/* FILE: static/css/auth.css */
/* AGENT: UX */
/* DESIGN: Adapted from Disaitek EUDR portal (Navy blue #132750) */
/* LAST_UPDATED: 2024-01-16 */

/* ============================================
   CSS Variables (Design Tokens)
   ============================================ */
:root {
  /* Login Colors (Disaitek palette) */
  --login-bg-body: #f4f4f4;
  --login-card-bg: #132750;
  --login-text-light: #fefefefe;
  --login-btn-primary: #007bff;
  --login-btn-hover: #0056b3;
  --login-link-blue: #4a9eff;
  --login-input-border: #cccccc;
  --login-input-bg: #ffffff;
  --login-shadow: rgba(0, 0, 0, 0.1);
  --login-error-bg: #fee;
  --login-error-text: #c33;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;

  /* Shadows */
  --shadow-card: 0px 4px 8px rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-simple: Arial, sans-serif;
  --text-base: 1rem;      /* 16px */
  --text-sm: 0.875rem;    /* 14px */
  --text-xs: 0.8125rem;   /* 13px */

  /* Transitions */
  --transition-base: 0.2s ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-simple);
  background-color: var(--login-bg-body);
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

/* ============================================
   Login Container (Card)
   ============================================ */
.container {
  width: 400px;
  max-width: 90%;
  padding: var(--spacing-lg);
  background-color: var(--login-card-bg);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius-md);
  text-align: center;
}

/* ============================================
   Typography
   ============================================ */
h1 {
  color: var(--login-text-light);
  margin-bottom: var(--spacing-sm);
  font-size: 1.75rem;
  font-weight: 600;
}

.subtitle {
  color: var(--login-text-light);
  opacity: 0.85;
  font-size: var(--text-sm);
  margin-bottom: var(--spacing-lg);
}

/* ============================================
   Form Styles
   ============================================ */
form {
  display: flex;
  flex-direction: column;
}

input[type="email"],
input[type="password"] {
  margin-bottom: var(--spacing-md);
  padding: 10px var(--spacing-sm);
  font-size: var(--text-base);
  border: 1px solid var(--login-input-border);
  border-radius: var(--radius-sm);
  background-color: var(--login-input-bg);
  transition: border-color var(--transition-base);
}

input[type="email"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--login-btn-primary);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

input[type="email"]::placeholder,
input[type="password"]::placeholder {
  color: #999;
}

/* ============================================
   Button Styles
   ============================================ */
button[type="submit"] {
  position: relative;
  padding: 12px var(--spacing-md);
  font-size: var(--text-base);
  font-weight: 500;
  color: #ffffff;
  background-color: var(--login-btn-primary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

button[type="submit"]:hover:not(:disabled) {
  background-color: var(--login-btn-hover);
}

button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button[type="submit"]:active:not(:disabled) {
  transform: scale(0.98);
}

/* ============================================
   Loading Spinner
   ============================================ */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.spinner.hidden {
  display: none;
}

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

/* ============================================
   Error Message
   ============================================ */
.error-message {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--login-error-bg);
  color: var(--login-error-text);
  border: 1px solid var(--login-error-text);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  text-align: left;
}

.error-message.hidden {
  display: none;
}

/* ============================================
   Success Message
   ============================================ */
.success-message {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  text-align: center;
  line-height: 1.5;
}

.success-message.hidden {
  display: none;
}

/* ============================================
   Forgot Password Link
   ============================================ */
.forgot-password {
  margin-top: var(--spacing-md);
  font-size: var(--text-xs);
}

.forgot-password a {
  color: var(--login-link-blue);
  text-decoration: none;
  transition: text-decoration var(--transition-base);
}

.forgot-password a:hover {
  text-decoration: underline;
}

/* ============================================
   Success Icon
   ============================================ */
.success-icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  animation: scaleIn 0.3s ease-out;
}

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

/* ============================================
   Primary Button (Link styled as button)
   ============================================ */
.btn-primary {
  display: inline-block;
  margin-top: var(--spacing-lg);
  padding: 12px var(--spacing-xl);
  font-size: var(--text-base);
  font-weight: 500;
  color: #ffffff;
  background-color: var(--login-btn-primary);
  border: none;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.btn-primary:hover {
  background-color: var(--login-btn-hover);
}

.btn-primary:active {
  transform: scale(0.98);
}

/* ============================================
   Info Text
   ============================================ */
.info-text {
  margin-top: var(--spacing-lg);
  color: var(--login-text-light);
  opacity: 0.7;
  font-size: var(--text-sm);
}

.info-text span {
  font-weight: 600;
  color: var(--login-link-blue);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 480px) {
  .container {
    width: 100%;
    max-width: 95%;
    padding: var(--spacing-md);
  }

  h1 {
    font-size: 1.5rem;
  }

  input[type="email"],
  input[type="password"],
  button[type="submit"] {
    font-size: var(--text-sm);
  }
}

/* ============================================
   Accessibility
   ============================================ */

/* Focus visible for keyboard navigation */
input:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--login-link-blue);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .container {
    border: 2px solid white;
  }

  input[type="email"],
  input[type="password"] {
    border: 2px solid var(--login-input-border);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}