/* ===== METINGZ ULTRA PREMIUM LOGIN PAGE ===== */
/* ===== PROFESSIONAL BUSINESS STANDARD - LIGHT MODE ONLY ===== */

/* ===== DESIGN SYSTEM INHERITED FROM BASE.CSS ===== */
:root {
  /* Inherit base variables with login-specific overrides */
  --login-gradient-1: linear-gradient(135deg, #1a56db 0%, #2563eb 50%, #3b82f6 100%);
  --login-gradient-2: linear-gradient(135deg, #7e3af2 0%, #9061f9 50%, #a78bfa 100%);
  --login-gradient-3: linear-gradient(135deg, #059669 0%, #10b981 50%, #34d399 100%);
  --login-glow: 0 0 30px rgba(26, 86, 219, 0.15);
  
  /* Premium Colors */
  --login-primary: #1a56db;
  --login-primary-dark: #1e40af;
  --login-primary-light: #3b82f6;
  --login-primary-bg: #eff6ff;
  
  --login-secondary: #7e3af2;
  --login-secondary-dark: #6c2bd9;
  --login-secondary-light: #9061f9;
  
  --login-accent: #059669;
  --login-accent-dark: #047857;
  --login-accent-light: #10b981;
  
  /* Text Colors */
  --login-text-primary: #111827;
  --login-text-secondary: #374151;
  --login-text-muted: #6b7280;
  --login-text-light: #9ca3af;
  
  /* Background Colors */
  --login-bg-primary: #ffffff;
  --login-bg-secondary: #f8fafc;
  --login-bg-tertiary: #f1f5f9;
  --login-bg-card: #ffffff;
  
  /* Border Colors */
  --login-border: #e5e7eb;
  --login-border-light: #f3f4f6;
  --login-border-dark: #d1d5db;
  
  /* Status Colors */
  --login-success: #059669;
  --login-success-bg: #f0fdf4;
  --login-error: #dc2626;
  --login-error-bg: #fef2f2;
  --login-warning: #d97706;
  --login-warning-bg: #fef3c7;
  --login-info: #1a56db;
  --login-info-bg: #eff6ff;
  
  /* Shadows */
  --login-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --login-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --login-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --login-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --login-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --login-shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  
  /* Border Radius */
  --login-radius-sm: 0.375rem;
  --login-radius-md: 0.5rem;
  --login-radius-lg: 0.75rem;
  --login-radius-xl: 1rem;
  --login-radius-2xl: 1.5rem;
  --login-radius-full: 9999px;
  
  /* Spacing */
  --login-space-xs: 0.5rem;
  --login-space-sm: 0.75rem;
  --login-space-md: 1rem;
  --login-space-lg: 1.25rem;
  --login-space-xl: 1.5rem;
  --login-space-2xl: 2rem;
  --login-space-3xl: 2.5rem;
  --login-space-4xl: 3rem;
  
  /* Transitions */
  --login-transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --login-transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --login-transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --login-transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ===== BASE RESETS ===== */
.login-wrapper *,
.login-wrapper *::before,
.login-wrapper *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ===== LOGIN WRAPPER - PREMIUM BACKGROUND ===== */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--login-space-md);
  background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
  position: relative;
  overflow: hidden;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  isolation: isolate;
}

/* Premium Geometric Pattern Overlay */
.login-wrapper::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(26, 86, 219, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(126, 58, 242, 0.03) 0%, transparent 50%),
    repeating-linear-gradient(45deg, rgba(0, 0, 0, 0.01) 0px, rgba(0, 0, 0, 0.01) 1px, transparent 1px, transparent 10px);
  pointer-events: none;
  z-index: 0;
}

/* Premium Floating Shapes */
.background-animation {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 25s infinite ease-in-out;
}

.shape-1 {
  width: 400px;
  height: 400px;
  top: -100px;
  left: -100px;
  background: linear-gradient(145deg, #1a56db, #3b82f6);
  animation-delay: 0s;
}

.shape-2 {
  width: 500px;
  height: 500px;
  bottom: -150px;
  right: -150px;
  background: linear-gradient(145deg, #7e3af2, #9061f9);
  animation-delay: 5s;
}

.shape-3 {
  width: 300px;
  height: 300px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: linear-gradient(145deg, #059669, #10b981);
  animation-delay: 10s;
  opacity: 0.3;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(40px, -30px) scale(1.05);
  }
  66% {
    transform: translate(-30px, 40px) scale(0.95);
  }
}

