:root {
  color-scheme: dark;
  --bg: #0a0e13;
  --panel: #121820;
  --panel-2: #0f141b;
  --border: #1e2732;
  --text: #e7edf3;
  --muted: #8695a6;
  --accent: #2bd39e;
  --accent-strong: #14b98d;
  --danger: #ff6b6b;
  --radius: 14px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(43, 211, 158, 0.10), transparent 60%),
    radial-gradient(900px 500px at 100% 110%, rgba(20, 185, 141, 0.08), transparent 55%),
    var(--bg);
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-shell {
  width: 100%;
  max-width: 400px;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-bottom: 26px;
}

.brand img {
  width: 84px;
  height: 84px;
  filter: drop-shadow(0 6px 22px rgba(43, 211, 158, 0.25));
}

.brand h1 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: 0.14em;
  font-weight: 600;
}

.brand .accent { color: var(--accent); }

.brand p {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

.card {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px 26px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 7px;
  letter-spacing: 0.03em;
}

.field input[type="text"],
.field input[type="password"] {
  width: 100%;
  padding: 12px 13px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0b1017;
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field input:focus {
  border-color: var(--accent-strong);
  box-shadow: 0 0 0 3px rgba(43, 211, 158, 0.15);
}

.remember {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 4px 0 20px;
  color: var(--muted);
  font-size: 0.85rem;
  cursor: pointer;
  user-select: none;
}

.remember input {
  width: 17px;
  height: 17px;
  accent-color: var(--accent);
  cursor: pointer;
}

button.primary {
  width: 100%;
  padding: 12px 14px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  color: #04120c;
  font-size: 0.98rem;
  font-weight: 650;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: filter 0.15s, transform 0.05s;
}

button.primary:hover { filter: brightness(1.06); }
button.primary:active { transform: translateY(1px); }
button.primary:disabled { opacity: 0.6; cursor: default; }

.error {
  display: none;
  margin: 0 0 16px;
  padding: 10px 12px;
  border-radius: 9px;
  background: rgba(255, 107, 107, 0.10);
  border: 1px solid rgba(255, 107, 107, 0.35);
  color: #ffb3b3;
  font-size: 0.85rem;
}

.error.show { display: block; }

.foot {
  margin-top: 18px;
  text-align: center;
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
}