/* ==========================================================================
   SISTEM ASESMEN PRAKTIKUM — DART OOP (PROFESSIONAL INSTITUTIONAL THEME)
   ========================================================================== */

:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Menlo, Monaco, 'Courier New', monospace;

  /* Neutrals */
  --slate-50:  #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;

  /* Brand / Primary */
  --primary-50:  #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;

  /* State Colors */
  --success-bg:     #f0fdf4;
  --success-border: #bbf7d0;
  --success-text:   #15803d;
  --success-dot:    #22c55e;

  --warning-bg:     #fefce8;
  --warning-border: #fde68a;
  --warning-text:   #b45309;
  --warning-dot:    #f59e0b;

  --danger-bg:     #fef2f2;
  --danger-border: #fecaca;
  --danger-text:   #b91c1c;
  --danger-hover:  #991b1b;
  --danger-btn:    #dc2626;

  /* UI Tokens */
  --body-bg: var(--slate-50);
  --card-bg: #ffffff;
  --text-main: var(--slate-900);
  --text-sub: var(--slate-600);
  --text-muted: var(--slate-400);
  --border-color: var(--slate-200);

  /* Elevasi Presisi (Non-AI Slop) */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.08);
}

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

html, body {
  min-height: 100vh;
  font-family: var(--font-sans);
  background-color: var(--body-bg);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar halus */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--slate-100);
}
::-webkit-scrollbar-thumb {
  background: var(--slate-300);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--slate-400);
}

/* Utilitas Tampilan */
.hidden { display: none !important; }
.page { display: none; }
.page.active { display: block; }
.font-mono { font-family: var(--font-mono); }
.uppercase { text-transform: uppercase; }

/* ==========================================================================
   GLOBAL NAVBAR
   ========================================================================== */
.global-header {
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-xs);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background-color: var(--primary-50);
  color: var(--primary-600);
  border: 1px solid var(--primary-200);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-sub);
  font-weight: 500;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.session-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: var(--slate-100);
  border: 1px solid var(--slate-200);
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 0.8rem;
}

.session-dot {
  width: 7px;
  height: 7px;
  background-color: var(--success-dot);
  border-radius: 50%;
}

.session-label {
  color: var(--text-muted);
  font-weight: 500;
}

.session-name {
  color: var(--text-main);
  font-weight: 600;
}

.btn-outline-danger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: #ffffff;
  border: 1px solid var(--slate-300);
  color: var(--slate-700);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-outline-danger:hover {
  background-color: var(--danger-bg);
  border-color: var(--danger-border);
  color: var(--danger-text);
}

/* ==========================================================================
   PAGE: LOGIN / KEAMANAN TOKEN
   ========================================================================== */
.login-wrapper {
  min-height: calc(100vh - 20px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
}

.login-card {
  width: 100%;
  max-width: 440px;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 36px 32px;
}

.login-header {
  text-align: center;
  margin-bottom: 28px;
}

.login-badge-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  background-color: var(--primary-50);
  border: 1px solid var(--primary-200);
  border-radius: 12px;
  color: var(--primary-600);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-header h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.login-header p {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.45;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--slate-700);
}

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

.label-required {
  color: var(--danger-btn);
}

.form-control {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--text-main);
  background-color: #ffffff;
  border: 1px solid var(--slate-300);
  border-radius: 6px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus {
  border-color: var(--primary-600);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.token-input-wrapper {
  position: relative;
}

.token-input-wrapper input {
  letter-spacing: 0.1em;
  font-weight: 600;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.login-error {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
}

.btn-primary-block {
  width: 100%;
  height: 44px;
  background-color: var(--primary-600);
  color: #ffffff;
  border: none;
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 4px;
}

.btn-primary-block:hover {
  background-color: var(--primary-700);
}

.login-footer {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--slate-200);
}

.security-notice {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--slate-500);
}

/* ==========================================================================
   PAGE: SELECT PACKAGE (DASHBOARD)
   ========================================================================== */
.dashboard-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}

/* Petunjuk Ujian Card */
.instructions-card {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary-600);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-xs);
}

.instructions-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.instructions-icon {
  color: var(--primary-600);
}

