:root {
  color-scheme: dark;
  --bg: #081018;
  --panel: #111c27;
  --panel-strong: #172738;
  --line: #294056;
  --text: #f3f8fb;
  --muted: #9fb0bf;
  --accent: #47d7b0;
  --accent-strong: #74e9c9;
  --danger: #ff8f8f;
}

* {
  box-sizing: border-box;
}

.login-page {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background:
    radial-gradient(circle at 20% 5%, rgba(43, 116, 144, 0.23), transparent 34rem),
    linear-gradient(150deg, #071018 0%, #0b1722 48%, #081018 100%);
  color: var(--text);
  font: 16px/1.5 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.login-card {
  width: min(100%, 430px);
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(17, 28, 39, 0.94);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.login-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(71, 215, 176, 0.55);
  border-radius: 11px;
  background: rgba(71, 215, 176, 0.12);
  color: var(--accent-strong);
  letter-spacing: 0;
}

.login-card h1 {
  margin: 28px 0 6px;
  font-size: clamp(1.8rem, 8vw, 2.35rem);
  line-height: 1.08;
}

.login-intro {
  margin: 0 0 24px;
  color: var(--muted);
}

.login-card label {
  display: block;
  margin: 15px 0 7px;
  color: #c8d4de;
  font-size: 0.92rem;
  font-weight: 650;
}

.login-card input:not([type="hidden"]) {
  width: 100%;
  min-height: 50px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none;
  background: #0b151f;
  color: var(--text);
  font: inherit;
}

.login-card input:not([type="hidden"]):focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(71, 215, 176, 0.16);
}

.login-card button {
  width: 100%;
  min-height: 52px;
  margin-top: 22px;
  border: 1px solid var(--accent);
  border-radius: 10px;
  background: linear-gradient(135deg, #1e8d75, #176a5a);
  color: #fff;
  font: inherit;
  font-weight: 760;
  cursor: pointer;
}

.login-card button:hover {
  background: linear-gradient(135deg, #249e84, #197762);
}

.login-card button:focus-visible {
  outline: 3px solid rgba(116, 233, 201, 0.48);
  outline-offset: 3px;
}

.login-error {
  margin: 0 0 18px;
  padding: 11px 12px;
  border: 1px solid rgba(255, 143, 143, 0.45);
  border-radius: 9px;
  background: rgba(148, 42, 54, 0.18);
  color: var(--danger);
}

@media (max-width: 520px) {
  .login-page {
    align-items: start;
    padding: max(18px, env(safe-area-inset-top)) 14px max(18px, env(safe-area-inset-bottom));
  }

  .login-card {
    margin-top: 8vh;
    padding: 24px 20px;
    border-radius: 15px;
  }
}