:root {
  --primary-color: #2563eb;
  --primary-color-rgb: 37, 99, 235;
  --primary-hover: #1d4ed8;
  --primary-light: #3b82f6;
  --accent-color: #f59e0b;
  --accent-hover: #d97706;

  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-on-primary: #ffffff;
  --text-placeholder: #94a3b8;

  --bg-page: #0f172a;
  --bg-card: #ffffff;
  --bg-input: #f8fafc;
  --bg-input-focus: #ffffff;
  --bg-input-disabled: #f1f5f9;

  --border-color: #e2e8f0;
  --border-input-focus: var(--primary-color);

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1),
    0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --shadow-focus: 0 0 0 3px rgb(37 99 235 / 0.1);

  --success-text: #059669;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;

  --error-text: #dc2626;
  --error-bg: #fef2f2;
  --error-border: #fecaca;

  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 25%, #334155 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  position: relative;
  overflow-x: hidden;
}

/* Animated background elements */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
      circle at 20% 80%,
      rgba(37, 99, 235, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(245, 158, 11, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 40% 40%,
      rgba(59, 130, 246, 0.05) 0%,
      transparent 50%
    );
  pointer-events: none;
  z-index: -1;
}

.auth-page-wrapper {
  width: 100%;
  max-width: 1400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 1;
}

/* Flash Messages */
.flash-messages-container {
  position: fixed;
  top: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: 90%;
  max-width: 500px;
  list-style: none;
}

.flash-message {
  padding: 1rem 1.5rem;
  margin-bottom: 0.75rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  animation: slideInDown 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.flash-message::before {
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  margin-right: 0.75rem;
  font-size: 1.1em;
}

.flash-success {
  background: rgba(236, 253, 245, 0.95);
  color: var(--success-text);
  border: 1px solid var(--success-border);
}

.flash-success::before {
  content: "\f058";
  color: var(--success-text);
}

.flash-error {
  background: rgba(254, 242, 242, 0.95);
  color: var(--error-text);
  border: 1px solid var(--error-border);
}

.flash-error::before {
  content: "\f06a";
  color: var(--error-text);
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translate3d(-50%, -100%, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(-50%, 0, 0);
  }
}

/* Main Auth Card */
.auth-content-card {
  display: flex;
  width: 100%;
  max-width: 1200px;
  min-height: 700px;
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  overflow: hidden;
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  animation: fadeInScale 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Branding Pane */
.auth-branding-pane {
  flex: 0 0 45%;
  background: linear-gradient(
    135deg,
    var(--primary-color) 0%,
    var(--primary-light) 25%,
    var(--primary-hover) 100%
  );
  color: var(--text-on-primary);
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.auth-branding-pane::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")
    repeat;
  pointer-events: none;
}

.auth-branding-pane > * {
  position: relative;
  z-index: 2;
}

.branding-logo-link {
  display: flex;
  align-items: center;
  color: var(--text-on-primary);
  text-decoration: none;
  margin-bottom: 1rem;
  transition: var(--transition-fast);
}

.branding-logo-link:hover {
  transform: translateY(-2px);
}

.branding-logo-link i {
  margin-right: 1rem;
  color: var(--accent-color);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.branding-logo-link h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.025em;
}

.auth-branding-pane h2 {
  font-size: 1.25rem;
  font-weight: 500;
  opacity: 0.9;
  margin-bottom: 2rem;
  line-height: 1.4;
}

.branding-tagline {
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.7;
  opacity: 0.95;
  margin-bottom: auto;
}

.branding-footer {
  margin-top: 3rem;
}

.home-link-alt {
  color: var(--text-on-primary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0.8;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.home-link-alt i {
  margin-right: 0.5rem;
}

.home-link-alt:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(-4px);
}

/* Form Pane */
.auth-form-pane {
  flex: 1;
  padding: 3rem;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

/* Tabs */
.auth-modal-header {
  display: flex;
  margin-bottom: 2rem;
  background: var(--bg-input);
  border-radius: var(--radius-lg);
  padding: 0.25rem;
  position: relative;
}

.tab-button {
  background: transparent;
  border: none;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
  border-radius: var(--radius-md);
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 2;
}

