.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--bg);
  padding: var(--space-6);
}

.login-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  background:
    radial-gradient(circle at 20% 30%, var(--accent-200) 0%, transparent 35%),
    radial-gradient(circle at 80% 70%, var(--accent-100) 0%, transparent 40%),
    radial-gradient(circle at 50% 50%, var(--accent-50) 0%, transparent 60%);
}
[data-theme="dark"] .login-bg {
  background:
    radial-gradient(circle at 20% 30%, rgba(20, 184, 166, 0.25) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(13, 148, 136, 0.20) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(15, 23, 42, 0.6) 0%, transparent 70%),
    var(--bg);
}

.login-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(20, 184, 166, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 184, 166, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.5;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.bubble {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-300), var(--accent-500));
  opacity: 0.20;
  filter: blur(2px);
  pointer-events: none;
  animation: vaia-float 18s ease-in-out infinite;
}
[data-theme="dark"] .bubble { opacity: 0.30; }

.bubble--1 { width: 320px; height: 320px; top: -10%; left: -8%;  animation-delay: 0s;   animation-duration: 18s; }
.bubble--2 { width: 200px; height: 200px; top: 60%;  left: -5%;  animation-delay: -4s;  animation-duration: 22s; }
.bubble--3 { width: 280px; height: 280px; top: -5%;  right: -8%; animation-delay: -8s;  animation-duration: 20s; }
.bubble--4 { width: 160px; height: 160px; top: 70%;  right: -3%; animation-delay: -2s;  animation-duration: 16s; }
.bubble--5 { width: 120px; height: 120px; top: 35%;  left: 45%;  animation-delay: -10s; animation-duration: 24s; }

.login-card {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 420px;
  padding: var(--space-8);
  background: var(--glass-bg);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  animation: vaia-scale-in 500ms var(--easing-spring) both;
  transition: box-shadow var(--transition-slow) var(--easing-smooth);
}
.login-card:hover {
  box-shadow: var(--shadow-2xl), 0 0 40px var(--accent-glow), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}

.login-header {
  text-align: center;
  margin-bottom: var(--space-7);
}
.login-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--accent-400), var(--accent-600));
  color: var(--text-invert);
  font-size: 1.75rem;
  margin-bottom: var(--space-4);
  box-shadow: 0 8px 24px rgba(20, 184, 166, 0.35), 0 0 0 4px var(--accent-glow);
  animation: vaia-glow-pulse 3s ease-in-out infinite;
}
.login-title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--text-strong);
  margin: 0;
  animation: vaia-slide-up 500ms var(--easing-smooth) 80ms both;
}
.login-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
  animation: vaia-slide-up 500ms var(--easing-smooth) 160ms both;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.login-field {
  position: relative;
  animation: vaia-slide-up 500ms var(--easing-smooth) 240ms both;
}
.login-field:nth-child(2) { animation-delay: 320ms; }
.login-field:nth-child(3) { animation-delay: 400ms; }

.login-input {
  width: 100%;
  padding: 14px var(--space-4) 14px 44px;
  font-family: inherit;
  font-size: var(--text-sm);
  color: var(--text);
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base) var(--easing-smooth),
              box-shadow var(--transition-base) var(--easing-smooth),
              background-color var(--transition-base) var(--easing-smooth);
}
.login-input:hover { border-color: var(--border-strong); }
.login-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
  background: var(--surface);
}

.login-input-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-soft);
  pointer-events: none;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}
.login-input:focus ~ .login-input-icon { color: var(--accent); }

.pass-toggle {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--text-soft);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}
.pass-toggle:hover { color: var(--accent); background: var(--bg-subtle); }

.login-actions {
  animation: vaia-slide-up 500ms var(--easing-smooth) 480ms both;
}
.login-btn {
  width: 100%;
  min-height: 48px;
  padding: 0 var(--space-5);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--text-invert);
  background: linear-gradient(135deg, var(--accent-500), var(--accent-400));
  background-size: 200% 200%;
  background-position: 0% 0%;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast) var(--easing-spring),
              background-position var(--transition-slow) var(--easing-smooth),
              box-shadow var(--transition-base) var(--easing-smooth);
  box-shadow: 0 4px 14px rgba(20, 184, 166, 0.30), 0 1px 0 rgba(255, 255, 255, 0.20) inset;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}
.login-btn:hover:not(:disabled) {
  background-position: 100% 100%;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(20, 184, 166, 0.45), 0 0 0 4px var(--accent-glow), 0 1px 0 rgba(255, 255, 255, 0.20) inset;
}
.login-btn:active:not(:disabled) { transform: translateY(0) scale(0.98); }
.login-btn:disabled { opacity: 0.7; cursor: not-allowed; }
.login-btn .btn-spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: vaia-spin 0.7s linear infinite;
  display: none;
}
.login-btn.is-loading .btn-spinner { display: inline-block; }
.login-btn.is-loading .btn-label { opacity: 0.7; }

.login-error {
  font-size: var(--text-xs);
  color: var(--state-danger);
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  display: none;
  animation: vaia-slide-down 280ms var(--easing-spring) both;
}
.login-error.is-visible { display: flex; align-items: center; gap: var(--space-2); }

.login-footer {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--text-soft);
}

@media (max-width: 480px) {
  .login-page { padding: var(--space-4); }
  .login-card { padding: var(--space-6); }
  .login-logo { width: 56px; height: 56px; font-size: 1.5rem; }
  .login-title { font-size: var(--text-xl); }
}