/* ============================================================
   College Essay Wizard - Responsive CSS Framework
   Mobile-first design with professional blue/white color scheme
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors - Primary */
  --color-primary: #1a56db;
  --color-primary-dark: #1444b0;
  --color-primary-light: #3b82f6;
  --color-primary-bg: #eff6ff;

  /* Colors - Neutral */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Colors - Semantic */
  --color-success: #059669;
  --color-success-bg: #ecfdf5;
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --color-warning: #d97706;
  --color-warning-bg: #fffbeb;
  --color-info: #2563eb;
  --color-info-bg: #eff6ff;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --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: 1.875rem;
  --font-size-4xl: 2.25rem;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

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

  /* Layout */
  --navbar-height: 56px;
  --container-max: 1200px;
  --container-narrow: 640px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-800);
  background-color: var(--color-gray-50);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

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

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

ul,
ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
}

h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-6);
}

h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-4);
}

h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
}

h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

h5 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-2);
}

h6 {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-1);
}

p {
  margin-bottom: var(--space-4);
}

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

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

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

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

.text-muted {
  color: var(--color-gray-500);
}

.text-error {
  color: var(--color-error);
}

.text-success {
  color: var(--color-success);
}


/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.app-container {
  padding-top: calc(var(--navbar-height) + var(--space-6));
  padding-bottom: var(--space-8);
  min-height: 100vh;
}

/* Flex Helpers */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

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

.items-start {
  align-items: flex-start;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-1 {
  gap: var(--space-1);
}

.gap-2 {
  gap: var(--space-2);
}

.gap-3 {
  gap: var(--space-3);
}

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

.gap-8 {
  gap: var(--space-8);
}

/* Grid Helpers */
.grid {
  display: grid;
  gap: var(--space-4);
}

.grid-cols-1 {
  grid-template-columns: 1fr;
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* Spacing Utilities */
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mx-auto { margin-left: auto; margin-right: auto; }

.p-2 { padding: var(--space-2); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.py-12 { padding-top: var(--space-12); padding-bottom: var(--space-12); }
.py-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }

/* Display Utilities */
.hidden {
  display: none !important;
}

.block {
  display: block;
}

.w-full {
  width: 100%;
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.navbar-brand {
  display: flex;
  align-items: center;
}

.navbar-logo {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
}

.navbar-logo:hover {
  color: var(--color-primary-dark);
  text-decoration: none;
}

.navbar-links {
  display: none;
  flex-direction: column;
  position: absolute;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  padding: var(--space-4);
  box-shadow: var(--shadow-md);
}

.navbar-links.active {
  display: flex;
}

.navbar-links a,
.navbar-links button {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: var(--space-3) var(--space-4);
  color: var(--color-gray-700);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.navbar-links a:hover,
.navbar-links button:hover {
  background-color: var(--color-gray-100);
  color: var(--color-primary);
  text-decoration: none;
}

.navbar-links a.active {
  color: var(--color-primary);
  background-color: var(--color-primary-bg);
}

.navbar-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-gray-700);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.navbar-toggle:hover {
  background-color: var(--color-gray-100);
}

.navbar-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.navbar-toggle-icon {
  width: 24px;
  height: 2px;
  background-color: currentColor;
  position: relative;
  transition: background-color var(--transition-fast);
}

.navbar-toggle-icon::before,
.navbar-toggle-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: currentColor;
  transition: transform var(--transition-base);
}

.navbar-toggle-icon::before {
  top: -7px;
}

.navbar-toggle-icon::after {
  top: 7px;
}


/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-normal);
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
  gap: var(--space-2);
}

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

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

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  text-decoration: none;
  color: var(--color-white);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-gray-700);
  border-color: var(--color-gray-300);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-gray-50);
  border-color: var(--color-gray-400);
  text-decoration: none;
  color: var(--color-gray-800);
}

.btn-danger {
  background-color: var(--color-error);
  color: var(--color-white);
  border-color: var(--color-error);
}

