
    border: 0;
    border-radius: 0;
    padding: 28px 22px;
  }

  .stack,
  .panel > .row,
  #msg {
    grid-column: 1;
  }

  .logo {
    width: 58px;
    height: 58px;
  }

  .lead {
    max-width: none;
  }

  .row {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}