.tab-button:hover {
  color: var(--text-primary);
}

.tab-button.active {
  color: var(--primary-color);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.tab-content {
  display: none;
  flex-grow: 1;
  flex-direction: column;
}

.tab-content.active {
  display: flex;
  animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Form Toggle */
.form-toggle {
  display: flex;
  margin-bottom: 2rem;
  background: var(--bg-input);
  border-radius: var(--radius-full);
  padding: 0.25rem;
  border: 1px solid var(--border-color);
}

.form-toggle-button {
  background: transparent;
  border: none;
  padding: 0.75rem 0;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: var(--transition);
  flex: 1;
  text-align: center;
}

.form-toggle-button.active {
  background: var(--primary-color);
  color: var(--text-on-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.form-toggle-button:not(.active):hover {
  color: var(--text-primary);
  background: rgba(37, 99, 235, 0.05);
}

/* Forms */
.auth-form {
  display: none;
  flex-direction: column;
  gap: 1.5rem;
  flex-grow: 1;
}

.auth-form.active {
  display: flex;
}

.auth-form h3 {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.025em;
}

.auth-form .form-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.form-row {
  display: flex;
  gap: 1.5rem;
}

.form-row .form-group {
  flex: 1;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 0.875rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
  padding: 0.875rem 1rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-family: var(--font-family);
  color: var(--text-primary);
  background: var(--bg-input);
  transition: var(--transition);
  width: 100%;
  appearance: none;
  -webkit-appearance: none; /* For Safari */
  -moz-appearance: none; /* For Firefox */
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.25rem;
  padding-right: 3rem; /* Ensure space for custom arrow */
}

.form-group select:disabled {
  background-color: var(--bg-input-disabled);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-placeholder);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--border-input-focus);
  background: var(--bg-input-focus);
  box-shadow: var(--shadow-focus);
  transform: translateY(-1px);
}

/* Password input with toggle */
.password-input-wrapper {
  position: relative;
  display: flex;
  width: 100%;
}

/* Ensure inputs within wrapper take full width and have space for icon */
.password-input-wrapper input[type="password"],
.password-input-wrapper input[type="text"].is-revealed-password {
  /* Inherits base padding, but override right padding */
  padding-right: 2.75rem !important; /* Use important if necessary to override general styles */
  flex-grow: 1; /* Ensure input takes available space if wrapper is flex */
}

.password-toggle-icon {
  position: absolute;
  top: 50%;
  right: 1rem;
  transform: translateY(-50%);
  cursor: pointer;
  color: var(--text-placeholder);
  transition: color var(--transition-fast);
  font-size: 0.9rem; /* Slightly smaller than input text for balance */
  z-index: 3; /* Above input content */
}

.password-toggle-icon:hover {
  color: var(--text-secondary);
}

/* Submit Button */
.auth-submit-button {
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  width: 100%;
  margin-top: 1rem;
  background: linear-gradient(
    135deg,
    var(--primary-color) 0%,
    var(--primary-light) 100%
  );
  color: var(--text-on-primary);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.auth-submit-button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: var(--transition);
}

.auth-submit-button:hover::before {
  left: 100%;
}

.auth-submit-button i {
  font-size: 1.1em;
  transition: var(--transition);
}

.auth-submit-button:hover {
  background: linear-gradient(
    135deg,
    var(--primary-hover) 0%,
    var(--primary-color) 100%
  );
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.auth-submit-button:hover i {
  transform: translateX(2px);
}

.auth-submit-button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

/* Footer */
.auth-pane-footer-note {
  text-align: center;
  margin-top: auto;
  padding-top: 2rem;
  color: var(--text-secondary);
  font-size: 0.75rem;
  opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .auth-content-card {
    flex-direction: column;
    max-width: 600px;
    min-height: auto;
  }

  .auth-branding-pane {
    flex: 0 0 auto;
    padding: 2.5rem 2rem;
    text-align: center;
  }

  .branding-logo-link {
    justify-content: center;
  }

  .auth-form-pane {
    padding: 2rem;
  }
}

@media (max-width: 640px) {
  body {
    padding: 1rem 0.5rem;
  }

  .auth-content-card {
    border-radius: var(--radius-xl);
    margin: 0 0.5rem;
  }