.btn-danger:hover:not(:disabled) {
  background-color: #b91c1c;
  border-color: #b91c1c;
  text-decoration: none;
  color: var(--color-white);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-primary-bg);
  text-decoration: none;
}

.btn-sm {
  min-height: 36px;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

.btn-lg {
  min-height: 52px;
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn-link {
  background: none;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}

.btn-link:hover {
  color: var(--color-primary-dark, #1d4ed8);
}

/* --- Forms --- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
}

.form-label-required::after {
  content: ' *';
  color: var(--color-error);
}

.form-input,
.form-textarea,
.form-select {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-gray-400);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  background-color: var(--color-gray-100);
  color: var(--color-gray-500);
  cursor: not-allowed;
}

/* Validation States */
.form-input.is-invalid,
.form-textarea.is-invalid,
.form-select.is-invalid {
  border-color: var(--color-error);
}

.form-input.is-invalid:focus,
.form-textarea.is-invalid:focus,
.form-select.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

.form-input.is-valid,
.form-textarea.is-valid,
.form-select.is-valid {
  border-color: var(--color-success);
}

.form-error {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-error);
}

.form-hint {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* Textarea */
.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Select */
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%236b7280' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 16px;
  padding-right: var(--space-10);
}

/* File Input */
.form-file {
  display: block;
  width: 100%;
}

.form-file-label {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-4) var(--space-6);
  border: 2px dashed var(--color-gray-300);
  border-radius: var(--radius-lg);
  cursor: pointer;
  text-align: center;
  color: var(--color-gray-500);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.form-file-label:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-bg);
}

.form-file input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}


/* --- Cards --- */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-body {
  padding: var(--space-5);
}

.card-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-50);
}

.card-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-50);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-2);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.card-clickable {
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.card-clickable:hover {
  text-decoration: none;
  color: inherit;
}

.card-clickable:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* --- Score Display --- */
.score-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-6);
}

.score-number {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.score-number.score-high {
  color: var(--color-success);
}

.score-number.score-medium {
  color: var(--color-warning);
}

.score-number.score-low {
  color: var(--color-error);
}

.score-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.score-out-of {
  font-size: var(--font-size-lg);
  color: var(--color-gray-400);
  font-weight: var(--font-weight-normal);
}

/* Dimension Score Bars */
.dimension-scores {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.dimension-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.dimension-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.dimension-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
}

.dimension-value {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-800);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-bar-fill.score-high {
  background-color: var(--color-success);
}

.progress-bar-fill.score-medium {
  background-color: var(--color-warning);
}

.progress-bar-fill.score-low {
  background-color: var(--color-error);
}

/* --- Alerts / Notifications --- */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
}

.alert-success {
  background-color: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid #a7f3d0;
}

.alert-error {
  background-color: var(--color-error-bg);
  color: var(--color-error);
  border: 1px solid #fecaca;
}

.alert-warning {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid #fde68a;
}

.alert-info {
  background-color: var(--color-info-bg);
  color: var(--color-info);
  border: 1px solid #bfdbfe;
}

.alert-dismiss {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  opacity: 0.7;
  font-size: var(--font-size-lg);
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.alert-dismiss:hover {
  opacity: 1;
}

/* --- Loading Spinner --- */
.spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 4px;
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

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

.loading-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-12);
  color: var(--color-gray-500);
}

.loading-text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* --- Modal --- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(10px);
  transition: transform var(--transition-base);
}

.modal-backdrop.active .modal {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5);
  border-bottom: 1px solid var(--color-gray-200);
}

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 0;
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-gray-500);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xl);
  transition: background-color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-gray-100);
}

.modal-close:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.modal-body {
  padding: var(--space-5);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-gray-200);
}


/* --- Badge / Tag --- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  background-color: var(--color-primary-bg);
  color: var(--color-primary);
}

.badge-success {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

.badge-error {
  background-color: var(--color-error-bg);
  color: var(--color-error);
}