/* Premium Grid Pattern */
.login-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(26, 86, 219, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 86, 219, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* ===== LOGIN CONTAINER - ULTRA PREMIUM ===== */
.login-container {
  width: 100%;
  max-width: 480px;
  background: var(--login-bg-card);
  border-radius: var(--login-radius-2xl);
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.15),
    0 0 0 1px rgba(26, 86, 219, 0.05);
  padding: var(--login-space-3xl);
  position: relative;
  z-index: 2;
  animation: containerAppear 0.8s var(--login-transition-bounce);
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.8);
}

@keyframes containerAppear {
  0% {
    opacity: 0;
    transform: translateY(30px) scale(0.96);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Premium Decorative Elements */
.login-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: var(--login-gradient-1);
  border-radius: var(--login-radius-2xl) var(--login-radius-2xl) 0 0;
}

.login-container::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--login-radius-2xl);
  background: linear-gradient(145deg, rgba(26, 86, 219, 0.2), rgba(126, 58, 242, 0.2));
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.5;
}

/* ===== LOGIN HEADER ===== */
.login-header {
  text-align: center;
  margin-bottom: var(--login-space-2xl);
}

.logo-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--login-space-sm);
}

.login-header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  background: var(--login-gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 var(--login-space-xs);
  letter-spacing: -1px;
  position: relative;
  display: inline-block;
}

.login-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--login-gradient-1);
  border-radius: var(--login-radius-full);
}

.login-subtitle {
  font-size: 1rem;
  color: var(--login-text-secondary);
  font-weight: 400;
  max-width: 320px;
  margin: var(--login-space-xs) auto 0;
  line-height: 1.6;
}

/* ===== MESSAGES CONTAINER - PREMIUM ===== */
.messages-container {
  margin-bottom: var(--login-space-xl);
}

.message {
  display: flex;
  align-items: center;
  padding: var(--login-space-md) var(--login-space-lg);
  border-radius: var(--login-radius-lg);
  margin-bottom: var(--login-space-sm);
  border-left: 4px solid transparent;
  background: var(--login-bg-secondary);
  box-shadow: var(--login-shadow-sm);
  animation: messageSlide 0.4s var(--login-transition-bounce);
  position: relative;
  overflow: hidden;
}

.message::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: translateX(-100%);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  100% {
    transform: translateX(100%);
  }
}

.message.success {
  background: var(--login-success-bg);
  border-left-color: var(--login-success);
}

.message.error {
  background: var(--login-error-bg);
  border-left-color: var(--login-error);
}

.message.warning {
  background: var(--login-warning-bg);
  border-left-color: var(--login-warning);
}

.message.info {
  background: var(--login-info-bg);
  border-left-color: var(--login-info);
}

.message-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--login-space-sm);
  font-size: 1rem;
}

.message.success .message-icon { color: var(--login-success); }
.message.error .message-icon { color: var(--login-error); }
.message.warning .message-icon { color: var(--login-warning); }
.message.info .message-icon { color: var(--login-info); }

.message-content {
  flex: 1;
}

.message-text {
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.5;
}

.message.success .message-text { color: var(--login-success); }
.message.error .message-text { color: var(--login-error); }
.message.warning .message-text { color: var(--login-warning); }
.message.info .message-text { color: var(--login-info); }

.message-close {
  background: transparent;
  border: none;
  color: var(--login-text-muted);
  cursor: pointer;
  padding: var(--login-space-xs);
  border-radius: var(--login-radius-sm);
  transition: all var(--login-transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
}

.message-close:hover {
  opacity: 1;
  background: rgba(0, 0, 0, 0.05);
  transform: scale(1.1);
}

@keyframes messageSlide {
  0% {
    opacity: 0;
    transform: translateX(-20px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ===== INVITE BANNER - PREMIUM ===== */
.invite-login-banner {
  background: linear-gradient(145deg, var(--login-info-bg), #ffffff);
  border-radius: var(--login-radius-xl);
  padding: var(--login-space-lg);
  margin-bottom: var(--login-space-xl);
  border: 1px solid rgba(26, 86, 219, 0.2);
  box-shadow: var(--login-shadow-md);
  position: relative;
  overflow: hidden;
}

.invite-login-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--login-gradient-1);
  animation: borderFlow 3s infinite;
}