.instructions-header h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
}

.instructions-body {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.step-num {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  background-color: var(--slate-100);
  border: 1px solid var(--slate-300);
  color: var(--slate-700);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-item p {
  font-size: 0.8rem;
  color: var(--text-sub);
  line-height: 1.45;
}

.step-item code {
  background-color: var(--slate-100);
  border: 1px solid var(--slate-200);
  padding: 1px 4px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--slate-800);
}

/* Section Title Bar */
.section-title-bar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--slate-200);
}

.section-heading {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.section-subheading {
  font-size: 0.825rem;
  color: var(--text-sub);
  margin-top: 2px;
}

.package-stats {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stat-pill {
  background-color: #ffffff;
  border: 1px solid var(--slate-200);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--slate-600);
}

.stat-pill strong {
  color: var(--text-main);
}

/* Category Filter Bar */
.category-filter-bar {
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
}

.filter-pills {
  display: inline-flex;
  gap: 4px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 4px;
  border-radius: 8px;
  box-shadow: var(--shadow-xs);
}

.filter-pill {
  background: transparent;
  border: none;
  padding: 6px 14px;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-sub);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.filter-pill:hover {
  color: var(--text-main);
  background-color: var(--slate-100);
}

.filter-pill.active {
  background-color: var(--primary-600);
  color: #ffffff;
}

/* Grid Paket Soal (Professional Cards) */
.package-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.packet-card {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 18px 18px 14px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
  box-shadow: var(--shadow-xs);
  user-select: none;
  outline: none;
}

.packet-card:hover {
  border-color: var(--primary-500);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.packet-card:focus-visible {
  border-color: var(--primary-600);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.packet-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.packet-badge-number {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-700);
  background-color: var(--primary-50);
  border: 1px solid var(--primary-200);
  padding: 3px 8px;
  border-radius: 5px;
}

.packet-badges-right {
  display: flex;
  align-items: center;
  gap: 5px;
}

.packet-category-badge {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
}

.packet-category-badge.category-dasar {
  background-color: var(--slate-100);
  color: var(--slate-700);
  border: 1px solid var(--slate-300);
}

.packet-category-badge.category-enkapsulasi {
  background-color: #f5f3ff;
  color: #6d28d9;
  border: 1px solid #ddd6fe;
}

.packet-status-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.packet-status-badge.status-ready {
  background-color: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success-text);
}

.packet-status-badge.status-modified {
  background-color: var(--warning-bg);
  border: 1px solid var(--warning-border);
  color: var(--warning-text);
}

.packet-status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.status-ready .packet-status-dot { background-color: var(--success-dot); }
.status-modified .packet-status-dot { background-color: var(--warning-dot); }

.packet-card-body {
  margin-bottom: 16px;
}

.packet-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.packet-card-desc {
  font-size: 0.775rem;
  color: var(--text-sub);
}

.packet-card-footer {
  border-top: 1px solid var(--slate-100);
  padding-top: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.packet-action-text {
  font-size: 0.775rem;
  font-weight: 600;
  color: var(--primary-600);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.15s;
}

.packet-card:hover .packet-action-text {
  gap: 7px;
}

/* ==========================================================================
   PAGE: CODE EDITOR (WORKBENCH IDE)
   ========================================================================== */
.editor-workbench {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 60px);
  background-color: #ffffff;
}

/* Workbench Top Header */
.workbench-header {
  height: 48px;
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  flex-shrink: 0;
}

.workbench-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-workbench-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--slate-50);
  border: 1px solid var(--slate-300);
  color: var(--slate-700);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-workbench-back:hover {
  background-color: var(--slate-100);
  color: var(--slate-900);
  border-color: var(--slate-400);
}

.workbench-divider {
  width: 1px;
  height: 20px;
  background-color: var(--slate-200);
}

.workbench-title-info {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.package-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.package-title-display {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.workbench-header-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.autosave-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-sub);
}

.autosave-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--success-dot);
}

.btn-workbench-reset {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-workbench-reset:hover {
  background-color: #fee2e2;
  border-color: #fca5a5;
  color: var(--danger-hover);
}

/* Workbench Tab Bar */
.workbench-tabbar {
  display: flex;
  background-color: var(--slate-100);
  border-bottom: 1px solid var(--border-color);
  padding: 0 8px;
  height: 38px;
  flex-shrink: 0;
  gap: 2px;
}