  .auth-branding-pane {
    padding: 2rem 1.5rem;
  }

  .branding-logo-link h1 {
    font-size: 2rem;
  }

  .auth-branding-pane h2 {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
  }

  .branding-tagline {
    font-size: 1rem;
  }

  .auth-form-pane {
    padding: 1.5rem;
  }

  .auth-form h3 {
    font-size: 1.5rem;
  }

  .form-row {
    flex-direction: column;
    gap: 1.5rem; /* Maintained same gap as before, not 0 */
  }

  .flash-messages-container {
    top: 1rem;
    max-width: calc(100% - 1rem);
  }
}

@media (max-width: 480px) {
  .auth-modal-header {
    flex-direction: column;
    gap: 0.25rem;
  }

  .tab-button {
    padding: 0.625rem 1rem;
    font-size: 0.8125rem;
  }

  .form-toggle {
    margin-bottom: 1.5rem;
  }

  .form-toggle-button {
    padding: 0.625rem 0;
    font-size: 0.8125rem;
  }

  .form-group input[type="text"],
  .form-group input[type="email"],
  .form-group input[type="password"],
  .form-group input[type="tel"],
  .form-group select,
  .form-group textarea {
    padding: 0.75rem 0.875rem; /* Base padding */
    font-size: 0.8125rem;
  }

  /* Ensure password inputs still have space for icon on small screens */
  .password-input-wrapper input[type="password"],
  .password-input-wrapper input[type="text"].is-revealed-password {
    padding-right: 2.5rem !important; /* Adjusted for smaller screens */
  }
  .password-toggle-icon {
    right: 0.875rem; /* Adjust icon position slightly */
  }

  .auth-submit-button {
    padding: 0.875rem 1.5rem;
    font-size: 0.875rem;
  }
}

/* Dark mode enhancements */
@media (prefers-color-scheme: dark) {
  /* Example: Adjust form pane background if needed for better contrast,
     though current light gradient is often preferred for forms even in dark mode.
     This is a placeholder if more specific dark mode styles were desired for the form area.
  */
  /*
  .auth-form-pane {
    background: linear-gradient(180deg, #2c3e50 0%, #1e293b 100%);
  }
  .auth-form-pane, .auth-form-pane h3, .auth-form-pane .form-subtitle,
  .form-group label {
    color: var(--text-on-primary);
  }
  .form-group input, .form-group select, .form-group textarea {
     background: var(--bg-page);
     color: var(--text-on-primary);
     border-color: var(--text-secondary);
  }
  .form-group input::placeholder, .form-group textarea::placeholder {
     color: var(--text-secondary);
  }
  .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
     border-color: var(--primary-light);
     background: #0f172a;
  }
  .auth-modal-header, .form-toggle {
      background: #1e293b;
  }
  .tab-button.active {
      background: #0f172a;
  }
  */
  /* Keep current form pane styling for dark mode, as it's already light and clear */
  .auth-form-pane {
    /* Reverting to original if no specific dark mode change for form pane is desired */
    /* background: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%); */
    /* Using the existing definition which is fine */
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  }
}

/* Role Warning Box */
.auth-role-warning {
  padding: 1rem;
  margin-bottom: 2rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: 1rem;
  background-color: rgba(
    245,
    158,
    11,
    0.08
  ); /* Using accent color with low opacity */
  border: 1px solid rgba(245, 158, 11, 0.3);
  font-size: 0.875rem;
  animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.auth-role-warning .warning-icon {
  font-size: 1.5rem;
  color: var(--accent-color);
  flex-shrink: 0;
}

.auth-role-warning p {
  line-height: 1.5;
  color: var(--text-secondary);
  flex-grow: 1;
}

.auth-role-warning p strong {
  color: var(--text-primary);
  font-weight: 600;
}

.warning-switch-link {
  font-weight: 600;
  color: var(--primary-color);
  text-decoration: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
}

.warning-switch-link:hover {
  border-bottom-color: var(--primary-light);
}

.warning-arrow {
  color: var(--primary-color);
  font-size: 1.2rem;
  animation: danceArrow 1.5s infinite ease-in-out;
}

/* Dancing Arrow Animation */
@keyframes danceArrow {
  0%,
  100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(6px);
  }
}