/* ── Login Page ── */

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

/* Subtle noise texture overlay */
.login-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* Gradient orbs in background */
.login-page::after {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.12) 0%, transparent 70%);
  top: -200px;
  right: -100px;
  pointer-events: none;
  z-index: 0;
}

.login-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 400px;
  margin: var(--space-xl);
  animation: loginSlideUp 0.6s var(--ease-out) both;
}

@keyframes loginSlideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-brand {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.login-brand__logo {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 800;
  color: white;
  letter-spacing: -1.5px;
  margin-bottom: var(--space-sm);
}

.login-brand__logo span {
  color: var(--indigo-light);
}

.login-brand__tagline {
  color: var(--ink-faded);
  font-size: var(--text-sm);
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 500;
}

.login-form {
  background: var(--surface);
  border-radius: var(--radius-xl);
  padding: var(--space-3xl);
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.login-form__title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--space-xl);
}

.form-field {
  margin-bottom: var(--space-lg);
}

.form-field__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--ink-muted);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.3px;
}

.form-field__input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--paper);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--ink);
  transition: border-color var(--duration-base) var(--ease-out),
    background var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

.form-field__input::placeholder {
  color: var(--ink-faded);
}

.form-field__input:focus {
  background: white;
  border-color: var(--indigo);
  box-shadow: var(--shadow-glow-indigo);
}

.login-btn {
  width: 100%;
  padding: var(--space-md) var(--space-xl);
  background: var(--indigo);
  color: white;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  letter-spacing: 0.3px;
  transition: background var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
  position: relative;
  overflow: hidden;
  margin-top: var(--space-sm);
}

.login-btn:hover {
  background: var(--indigo-deep);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.login-btn:active {
  transform: translateY(0);
}

.login-btn--loading {
  pointer-events: none;
  opacity: 0.8;
}

.login-btn--loading::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  top: 50%;
  left: 50%;
  margin: -9px 0 0 -9px;
}

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

.login-error {
  margin-top: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: var(--rose-pale);
  color: var(--rose);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  text-align: center;
  display: none;
  animation: shakeError 0.4s var(--ease-out);
}

.login-error--visible {
  display: block;
}

@keyframes shakeError {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}