/**
 * Login Page Styles
 *
 * Split-panel design: left panel (welcome), right panel (form).
 * Uses design system colors only (see variables.css). No hardcoded hex.
 * Centered, responsive. Smooth scroll and card transition when opening login.
 */

/* Smooth scroll when on login page */
html:has(section.login) {
  scroll-behavior: smooth;
}

/* Page: full-viewport background, center content */
.login {
  width: 100%;
  min-height: 100vh;
  padding: var(--spacing-xl) var(--spacing-md);
  background-color: var(--color-bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

.login__wrapper {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
}

/* Card: rounded container, two panels side by side; smooth entrance */
.login__card {
  display: flex;
  flex-direction: row;
  min-height: 480px;
  max-height: 90vh;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  animation: loginCardEnter 0.5s ease-out;
}

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

/* Left panel: welcome message (system nav/sidebar color) */
.login__panel--left {
  flex: 0 0 40%;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  padding: var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.login__welcome-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin: 0 0 var(--spacing-lg);
  line-height: 1.2;
}

.login__welcome-text {
  font-size: var(--font-size-base);
  line-height: 1.6;
  margin: 0 0 var(--spacing-xl);
  max-width: 280px;
  opacity: 0.95;
}

.login__panel-cta {
  margin: 0 0 var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  opacity: 0.95;
}

/* Register button on left panel */
.login__register-btn {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-bg-secondary);
  background-color: var(--color-text-primary);
  border: 2px solid var(--color-text-primary);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-fast);
}

.login__register-btn:hover {
  background-color: transparent;
  color: var(--color-text-primary);
  transform: translateY(-1px);
}

/* Right panel: form (system primary background) */
.login__panel--right {
  flex: 1 1 60%;
  background-color: var(--color-bg-primary);
  padding: var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Responsive logo at top */
.login__logo-link {
  display: block;
  margin-bottom: var(--spacing-lg);
  flex-shrink: 0;
}

.login__logo {
  display: block;
  max-width: 140px;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.login__title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-lg);
  text-align: center;
}

.login__messages {
  width: 100%;
  margin-bottom: var(--spacing-md);
}

.login__message {
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.login__message--error {
  background-color: var(--color-overlay-light);
  border: 1px solid var(--color-pro-red);
  color: var(--color-pro-red);
}

.login__message--success {
  background-color: var(--color-overlay-light);
  border: 1px solid var(--color-accent-primary);
  color: var(--color-accent-primary);
}

.login__message p {
  margin: 0;
  font-weight: 500;
}

.login__form {
  width: 100%;
  max-width: 280px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.login__error {
  background-color: var(--color-overlay-light);
  border: 1px solid var(--color-pro-red);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-pro-red);
  font-size: var(--font-size-sm);
}

.login__error p {
  margin: 0;
  font-weight: 500;
}

.login__field {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.login__label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-primary);
}

/* Input: system overlay and border */
.login__form-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  background-color: var(--color-overlay-light);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), background-color var(--transition-base);
  box-sizing: border-box;
}

.login__form-input:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  background-color: var(--color-overlay-light);
}

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

.login__field-errors {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--font-size-xs);
  color: var(--color-pro-red);
}

/* Full-width primary submit button – compact */
.login__submit {
  width: 100%;
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 700;
  background-color: var(--color-accent-primary);
  color: var(--color-text-primary);
  border: 2px solid var(--color-accent-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-base), transform var(--transition-fast);
  margin-top: var(--spacing-xs);
}

.login__submit:hover {
  background-color: var(--color-accent-secondary);
  border-color: var(--color-accent-secondary);
  transform: translateY(-1px);
}

.login__actions {
  margin-top: var(--spacing-lg);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  align-items: center;
}

.login__register-btn-inline {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-text-primary);
  background-color: var(--color-accent-primary);
  border: none;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background-color var(--transition-base), transform var(--transition-fast);
}

.login__register-btn-inline:hover {
  background-color: var(--color-accent-secondary);
  transform: translateY(-1px);
}

.login__home {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  background-color: transparent;
  border: none;
  text-decoration: none;
  transition: color var(--transition-base);
}

.login__home:hover {
  color: var(--color-accent-primary);
}

/* Responsive: stack panels, form on top, centered */
@media (max-width: 768px) {
  .login {
    padding: var(--spacing-lg) var(--spacing-md);
    align-items: flex-start;
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
  }

  .login__card {
    flex-direction: column;
    min-height: 0;
    max-height: none;
  }

  .login__panel--left {
    flex: none;
    padding: var(--spacing-xl);
    order: 2;
  }

  .login__panel--right {
    flex: none;
    padding: var(--spacing-xl);
    order: 1;
  }

  .login__welcome-title {
    font-size: var(--font-size-2xl);
  }

  .login__welcome-text {
    max-width: 100%;
  }

  .login__logo {
    max-width: 120px;
  }

  .login__title {
    font-size: var(--font-size-2xl);
  }

  .login__actions {
    flex-direction: column;
  }

  .login__actions a {
    width: 100%;
    max-width: 280px;
    text-align: center;
    box-sizing: border-box;
  }
}

@media (max-width: 480px) {
  .login {
    padding: var(--spacing-md);
  }

  .login__logo {
    max-width: 100px;
  }

  .login__title {
    font-size: var(--font-size-xl);
  }

  .login__panel--left,
  .login__panel--right {
    padding: var(--spacing-lg);
  }

  .login__form {
    max-width: 100%;
  }

  .login__welcome-title {
    font-size: var(--font-size-xl);
  }

  .login__welcome-text {
    font-size: var(--font-size-sm);
  }
}