.workbench-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  background: transparent;
  border: none;
  border-top: 2px solid transparent;
  color: var(--slate-600);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
}

.workbench-tab:hover {
  color: var(--slate-900);
  background-color: rgba(255, 255, 255, 0.5);
}

.workbench-tab.active {
  background-color: #ffffff;
  color: var(--primary-700);
  border-top-color: var(--primary-600);
  border-left: 1px solid var(--slate-200);
  border-right: 1px solid var(--slate-200);
  font-weight: 600;
}

.file-icon-dart {
  color: var(--primary-600);
  display: flex;
  align-items: center;
}

/* Editor Canvas Container */
.editor-container {
  flex: 1;
  display: flex;
  overflow: hidden;
  background-color: #ffffff;
  position: relative;
}

/* Line Number Gutter */
.editor-gutter {
  width: 52px;
  min-width: 52px;
  background-color: #fbfcfe;
  border-right: 1px solid var(--border-color);
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  padding: 14px 0;
  flex-shrink: 0;
}

.editor-gutter div {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 22px;
  color: var(--slate-400);
  text-align: right;
  padding-right: 12px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  box-sizing: border-box;
  transition: all 0.15s;
}

.editor-gutter div.gutter-modified {
  color: #047857;
  font-weight: 700;
  background-color: rgba(16, 185, 129, 0.14);
  box-shadow: inset 3px 0 0 #10b981;
}

.gutter-mod-dot {
  font-size: 6px;
  color: #10b981;
  margin-right: 4px;
  line-height: 1;
}

/* Code Area (Overlay Stack) */
.editor-content-area {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.code-highlight,
.code-editor-input {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 22px;
  white-space: pre;
  overflow-wrap: normal;
  word-wrap: normal;
  tab-size: 2;
  -moz-tab-size: 2;
  border: none;
  letter-spacing: 0;
}

/* Highlight layer behind */
.code-highlight {
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
  color: var(--slate-800);
  background: transparent;
}

/* Individual code lines for student answer highlighting */
.code-highlight .code-line {
  display: block;
  height: 22px;
  min-height: 22px;
  max-height: 22px;
  line-height: 22px;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  white-space: pre;
}

/* Line modified by student */
.code-highlight .code-line.line-modified {
  background: linear-gradient(90deg, rgba(16, 185, 129, 0.18) 0%, rgba(16, 185, 129, 0.08) 60%, rgba(16, 185, 129, 0.02) 100%);
  box-shadow: inset 3px 0 0 #059669;
  border-radius: 0 4px 4px 0;
  color: #064e3b;
  font-weight: 600;
}

.code-highlight .code-line.line-modified .hl-fn {
  color: #059669;
  font-weight: 700;
}

.code-highlight .code-line.line-modified .hl-type {
  color: #0e7490;
  font-weight: 700;
}

.code-highlight .code-line.line-modified .hl-kw {
  color: #0033b3;
  font-weight: 700;
}

.code-highlight .code-line.line-modified .hl-str {
  color: #047857;
}

/* Input textarea on top */
.code-editor-input {
  overflow: auto;
  color: transparent;
  caret-color: var(--slate-900);
  background: transparent;
  outline: none;
  resize: none;
  z-index: 1;
  -webkit-text-fill-color: transparent;
}

.code-editor-input::selection {
  background: rgba(37, 99, 235, 0.18);
  -webkit-text-fill-color: transparent;
}

.code-editor-input::-moz-selection {
  background: rgba(37, 99, 235, 0.18);
}

/* Caret Measurer (Hidden helper) */
.caret-measurer {
  position: absolute;
  top: 0;
  left: 0;
  visibility: hidden;
  pointer-events: none;
  white-space: pre;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 22px;
  letter-spacing: 0;
}

/* ==========================================================================
   IDE AUTOCOMPLETE / INTELLISENSE POPUP
   ========================================================================== */
.autocomplete-popup {
  position: absolute;
  top: 40px;
  left: 20px;
  z-index: 50;
  min-width: 240px;
  max-width: 380px;
  background-color: #ffffff;
  border: 1px solid var(--slate-300);
  border-radius: 6px;
  box-shadow: 0 10px 25px -3px rgba(15, 23, 42, 0.15), 0 4px 6px -2px rgba(15, 23, 42, 0.05);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-family: var(--font-mono);
  animation: acFadeIn 0.12s ease-out;
}

