/* SAS-AM AI Readiness Assessment Styles
 * Australian English localisation
 */

/* ============================================
   CSS Custom Properties (Variables)
   ============================================ */

:root {
  /* SAS-AM Brand Colours */
  --color-navy: #1e3a5f;
  --color-navy-light: #2a4a6f;
  --color-green: #7cb342;
  --color-green-dark: #689f38;
  --color-white: #ffffff;
  --color-grey-50: #f9fafb;
  --color-grey-100: #f3f4f6;
  --color-grey-200: #e5e7eb;
  --color-grey-400: #9ca3af;
  --color-grey-600: #4b5563;
  --color-grey-900: #111827;

  /* Result Band Colours */
  --color-ready: #7cb342;
  --color-close: #3b82f6;
  --color-foundation: #f59e0b;
  --color-early: #ef4444;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

/* ============================================
   Base Styles
   ============================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  background-color: var(--color-grey-50);
  color: var(--color-grey-600);
  line-height: 1.6;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  color: var(--color-grey-900);
  margin-top: 0;
  margin-bottom: 0.5em;
  font-weight: 600;
  line-height: 1.3;
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
  color: var(--color-grey-600);
  margin-top: 0;
  margin-bottom: 1em;
}

a {
  color: var(--color-green-dark);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-green);
  text-decoration: underline;
}

small, .text-muted {
  color: var(--color-grey-400);
}

/* ============================================
   Layout
   ============================================ */

.container {
  max-width: 100%;
  padding: var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    max-width: 640px;
    padding: var(--spacing-xl);
    margin: 0 auto;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 720px;
  }
}

/* ============================================
   Header
   ============================================ */

.header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-grey-200);
  padding: var(--spacing-md);
}

.header__logo {
  height: 40px;
}

/* ============================================
   Progress Bar
   ============================================ */

.progress {
  margin-bottom: var(--spacing-xl);
}

.progress__bar {
  height: 8px;
  background-color: var(--color-grey-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.progress__fill {
  height: 100%;
  background-color: var(--color-green);
  transition: width var(--transition-normal);
}

.progress__text {
  font-size: var(--font-size-sm);
  color: var(--color-grey-400);
  margin-top: var(--spacing-sm);
}

/* ============================================
   Question Card
   ============================================ */

.question-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-grey-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.question-card__question {
  font-size: var(--font-size-xl);
  color: var(--color-grey-900);
  margin-bottom: var(--spacing-md);
}

.question-card__context {
  font-size: var(--font-size-sm);
  color: var(--color-grey-600);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background-color: var(--color-grey-50);
  border-radius: var(--radius-md);
}

/* ============================================
   Option Buttons
   ============================================ */

.options-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .options-grid {
    flex-direction: row;
  }
}

.option-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-lg);
  background-color: var(--color-white);
  border: 2px solid var(--color-grey-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  min-height: 44px;
}

.option-btn:hover {
  border-color: var(--color-green);
  background-color: var(--color-grey-50);
}

.option-btn.selected {
  border-color: var(--color-green);
  background-color: rgba(124, 179, 66, 0.1);
}

.option-btn__label {
  font-weight: 600;
  color: var(--color-grey-900);
  margin-bottom: var(--spacing-xs);
}

.option-btn__sublabel {
  font-size: var(--font-size-sm);
  color: var(--color-grey-400);
}

/* ============================================
   Navigation Buttons
   ============================================ */

.nav-buttons {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-xl);
  gap: var(--spacing-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  min-height: 44px;
  min-width: 44px;
}

.btn-primary {
  background-color: var(--color-navy);
  color: var(--color-white);
}

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

.btn-secondary {
  background-color: transparent;
  color: var(--color-grey-600);
  border: 1px solid var(--color-grey-200);
}

.btn-secondary:hover {
  border-color: var(--color-grey-400);
  color: var(--color-grey-900);
}

.btn-green {
  background-color: var(--color-green);
  color: var(--color-white);
}

.btn-green:hover {
  background-color: var(--color-green-dark);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   Results Page
   ============================================ */

.results {
  text-align: center;
}

.results__score {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.results__headline {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
}

.results__summary {
  font-size: var(--font-size-lg);
  color: var(--color-grey-600);
  margin-bottom: var(--spacing-xl);
}

/* Result band colours */
.results--ready .results__score,
.results--ready .results__headline { color: var(--color-ready); }

.results--close .results__score,
.results--close .results__headline { color: var(--color-close); }

.results--foundation .results__score,
.results--foundation .results__headline { color: var(--color-foundation); }

.results--early .results__score,
.results--early .results__headline { color: var(--color-early); }

/* Score Breakdown */
.score-breakdown {
  text-align: left;
  background-color: var(--color-grey-50);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.score-breakdown__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-grey-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
}

.score-breakdown__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-grey-200);
}

.score-breakdown__item:last-child {
  border-bottom: none;
}

.score-breakdown__icon {
  margin-right: var(--spacing-sm);
}

.score-breakdown__icon--yes { color: var(--color-ready); }
.score-breakdown__icon--partial { color: var(--color-foundation); }
.score-breakdown__icon--no { color: var(--color-early); }

/* Next Steps */
.next-steps {
  text-align: left;
  margin-bottom: var(--spacing-xl);
}

.next-steps__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-grey-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
}

.next-steps__list {
  list-style: decimal;
  padding-left: var(--spacing-lg);
  color: var(--color-grey-600);
}

.next-steps__list li {
  margin-bottom: var(--spacing-sm);
}

/* ============================================
   Lead Capture Form
   ============================================ */

