/*
 * Login Page - Industrial Brutalist
 * Asymmetric split layout with monolithic branding
 */

/* ========================================
   LAYOUT - Split Screen
   ======================================== */

.login-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--bg-primary);
}

@media (max-width: 900px) {
  .login-page {
    grid-template-columns: 1fr;
  }
  .login-brand {
    display: none;
  }
}

/* ========================================
   LEFT PANEL - Brand / Visual
   ======================================== */

.login-brand {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: var(--bg-secondary);
  overflow: hidden;
}

/* Grid background texture */
.login-brand::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

/* Accent glow orb */
.login-brand::after {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-glow-strong) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(60px);
  animation: pulse-glow 8s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.1); }
}

.login-brand-content {
  position: relative;
  z-index: 1;
  text-align: center;
  animation: fade-up 0.8s var(--ease-out) both;
}

.login-logo {
  font-family: var(--font-mono);
  font-size: 5rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin: 0;
  line-height: 1;
  text-transform: lowercase;
}

.login-logo-accent {
  color: var(--accent-primary);
}

.login-tagline {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-lg);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* Version badge */
.login-version {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  animation: fade-up 0.8s var(--ease-out) 0.4s both;
}

/* ========================================
   RIGHT PANEL - Form
   ======================================== */

.login-form-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--space-2xl);
  background: var(--bg-primary);
  position: relative;
}

/* Subtle corner accent */
.login-form-panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
}

.login-form-container {
  width: 100%;
  max-width: 360px;
}

/* Header */
.login-header {
  margin-bottom: var(--space-2xl);
  animation: fade-up 0.6s var(--ease-out) 0.1s both;
}

.login-title {
  font-family: var(--font-sans);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--space-xs) 0;
}

.login-subtitle {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin: 0;
}

/* Mobile logo (hidden on desktop) */
.login-mobile-logo {
  display: none;
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-xl);
  text-align: center;
}

.login-mobile-logo span {
  color: var(--accent-primary);
}

@media (max-width: 900px) {
  .login-mobile-logo {
    display: block;
    animation: fade-up 0.5s var(--ease-out) both;
  }
}

/* ========================================
   SSO BUTTON - Hero Element
   ======================================== */

.login-sso {
  animation: fade-up 0.6s var(--ease-out) 0.2s both;
}

.login-sso-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 600;
  color: white;
  background: var(--accent-primary);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-normal);
  box-shadow:
    0 0 0 0 var(--accent-glow),
    var(--shadow-md);
}

.login-sso-btn:hover {
  background: var(--accent-secondary);
  box-shadow:
    0 0 30px var(--accent-glow-strong),
    var(--shadow-lg);
  transform: translateY(-1px);
}

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

.login-sso-icon {
  width: 20px;
  height: 20px;
  opacity: 0.9;
}

/* ========================================
   DIVIDER
   ======================================== */

.login-divider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: var(--space-xl) 0;
  animation: fade-up 0.6s var(--ease-out) 0.3s both;
}

.login-divider::before,
.login-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
}

.login-divider span {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--font-mono);
}

/* ========================================
   FORM
   ======================================== */

.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  animation: fade-up 0.6s var(--ease-out) 0.35s both;
}

/* Field styling - more refined */
.login-field {
  position: relative;
}

.login-field label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.login-field input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-normal);
  box-sizing: border-box;
}

.login-field input:hover {
  border-color: var(--border-default);
}

.login-field input:focus {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-focus);
  background: var(--bg-tertiary);
}

.login-field input::placeholder {
  color: var(--text-muted);
}

/* Submit button - secondary treatment */
.login-submit {
  margin-top: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.login-submit:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
  background: var(--bg-hover);
}

.login-submit:active {
  background: var(--bg-active);
}

/* ========================================
   ERROR MESSAGE
   ======================================== */

.login-error {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  color: var(--error-text);
  background: var(--error-muted);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  animation: shake 0.4s var(--ease-out);
}

.login-error::before {
  content: "!";
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  font-size: 11px;
  font-weight: 700;
  color: white;
  background: var(--error);
  border-radius: 50%;
  flex-shrink: 0;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   FOOTER
   ======================================== */

.login-footer {
  position: absolute;
  bottom: var(--space-lg);
  font-size: var(--text-xs);
  color: var(--text-muted);
  animation: fade-up 0.6s var(--ease-out) 0.5s both;
}

.login-footer a {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.login-footer a:hover {
  color: var(--accent-primary);
}

/* ========================================
   DEV MODE
   ======================================== */

.login-dev-mode {
  animation: fade-up 0.6s var(--ease-out) 0.2s both;
}

.login-dev-warning {
  background: var(--warning);
  color: var(--bg-primary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 600;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-lg);
}

.login-dev-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.login-dev-buttons form {
  display: contents;
}

.login-dev-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-left-width: 4px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.login-dev-btn:hover {
  background: var(--bg-hover);
  transform: translateX(4px);
}

.login-dev-btn:active {
  background: var(--bg-active);
  transform: translateX(2px);
}

.login-dev-admin {
  border-left-color: var(--error);
}

.login-dev-admin:hover {
  border-left-color: var(--error);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.2);
}

.login-dev-editor {
  border-left-color: var(--warning);
}

.login-dev-editor:hover {
  border-left-color: var(--warning);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.2);
}

.login-dev-viewer {
  border-left-color: var(--success);
}

.login-dev-viewer:hover {
  border-left-color: var(--success);
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.2);
}