* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 15% 10%, color-mix(in srgb, var(--accent) 16%, var(--page)) 0%, transparent 55%),
    radial-gradient(circle at 85% 90%, color-mix(in srgb, var(--series-1) 14%, var(--page)) 0%, transparent 55%),
    var(--page);
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
  padding: 24px;
}

/* Decorative, content-free background */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.bg-decor::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--gridline) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.5;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 70%);
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
}
.blob-1 {
  width: 460px;
  height: 460px;
  top: -140px;
  left: -120px;
  background: var(--accent-soft);
}
.blob-2 {
  width: 420px;
  height: 420px;
  bottom: -160px;
  right: -100px;
  background: var(--series-1);
  opacity: 0.24;
}

.login-card {
  position: relative;
  z-index: 1;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-2);
  padding: 40px 36px 32px;
  width: 100%;
  max-width: 420px;
}

.brand {
  display: flex;
  justify-content: center;
  margin-bottom: 30px;
}
.brand-logo {
  height: clamp(72px, 24vw, 108px);
  width: auto;
  max-width: 100%;
  display: block;
  background: #fff;
  padding: 14px 22px;
  border-radius: 12px;
  box-shadow: var(--shadow-1);
}

.login-card h1 {
  font-size: 21px;
  font-weight: 700;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
.login-card p.sub {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0 0 24px;
}

.erro {
  color: var(--status-critical);
  font-size: 12.5px;
  margin-bottom: 4px;
  min-height: 0;
}
.erro:not(:empty) {
  background: color-mix(in srgb, var(--status-critical) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--status-critical) 25%, transparent);
  border-radius: 8px;
  padding: 9px 12px;
  margin-bottom: 16px;
}

.field { margin-bottom: 18px; }
label {
  display: block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 7px;
}

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.input-icon {
  position: absolute;
  left: 12px;
  width: 17px;
  height: 17px;
  color: var(--text-muted);
  pointer-events: none;
}
input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 10px 12px 10px 38px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--page);
  color: var(--text-primary);
  font-size: 13.5px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
input[type="text"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
input::placeholder { color: var(--text-muted); }

.toggle-pass {
  position: absolute;
  right: 8px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  display: flex;
  border-radius: 6px;
}
.toggle-pass:hover { color: var(--text-secondary); background: var(--surface-2); }
.toggle-pass svg { width: 17px; height: 17px; }

.submit-btn {
  width: 100%;
  margin-top: 6px;
  padding: 11px;
  border: none;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--series-1));
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: opacity 0.15s ease, transform 0.1s ease;
}
.submit-btn:hover { opacity: 0.92; }
.submit-btn:active { transform: scale(0.99); }
.submit-btn:disabled { cursor: default; opacity: 0.75; }

.btn-spinner {
  display: none;
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.submit-btn.loading .btn-label { opacity: 0.85; }
.submit-btn.loading .btn-spinner { display: inline-block; }

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

.footer-note {
  text-align: center;
  font-size: 11.5px;
  color: var(--text-muted);
  margin: 24px 0 0;
}