/* ============================================================
   LOCAL FONT: Inter (self-hosted)
   ============================================================ */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/Inter-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/fonts/Inter-Medium.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/fonts/Inter-SemiBold.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/fonts/Inter-Bold.woff2') format('woff2');
}

/* ============================================================
   DESIGN TOKENS (unified with other extensions)
   ============================================================ */
:root {
  /* Brand */
  --color-accent:        #2563eb;
  --color-accent-hover:  #1d4ed8;
  --color-accent-light:  rgba(37, 99, 235, 0.08);

  /* Semantic */
  --color-success:       #16a34a;
  --color-success-bg:    #f0fdf4;
  --color-success-light: rgba(22, 163, 74, 0.1);
  --color-warning:       #f59e0b;
  --color-warning-bg:    #fffbeb;
  --color-warning-light: rgba(245, 158, 11, 0.1);
  --color-danger:        #ef4444;
  --color-danger-bg:     #fef2f2;
  --color-danger-light:  rgba(239, 68, 68, 0.1);

  /* Surfaces */
  --color-bg:            #f8fafc;
  --color-surface:       #ffffff;

  /* Text */
  --color-text-primary:  #1e293b;
  --color-text-secondary:#475569;
  --color-text-muted:    #94a3b8;

  /* Borders */
  --color-border:        #e2e8f0;
  --color-border-hover:  #cbd5e1;
  --color-border-focus:  var(--color-accent);

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

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;

  /* Radius */
  --radius-sm:  6px;
  --radius:     8px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  20px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-sm:  0 1px 2px 0 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);

  /* Transitions */
  --transition-fast:   0.15s ease;
  --transition:        0.2s ease;
  --transition-spring: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-3);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app {
  width: 100%;
  max-width: 100%;
}

.hidden {
  display: none !important;
}

/* Scrollbar */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--gray-100); border-radius: var(--radius-sm); }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: var(--radius-sm); }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes progressPulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.7; }
}

@keyframes scoreCountUp {
  from { opacity: 0; transform: translate(-50%, -50%) scale(0.8); }
  to   { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

/* ============================================================
   STATE CONTAINERS (loading / error)
   ============================================================ */
.state-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  text-align: center;
  gap: var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 40px var(--space-8);
  box-shadow: var(--shadow-md);
  animation: fadeInUp 0.4s ease-out;
}

.state-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}

.state-icon--error {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.state-title {
  font-size: 16px;
  font-weight: 600;
}

.state-text {
  font-size: 13px;
  color: var(--color-text-muted);
  max-width: 320px;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ============================================================
   CARD
   ============================================================ */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  animation: fadeInUp 0.4s ease-out;
}

.card-header {
  padding: var(--space-4) var(--space-5) var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.card-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.card-subtitle {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.card-body--results {
  padding: var(--space-4) var(--space-5) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* ============================================================
   ERROR STATE — back button
   ============================================================ */
.state-container .btn-secondary {
  margin-top: var(--space-2);
}

/* ============================================================
   PAT SETTINGS
   ============================================================ */
.settings-section {
  margin-bottom: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.settings-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--gray-50);
  cursor: pointer;
  user-select: none;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: background var(--transition-fast);
}

.settings-header:hover {
  background: var(--gray-100);
}

.settings-icon {
  font-size: 14px;
}

.settings-chevron {
  margin-left: auto;
  font-size: 9px;
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
}

.settings-section.is-open .settings-chevron {
  transform: rotate(180deg);
}

.settings-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 var(--space-4);
}

.settings-section.is-open .settings-body {
  max-height: 300px;
  padding: var(--space-3) var(--space-4) var(--space-4);
}

.settings-hint {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  line-height: 1.5;
}

.field-group {
  margin-bottom: var(--space-3);
}

.field-group:last-of-type {
  margin-bottom: 0;
}

.field-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}

.field-input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
  color: var(--color-text-primary);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.field-input:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.field-input::placeholder {
  color: var(--color-text-muted);
}

.btn-save-pat {
  width: 100%;
  padding: var(--space-2) var(--space-4);
  margin-top: var(--space-2);
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition-fast), opacity var(--transition-fast);
}

.btn-save-pat:hover:not(:disabled) {
  background: var(--color-accent-hover);
}

.btn-save-pat:disabled {
  opacity: 0.4;
  cursor: default;
}

.btn-save-pat.is-saving {
  pointer-events: none;
  opacity: 0.6;
}

.pat-status {
  margin-top: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: 12px;
  line-height: 1.4;
}

.pat-status.pat-ok {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.pat-status.pat-error {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

