/* ==================== CSS Reset & Base ==================== */
    *, *::before, *::after {
      box-sizing: border-box;
    }

    :root {
      --primary: #00ACC1;
      --primary-dark: #00838F;
      --primary-light: #B2EBF2;
      --primary-bg: #E0F7FA;
      --error: #D32F2F;
      --error-bg: #FFEBEE;
      --success: #388E3C;
      --success-bg: #E8F5E9;
      --warning: #F57C00;
      --warning-bg: #FFF3E0;
      --gray-50: #FAFAFA;
      --gray-100: #F5F5F5;
      --gray-200: #EEEEEE;
      --gray-300: #E0E0E0;
      --gray-400: #BDBDBD;
      --gray-500: #9E9E9E;
      --gray-600: #757575;
      --gray-700: #616161;
      --gray-800: #424242;
      --gray-900: #212121;
      --white: #FFFFFF;
      --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
      --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
      --shadow-md: 0 4px 6px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);
      --radius: 8px;
      --radius-sm: 4px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
      line-height: 1.5;
      color: var(--gray-900);
      background: var(--gray-100);
      margin: 0;
      padding: 0;
      min-height: 100vh;
    }

    /* ==================== Layout ==================== */
    .container {
      max-width: 600px;
      margin: 0 auto;
      padding: 24px 16px;
    }

    header {
      text-align: center;
      margin-bottom: 32px;
    }

    header h1 {
      font-size: 1.75rem;
      font-weight: 600;
      color: var(--gray-900);
      margin: 0 0 8px 0;
    }

    header p {
      color: var(--gray-600);
      margin: 0;
    }

    /* ==================== Card ==================== */
    .card {
      background: var(--white);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 24px;
      margin-bottom: 16px;
    }

    #eventForm {
      margin-bottom: 16px;
    }

    .card-title {
      font-size: 1rem;
      font-weight: 600;
      color: var(--gray-800);
      margin: 0 0 16px 0;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--gray-200);
    }

    /* ==================== Form Elements ==================== */
    .form-group {
      margin-bottom: 16px;
    }

    .form-group:last-child {
      margin-bottom: 0;
    }

    label {
      display: block;
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--gray-700);
      margin-bottom: 6px;
    }

    .label-optional {
      font-weight: 400;
      color: var(--gray-500);
    }

    input[type="text"],
    input[type="url"],
    input[type="date"],
    input[type="time"],
    input[type="number"],
    select,
    textarea {
      width: 100%;
      padding: 10px 12px;
      font-size: 1rem;
      font-family: inherit;
      border: 1px solid var(--gray-300);
      border-radius: var(--radius-sm);
      background: var(--white);
      color: var(--gray-900);
      transition: border-color 0.15s, box-shadow 0.15s;
    }

    input:focus,
    select:focus,
    textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px var(--primary-light);
    }

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

    textarea {
      resize: vertical;
      min-height: 80px;
    }

    .form-row {
      display: flex;
      gap: 12px;
    }

    .form-row .form-group {
      flex: 1;
    }

    /* ==================== Emoji Picker ==================== */
    .title-input-wrapper {
      position: relative;
      display: flex;
      gap: 8px;
      align-items: center;
    }

    .title-input-wrapper input[type="text"] {
      flex: 1;
    }

    .emoji-picker-btn {
      width: 42px;
      height: 42px;
      padding: 0;
      border: 1px solid var(--gray-300);
      border-radius: var(--radius-sm);
      background: var(--white);
      font-size: 1.25rem;
      cursor: pointer;
      transition: border-color 0.15s, background-color 0.15s;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

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

    .emoji-picker {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      z-index: 100;
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: var(--radius);
      box-shadow: var(--shadow-md);
      width: 280px;
      max-height: 300px;
      margin-top: 4px;
    }

    .emoji-picker.show {
      display: block;
    }

    .emoji-picker-header {
      padding: 10px 12px;
      border-bottom: 1px solid var(--gray-200);
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--gray-700);
    }

    .emoji-grid {
      display: grid;
      grid-template-columns: repeat(7, 1fr);
      gap: 4px;
      padding: 12px;
      max-height: 220px;
      overflow-y: auto;
    }