.autocomplete-popup.hidden {
  display: none !important;
}

@keyframes acFadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.autocomplete-list {
  max-height: 220px;
  overflow-y: auto;
  padding: 4px 0;
}

.autocomplete-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  cursor: pointer;
  user-select: none;
  font-size: 12.5px;
  line-height: 1.4;
  transition: background-color 0.08s;
  border-left: 2px solid transparent;
}

.autocomplete-item:hover {
  background-color: #f1f5f9;
}

.autocomplete-item.active {
  background-color: #e0f2fe;
  border-left-color: var(--primary-600);
}

.ac-icon {
  width: 17px;
  height: 17px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.ac-icon.icon-class {
  background-color: #fef3c7;
  color: #b45309;
}

.ac-icon.icon-method {
  background-color: #ede9fe;
  color: #7c3aed;
}

.ac-icon.icon-property {
  background-color: #e0f2fe;
  color: #0284c7;
}

.ac-icon.icon-keyword {
  background-color: #f1f5f9;
  color: #475569;
}

.ac-icon.icon-type {
  background-color: #dcfce7;
  color: #15803d;
}

.ac-label {
  flex: 1;
  color: #0f172a;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ac-label .ac-match {
  color: var(--primary-700);
  font-weight: 700;
  text-decoration: underline;
}

.ac-type {
  font-size: 11px;
  color: var(--slate-400);
  flex-shrink: 0;
  font-style: italic;
}

.autocomplete-footer {
  background-color: #f8fafc;
  border-top: 1px solid var(--slate-200);
  padding: 4px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 10px;
  color: var(--slate-500);
}

.ac-hint {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.ac-hint kbd {
  background-color: #ffffff;
  border: 1px solid var(--slate-300);
  border-radius: 3px;
  padding: 1px 3px;
  font-family: inherit;
  font-size: 9.5px;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
}

/* ==========================================================================
   DART SYNTAX HIGHLIGHTING (CLEAN LIGHT THEME / JETBRAINS / VS CODE LIGHT)
   ========================================================================== */
.hl-kw   { color: #0033b3; font-weight: 600; }   /* Keywords: class, void, if, return */
.hl-type { color: #00627a; font-weight: 500; }   /* Types: String, int, double */
.hl-str  { color: #067d17; }                     /* Strings */
.hl-cmt  { color: #6a737d; font-style: italic; } /* Comments */
.hl-num  { color: #1750eb; }                     /* Numbers */
.hl-fn   { color: #7a3e9d; }                     /* Built-in methods */

/* Workbench Status Bar */
.workbench-statusbar {
  height: 28px;
  background-color: var(--slate-100);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.725rem;
  color: var(--slate-600);
}

.statusbar-left,
.statusbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-separator {
  color: var(--slate-300);
}

.status-dot-active {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--success-dot);
  margin-right: 4px;
}

.status-state-badge {
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.7rem;
}

.status-state-badge.state-default {
  color: var(--success-text);
  background-color: var(--success-bg);
}

.status-state-badge.state-modified {
  color: var(--warning-text);
  background-color: var(--warning-bg);
}

.badge-answer-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--slate-400);
  margin-right: 4px;
}

.status-item.has-answers {
  color: #047857 !important;
  font-weight: 600;
  background-color: #ecfdf5;
  padding: 1px 7px;
  border-radius: 4px;
  border: 1px solid #a7f3d0;
}

.status-item.has-answers .badge-answer-dot {
  background-color: #10b981;
}

/* Challenge / Notification Banner */
.challenge-banner {
  background-color: #eff6ff;
  border-bottom: 1px solid #bfdbfe;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: #1e3a8a;
  animation: bannerSlideDown 0.2s ease-out;
}

.challenge-banner.hidden {
  display: none !important;
}

@keyframes bannerSlideDown {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.challenge-banner-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #2563eb;
  flex-shrink: 0;
}

.challenge-banner-content {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.challenge-banner-content strong {
  color: #1d4ed8;
  font-weight: 700;
}

