:root {
  --color-primary: #3B82F6;
  --color-primary-dark: #2563EB;
  --color-primary-light: #DBEAFE;
  --color-text-primary: #0A0A0A;
  --color-text-secondary: #525252;
  --color-text-tertiary: #A3A3A3;
  --color-background: #FFFFFF;
  --color-surface: #F5F5F5;
  --color-border: #E5E5E5;
  --color-border-focus: #3B82F6;
  --color-success: #10b981;
  --color-error: #ef4444;

  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 2.5rem;
  --spacing-3xl: 3rem;

  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-radius-2xl: 1.5rem;

  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--color-text-primary);
  background: var(--color-surface);
  line-height: var(--line-height-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

.login-container {
  display: flex;
  min-height: 100vh;
  width: 100%;
}

.login-left {
  flex: 1;
  background: #0A0A0A;
  position: relative;
  overflow: hidden;
}

.login-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.login-image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 10, 0.4);
  z-index: 2;
}

.login-brand {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: var(--spacing-2xl);
}

.brand-logo-img {
  height: 56px;
  width: auto;
  filter: brightness(0) saturate(100%) invert(8%) sepia(0%) saturate(0%) hue-rotate(180deg) brightness(92%) contrast(91%);
}

.login-footer {
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
  text-align: center;
}

.login-right {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
  background: var(--color-background);
}

.login-form-container {
  width: 100%;
  max-width: 480px;
}

.login-header {
  margin-bottom: var(--spacing-2xl);
}

.login-title {
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: var(--line-height-tight);
}

.login-subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-label {
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

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

.input-icon {
  position: absolute;
  left: var(--spacing-md);
  color: var(--color-text-tertiary);
  pointer-events: none;
  transition: color var(--transition-base);
}

.form-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3rem;
  font-size: 1rem;
  color: var(--color-text-primary);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  outline: none;
  transition: all var(--transition-base);
  font-family: inherit;
}

.form-input::placeholder {
  color: var(--color-text-tertiary);
}

.form-input:focus {
  border-color: var(--color-border-focus);
  background: var(--color-background);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.form-input:focus + .input-icon,
.input-wrapper:focus-within .input-icon {
  color: var(--color-primary);
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: calc(-1 * var(--spacing-xs));
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.checkbox-text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.forgot-link {
  font-size: 0.875rem;
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-base);
}

.forgot-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.login-button {
  width: 100%;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  color: #ffffff;
  background: #1d1d1f;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
  margin-top: var(--spacing-md);
  text-decoration: none;
  font-family: inherit;
}

.login-button:hover {
  background: #000000;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.login-button:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.button-icon {
  transition: transform var(--transition-base);
}

.login-button:hover .button-icon {
  transform: translateX(4px);
}


.signup-text {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-lg);
}

.signup-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  transition: color var(--transition-base);
}

.signup-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

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

.fade-in {
  animation: fadeIn 0.6s ease forwards;
  opacity: 0;
}

.fade-in-right {
  animation: fadeInRight 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@media (max-width: 1024px) {
  .login-left {
    padding: var(--spacing-2xl);
  }

  .login-features {
    margin-top: var(--spacing-2xl);
  }

  .brand-title {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .login-container {
    flex-direction: column;
  }

  .login-left {
    min-height: 25vh;
    padding: var(--spacing-xl);
    order: 2;
  }

  .login-right {
    padding: var(--spacing-xl);
    order: 1;
  }

  .login-title {
    font-size: 1.75rem;
  }

}

/* Toast Notification */
.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-width: 400px;
  width: 100%;
}

.toast {
  background: #fff;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15), 0 4px 12px rgba(0, 0, 0, 0.08);
  padding: var(--spacing-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  position: relative;
  transform: translateX(120%);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border-left: 4px solid;
}

.toast.show {
  transform: translateX(0);
}

.toast.error {
  border-left-color: #f97316;
}

.toast-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: 1rem;
}

.toast.error .toast-icon {
  background: #fed7aa;
  color: #ea580c;
}

.toast-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.toast-title {
  font-size: 0.9375rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.toast-message {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.toast-close {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  color: var(--color-text-tertiary);
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
}

.toast-close:hover {
  background: var(--color-surface);
  color: var(--color-text-primary);
}

.toast-close svg {
  width: 18px;
  height: 18px;
}

@media (max-width: 480px) {
  .toast-container {
    right: var(--spacing-md);
    left: var(--spacing-md);
    max-width: none;
  }

  .login-right {
    padding: var(--spacing-lg);
  }

  .brand-title {
    font-size: 1.25rem;
  }

  .login-title {
    font-size: 1.5rem;
  }

  .form-options {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
}