.badge-warning {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
}

.badge-default {
  background-color: var(--color-gray-100);
  color: var(--color-gray-500);
}

.badge-info {
  background-color: var(--color-info-bg);
  color: var(--color-info);
}

/* --- Subscription Page --- */
.subscription-page h1 {
  margin-bottom: var(--space-6);
}

.subscription-page .card-title {
  margin-bottom: 0;
}

/* --- History List Items --- */
.history-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-gray-200);
  min-height: 44px;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.history-item:hover {
  background-color: var(--color-gray-50);
}

.history-item:last-child {
  border-bottom: none;
}

.history-item-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-bg);
  color: var(--color-primary);
  flex-shrink: 0;
}

.history-item-content {
  flex: 1;
  min-width: 0;
}

.history-item-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-800);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-item-meta {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-1);
}

.history-item-score {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  flex-shrink: 0;
}

/* --- Annotations --- */
.annotation {
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
}

.annotation-grammar {
  background-color: #fef3c7;
  border-bottom: 2px solid var(--color-warning);
}

.annotation-structure {
  background-color: #dbeafe;
  border-bottom: 2px solid var(--color-info);
}

.annotation-ai_detected {
  background-color: #fecaca;
  border-bottom: 2px solid var(--color-error);
}

.annotation-strength {
  background-color: #d1fae5;
  border-bottom: 2px solid var(--color-success);
}

.annotation-suggestion {
  background-color: #e0e7ff;
  border-bottom: 2px solid #6366f1;
}

/* --- Landing Page Sections --- */
.hero {
  text-align: center;
  padding: var(--space-12) var(--space-4);
  background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-white) 100%);
}

.hero-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-4);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section {
  padding: var(--space-12) var(--space-4);
}

.section-alt {
  background-color: var(--color-gray-100);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  text-align: center;
  margin-bottom: var(--space-8);
  color: var(--color-gray-900);
}

/* Features Grid */
.feature-card {
  text-align: center;
  padding: var(--space-6);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-4);
  background-color: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-2xl);
}

.feature-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.feature-description {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

/* Pricing */
.pricing-card {
  max-width: 400px;
  margin: 0 auto;
  text-align: center;
  border: 2px solid var(--color-primary);
}

.pricing-amount {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.pricing-period {
  font-size: var(--font-size-base);
  color: var(--color-gray-500);
}

.pricing-features {
  text-align: left;
  margin: var(--space-6) 0;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
}

/* FAQ Accordion */
.faq-item {
  border-bottom: 1px solid var(--color-gray-200);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 44px;
  padding: var(--space-4) 0;
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-800);
  text-align: left;
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-question:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.faq-icon {
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding-bottom: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: var(--line-height-relaxed);
}

.faq-item.active .faq-answer {
  display: block;
}

/* Testimonials */
.testimonial-card {
  padding: var(--space-6);
  text-align: center;
}

.testimonial-text {
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  font-style: italic;
  margin-bottom: var(--space-4);
}

.testimonial-author {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-800);
}

/* --- Dashboard --- */
.dashboard-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
}

.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.quick-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

/* --- Session Status --- */
.session-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.session-status.active {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

.session-status.expired {
  background-color: var(--color-error-bg);
  color: var(--color-error);
}

.session-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
}

/* --- Auth Pages --- */
.auth-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--navbar-height));
  padding: var(--space-6) var(--space-4);
}

.auth-card {
  width: 100%;
  max-width: 400px;
}

.auth-title {
  text-align: center;
  margin-bottom: var(--space-6);
}

.auth-footer {
  text-align: center;
  margin-top: var(--space-6);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* --- Essay Content Display --- */
.essay-content {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-800);
  white-space: pre-wrap;
  word-wrap: break-word;
  padding: var(--space-5);
  background-color: var(--color-gray-50);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
}

/* --- Recommendations List --- */
.recommendations-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.recommendation-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3);
  background-color: var(--color-gray-50);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
}