@keyframes borderFlow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.invite-banner-content {
  display: flex;
  align-items: flex-start;
  gap: var(--login-space-lg);
}

.invite-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: var(--login-gradient-1);
  border-radius: var(--login-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: white;
  box-shadow: 0 8px 16px -4px rgba(26, 86, 219, 0.3);
  position: relative;
}

.invite-icon::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: inherit;
  opacity: 0.4;
  filter: blur(8px);
  z-index: -1;
}

.invite-details {
  flex: 1;
}

.invite-details h4 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--login-text-primary);
  margin: 0 0 var(--login-space-xs);
  line-height: 1.4;
}

.invite-details > p {
  font-size: 0.875rem;
  color: var(--login-text-secondary);
  margin: 0 0 var(--login-space-md);
  line-height: 1.6;
}

.invite-preview {
  background: white;
  border-radius: var(--login-radius-md);
  padding: var(--login-space-md);
  border: 1px solid var(--login-border);
  box-shadow: var(--login-shadow-sm);
}

.invite-preview p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--login-text-secondary);
  line-height: 1.6;
}

.invite-preview strong {
  color: var(--login-primary);
  font-weight: 600;
}

.invite-host {
  font-size: 0.813rem;
  color: var(--login-text-muted);
  margin-top: var(--login-space-xs) !important;
  font-style: italic;
}

/* ===== LOGIN FORM - PREMIUM ===== */
.login-form {
  margin-bottom: var(--login-space-xl);
}

.form-group {
  margin-bottom: var(--login-space-xl);
  position: relative;
}

.form-label {
  display: flex;
  align-items: center;
  gap: var(--login-space-xs);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--login-text-primary);
  margin-bottom: var(--login-space-xs);
  transition: all var(--login-transition-fast);
}

.form-label i {
  color: var(--login-primary);
  font-size: 0.875rem;
  width: 18px;
  text-align: center;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.form-input {
  width: 100%;
  padding: var(--login-space-md) var(--login-space-lg);
  font-size: 1rem;
  background: white;
  border: 2px solid var(--login-border);
  border-radius: var(--login-radius-lg);
  color: var(--login-text-primary);
  transition: all var(--login-transition-base);
  outline: none;
  font-family: inherit;
  padding-right: 48px;
  box-shadow: var(--login-shadow-sm);
}

.form-input::placeholder {
  color: var(--login-text-light);
  opacity: 0.7;
  font-weight: 400;
}

.form-input:hover {
  border-color: var(--login-primary);
  background: white;
  box-shadow: 0 0 0 4px rgba(26, 86, 219, 0.05);
}

.form-input:focus {
  border-color: var(--login-primary);
  background: white;
  box-shadow: 
    0 0 0 4px rgba(26, 86, 219, 0.1),
    var(--login-shadow-md);
  transform: translateY(-1px);
}

.input-wrapper.focused .form-input {
  border-color: var(--login-primary);
  box-shadow: 0 0 0 4px rgba(26, 86, 219, 0.1);
}

/* Password toggle button - SINGLE EYE ICON */
.password-toggle {
  position: absolute;
  right: var(--login-space-sm);
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--login-text-muted);
  cursor: pointer;
  padding: var(--login-space-xs);
  border-radius: var(--login-radius-sm);
  transition: all var(--login-transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  z-index: 2;
}

.password-toggle:hover {
  color: var(--login-primary);
  background: rgba(26, 86, 219, 0.05);
  transform: translateY(-50%) scale(1.05);
}

.password-toggle:active {
  transform: translateY(-50%) scale(0.95);
}

.password-toggle i {
  font-size: 1.125rem;
  pointer-events: none;
}

/* Form validation states */
.form-group.valid .form-input {
  border-color: var(--login-success);
  background: white;
}

.form-group.invalid .form-input {
  border-color: var(--login-error);
  background: white;
}

.input-feedback {
  font-size: 0.75rem;
  margin-top: var(--login-space-xs);
  min-height: 20px;
  font-weight: 500;
  padding-left: var(--login-space-xs);
  transition: all var(--login-transition-fast);
}

.form-group.valid .input-feedback {
  color: var(--login-success);
}

.form-group.invalid .input-feedback {
  color: var(--login-error);
}

/* ===== FORM OPTIONS - PREMIUM ===== */
.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--login-space-xl);
  flex-wrap: wrap;
  gap: var(--login-space-md);
}

