:root {
  color-scheme: dark;
  --bg: #080a0d;
  --panel: #11151c;
  --panel-2: #171d26;
  --text: #eef3f8;
  --muted: #9aa7b5;
  --line: #263241;
  --accent: #45d19e;
  --accent-2: #8ab4ff;
  --danger: #ff6b6b;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #0b1015 0, var(--bg) 20rem);
  color: var(--text);
}
a { color: var(--accent-2); text-decoration: none; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid var(--line);
  background: rgba(8, 10, 13, .86);
  position: sticky;
  top: 0;
  backdrop-filter: blur(14px);
  z-index: 5;
}
.brand { color: var(--text); font-weight: 800; letter-spacing: .02em; }
nav { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.shell { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; padding: 2rem 0 4rem; }
.hero {
  min-height: 18rem;
  display: flex;
  align-items: center;
}
.hero h1, .panel h1 { font-size: clamp(2rem, 6vw, 4.8rem); line-height: 1; margin: .35rem 0 1rem; }
.hero p, .panel p { color: var(--muted); max-width: 46rem; }
.eyebrow { color: var(--accent); text-transform: uppercase; font-size: .78rem; font-weight: 800; letter-spacing: .12em; }
.panel {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(1rem, 3vw, 2rem);
  margin-bottom: 1rem;
  box-shadow: 0 20px 70px rgba(0,0,0,.25);
}
.upload-form, .auth form { display: grid; gap: 1rem; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
label { display: grid; gap: .45rem; color: var(--muted); font-weight: 700; }
input, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #080c11;
  color: var(--text);
  min-height: 2.8rem;
  padding: .75rem .9rem;
  font: inherit;
}
input[type=file] { padding: .6rem; }
button, .button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #06100d;
  font: inherit;
  font-weight: 900;
  min-height: 2.8rem;
  padding: .75rem 1rem;
  cursor: pointer;
}
.secondary { background: #263241; color: var(--text); }
.danger { background: transparent; color: var(--danger); border: 1px solid rgba(255,107,107,.35); }
.linklike { background: transparent; color: var(--accent-2); padding: 0; min-height: auto; font-weight: 700; }
.inline { display: inline; margin: 0; }
.messages { display: grid; gap: .5rem; margin-bottom: 1rem; }
.message { border: 1px solid var(--line); padding: .8rem 1rem; border-radius: 6px; background: #11151c; }
.message.error { border-color: rgba(255,107,107,.55); color: #ffc4c4; }
.message.success { border-color: rgba(69,209,158,.55); color: #c7ffe9; }
.table { display: grid; gap: .55rem; }
.row {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .8rem;
  background: rgba(255,255,255,.025);
}
.row > :first-child { flex: 1 1 14rem; min-width: 0; word-break: break-word; }
.row > * { flex: 0 1 auto; }
.compact .row > :first-child { flex: 0 0 4rem; }
.copy { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1rem; }
.success-card h1 { font-size: clamp(1.5rem, 4vw, 3rem); word-break: break-word; }
.auth { max-width: 34rem; margin-inline: auto; }

@media (max-width: 760px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .grid { grid-template-columns: 1fr; }
  .row > *, .compact .row > :first-child { flex-basis: 100%; }
}