/* ============================================================
   URL INPUT SECTION
   ============================================================ */
.url-section {
  margin-bottom: var(--space-4);
}

.url-section .field-input {
  font-size: 12px;
  letter-spacing: -0.2px;
}

.field-hint {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  line-height: 1.4;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  width: 100%;
  padding: 12px var(--space-6);
  background: var(--gray-900);
  color: #f8fafc;
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast),
              opacity var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
}

.btn-primary:hover {
  opacity: 0.9;
}

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

.btn-primary:disabled {
  opacity: 0.4;
  cursor: default;
  transform: none;
}

.btn-secondary {
  padding: 10px var(--space-6);
  background: transparent;
  color: var(--color-text-secondary);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--color-border-hover);
}

.btn-full {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */
.progress-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4) 0;
}

.progress-bar-track {
  width: 100%;
  height: 6px;
  background: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-text {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
  animation: progressPulse 2s ease-in-out infinite;
  min-height: 20px;
}

/* ============================================================
   SCORE SECTION
   ============================================================ */
.score-section {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-3) var(--space-2);
}

.score-ring {
  position: relative;
  width: 90px;
  height: 90px;
  flex-shrink: 0;
}

.score-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.score-ring-bg {
  fill: none;
  stroke: var(--gray-100);
  stroke-width: 8;
}

.score-ring-fill {
  fill: none;
  stroke: var(--color-success);
  stroke-width: 8;
  stroke-linecap: round;
  /* Initial state: fully hidden (prevents flash on load) */
  stroke-dasharray: 326.73;
  stroke-dashoffset: 326.73;
  transition: stroke-dashoffset 1s cubic-bezier(0.4, 0, 0.2, 1),
              stroke 0.3s ease;
}

.score-value {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-primary);
  animation: scoreCountUp 0.5s ease-out;
}

.score-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.score-stat {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 13px;
}

.score-stat-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}

.score-stat--pass .score-stat-icon {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.score-stat--fail .score-stat-icon {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.score-stat--warn .score-stat-icon {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.score-stat-value {
  font-weight: 600;
  min-width: 16px;
}

.score-stat-label {
  color: var(--color-text-muted);
}

/* ============================================================
   RESULTS LIST
   ============================================================ */
.results-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.result-category {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.result-category-header {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-1);
  margin-bottom: var(--space-1);
}

.result-rule {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: box-shadow var(--transition-fast);
}

.result-rule:hover {
  box-shadow: var(--shadow-sm);
}

.result-rule-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  min-height: 40px;
}

.result-rule--expandable .result-rule-header {
  cursor: pointer;
}

.result-rule--expandable .result-rule-header:hover {
  background: var(--gray-50);
}

.result-rule-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}

.result-rule--pass .result-rule-icon {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.result-rule--fail .result-rule-icon {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.result-rule--warn .result-rule-icon {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.result-rule-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.result-rule-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-rule-message {
  font-size: 11px;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-rule-chevron {
  font-size: 9px;
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  padding: 0 var(--space-1);
}

.result-rule.is-expanded .result-rule-chevron {
  transform: rotate(180deg);
}

/* Violations (collapsed by default) */
.result-violations {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.result-rule.is-expanded .result-violations {
  max-height: 500px;
}

.result-violation {
  padding: var(--space-1) var(--space-3) var(--space-1) 50px;
  font-size: 12px;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--gray-100);
  line-height: 1.5;
}

.result-violation:last-child {
  padding-bottom: var(--space-2);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 360px) {
  body {
    padding: var(--space-2);
  }

  .card {
    border-radius: var(--radius);
  }

  .card-header {
    padding: var(--space-3) var(--space-4) var(--space-2);
  }

  .card-body {
    padding: var(--space-4);
  }

  .card-body--results {
    padding: var(--space-3) var(--space-4) var(--space-4);
  }

  .card-title {
    font-size: 14px;
  }

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

  .score-ring {
    width: 72px;
    height: 72px;
  }

  .score-value {
    font-size: 18px;
  }

  .result-rule-header {
    padding: var(--space-2);
  }

  .result-violation {
    padding-left: 38px;
  }
}

@media (min-width: 500px) {
  #app {
    max-width: 480px;
  }

  body {
    align-items: center;
    padding: var(--space-6) var(--space-4);
  }

  .card {
    border-radius: var(--radius-xl);
  }

  .card-header {
    padding: var(--space-5) var(--space-6) var(--space-4);
  }

  .card-body {
    padding: var(--space-6);
  }

  .card-title {
    font-size: 18px;
  }
}