/* Custom checkbox - Premium */
.checkbox-container {
  display: flex;
  align-items: center;
  position: relative;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--login-text-secondary);
  user-select: none;
  transition: all var(--login-transition-fast);
  gap: var(--login-space-sm);
}

.checkbox-container:hover {
  color: var(--login-text-primary);
}

.checkbox-container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  background: white;
  border: 2px solid var(--login-border);
  border-radius: 6px;
  transition: all var(--login-transition-base);
  position: relative;
  box-shadow: var(--login-shadow-sm);
}

.checkbox-container:hover .checkmark {
  border-color: var(--login-primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

.checkbox-container input:checked ~ .checkmark {
  background: var(--login-primary);
  border-color: var(--login-primary);
  animation: checkPop 0.3s var(--login-transition-bounce);
}

@keyframes checkPop {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

.checkbox-container input:checked ~ .checkmark::after {
  content: '';
  position: absolute;
  width: 6px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-2px, -1px);
}

/* Forgot password link - Premium */
.forgot-password {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--login-primary);
  text-decoration: none;
  transition: all var(--login-transition-fast);
  position: relative;
  padding: var(--login-space-xs) 0;
}

.forgot-password::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--login-gradient-1);
  transition: width var(--login-transition-base);
}

.forgot-password:hover {
  color: var(--login-primary-dark);
}

.forgot-password:hover::after {
  width: 100%;
}

/* ===== SUBMIT BUTTON - ULTRA PREMIUM ===== */
.submit-btn {
  width: 100%;
  padding: var(--login-space-lg);
  background: var(--login-gradient-1);
  color: white;
  border: none;
  border-radius: var(--login-radius-lg);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--login-transition-base);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--login-space-sm);
  margin-bottom: var(--login-space-xl);
  box-shadow: 
    0 8px 20px -4px rgba(26, 86, 219, 0.4),
    inset 0 1px 2px rgba(255, 255, 255, 0.3);
  letter-spacing: 0.5px;
  isolation: isolate;
}

.submit-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
  z-index: -1;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 12px 28px -4px rgba(26, 86, 219, 0.5),
    inset 0 1px 3px rgba(255, 255, 255, 0.4);
}

.submit-btn:hover::before {
  transform: translateX(100%);
}

.submit-btn:active {
  transform: translateY(0);
  box-shadow: 
    0 4px 12px -4px rgba(26, 86, 219, 0.4),
    inset 0 1px 2px rgba(255, 255, 255, 0.2);
}

.submit-btn.loading {
  pointer-events: none;
  opacity: 0.9;
}

.submit-btn.loading .btn-text {
  opacity: 0;
}

.submit-btn.loading .btn-loader {
  opacity: 1;
}

.btn-text {
  display: flex;
  align-items: center;
  gap: var(--login-space-sm);
  transition: opacity var(--login-transition-fast);
}

.btn-text i {
  font-size: 1.125rem;
  transition: transform var(--login-transition-base);
}

.submit-btn:hover .btn-text i {
  transform: translateX(4px);
}

.btn-loader {
  position: absolute;
  opacity: 0;
  transition: opacity var(--login-transition-fast);
}

.loader {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ===== DIVIDER - PREMIUM ===== */
.divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin-bottom: var(--login-space-xl);
  color: var(--login-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  gap: var(--login-space-md);
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--login-border), transparent);
}

/* ===== REGISTER LINK - PREMIUM ===== */
.alternative-login {
  margin-bottom: var(--login-space-xl);
}

.register-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--login-space-sm);
  width: 100%;
  padding: var(--login-space-lg);
  background: white;
  border: 2px solid var(--login-border);
  border-radius: var(--login-radius-lg);
  color: var(--login-text-primary);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--login-transition-base);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.register-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(26, 86, 219, 0.05), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
  z-index: -1;
}

.register-link:hover {
  border-color: var(--login-primary);
  background: white;
  transform: translateY(-2px);
  box-shadow: var(--login-shadow-md);
  color: var(--login-primary);
}

.register-link:hover::before {
  transform: translateX(100%);
}

.register-link i {
  color: var(--login-primary);
  font-size: 1.125rem;
  transition: transform var(--login-transition-base);
}

.register-link:hover i {
  transform: translateX(4px);
}

/* ===== SOCIAL LOGIN - PREMIUM ===== */
.social-login {
  margin-bottom: var(--login-space-xl);
}

