:root {
  --bg: #0b1220;
  --bg-elevated: #121a2b;
  --line: #243049;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --accent: #e8b86d;
  --danger: #f87171;
  --ok: #4ade80;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 500px at 10% -10%, #1e293b 0%, transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

.shell {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 20px 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: #1e293b;
  border: 1px solid var(--accent);
  display: grid;
  place-items: center;
}

.logo span {
  width: 0;
  height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-left: 13px solid var(--accent);
  margin-left: 3px;
}

.brand h1 {
  margin: 0;
  font-size: 1.45rem;
}

.brand p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
}

label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  background: #0b1220;
  color: var(--text);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 1rem;
}

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

.row {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
  align-items: center;
}

button,
a.ghost {
  appearance: none;
  border: 0;
  border-radius: 10px;
  padding: 12px 18px;
  font-weight: 600;
  cursor: pointer;
  font-size: 1rem;
}

button.primary {
  background: var(--accent);
  color: #111827;
}

a.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  text-decoration: none;
  display: inline-block;
}

.message {
  margin-top: 14px;
  min-height: 1.2em;
  color: var(--muted);
}

.message.error {
  color: var(--danger);
}

.message.ok {
  color: var(--ok);
}

.preview {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 16px;
  align-items: start;
}

.preview img,
.preview video {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #000;
}

input[type="file"] {
  padding: 10px;
}

.meta {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.meta strong {
  color: var(--text);
}

code {
  font-family: Consolas, "Courier New", monospace;
  background: #0b1220;
  padding: 1px 6px;
  border-radius: 6px;
}

@media (max-width: 680px) {
  .preview {
    grid-template-columns: 1fr;
  }
}