    .emoji-item {
      width: 32px;
      height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      border: none;
      background: transparent;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: background-color 0.15s;
    }

    .emoji-item:hover {
      background: var(--gray-100);
    }

    .emoji-item:focus {
      outline: none;
      background: var(--primary-light);
    }

    /* ==================== Date Presets ==================== */
    .date-presets {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .preset-btn {
      padding: 6px 12px;
      font-size: 0.8125rem;
      font-weight: 500;
      color: var(--gray-600);
      background: var(--gray-100);
      border: 1px solid var(--gray-200);
      border-radius: 16px;
      cursor: pointer;
      transition: all 0.15s ease;
    }

    .preset-btn:hover {
      color: var(--gray-800);
      background: var(--gray-200);
      border-color: var(--gray-300);
    }

    .preset-btn:focus {
      outline: none;
      box-shadow: 0 0 0 2px var(--primary-light);
    }

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

    .preset-btn.active:hover {
      background: var(--primary-dark);
      border-color: var(--primary-dark);
    }

    /* ==================== Duration Helper ==================== */
    .duration-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .duration-presets {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .duration-btn {
      padding: 6px 12px;
      font-size: 0.8125rem;
      font-weight: 500;
      color: var(--gray-600);
      background: var(--gray-100);
      border: 1px solid var(--gray-200);
      border-radius: 16px;
      cursor: pointer;
      transition: all 0.15s ease;
    }

    .duration-btn:hover {
      background: var(--gray-200);
      border-color: var(--gray-300);
    }

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

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

    /* ==================== Checkbox & Radio ==================== */
    .checkbox-group,
    .radio-group {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .checkbox-group input[type="checkbox"],
    .radio-group input[type="radio"] {
      width: 18px;
      height: 18px;
      accent-color: var(--primary);
      cursor: pointer;
    }

    .checkbox-group label,
    .radio-group label {
      margin-bottom: 0;
      cursor: pointer;
      font-weight: 400;
    }

    .checkbox-inline {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .radio-stack {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .radio-option {
      display: flex;
      align-items: flex-start;
      gap: 8px;
    }

    .radio-option input[type="radio"] {
      margin-top: 2px;
    }

    .radio-option-content {
      flex: 1;
    }

    .radio-option-label {
      font-weight: 500;
      color: var(--gray-800);
    }

    .radio-option-hint {
      font-size: 0.75rem;
      color: var(--gray-500);
      margin-top: 2px;
    }

    /* ==================== Day Picker (Weekly) ==================== */
    .day-picker {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }

    .day-picker-btn {
      width: 40px;
      height: 40px;
      border: 2px solid var(--gray-300);
      border-radius: var(--radius-sm);
      background: var(--white);
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--gray-600);
      cursor: pointer;
      transition: all 0.15s;
    }

    .day-picker-btn:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

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

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

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

    /* ==================== Toggle Switch ==================== */
    .toggle-section {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 0;
    }

    .toggle-label {
      font-weight: 500;
      color: var(--gray-800);
    }

    .toggle-switch {
      position: relative;
      width: 48px;
      height: 26px;
    }

    .toggle-switch input {
      opacity: 0;
      width: 0;
      height: 0;
    }

    .toggle-slider {
      position: absolute;
      cursor: pointer;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: var(--gray-300);
      border-radius: 26px;
      transition: 0.2s;
    }

    .toggle-slider::before {
      position: absolute;
      content: "";
      height: 20px;
      width: 20px;
      left: 3px;
      bottom: 3px;
      background: var(--white);
      border-radius: 50%;
      transition: 0.2s;
      box-shadow: var(--shadow-sm);
    }

    .toggle-switch input:checked + .toggle-slider {
      background: var(--primary);
    }

    .toggle-switch input:checked + .toggle-slider::before {
      transform: translateX(22px);
    }

    .toggle-switch input:focus + .toggle-slider {
      box-shadow: 0 0 0 3px var(--primary-light);
    }

    /* ==================== Collapsible Content ==================== */
    .collapsible-content {
      display: none;
      padding-top: 16px;
      border-top: 1px solid var(--gray-200);
      margin-top: 12px;
    }

    .collapsible-content.show {
      display: block;
    }

    /* ==================== Multiple Reminders ==================== */
    .reminder-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
      margin-bottom: 12px;
    }