.social-divider {
  text-align: center;
  color: var(--login-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--login-space-lg);
  position: relative;
}

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

.social-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--login-space-sm);
  padding: var(--login-space-md);
  border: 2px solid var(--login-border);
  border-radius: var(--login-radius-lg);
  background: white;
  color: var(--login-text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--login-transition-base);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.social-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
  z-index: -1;
}

.social-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--login-shadow-md);
}

.social-btn:hover::before {
  transform: translateX(100%);
}

.google-btn:hover {
  border-color: #db4437;
  color: #db4437;
  background: #fff;
}

.google-btn:hover i {
  color: #db4437;
}

.linkedin-btn:hover {
  border-color: #0077b5;
  color: #0077b5;
  background: #fff;
}

.linkedin-btn:hover i {
  color: #0077b5;
}

.social-btn i {
  font-size: 1.125rem;
  transition: all var(--login-transition-base);
}

/* ===== SECURITY NOTICE - PREMIUM ===== */
.security-notice {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--login-space-sm);
  font-size: 0.813rem;
  color: var(--login-text-muted);
  text-align: center;
  padding: var(--login-space-md);
  background: linear-gradient(145deg, var(--login-bg-secondary), white);
  border-radius: var(--login-radius-lg);
  border: 1px solid var(--login-border);
  box-shadow: var(--login-shadow-sm);
}

.security-notice i {
  color: var(--login-success);
  font-size: 1rem;
  animation: shieldPulse 2s infinite;
}

@keyframes shieldPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

/* ===== RESPONSIVE DESIGN - 200% OPTIMIZED ===== */

/* Ultra Wide (4K) */
@media (min-width: 2560px) {
  .login-wrapper {
    padding: var(--login-space-4xl);
  }
  
  .login-container {
    max-width: 600px;
    padding: var(--login-space-4xl);
  }
  
  .login-header h2 {
    font-size: 3rem;
  }
  
  .login-subtitle {
    font-size: 1.25rem;
    max-width: 400px;
  }
  
  .form-input {
    padding: var(--login-space-xl) var(--login-space-2xl);
    font-size: 1.125rem;
  }
  
  .submit-btn,
  .register-link {
    padding: var(--login-space-xl);
    font-size: 1.125rem;
  }
  
  .shape-1 { width: 800px; height: 800px; }
  .shape-2 { width: 1000px; height: 1000px; }
  .shape-3 { width: 600px; height: 600px; }
}

/* Large Desktops (1440px - 1919px) */
@media (min-width: 1440px) and (max-width: 1919px) {
  .login-container {
    max-width: 520px;
    padding: var(--login-space-3xl);
  }
  
  .login-header h2 {
    font-size: 2.5rem;
  }
}

/* Standard Desktops (1280px - 1439px) */
@media (min-width: 1280px) and (max-width: 1439px) {
  .login-container {
    max-width: 480px;
  }
}

/* Small Desktops / Laptops (1024px - 1279px) */
@media (min-width: 1024px) and (max-width: 1279px) {
  .login-container {
    max-width: 440px;
    padding: var(--login-space-2xl);
  }
  
  .login-header h2 {
    font-size: 2rem;
  }
  
  .shape-1 { width: 300px; height: 300px; }
  .shape-2 { width: 400px; height: 400px; }
  .shape-3 { width: 250px; height: 250px; }
}

/* Tablets Landscape (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
  .login-wrapper {
    padding: var(--login-space-xl);
  }
  
  .login-container {
    max-width: 420px;
    padding: var(--login-space-2xl);
  }
  
  .login-header h2 {
    font-size: 1.875rem;
  }
  
  .shape-1,
  .shape-2,
  .shape-3 {
    opacity: 0.3;
  }
  
  .shape-1 { width: 250px; height: 250px; }
  .shape-2 { width: 350px; height: 350px; }
  .shape-3 { width: 200px; height: 200px; }
}

/* Tablets Portrait (640px - 767px) */
@media (min-width: 640px) and (max-width: 767px) {
  .login-wrapper {
    padding: var(--login-space-lg);
  }
  
  .login-container {
    max-width: 400px;
    padding: var(--login-space-xl);
  }
  
  .login-header h2 {
    font-size: 1.75rem;
  }
  
  .background-animation {
    opacity: 0.2;
  }
  
  .social-buttons {
    flex-direction: row;
  }
}

/* Large Mobile (480px - 639px) */
@media (min-width: 480px) and (max-width: 639px) {
  .login-wrapper {
    padding: var(--login-space-md);
  }
  
