:root {
  --bg: #0A0A0A;
  --panel: #141414;
  --elevated: #1B1B1B;
  --border: #262626;
  --text: #EDEDED;
  --muted: #8A8A8A;
  --accent: #2E7DFF;
  --danger: #F87171;
  --radius: 14px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
}

* { box-sizing: border-box; }

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

.login-wrap {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(1100px 600px at 50% -10%, rgba(46,125,255,0.14), transparent 60%),
    radial-gradient(800px 500px at 90% 110%, rgba(46,125,255,0.06), transparent 55%),
    var(--bg);
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: linear-gradient(180deg, var(--panel), var(--bg));
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 34px 32px 26px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 26px;
}

.brand-name {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.2px;
}

.brand-sub {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.login-title {
  font-size: 24px;
  font-weight: 650;
  margin: 0 0 6px;
  letter-spacing: -0.3px;
}

.login-desc {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 24px;
}

.field {
  display: block;
  margin-bottom: 16px;
}

.field-label {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 7px;
  font-weight: 500;
}

.field input {
  width: 100%;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 15px;
  padding: 12px 13px;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field input::placeholder { color: #5a5a5a; }

.field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(46, 125, 255, 0.22);
}

.login-error {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.35);
  color: var(--danger);
  font-size: 13.5px;
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 16px;
}

.btn-primary {
  width: 100%;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: filter 0.15s, transform 0.05s;
}

.btn-primary:hover { filter: brightness(1.08); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.btn-primary[disabled] { opacity: 0.7; cursor: default; }

.spinner {
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: 50%;
  display: none;
  animation: spin 0.7s linear infinite;
}

.btn-primary.loading .spinner { display: inline-block; }
.btn-primary.loading .btn-label { opacity: 0.85; }

@keyframes spin { to { transform: rotate(360deg); } }

.login-foot {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 11.5px;
  text-align: center;
  line-height: 1.5;
}

@media (prefers-reduced-motion: reduce) {
  .spinner { animation: none; }
}