/* =========================================================================
   Tools — zakarls.com
   Minimal, clean design with forest green accent
   ========================================================================= */

:root {
  --green-50:  #F0FDF4;
  --green-100: #DCFCE7;
  --green-200: #BBF7D0;
  --green-500: #22C55E;
  --green-600: #2D6A4F;
  --green-700: #245840;
  --green-800: #1B4332;

  --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;

  --red-500: #EF4444;
  --red-600: #DC2626;

  --white: #FFFFFF;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --transition: 150ms ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--gray-900);
  background: var(--gray-50);
  line-height: 1.5;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* =========================================================================
   Auth Screen
   ========================================================================= */
#auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
}

.auth-card {
  width: 100%;
  max-width: 360px;
  padding: 40px;
  text-align: center;
}

.auth-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--green-50);
  color: var(--green-600);
  margin-bottom: 20px;
}

.auth-card h1 {
  font-size: 22px;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.auth-subtitle {
  color: var(--gray-500);
  margin-bottom: 28px;
  font-size: 14px;
}

#auth-form {
  text-align: left;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 5px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  color: var(--gray-900);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--green-600);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
}

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

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

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

.form-error {
  color: var(--red-600);
  font-size: 13px;
  margin-bottom: 12px;
  padding: 8px 12px;
  background: #FEF2F2;
  border-radius: var(--radius-sm);
}

.icon-input-wrapper {
  display: flex;
  gap: 6px;
}

.icon-input-wrapper input {
  flex: 1;
}

/* =========================================================================
   Buttons
   ========================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1;
}

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

.btn-primary {
  background: var(--green-600);
  color: var(--white);
}

.btn-primary:hover:not(:disabled) {
  background: var(--green-700);
}

.btn-primary:active:not(:disabled) {
  background: var(--green-800);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-600);
}

.btn-ghost:hover {
  background: var(--gray-100);
  color: var(--gray-900);
}

.btn-danger {
  background: transparent;
  color: var(--red-600);
}

.btn-danger:hover {
  background: #FEF2F2;
}

.btn-full {
  width: 100%;
  padding: 11px 16px;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-xs {
  padding: 4px 8px;
  font-size: 12px;
}

.btn-icon {
  padding: 6px;
  border-radius: var(--radius-sm);
}

/* =========================================================================
   Header
   ========================================================================= */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.header-icon {
  color: var(--green-600);
}

.header-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-900);
}

.header-center {
  flex: 1;
  max-width: 420px;
  margin: 0 auto;
}

.search-wrapper {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  pointer-events: none;
}

#search-input {
  width: 100%;
  padding: 7px 12px 7px 34px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
  color: var(--gray-900);
  background: var(--gray-50);
  outline: none;
  transition: all var(--transition);
}

#search-input:focus {
  background: var(--white);
  border-color: var(--green-600);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
}

#search-input::placeholder {
  color: var(--gray-400);
}

.search-hint {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  padding: 1px 5px;
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  color: var(--gray-400);
  background: var(--white);
  font-family: inherit;
  pointer-events: none;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* =========================================================================
   User Menu
   ========================================================================= */
.user-menu {
  position: relative;
}

.user-menu-trigger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--gray-200);
  border-radius: 50%;
  background: var(--white);
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition);
}

.user-menu-trigger:hover {
  border-color: var(--gray-300);
  color: var(--gray-900);
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  width: 200px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 4px;
  z-index: 200;
}

.user-dropdown-header {
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-500);
  border-bottom: 1px solid var(--gray-100);
  margin-bottom: 4px;
}

.user-dropdown-item {
  display: block;
  width: 100%;
  padding: 8px 12px;
  border: none;
  background: none;
  text-align: left;
  font-size: 13px;
  font-family: inherit;
  color: var(--gray-700);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
}

.user-dropdown-item:hover {
  background: var(--gray-50);
}

.user-dropdown-item--danger {
  color: var(--red-600);
}

.user-dropdown-item--danger:hover {
  background: #FEF2F2;
}

.user-dropdown-divider {
  border: none;
  border-top: 1px solid var(--gray-100);
  margin: 4px 0;
}

/* =========================================================================
   Content
   ========================================================================= */
.content {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px;
}

/* =========================================================================
   Categories Bar
   ========================================================================= */
.categories-bar {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.category-pill {
  padding: 6px 14px;
  border: 1px solid var(--gray-200);
  border-radius: 100px;
  font-size: 13px;
  font-family: inherit;
  color: var(--gray-600);
  background: var(--white);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.category-pill:hover {
  border-color: var(--gray-300);
  color: var(--gray-900);
}

.category-pill.active {
  background: var(--green-600);
  border-color: var(--green-600);
  color: var(--white);
}

/* =========================================================================
   Tools Grid
   ========================================================================= */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.tool-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: box-shadow var(--transition), border-color var(--transition);
  position: relative;
}

.tool-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--gray-300);
}

.tool-card-header {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 12px;
}

.tool-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 16px;
  color: var(--white);
  overflow: hidden;
  background: var(--green-600);
}

.tool-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tool-info {
  flex: 1;
  min-width: 0;
}