  .login-container {
    padding: var(--login-space-xl);
    border-radius: var(--login-radius-xl);
    max-width: 100%;
  }
  
  .login-header h2 {
    font-size: 1.625rem;
  }
  
  .login-subtitle {
    font-size: 0.938rem;
  }
  
  .background-animation {
    display: none;
  }
  
  .form-options {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--login-space-md);
  }
  
  .social-buttons {
    flex-direction: column;
  }
  
  .social-btn {
    padding: var(--login-space-lg);
  }
  
  .invite-banner-content {
    flex-direction: column;
    text-align: center;
  }
  
  .invite-icon {
    align-self: center;
  }
}

/* Standard Mobile (360px - 479px) */
@media (min-width: 360px) and (max-width: 479px) {
  .login-wrapper {
    padding: var(--login-space-sm);
  }
  
  .login-container {
    padding: var(--login-space-lg);
    border-radius: var(--login-radius-lg);
  }
  
  .login-header h2 {
    font-size: 1.5rem;
  }
  
  .login-subtitle {
    font-size: 0.875rem;
  }
  
  .background-animation {
    display: none;
  }
  
  .messages-container {
    margin-bottom: var(--login-space-md);
  }
  
  .message {
    padding: var(--login-space-sm);
    font-size: 0.813rem;
  }
  
  .invite-login-banner {
    padding: var(--login-space-md);
  }
  
  .invite-banner-content {
    flex-direction: column;
    text-align: center;
    gap: var(--login-space-sm);
  }
  
  .invite-icon {
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
  }
  
  .form-group {
    margin-bottom: var(--login-space-lg);
  }
  
  .form-input {
    padding: var(--login-space-sm) var(--login-space-md);
    font-size: 0.938rem;
  }
  
  .password-toggle {
    width: 32px;
    height: 32px;
  }
  
  .form-options {
    margin-bottom: var(--login-space-lg);
  }
  
  .checkbox-container {
    font-size: 0.813rem;
  }
  
  .forgot-password {
    font-size: 0.813rem;
  }
  
  .submit-btn,
  .register-link {
    padding: var(--login-space-md);
    font-size: 0.938rem;
    margin-bottom: var(--login-space-lg);
  }
  
  .divider {
    margin-bottom: var(--login-space-lg);
    font-size: 0.813rem;
  }
  
  .social-login {
    margin-bottom: var(--login-space-lg);
  }
  
  .social-btn {
    padding: var(--login-space-md);
    font-size: 0.813rem;
  }
  
  .security-notice {
    padding: var(--login-space-sm);
    font-size: 0.75rem;
    flex-direction: column;
    text-align: center;
  }
  
  .login-wrapper::before,
  .login-wrapper::after {
    display: none;
  }
}

/* Small Mobile (320px - 359px) */
@media (min-width: 320px) and (max-width: 359px) {
  .login-wrapper {
    padding: var(--login-space-xs);
  }
  
  .login-container {
    padding: var(--login-space-md);
    border-radius: var(--login-radius-md);
  }
  
  .login-header {
    margin-bottom: var(--login-space-lg);
  }
  
  .login-header h2 {
    font-size: 1.375rem;
  }
  
  .login-header h2::after {
    width: 40px;
    height: 2px;
  }
  
  .login-subtitle {
    font-size: 0.813rem;
  }
  
  .background-animation {
    display: none;
  }
  
  .messages-container {
    margin-bottom: var(--login-space-sm);
  }
  
  .message {
    padding: var(--login-space-xs) var(--login-space-sm);
    font-size: 0.75rem;
  }
  
  .message-icon {
    width: 20px;
    height: 20px;
    font-size: 0.813rem;
  }
  
  .invite-login-banner {
    display: none;
  }
  
  .form-group {
    margin-bottom: var(--login-space-md);
  }
  
  .form-label {
    font-size: 0.813rem;
  }
  
  .form-input {
    padding: var(--login-space-xs) var(--login-space-sm);
    font-size: 0.875rem;
  }
  
  .password-toggle {
    width: 32px;
    height: 32px;
  }
  
  .form-options {
    margin-bottom: var(--login-space-lg);
  }
  
  .checkbox-container {
    font-size: 0.813rem;
  }
  
  .forgot-password {
    font-size: 0.813rem;
  }
  
  .submit-btn,
  .register-link {
    padding: var(--login-space-sm);
    font-size: 0.875rem;
    margin-bottom: var(--login-space-lg);
  }
  
