/* =============================================================
   tools.css — Styles for individual tool pages (tools/*.html)
   Layout: fixed top navbar + left sidebar + right main content
   ============================================================= */


/* ================================================================
   TOOL PAGE LAYOUT SHELL
   ================================================================ */

/* Offset everything below the fixed navbar */
.tool-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-top: var(--navbar-height);
}

/* Wrapper that holds sidebar + main side by side */
.tool-layout {
  display: flex;
  flex: 1;
  min-height: calc(100vh - var(--navbar-height));
}

/* ================================================================
   LEFT SIDEBAR
   ================================================================ */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: var(--navbar-height);
  height: calc(100vh - var(--navbar-height));
  overflow-y: auto;
  /* Custom scrollbar */
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 4px;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

/* Sidebar search box */
.sidebar__search {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.sidebar__search-input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

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

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

/* Sidebar navigation sections */
.sidebar__nav {
  flex: 1;
  padding: var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

/* Section label (e.g., "Data Tools") */
.sidebar__group-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  padding: var(--space-3) var(--space-3) var(--space-2);
  margin-top: var(--space-2);
}

.sidebar__group-label:first-child {
  margin-top: 0;
}

/* Individual nav item */
.sidebar__nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  position: relative;
}

.sidebar__nav-item:hover {
  color: var(--color-text-primary);
  background: var(--color-surface-2);
}

/* Active state — left accent bar */
.sidebar__nav-item.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
  font-weight: 600;
}

.sidebar__nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--color-primary);
  border-radius: 0 2px 2px 0;
}

.sidebar__nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: inherit;
}

.sidebar__nav-icon svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
}

.sidebar__nav-label {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* "Soon" badge next to nav item */
.sidebar__soon-tag {
  font-size: 10px;
  font-weight: 700;
  background: #fffbeb;
  color: var(--color-warning);
  border: 1px solid #fde68a;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* "New" badge next to nav item */
.sidebar__new-tag {
  font-size: 10px;
  font-weight: 700;
  background: var(--color-accent-light);
  color: var(--color-accent);
  border: 1px solid #a7f3d0;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* Collapsed/disabled nav item */
.sidebar__nav-item--disabled {
  opacity: 0.5;
  pointer-events: none;
  cursor: default;
}

/* Sidebar footer (version info) */
.sidebar__footer {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: center;
}

/* Mobile sidebar toggle button (visible on mobile only) */
.sidebar-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.sidebar-toggle svg {
  width: 16px;
  height: 16px;
}

/* Overlay for mobile sidebar */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 99;
}

.sidebar-overlay.visible {
  display: block;
}

/* ================================================================
   MAIN CONTENT AREA (right side)
   ================================================================ */
.tool-main {
  flex: 1;
  min-width: 0; /* prevent overflow */
  padding: var(--space-8) var(--space-10);
  max-width: 900px;
}

/* Breadcrumb navigation */
.tool-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.tool-breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.tool-breadcrumb a:hover {
  color: var(--color-primary);
}

.tool-breadcrumb__sep {
  font-size: var(--font-size-xs);
  color: var(--color-border);
}

.tool-breadcrumb__current {
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* Tool page header */
.tool-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.tool-header__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tool-header__icon svg {
  width: 28px;
  height: 28px;
}

.tool-header__text {
  flex: 1;
}

.tool-header__title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1.2;
  margin-bottom: var(--space-2);
}

.tool-header__subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.tool-header__badges {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

/* ================================================================
   FORM ELEMENTS (shared across tool pages)
   ================================================================ */

/* Labeled input group */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

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

.form-input.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Textarea */
.form-textarea {
  width: 100%;
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-family: 'Courier New', Courier, monospace;
  color: var(--color-text-primary);
  outline: none;
  resize: vertical;
  min-height: 240px;
  line-height: 1.7;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-textarea::placeholder {
  color: var(--color-text-muted);
  font-family: var(--font-family);
}

.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-textarea.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Error message below a field */
.form-error-msg {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-1);
}

/* ================================================================
   TOOL ACTION BAR (buttons row)
   ================================================================ */
.tool-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

/* ================================================================
   RESULT / PREVIEW PANEL
   ================================================================ */
.result-panel {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-top: var(--space-6);
  transition: border-color var(--transition-fast);
}

.result-panel--success {
  border-color: var(--color-accent);
}

.result-panel--error {
  border-color: var(--color-error);
}

.result-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
}

.result-panel__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.result-panel__status-icon {
  width: 16px;
  height: 16px;
}

.result-panel__actions {
  display: flex;
  gap: var(--space-2);
}

.result-panel__body {
  padding: var(--space-5);
}

/* Pre-formatted code display */
.code-preview {
  background: #0f172a;
  color: #e2e8f0;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 320px;
  overflow-y: auto;
}

/* Toast / inline alert */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  margin-top: var(--space-4);
}

.alert svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}

.alert--success {
  background: var(--color-accent-light);
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.alert--error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert--info {
  background: #dbeafe;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

/* Hidden by default, shown via JS */
.hidden {
  display: none !important;
}

/* ================================================================
   NAVBAR ON TOOL PAGES
   (shares .navbar class with landing.css but tool pages
    link back to home instead of anchors)
   ================================================================ */

/* Core navbar shell */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}

.navbar__logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.navbar__logo-icon svg {
  width: 20px;
  height: 20px;
}

.navbar__logo-text {
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.025em;
}

.navbar__logo-text span {
  color: var(--color-primary);
}
.tool-navbar__back {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.tool-navbar__back:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.tool-navbar__back svg {
  width: 16px;
  height: 16px;
}

/* ================================================================
   RESPONSIVE — TOOL PAGES
   ================================================================ */
@media (max-width: 1024px) {
  .tool-main {
    padding: var(--space-6) var(--space-6);
  }
}

@media (max-width: 768px) {
  /* Sidebar slides in from the left on mobile */
  .sidebar {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    bottom: 0;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    height: calc(100vh - var(--navbar-height));
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-xl);
  }

  .sidebar-toggle {
    display: flex;
  }

  .tool-main {
    padding: var(--space-5) var(--space-4);
  }

  .tool-header {
    flex-direction: column;
    gap: var(--space-4);
  }

  .tool-header__icon {
    width: 48px;
    height: 48px;
  }

  .tool-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .tool-actions .btn {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .tool-header__title {
    font-size: var(--font-size-xl);
  }

  .tool-breadcrumb {
    font-size: 12px;
  }
}