    .reminder-item {
      display: flex;
      align-items: center;
      gap: 8px;
      background: var(--gray-50);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--gray-200);
    }

    .reminder-item select {
      flex: 1;
      padding: 6px 8px;
      font-size: 0.875rem;
      border: 1px solid var(--gray-300);
      border-radius: var(--radius-sm);
      background: var(--white);
    }

    .reminder-remove-btn {
      padding: 4px 8px;
      font-size: 1rem;
      color: var(--gray-500);
      background: transparent;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.15s ease;
      line-height: 1;
    }

    .reminder-remove-btn:hover {
      color: var(--error);
      background: var(--error-bg);
    }

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

    .reminder-hint {
      font-size: 0.75rem;
      color: var(--gray-500);
      margin: 8px 0 0 0;
    }

    .reminder-hint.hidden {
      display: none;
    }

    .btn-icon {
      font-weight: bold;
      margin-right: 4px;
    }

    #addReminderBtn.hidden {
      display: none;
    }

    /* ==================== Warning Box ==================== */
    .warning-box {
      background: var(--warning-bg);
      border: 1px solid var(--warning);
      border-radius: var(--radius-sm);
      padding: 10px 12px;
      font-size: 0.875rem;
      color: var(--warning);
      margin-top: 8px;
      display: none;
    }

    .warning-box.show {
      display: block;
    }

    /* ==================== Event Card Preview ==================== */
    .event-card-preview {
      margin-bottom: 20px;
    }

    .event-card {
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: var(--radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      overflow: hidden;
    }

    .event-card-header {
      display: flex;
      align-items: stretch;
    }

    .event-card-color-bar {
      width: 6px;
      background: var(--primary);
      flex-shrink: 0;
    }

    .event-card-title {
      flex: 1;
      padding: 12px 16px;
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--gray-900);
      word-break: break-word;
    }

    .event-card-body {
      padding: 0 16px 12px 16px;
    }

    .event-card-row {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      padding: 6px 0;
      font-size: 0.9rem;
      color: var(--gray-700);
    }

    .event-card-row svg {
      flex-shrink: 0;
      color: var(--gray-500);
      margin-top: 2px;
    }

    .event-card-row span {
      flex: 1;
      line-height: 1.4;
    }

    .event-card-description span {
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      color: var(--gray-600);
      font-size: 0.85rem;
    }

    .event-card-badges {
      display: flex;
      gap: 8px;
      padding: 8px 16px 12px 16px;
      flex-wrap: wrap;
    }

    .event-card-badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 4px 10px;
      font-size: 0.75rem;
      font-weight: 500;
      border-radius: 12px;
      background: var(--gray-100);
      color: var(--gray-700);
    }

    .event-card-badge svg {
      flex-shrink: 0;
    }

    .event-card-badge.badge-recurring {
      background: rgba(0, 156, 163, 0.1);
      color: var(--primary);
    }

    .event-card-badge.badge-reminder {
      background: rgba(247, 183, 49, 0.15);
      color: #b5850a;
    }

    /* ==================== Calendar Grid ==================== */
    .calendar-container {
      margin-top: 16px;
    }

    .calendar-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 16px;
    }

    .calendar-nav {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .calendar-nav-btn {
      width: 32px;
      height: 32px;
      border: 1px solid var(--gray-300);
      border-radius: var(--radius-sm);
      background: var(--white);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      color: var(--gray-600);
      transition: all 0.15s;
    }

    .calendar-nav-btn:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

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

    .calendar-month-year {
      font-weight: 600;
      font-size: 1rem;
      color: var(--gray-800);
      min-width: 140px;
      text-align: center;
    }

    .calendar-grid {
      display: grid;
      grid-template-columns: repeat(7, 1fr);
      gap: 4px;
    }

    .calendar-weekday {
      text-align: center;
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--gray-500);
      padding: 8px 0;
    }

    .calendar-day {
      aspect-ratio: 1;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.875rem;
      border-radius: var(--radius-sm);
      border: 2px solid transparent;
      background: var(--white);
      cursor: default;
      transition: all 0.15s;
    }

    .calendar-day.other-month {
      color: var(--gray-400);
    }

    .calendar-day.event-day {
      background: var(--primary-bg);
      color: var(--primary-dark);
      font-weight: 600;
      cursor: pointer;
    }