.challenge-banner-content span {
  color: #1e40af;
}

.btn-close-banner {
  background: transparent;
  border: none;
  font-size: 1.25rem;
  line-height: 1;
  color: #64748b;
  cursor: pointer;
  padding: 0 4px;
  border-radius: 4px;
}

.btn-close-banner:hover {
  color: #0f172a;
  background-color: rgba(0, 0, 0, 0.05);
}

/* ==========================================================================
   RESET MODAL DIALOG
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s, visibility 0.15s;
}

.modal-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  width: 90%;
  max-width: 440px;
  background-color: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  padding: 24px;
  transform: scale(0.97);
  transition: transform 0.15s;
}

.modal-dialog-lg {
  max-width: 560px;
}

.modal-overlay.visible .modal-dialog {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 14px;
}

.modal-alert-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  background-color: #eff6ff;
  border: 1px solid #bfdbfe;
  color: var(--primary-600);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-header-text h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.modal-header-text p {
  font-size: 0.775rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.modal-instruction-desc {
  font-size: 0.84rem;
  color: var(--slate-600);
  line-height: 1.5;
  margin-bottom: 14px;
}

.modal-instruction-desc code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background-color: var(--slate-100);
  padding: 2px 5px;
  border-radius: 4px;
  color: var(--primary-700);
  border: 1px solid var(--slate-200);
}

.reset-options-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.reset-option-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 14px;
  background-color: #ffffff;
  border: 1.5px solid var(--slate-200);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.reset-option-card:hover {
  border-color: var(--primary-400);
  background-color: #f8fafc;
}

.reset-option-card.active {
  border-color: var(--primary-600);
  background-color: #f0f7ff;
  box-shadow: 0 0 0 1px var(--primary-600);
}

.reset-option-card input[type="radio"] {
  margin-top: 3px;
  accent-color: var(--primary-600);
  cursor: pointer;
}

.reset-option-body {
  flex: 1;
}

.reset-option-headline {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 2px;
}

.reset-opt-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--slate-800);
}

.reset-opt-desc {
  font-size: 0.775rem;
  color: var(--slate-500);
  line-height: 1.35;
  margin: 0 !important;
}

.reset-badge-recommended {
  font-size: 0.675rem;
  font-weight: 700;
  background-color: #dcfce7;
  color: #15803d;
  border: 1px solid #bbf7d0;
  padding: 1px 6px;
  border-radius: 4px;
  text-transform: uppercase;
}

.reset-badge-tag {
  font-size: 0.675rem;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 4px;
}

.tag-object {
  background-color: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

.tag-method {
  background-color: #fef3c7;
  color: #b45309;
  border: 1px solid #fde68a;
}

.tag-both {
  background-color: #fee2e2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

.tag-full {
  background-color: var(--slate-100);
  color: var(--slate-600);
  border: 1px solid var(--slate-200);
}

.modal-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.btn-modal-secondary {
  padding: 8px 16px;
  background-color: var(--slate-100);
  border: 1px solid var(--slate-300);
  color: var(--slate-700);
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-modal-secondary:hover {
  background-color: var(--slate-200);
  color: var(--slate-900);
}

.btn-modal-primary {
  padding: 8px 18px;
  background-color: var(--primary-600);
  border: 1px solid var(--primary-600);
  color: #ffffff;
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-modal-primary:hover {
  background-color: var(--primary-700);
  border-color: var(--primary-700);
}

.btn-modal-danger {
  padding: 8px 16px;
  background-color: var(--danger-btn);
  border: 1px solid var(--danger-btn);
  color: #ffffff;
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-modal-danger:hover {
  background-color: var(--danger-hover);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 900px) {
  .instructions-body {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (max-width: 640px) {
  .header-container {
    padding: 0 16px;
  }
  .brand-subtitle {
    display: none;
  }
  .dashboard-container {
    padding: 20px 16px 40px;
  }
  .section-title-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .package-grid {
    grid-template-columns: 1fr;
  }
  .editor-gutter {
    width: 42px;
    min-width: 42px;
  }
  .editor-gutter div {
    font-size: 11.5px;
    padding-right: 8px;
  }
  .code-highlight, .code-editor-input {
    font-size: 12px;
    padding: 12px;
  }
  .statusbar-left .status-item:first-child,
  .statusbar-left .status-separator:first-of-type {
    display: none;
  }
}