.recommendation-item::before {
  content: '💡';
  flex-shrink: 0;
}


/* ============================================================
   Tablet Breakpoint (768px+)
   ============================================================ */
@media (min-width: 768px) {
  :root {
    --navbar-height: 64px;
  }

  h1 {
    font-size: var(--font-size-4xl);
  }

  h2 {
    font-size: var(--font-size-3xl);
  }

  /* Navbar - horizontal layout on tablet+ */
  .navbar {
    padding: 0 var(--space-6);
  }

  .navbar-toggle {
    display: none;
  }

  .navbar-links {
    display: flex;
    flex-direction: row;
    position: static;
    background-color: transparent;
    border-bottom: none;
    padding: 0;
    box-shadow: none;
    margin-left: auto;
    gap: var(--space-1);
  }

  .navbar-links a,
  .navbar-links button {
    min-height: 40px;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
  }

  /* Grid - 2 columns on tablet */
  .grid-tablet-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-tablet-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Dashboard */
  .dashboard-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .quick-actions {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Hero */
  .hero {
    padding: var(--space-16) var(--space-6);
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  /* Section */
  .section {
    padding: var(--space-16) var(--space-6);
  }

  /* Container */
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }

  /* App container */
  .app-container {
    padding-top: calc(var(--navbar-height) + var(--space-8));
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

/* ============================================================
   Desktop Breakpoint (1024px+)
   ============================================================ */
@media (min-width: 1024px) {
  /* Grid - 3 columns on desktop */
  .grid-desktop-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-desktop-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Dashboard */
  .dashboard-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .quick-actions {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Hero */
  .hero {
    padding: var(--space-20) var(--space-8);
  }

  /* Section */
  .section {
    padding: var(--space-20) var(--space-8);
  }

  /* Container */
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }

  /* Score display - horizontal on desktop */
  .score-review-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--space-8);
  }

  /* History item - more spacious */
  .history-item {
    padding: var(--space-5) var(--space-6);
  }
}

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

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

/* Skip link for screen readers */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

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

/* ============================================================
   Print Styles
   ============================================================ */
@media print {
  .navbar,
  .navbar-toggle,
  .btn,
  .modal-backdrop {
    display: none !important;
  }

  .app-container {
    padding-top: 0;
  }

  body {
    background-color: white;
    color: black;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}

/* --- Review Page --- */
.review-page .annotated-text {
  font-size: var(--font-size-base);
  color: var(--color-gray-800);
}

.annotation-weakness {
  background-color: #fecaca;
  border-bottom: 2px solid var(--color-error);
}

.recommendations-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.recommendation-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-3);
  background-color: var(--color-gray-50);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  line-height: var(--line-height-relaxed);
}

.recommendation-item::before {
  content: '→';
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

/* --- Page Intro Text --- */
.page-intro {
  padding: var(--space-4) var(--space-5);
  background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-white) 100%);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary);
}

.page-intro p {
  margin-bottom: 0;
  line-height: var(--line-height-relaxed);
}

/* --- How It Works Section --- */
.how-it-works {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.how-it-works-step {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
}

.how-it-works-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

.how-it-works-content h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

.how-it-works-content p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  margin-bottom: 0;
}

@media (min-width: 768px) {
  .how-it-works {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --- History Item Actions (export links in list view) --- */
.history-item-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.history-item-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  text-decoration: none;
}

.history-item-link:hover {
  text-decoration: underline;
  color: var(--color-primary-dark);
}

.btn-xs {
  min-height: 28px;
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

/* --- History Item Summary Toggle --- */
.history-summary-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.summary-toggle-icon {
  transition: transform var(--transition-base);
}

.summary-toggle-open .summary-toggle-icon {
  transform: rotate(180deg);
}

.history-item-summary {
  margin-top: var(--space-2);
  padding: var(--space-3);
  background-color: var(--color-gray-50);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
}