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

  /* Semantic */
  --color-success:       #16a34a;
  --color-warning:       #f59e0b;
  --color-danger:        #ef4444;

  /* 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;

  /* Severity */
  --color-low:           #22c55e;
  --color-low-bg:        #f0fdf4;
  --color-low-text:      #15803d;
  --color-medium:        #f59e0b;
  --color-medium-bg:     #fffbeb;
  --color-medium-text:   #b45309;
  --color-critical:      #ef4444;
  --color-critical-bg:   #fef2f2;
  --color-critical-text: #b91c1c;

  /* 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);
  --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:   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-5) var(--space-4) 40px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app {
  width: 100%;
  max-width: 540px;
}

.hidden {
  display: none !important;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-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 toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(12px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(-50%) translateY(0); }
  to   { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ============================================================
   STATE CONTAINERS (loading / error)
   ============================================================ */
.state-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 260px;
  text-align: center;
  gap: var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 48px var(--space-8);
  box-shadow: var(--shadow-md);
  animation: fadeInUp 0.4s ease-out;
}

.state-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  flex-shrink: 0;
}

.state-icon--success {
  background: var(--color-low-bg);
  color: var(--color-low-text);
}

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

.state-title {
  font-size: 17px;
  font-weight: 600;
}

.state-text {
  font-size: 14px;
  color: var(--color-text-muted);
  max-width: 320px;
}

/* Spinner */
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ============================================================
   TOAST NOTIFICATION
   ============================================================ */
.toast {
  position: fixed;
  left: 50%;
  bottom: var(--space-6);
  transform: translateX(-50%);
  background: var(--gray-800);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  z-index: 10000;
  pointer-events: none;
  opacity: 0;
  white-space: nowrap;
}

.toast.show {
  animation: toastIn 0.25s ease-out forwards;
}

.toast.hide {
  animation: toastOut 0.2s ease-in forwards;
}

.toast-icon {
  font-size: 16px;
  flex-shrink: 0;
}

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

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

.form-header {
  padding: var(--space-5) var(--space-6) 18px;
  border-bottom: 1px solid var(--color-border);
}

.form-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.form-subtitle {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#feedback-form {
  padding: var(--space-5) var(--space-6) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* ============================================================
   FIELD GROUPS
   ============================================================ */
.field-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.field-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.required {
  color: var(--color-danger);
  margin-left: 1px;
}

.optional {
  color: var(--color-text-muted);
  font-weight: 400;
  font-size: 12px;
}

/* ============================================================
   SELECT
   ============================================================ */
.select-wrapper {
  position: relative;
}

.select-wrapper::after {
  content: '\25BE';
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--color-text-muted);
  font-size: 12px;
}

select {
  width: 100%;
  padding: 10px 36px 10px 12px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-size: 14px;
  color: var(--color-text-primary);
  appearance: none;
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  font-family: inherit;
}

select:hover {
  border-color: var(--color-border-hover);
}

select:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ============================================================
   TEXTAREA
   ============================================================ */
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  color: var(--color-text-primary);
  resize: vertical;
  min-height: 120px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  line-height: 1.5;
}

textarea:hover {
  border-color: var(--color-border-hover);
}

textarea:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.8;
}

.char-counter {
  font-size: 11px;
  color: var(--color-text-muted);
  text-align: right;
  margin-top: -3px;
}

.char-counter.near-limit {
  color: var(--color-medium-text);
}

/* ============================================================
   SEVERITY CHIPS
   ============================================================ */
.severity-options {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.severity-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: var(--space-2) 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-primary);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), background var(--transition-fast),
              color var(--transition-fast), box-shadow var(--transition-fast);
  user-select: none;
}

.severity-chip input[type="radio"] {
  display: none;
}

.chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  transition: background var(--transition-fast);
}

.severity-chip--low    .chip-dot { background: var(--color-low); }
.severity-chip--medium .chip-dot { background: var(--color-medium); }
.severity-chip--critical .chip-dot { background: var(--color-critical); }

/* Hover */
.severity-chip--low:hover     { border-color: var(--color-low); }
.severity-chip--medium:hover  { border-color: var(--color-medium); }
.severity-chip--critical:hover { border-color: var(--color-critical); }

/* Selected */
.severity-chip--low.is-selected {
  border-color: var(--color-low);
  background: var(--color-low-bg);
  color: var(--color-low-text);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.severity-chip--medium.is-selected {
  border-color: var(--color-medium);
  background: var(--color-medium-bg);
  color: var(--color-medium-text);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

.severity-chip--critical.is-selected {
  border-color: var(--color-critical);
  background: var(--color-critical-bg);
  color: var(--color-critical-text);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* ============================================================
   PASTE ZONE
   ============================================================ */
.paste-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-4);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  position: relative;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.paste-zone:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

.paste-zone:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-accent-light);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.paste-zone.has-image {
  border-style: solid;
  border-color: var(--color-border);
  padding: var(--space-3);
  background: transparent;
}

.paste-zone.has-image:hover {
  background: transparent;
}

.paste-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.paste-icon {
  font-size: 24px;
  margin-bottom: 2px;
  opacity: 0.7;
}

.paste-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
}

.paste-hint {
  font-size: 11px;
  opacity: 0.65;
}

.paste-preview {
  position: relative;
  display: inline-block;
  max-width: 100%;
}

.paste-preview img {
  max-width: 100%;
  max-height: 200px;
  border-radius: var(--radius-sm);
  display: block;
  object-fit: contain;
}

.btn-remove {
  position: absolute;
  top: -9px;
  right: -9px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid white;
  background: var(--color-danger);
  color: white;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.btn-remove:hover {
  background: #dc2626;
  transform: scale(1.1);
}

.field-error {
  font-size: 12px;
  color: var(--color-danger);
  margin-top: -3px;
}

/* ============================================================
   FORM ACTIONS
   ============================================================ */
.form-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.submit-error {
  font-size: 13px;
  color: var(--color-critical-text);
  background: var(--color-critical-bg);
  border: 1px solid #fecaca;
  border-left: 4px solid var(--color-danger);
  padding: 9px 12px;
  border-radius: var(--radius);
  line-height: 1.4;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  width: 100%;
  padding: 12px var(--space-6);
  background: var(--color-accent);
  color: white;
  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),
              box-shadow var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 46px;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

.btn-primary:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn-secondary {
  padding: 10px var(--space-6);
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--color-accent-light);
}

/* Inline spinner inside submit button */
.btn-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  flex-shrink: 0;
}