    .calendar-day.event-day:hover {
      border-color: var(--primary);
    }

    .calendar-day.event-day:focus {
      outline: none;
      box-shadow: 0 0 0 3px var(--primary-light);
    }

    .calendar-day.exception {
      background: var(--error-bg);
      color: var(--error);
      text-decoration: line-through;
    }

    .calendar-day.today {
      border-color: var(--primary);
    }

    .calendar-info {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 12px;
      padding-top: 12px;
      border-top: 1px solid var(--gray-200);
      font-size: 0.875rem;
      color: var(--gray-600);
    }

    .calendar-legend {
      display: flex;
      gap: 16px;
    }

    .legend-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .legend-dot {
      width: 12px;
      height: 12px;
      border-radius: 2px;
    }

    .legend-dot.event {
      background: var(--primary-bg);
      border: 1px solid var(--primary);
    }

    .legend-dot.exception {
      background: var(--error-bg);
      border: 1px solid var(--error);
    }

    /* ==================== Exception List ==================== */
    .exception-toggle {
      display: flex;
      align-items: center;
      gap: 6px;
      cursor: pointer;
      user-select: none;
    }

    .exception-toggle:hover {
      color: var(--primary);
    }

    .exception-toggle:focus {
      outline: none;
      color: var(--primary);
    }

    .exception-toggle-icon {
      font-size: 0.625rem;
      transition: transform 0.2s;
    }

    .exception-toggle.open .exception-toggle-icon {
      transform: rotate(90deg);
    }

    .exception-list {
      display: none;
      margin-top: 12px;
      padding: 12px;
      background: var(--error-bg);
      border: 1px solid var(--error);
      border-radius: var(--radius-sm);
      max-height: 200px;
      overflow-y: auto;
    }

    .exception-list.show {
      display: block;
    }

    .exception-list-empty {
      color: var(--gray-500);
      font-size: 0.875rem;
      text-align: center;
    }

    .exception-list-items {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .exception-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 10px;
      background: var(--white);
      border: 1px solid var(--error);
      border-radius: 16px;
      font-size: 0.8125rem;
      color: var(--error);
    }

    .exception-item-remove {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 16px;
      height: 16px;
      border: none;
      background: transparent;
      color: var(--error);
      cursor: pointer;
      font-size: 1rem;
      line-height: 1;
      padding: 0;
      opacity: 0.6;
    }

    .exception-item-remove:hover {
      opacity: 1;
    }

    /* ==================== Buttons ==================== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 24px;
      font-size: 1rem;
      font-weight: 500;
      font-family: inherit;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.15s;
      border: none;
    }

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

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

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

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

    .btn-secondary {
      background: var(--white);
      color: var(--gray-700);
      border: 1px solid var(--gray-300);
    }

    .btn-secondary:hover:not(:disabled) {
      background: var(--gray-50);
      border-color: var(--gray-400);
    }

    .btn-block {
      width: 100%;
    }

    .btn-group {
      display: flex;
      gap: 12px;
      margin-top: 24px;
    }

    .btn-group .btn {
      flex: 1;
    }

    .download-hint {
      text-align: center;
      font-size: 0.8125rem;
      color: var(--error);
      margin-top: 8px;
    }

    /* ==================== Validation Status ==================== */
    .validation-status {
      display: none;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      font-size: 0.875rem;
    }

    .validation-status.show {
      display: block;
    }

    .validation-status.success {
      background: var(--success-bg);
      color: var(--success);
      border: 1px solid var(--success);
    }

    .validation-status.error {
      background: var(--error-bg);
      color: var(--error);
      border: 1px solid var(--error);
    }

    .validation-status-title {
      font-weight: 600;
      margin-bottom: 4px;
    }

    /* ==================== Field Errors ==================== */
    .field-error {
      font-size: 0.75rem;
      color: var(--error);
      margin-top: 4px;
      display: none;
    }

    .field-error.show {
      display: block;
    }

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

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

    /* ==================== Footer ==================== */
    .site-footer {
      text-align: center;
      padding: 24px 16px;
      margin-top: 16px;
      border-top: 1px solid var(--gray-200);
    }

