:root {
  --bg: #0b0d10;
  --card: #15191f;
  --line: #303843;
  --text: #f4f6f8;
  --muted: #98a2ae;
  --accent: #7cf0c6;
  --danger: #ff8790;
}

* { box-sizing: border-box; }

html, body { height: 100%; margin: 0; }

body {
  background: radial-gradient(circle at 50% -10%, rgba(35, 112, 91, .24), transparent 48%), var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.login-shell { align-items: center; display: flex; min-height: 100%; justify-content: center; padding: 24px; }

.login-card {
  background: rgba(21, 25, 31, .94);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, .42);
  max-width: 410px;
  padding: 38px;
  width: 100%;
}

.login-mark {
  align-items: center;
  background: var(--accent);
  border-radius: 13px;
  color: #092219;
  display: flex;
  font-size: 21px;
  font-weight: 850;
  height: 46px;
  justify-content: center;
  margin-bottom: 26px;
  width: 46px;
}

.eyebrow { color: var(--accent); font-size: 10px; font-weight: 800; letter-spacing: .16em; margin: 0 0 9px; }
h1 { font-size: 27px; letter-spacing: -.03em; margin: 0; }
.subtitle { color: var(--muted); font-size: 14px; line-height: 1.5; margin: 10px 0 28px; }
label { color: #c7ced6; display: block; font-size: 12px; font-weight: 650; margin: 16px 0 7px; }
input {
  background: #0e1216;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  font: inherit;
  outline: none;
  padding: 12px 13px;
  width: 100%;
}
input:focus { border-color: #5ebda2; box-shadow: 0 0 0 3px rgba(124, 240, 198, .1); }
button {
  background: var(--accent);
  border: 0;
  border-radius: 10px;
  color: #092219;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  margin-top: 23px;
  padding: 12px;
  width: 100%;
}
button:hover { filter: brightness(1.06); }
button:disabled { cursor: wait; opacity: .7; }
.login-error { color: var(--danger); font-size: 12px; margin: 13px 0 -4px; }
.login-foot { color: #707985; font-size: 11px; margin: 27px 0 0; text-align: center; }

@media (max-width: 480px) { .login-card { padding: 28px 23px; } }