/**
 * MP Diamonds Assessment - Mobile-First Stylesheet
 * Minimum 44x44px touch targets for mobile accessibility
 */

/* CSS Custom Properties */
:root {
  /* Colors */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-success: #059669;
  --color-success-light: #d1fae5;
  --color-warning: #d97706;
  --color-warning-light: #fef3c7;
  --color-danger: #dc2626;
  --color-danger-light: #fee2e2;
  --color-neutral: #6b7280;
  --color-neutral-light: #f3f4f6;

  /* Text */
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-text-inverse: #ffffff;

  /* Background */
  --color-bg: #ffffff;
  --color-bg-secondary: #f9fafb;
  --color-bg-tertiary: #f3f4f6;

  /* Border */
  --color-border: #e5e7eb;
  --color-border-focus: #2563eb;

  /* 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);

  /* Touch Target Size */
  --touch-target: 44px;

  /* Font */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--spacing-md) 0;
  line-height: 1.2;
}

p {
  margin: 0 0 var(--spacing-md) 0;
}

/* ==========================================================================
   LOGIN PAGE
   ========================================================================== */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.login-container {
  width: 100%;
  max-width: 400px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-xl);
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.login-header h1 {
  color: var(--color-primary);
  font-size: 1.75rem;
  margin-bottom: var(--spacing-xs);
}

.login-header .subtitle {
  color: var(--color-text-light);
  margin: 0;
}

/* ==========================================================================
   FORMS
   ========================================================================== */

.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

input[type="text"],
input[type="password"],
input[type="email"],
select,
textarea {
  width: 100%;
  min-height: var(--touch-target);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1rem;
  font-family: inherit;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

input.error,
select.error,
textarea.error {
  border-color: var(--color-danger);
}

input.error:focus,
select.error:focus,
textarea.error:focus {
  box-shadow: 0 0 0 3px var(--color-danger-light);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-sm) center;
  background-size: 1.25rem;
  padding-right: 2.5rem;
  cursor: pointer;
}

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

.help-text {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.error-message {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--color-danger);
  min-height: 1.25rem;
}

.form-error {
  padding: var(--spacing-md);
  background: var(--color-danger-light);
  color: var(--color-danger);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  display: none;
}

.form-error.visible {
  display: block;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-target);
  min-width: var(--touch-target);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.btn-primary:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover:not(:disabled) {
  background: var(--color-bg-tertiary);
}

.btn-sm {
  min-height: 36px;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
}

.btn-lg {
  min-height: 52px;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.125rem;
}

/* Full width button on mobile */
.login-form .btn,
.form-actions .btn {
  width: 100%;
}

/* Loading state */
.btn-loading {
  display: none;
  width: 1rem;
  height: 1rem;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  margin-left: var(--spacing-sm);
  animation: spin 0.6s linear infinite;
}

.loading .btn-text {
  opacity: 0.7;
}

.loading .btn-loading {
  display: inline-block;
}

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

/* ==========================================================================
   ASSESSMENT PAGE
   ========================================================================== */

.app-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 800px;
  margin: 0 auto;
}

.app-header h1 {
  font-size: 1.25rem;
  margin: 0;
  color: var(--color-primary);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-name {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.assessment-page {
  padding: var(--spacing-md);
  padding-bottom: var(--spacing-2xl);
}

.assessment-container {
  max-width: 600px;
  margin: 0 auto;
}

.assessment-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.assessment-header h2 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.date-display {
  color: var(--color-text-light);
  margin: 0;
}

/* Form sections */
.form-section {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.form-section legend {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  padding: 0 var(--spacing-sm);
}

.form-actions {
  margin-top: var(--spacing-lg);
}

/* ==========================================================================
   RESULT SECTION
   ========================================================================== */

.result-section {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: var(--color-bg);
  border: 2px solid var(--color-success);
  border-radius: var(--radius-lg);
}

.result-section.hidden {
  display: none;
}

.result-section h3 {
  color: var(--color-success);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.result-card {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
}

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

.result-row:last-of-type {
  border-bottom: none;
}

.result-label {
  font-weight: 500;
  color: var(--color-text-light);
}

.result-value {
  font-weight: 600;
  font-size: 1.125rem;
}

.result-bias {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  font-size: 0.875rem;
}

.bias-bullish {
  background: var(--color-success-light);
  color: var(--color-success);
}

.bias-neutral {
  background: var(--color-neutral-light);
  color: var(--color-neutral);
}

.bias-bearish {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.bias-defensive {
  background: var(--color-danger-light);
  color: var(--color-danger);
}

.result-summary {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

.result-summary p {
  margin: 0;
  color: var(--color-text);
  line-height: 1.6;
}

/* ==========================================================================
   ACCESSIBILITY
   ========================================================================== */

/* Focus visible for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Screen reader only */
.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;
}

/* ==========================================================================
   RESPONSIVE - TABLET AND UP
   ========================================================================== */

@media (min-width: 640px) {
  .login-container {
    padding: var(--spacing-2xl);
  }

  .login-header h1 {
    font-size: 2rem;
  }

  .app-header h1 {
    font-size: 1.5rem;
  }

  .assessment-header h2 {
    font-size: 1.75rem;
  }

  .form-section {
    padding: var(--spacing-xl);
  }

  .result-card {
    padding: var(--spacing-xl);
  }
}

/* ==========================================================================
   RESPONSIVE - DESKTOP
   ========================================================================== */

@media (min-width: 1024px) {
  .form-actions .btn {
    width: auto;
    min-width: 200px;
  }

  .login-form .btn {
    width: 100%;
  }

  .form-actions {
    text-align: center;
  }
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */

.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}