  .divider {
    margin-bottom: var(--login-space-lg);
    font-size: 0.813rem;
  }
  
  .social-login {
    margin-bottom: var(--login-space-lg);
  }
  
  .social-btn {
    padding: var(--login-space-sm);
    font-size: 0.813rem;
  }
  
  .security-notice {
    display: none;
  }
  
  .shape-1,
  .shape-2,
  .shape-3 {
    display: none;
  }
}

/* Extra Small Mobile (below 320px) */
@media (max-width: 319px) {
  .login-wrapper {
    padding: var(--login-space-xs);
  }
  
  .login-container {
    padding: var(--login-space-sm);
    border-radius: var(--login-radius-sm);
  }
  
  .login-header h2 {
    font-size: 1.25rem;
  }
  
  .login-subtitle {
    font-size: 0.75rem;
  }
  
  .background-animation,
  .invite-login-banner,
  .security-notice,
  .social-login,
  .shape-1,
  .shape-2,
  .shape-3 {
    display: none;
  }
  
  .form-group {
    margin-bottom: var(--login-space-sm);
  }
  
  .form-input {
    padding: var(--login-space-xs);
    font-size: 0.813rem;
  }
  
  .form-options {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--login-space-xs);
    margin-bottom: var(--login-space-md);
  }
  
  .submit-btn,
  .register-link {
    padding: var(--login-space-xs);
    font-size: 0.813rem;
  }
  
  .divider {
    margin-bottom: var(--login-space-md);
    font-size: 0.75rem;
  }
}

/* ===== ACCESSIBILITY & PERFORMANCE ===== */

/* Focus styles for keyboard navigation */
.form-input:focus-visible,
.submit-btn:focus-visible,
.register-link:focus-visible,
.social-btn:focus-visible,
.forgot-password:focus-visible,
.checkbox-container input:focus-visible + .checkmark {
  outline: 3px solid var(--login-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 6px rgba(26, 86, 219, 0.2);
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .login-container {
    border: 2px solid var(--login-text-primary);
  }
  
  .form-input {
    border-width: 2px;
  }
  
  .submit-btn,
  .register-link,
  .social-btn {
    border: 2px solid currentColor;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .shape,
  .particle {
    animation: none !important;
  }
  
  .submit-btn::before,
  .register-link::before,
  .social-btn::before,
  .message::before {
    display: none !important;
  }
  
  .submit-btn:hover,
  .register-link:hover,
  .social-btn:hover {
    transform: none !important;
  }
  
  .invite-login-banner {
    animation: none !important;
  }
}

/* ===== CUSTOM SCROLLBAR ===== */
.login-container::-webkit-scrollbar {
  width: 8px;
}

.login-container::-webkit-scrollbar-track {
  background: transparent;
  border-radius: var(--login-radius-full);
}

.login-container::-webkit-scrollbar-thumb {
  background: var(--login-border);
  border-radius: var(--login-radius-full);
  transition: background var(--login-transition-fast);
}

.login-container::-webkit-scrollbar-thumb:hover {
  background: var(--login-primary);
}

/* ===== PRINT STYLES ===== */
@media print {
  .login-wrapper {
    background: white !important;
    padding: var(--login-space-md) !important;
  }
  
  .background-animation,
  .shape,
  .particle,
  .login-wrapper::before,
  .login-wrapper::after {
    display: none !important;
  }
  
  .login-container {
    box-shadow: none !important;
    border: 2px solid #ddd !important;
    background: white !important;
    padding: var(--login-space-xl) !important;
  }
  
  .submit-btn,
  .register-link,
  .social-btn {
    background: #f5f5f5 !important;
    color: black !important;
    border: 1px solid #ddd !important;
    box-shadow: none !important;
  }
  
  .forgot-password {
    color: black !important;
  }
  
  .security-notice {
    border: 1px solid #ddd !important;
  }
}

/* ===== PERFORMANCE OPTIMIZATIONS ===== */
.login-container,
.form-input,
.submit-btn,
.register-link,
.social-btn {
  will-change: transform, opacity;
  backface-visibility: hidden;
  transform: translateZ(0);
}

/* ===== END OF ULTRA PREMIUM LOGIN.CSS ===== */