    .site-footer .github-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--gray-500);
      text-decoration: none;
      font-size: 0.875rem;
      padding: 8px 16px;
      border-radius: var(--radius);
      transition: color 0.15s, background-color 0.15s;
    }

    .site-footer .github-link:hover {
      color: var(--gray-700);
      background-color: var(--gray-200);
    }

    .site-footer .github-link svg {
      width: 18px;
      height: 18px;
      fill: currentColor;
    }

    .site-footer .version {
      display: block;
      margin-top: 8px;
      font-size: 0.75rem;
      color: var(--gray-400);
    }

    /* ==================== Responsive ==================== */

    /* Form area - contains form inputs and preview (Groups 1-3) */
    .form-area {
      display: block;
    }

    .form-inputs {
      display: block;
    }

    .form-preview {
      display: block;
    }

    /* Desktop layout (≥1024px) - Two column form area */
    @media (min-width: 1024px) {
      .container {
        max-width: 1200px;
        padding: 24px 32px;
      }

      /* Form area uses two-column grid */
      .form-area {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 24px;
        align-items: start;
        margin-bottom: 24px;
      }

      /* Left column: form inputs stacked vertically */
      .form-inputs {
        display: flex;
        flex-direction: column;
        gap: 16px;
      }

      /* Right column: preview section */
      .form-preview {
        position: sticky;
        top: 24px;
        align-self: start;
      }

      /* Saved events section - full width with horizontal cards */
      #savedEventsSection {
        max-width: 100%;
      }

      .saved-events-list {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 16px;
      }
    }

    /* Tablet layout (768px - 1023px) - Wider single column */
    @media (min-width: 768px) and (max-width: 1023px) {
      .container {
        max-width: 720px;
      }
    }

    /* Mobile layout (≤480px) - Compact styling */
    @media (max-width: 480px) {
      .container {
        padding: 16px 12px;
      }

      .card {
        padding: 16px;
      }

      .form-row {
        flex-direction: column;
        gap: 16px;
      }

      .btn-group {
        flex-direction: column;
      }

      .calendar-day {
        font-size: 0.75rem;
      }
    }

    /* ==================== Hidden utility ==================== */
    .hidden {
      display: none !important;
    }

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

    /* ==================== Saved Events ==================== */
    .saved-events-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
    }

    .saved-events-header .card-title {
      margin-bottom: 0;
      padding-bottom: 0;
      border-bottom: none;
    }

    .btn-sm {
      padding: 6px 12px;
      font-size: 0.875rem;
    }

    .saved-events-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .saved-event-card {
      border: 1px solid var(--gray-200);
      border-radius: var(--radius-sm);
      padding: 16px;
      background: var(--gray-50);
    }

    .saved-event-card:hover {
      border-color: var(--primary-light);
      background: var(--white);
    }

    .saved-event-title {
      font-weight: 600;
      font-size: 1rem;
      color: var(--gray-900);
      margin-bottom: 8px;
    }

    .saved-event-details {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.875rem;
      color: var(--gray-600);
      margin-bottom: 12px;
    }

    .saved-event-detail {
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .saved-event-detail-icon {
      width: 16px;
      height: 16px;
      opacity: 0.6;
    }

    .saved-event-badge {
      display: inline-block;
      padding: 2px 8px;
      font-size: 0.75rem;
      font-weight: 500;
      border-radius: 12px;
      background: var(--primary-bg);
      color: var(--primary-dark);
    }

    .saved-event-actions {
      display: flex;
      gap: 8px;
      margin-top: 12px;
      padding-top: 12px;
      border-top: 1px solid var(--gray-200);
    }

    .saved-event-actions .btn {
      padding: 6px 16px;
      font-size: 0.875rem;
    }

    .btn-danger {
      background: var(--white);
      color: var(--error);
      border: 1px solid var(--error);
    }

    .btn-danger:hover:not(:disabled) {
      background: var(--error-bg);
    }

    .empty-state {
      text-align: center;
      padding: 24px;
      color: var(--gray-500);
    }

    /* ==================== Info Icon & Modal ==================== */
    .subtitle {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
    }

    .info-icon-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      padding: 0;
      border: none;
      background: transparent;
      color: var(--gray-400);
      cursor: pointer;
      transition: color 0.15s;
    }