.tool-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 2px;
  line-height: 1.3;
}

.tool-description {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity var(--transition);
  flex-shrink: 0;
}

.tool-card:hover .tool-actions {
  opacity: 1;
}

.tool-actions button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--gray-400);
  cursor: pointer;
  transition: all var(--transition);
}

.tool-actions button:hover {
  background: var(--gray-100);
  color: var(--gray-700);
}

.tool-actions button.delete-btn:hover {
  background: #FEF2F2;
  color: var(--red-600);
}

.tool-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.tool-category-badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 500;
  color: var(--green-700);
  background: var(--green-50);
  border-radius: 100px;
}

.tool-downloads {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.download-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 500;
  font-family: inherit;
  color: var(--green-700);
  background: var(--green-50);
  border: 1px solid var(--green-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.download-link:hover {
  background: var(--green-100);
  border-color: var(--green-600);
  color: var(--green-800);
}

.download-link svg {
  flex-shrink: 0;
}

/* =========================================================================
   Empty State
   ========================================================================= */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--gray-400);
}

.empty-state svg {
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 4px;
}

.empty-state p {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 20px;
}

/* =========================================================================
   Modals
   ========================================================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 1000;
  padding: 60px 20px;
  overflow-y: auto;
  animation: fadeIn 150ms ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 560px;
  animation: slideUp 200ms ease;
}

.modal--sm {
  max-width: 420px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 0;
}

.modal-header h2 {
  font-size: 17px;
  font-weight: 600;
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: none;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--gray-400);
  font-size: 20px;
  cursor: pointer;
  transition: all var(--transition);
}

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

.modal-body {
  padding: 20px 24px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 0 24px 20px;
}

/* =========================================================================
   Downloads section in modal
   ========================================================================= */
.downloads-section {
  border-top: 1px solid var(--gray-100);
  padding-top: 16px;
  margin-top: 4px;
}

.downloads-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.downloads-header label {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
}

.download-row {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 8px;
  position: relative;
}

.download-row-top {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}

.download-row-top input[type="text"] {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
  outline: none;
}

.download-row-top input:focus {
  border-color: var(--green-600);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
}

.download-type-toggle {
  display: flex;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.download-type-toggle button {
  padding: 5px 10px;
  border: none;
  background: var(--white);
  font-size: 12px;
  font-family: inherit;
  color: var(--gray-500);
  cursor: pointer;
  transition: all var(--transition);
}

.download-type-toggle button.active {
  background: var(--green-600);
  color: var(--white);
}

.download-row-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: none;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--gray-400);
  cursor: pointer;
  flex-shrink: 0;
}

.download-row-remove:hover {
  background: #FEF2F2;
  color: var(--red-600);
}

.download-row-body input[type="text"],
.download-row-body input[type="url"] {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
  outline: none;
}

.download-row-body input:focus {
  border-color: var(--green-600);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
}

.file-upload-area {
  display: flex;
  align-items: center;
  gap: 8px;
}

.file-upload-area .file-name {
  font-size: 13px;
  color: var(--gray-600);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-upload-area .file-size {
  font-size: 11px;
  color: var(--gray-400);
  flex-shrink: 0;
}

/* =========================================================================
   Categories management
   ========================================================================= */
.categories-manage-list {
  margin-bottom: 16px;
}

.category-manage-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-100);
}

.category-manage-row:last-child {
  border-bottom: none;
}

.category-manage-row input {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
  background: transparent;
  outline: none;
  transition: all var(--transition);
}

.category-manage-row input:focus {
  border-color: var(--green-600);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
}

.category-manage-row .tool-count {
  font-size: 11px;
  color: var(--gray-400);
  flex-shrink: 0;
}

.categories-add-row {
  display: flex;
  gap: 8px;
}

.categories-add-row input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
  outline: none;
}

.categories-add-row input:focus {
  border-color: var(--green-600);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
}

/* =========================================================================
   Toasts
   ========================================================================= */
#toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  color: var(--white);
  box-shadow: var(--shadow-lg);
  animation: slideIn 200ms ease;
  max-width: 340px;
}

.toast--success {
  background: var(--green-600);
}

.toast--error {
  background: var(--red-600);
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* =========================================================================
   Confirm dialog
   ========================================================================= */
.confirm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  animation: fadeIn 100ms ease;
}

.confirm-dialog {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  width: 100%;
  max-width: 360px;
  text-align: center;
  animation: slideUp 150ms ease;
}

.confirm-dialog h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.confirm-dialog p {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 20px;
}

.confirm-dialog-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
}

/* =========================================================================
   Loading spinner
   ========================================================================= */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--gray-200);
  border-top-color: var(--green-600);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 768px) {
  .header {
    padding: 0 16px;
    gap: 8px;
  }

  .header-center {
    display: none;
  }

  .content {
    padding: 16px;
  }

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

  .form-row {
    flex-direction: column;
  }

  .tool-actions {
    opacity: 1;
  }

  #add-tool-btn span {
    display: none;
  }
}

@media (max-width: 480px) {
  .auth-card {
    padding: 24px;
  }

  .modal-overlay {
    padding: 20px 12px;
  }
}