.lead-form {
  background-color: var(--color-grey-50);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.lead-form__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
}

.form-group {
  margin-bottom: var(--spacing-md);
  text-align: left;
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--color-grey-900);
  font-weight: 500;
  font-size: var(--font-size-sm);
}

.form-input {
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  color: var(--color-grey-900);
  background-color: var(--color-white);
  border: 1px solid var(--color-grey-200);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-green);
  box-shadow: 0 0 0 3px rgba(124, 179, 66, 0.2);
}

.lead-form__buttons {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

/* ============================================
   Footer
   ============================================ */

.footer {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--color-grey-400);
  font-size: var(--font-size-sm);
}

.footer a {
  color: var(--color-grey-400);
}

.footer a:hover {
  color: var(--color-grey-600);
}

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

:focus-visible {
  outline: 2px solid var(--color-green);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

/* ============================================
   Skip Link
   ============================================ */

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--spacing-md);
  background: var(--color-navy);
  color: var(--color-white);
  padding: var(--spacing-md) var(--spacing-lg);
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--spacing-md);
}

/* ============================================
   Intro Section
   ============================================ */

.intro {
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.intro__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-grey-600);
  margin-bottom: var(--spacing-sm);
}

.intro__description {
  color: var(--color-grey-600);
  max-width: 500px;
  margin: 0 auto var(--spacing-xl);
}

/* ============================================
   Lead Capture (Gated)
   ============================================ */

.lead-capture__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.lead-capture__subtitle {
  color: var(--color-grey-600);
  margin-bottom: var(--spacing-xl);
}

/* ============================================
   Loading State
   ============================================ */

.btn--loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn--loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin-top: -10px;
  margin-left: -10px;
  border: 2px solid var(--color-white);
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 0.6s linear infinite;
}

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

/* ============================================
   Toast Notifications
   ============================================ */

#toast-container {
  position: fixed;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
}

.toast {
  background-color: var(--color-navy);
  color: var(--color-white);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
  margin-top: var(--spacing-sm);
}

.toast--success {
  background-color: var(--color-green-dark);
}

.toast--error {
  background-color: var(--color-early);
}

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

@keyframes fadeOut {
  to {
    opacity: 0;
  }
}

/* ============================================
   Form Errors
   ============================================ */

.form-error {
  color: var(--color-early);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.form-input[aria-invalid="true"] {
  border-color: var(--color-early);
}

.form-input[aria-invalid="true"]:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

/* ============================================
   Email Validation Indicator
   ============================================ */

.email-validation-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
  min-height: 1.5em;
}

.email-validation-indicator--verifying {
  color: var(--color-grey-600);
}

.email-validation-indicator--valid {
  color: var(--color-green-dark);
}

.email-validation-indicator--invalid {
  color: var(--color-early);
}

.email-validation-icon {
  font-weight: 600;
}

.email-validation-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--color-grey-200);
  border-top-color: var(--color-green);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.form-input.email-verified {
  border-color: var(--color-green);
}

.form-input.email-verified:focus {
  box-shadow: 0 0 0 3px rgba(124, 179, 66, 0.2);
}

.form-input.email-invalid {
  border-color: var(--color-early);
}

.form-input.email-invalid:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

/* ============================================
   Results Bar
   ============================================ */

.results__header {
  margin-bottom: var(--spacing-xl);
}

.results__title {
  font-size: var(--font-size-lg);
  color: var(--color-grey-600);
  font-weight: 400;
  margin-bottom: var(--spacing-lg);
}

.results__bar-container {
  width: 100%;
  max-width: 400px;
  height: 24px;
  background-color: var(--color-grey-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 0 auto var(--spacing-lg);
}

.results__bar-fill {
  height: 100%;
  width: 0;
  transition: width 1s ease-out;
  border-radius: var(--radius-lg);
}

/* ============================================
   Download Section
   ============================================ */

.download-section {
  background-color: var(--color-grey-50);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.download-section__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.download-section__text {
  color: var(--color-grey-600);
  margin-bottom: var(--spacing-lg);
}

/* ============================================
   CTA Section
   ============================================ */

.cta-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

@media (min-width: 640px) {
  .cta-section {
    flex-direction: row;
    justify-content: center;
  }
}

/* ============================================
   Noscript Warning
   ============================================ */

.noscript-warning {
  background-color: var(--color-foundation);
  color: var(--color-white);
  padding: var(--spacing-lg);
  text-align: center;
  margin: var(--spacing-xl);
  border-radius: var(--radius-md);
}

.noscript-warning a {
  color: var(--color-white);
  text-decoration: underline;
}

/* ============================================
   Mobile Responsive Improvements
   ============================================ */

@media (max-width: 640px) {
  .nav-buttons {
    flex-direction: column-reverse;
  }

  .nav-buttons .btn {
    width: 100%;
  }

  .lead-form__buttons {
    flex-direction: column;
  }

  .lead-form__buttons .btn {
    width: 100%;
  }

  h1 {
    font-size: clamp(1.5rem, 6vw, var(--font-size-3xl));
  }

  h2 {
    font-size: clamp(1.25rem, 5vw, var(--font-size-2xl));
  }

  .results__score {
    font-size: clamp(2rem, 10vw, var(--font-size-3xl));
  }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  .header,
  .footer,
  .skip-link,
  .download-section,
  .cta-section,
  .btn {
    display: none;
  }

  body {
    background: white;
  }

  .question-card,
  .score-breakdown {
    border: 1px solid #000;
    box-shadow: none;
  }

  .results,
  .score-breakdown,
  .next-steps {
    page-break-inside: avoid;
  }
}