    .info-icon-btn:hover {
      color: var(--primary);
    }

    .info-icon-btn:focus {
      outline: none;
      color: var(--primary);
    }

    .modal-overlay {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0, 0, 0, 0.5);
      z-index: 1000;
      align-items: center;
      justify-content: center;
      padding: 16px;
    }

    .modal-overlay.show {
      display: flex;
    }

    .modal {
      background: var(--white);
      border-radius: var(--radius);
      box-shadow: var(--shadow-md);
      max-width: 400px;
      width: 100%;
      max-height: 90vh;
      overflow-y: auto;
    }

    .modal-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 20px;
      border-bottom: 1px solid var(--gray-200);
    }

    .modal-title {
      font-size: 1.125rem;
      font-weight: 600;
      margin: 0;
      color: var(--gray-900);
    }

    .modal-close {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      border: none;
      background: transparent;
      font-size: 1.5rem;
      color: var(--gray-500);
      cursor: pointer;
      border-radius: var(--radius-sm);
      transition: all 0.15s;
    }

    .modal-close:hover {
      background: var(--gray-100);
      color: var(--gray-700);
    }

    .modal-body {
      padding: 20px;
      font-size: 0.9375rem;
      color: var(--gray-700);
      line-height: 1.5;
      text-align: left;
    }

    .privacy-modal-title {
      margin-bottom: 12px;
      font-size: 1rem;
      line-height: 1.5;
    }

    .privacy-modal-icon {
      height: 1.5em;
      width: 1.5em;
      margin-right: 8px;
      vertical-align: middle;
    }

    .modal-body strong {
      display: block;
      font-size: 1rem;
      color: var(--gray-900);
      margin-bottom: 8px;
    }

    .modal-body .privacy-modal-title strong {
      display: inline;
      vertical-align: middle;
    }

    .modal-body p {
      margin: 0 0 12px 0;
    }

    .modal-body ul {
      margin: 0;
      padding-left: 20px;
    }

    .modal-body li {
      margin-bottom: 6px;
    }

    .modal-body li:last-child {
      margin-bottom: 0;
    }

    /* ==================== Debug Info ==================== */
    .debug-info {
      margin-top: 24px;
      background: var(--gray-100);
      border: 1px dashed var(--gray-300);
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
      font-family: monospace;
      color: var(--gray-600);
    }

    .debug-info-title {
      font-weight: 600;
      color: var(--gray-700);
      cursor: pointer;
      padding: 12px 16px;
      list-style: none;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .debug-info-title::-webkit-details-marker {
      display: none;
    }

    .debug-info-title::before {
      content: '';
      border: 5px solid transparent;
      border-left: 6px solid var(--gray-500);
      transition: transform 0.15s;
    }

    .debug-info[open] .debug-info-title::before {
      transform: rotate(90deg);
    }

    .debug-info-content {
      padding: 0 16px 12px 16px;
    }

    .debug-info-row {
      display: flex;
      gap: 8px;
      margin-bottom: 4px;
    }

    .debug-info-label {
      color: var(--gray-500);
      min-width: 140px;
    }

    .debug-info-value {
      color: var(--gray-800);
    }

    /* ==================== Confetti Celebration ==================== */
    .confetti-container {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      pointer-events: none;
      overflow: hidden;
      z-index: 9999;
    }

    .confetti-piece {
      position: absolute;
      width: 10px;
      height: 10px;
      top: -10px;
      opacity: 0;
      animation: confetti-fall 3s ease-in-out forwards;
    }

    .confetti-piece:nth-child(odd) {
      border-radius: 50%;
    }

    .confetti-piece:nth-child(even) {
      border-radius: 2px;
    }

    @keyframes confetti-fall {
      0% {
        opacity: 1;
        top: -10px;
        transform: translateX(0) rotate(0deg);
      }
      25% {
        opacity: 1;
        transform: translateX(-20px) rotate(90deg);
      }
      50% {
        opacity: 1;
        transform: translateX(20px) rotate(180deg);
      }
      75% {
        opacity: 0.8;
        transform: translateX(-10px) rotate(270deg);
      }
      100% {
        opacity: 0;
        top: 100vh;
        transform: translateX(10px) rotate(360deg);
      }
    }