/* =============================================
   TOOLS PAGE STYLES
   Layered on top of shared style.css tokens
   ============================================= */

/* ---- Page Header ---- */
.tools-hero {
  padding: calc(var(--nav-height) + var(--space-16)) 0 var(--space-12);
  text-align: center;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.tools-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.tools-hero-content {
  position: relative;
  z-index: 1;
}

.tools-hero-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  display: block;
}

.tools-hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-4);
}

.tools-hero p {
  color: var(--text-secondary);
  font-size: var(--text-base);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

.tools-back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-top: var(--space-6);
  transition: color var(--transition-base);
  text-decoration: none;
}

.tools-back-link:hover {
  color: var(--accent-primary);
}

.tools-back-link svg {
  width: 16px;
  height: 16px;
}

/* ---- Tool Selector Tabs ---- */
.tool-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  padding: 0 var(--space-6);
  margin-bottom: var(--space-12);
  flex-wrap: wrap;
}

.tool-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-6) var(--space-10);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  cursor: pointer;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  min-width: 200px;
  position: relative;
  overflow: hidden;
}

.tool-tab::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

.tool-tab > * {
  position: relative;
  z-index: 1;
}

.tool-tab:hover {
  border-color: var(--accent-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.tool-tab.active {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.tool-tab.active::before {
  opacity: 0.08;
}

.tool-tab-icon {
  font-size: 1.75rem;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: var(--accent-glow);
  transition: all var(--transition-base);
}

.tool-tab.active .tool-tab-icon {
  background: var(--accent-gradient);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.tool-tab h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.tool-tab p {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin: 0;
}

/* ---- Tool Workspace ---- */
.tool-workspace {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6) var(--space-24);
}

.tool-panel {
  display: none;
  animation: fadeInPanel 0.4s ease;
}

.tool-panel.active {
  display: block;
}

@keyframes fadeInPanel {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- Text Tool Layout (JSON / XML) ---- */
.text-tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.text-tool-col {
  display: flex;
  flex-direction: column;
}

.text-tool-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}

.text-tool-label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.inline-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  outline: none;
}

.inline-btn svg {
  width: 14px;
  height: 14px;
}

.inline-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-glow);
}

.text-tool-input,
.text-tool-output {
  width: 100%;
  min-height: 380px;
  padding: var(--space-5);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  color: var(--text-primary);
  font-family: "Fira Code", "Cascadia Code", "JetBrains Mono", "Consolas", monospace;
  font-size: var(--text-sm);
  line-height: 1.6;
  resize: vertical;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  outline: none;
  backdrop-filter: blur(10px);
}

.text-tool-input::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

.text-tool-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.text-tool-output {
  overflow: auto;
  white-space: pre;
  tab-size: 2;
  cursor: text;
  user-select: text;
}

.text-tool-output.error {
  border-color: #ef4444;
  color: #ef4444;
}

/* ---- Line counter ---- */
.editor-wrapper {
  position: relative;
}

.line-count {
  position: absolute;
  bottom: var(--space-3);
  right: var(--space-3);
  font-size: var(--text-xs);
  color: var(--text-muted);
  opacity: 0.6;
  pointer-events: none;
  font-family: var(--font-body);
}

/* ---- Action Buttons ---- */
.tool-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-lg);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  outline: none;
}

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

.tool-btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.2);
}

.tool-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.tool-btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.tool-btn-secondary:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.tool-btn-danger {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.tool-btn-danger:hover {
  background: rgba(239, 68, 68, 0.2);
}

/* ---- Syntax Highlighting ---- */
.syntax-string { color: #a5d6ff; }
.syntax-number { color: #79c0ff; }
.syntax-boolean { color: #ff7b72; }
.syntax-null { color: #ffa657; }
.syntax-key { color: #d2a8ff; }
.syntax-bracket { color: #8b949e; }
.syntax-tag { color: #7ee787; }
.syntax-attr-name { color: #d2a8ff; }
.syntax-attr-value { color: #a5d6ff; }
.syntax-comment { color: #8b949e; font-style: italic; }
.syntax-declaration { color: #ff7b72; }
.syntax-text { color: var(--text-primary); }

[data-theme="light"] .syntax-string { color: #0a3069; }
[data-theme="light"] .syntax-number { color: #0550ae; }
[data-theme="light"] .syntax-boolean { color: #cf222e; }
[data-theme="light"] .syntax-null { color: #953800; }
[data-theme="light"] .syntax-key { color: #8250df; }
[data-theme="light"] .syntax-bracket { color: #57606a; }
[data-theme="light"] .syntax-tag { color: #116329; }
[data-theme="light"] .syntax-attr-name { color: #8250df; }
[data-theme="light"] .syntax-attr-value { color: #0a3069; }
[data-theme="light"] .syntax-comment { color: #6e7781; }
[data-theme="light"] .syntax-declaration { color: #cf222e; }

/* ---- Toast Notification ---- */
.tool-toast {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  padding: var(--space-3) var(--space-6);
  background: var(--accent-gradient);
  color: white;
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: none;
}

.tool-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.tool-toast.error {
  background: linear-gradient(135deg, #ef4444, #dc2626);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .tool-tabs {
    gap: var(--space-3);
  }

  .tool-tab {
    min-width: 150px;
    padding: var(--space-4) var(--space-6);
  }

  .text-tool-grid {
    grid-template-columns: 1fr;
  }

  .text-tool-input,
  .text-tool-output {
    min-height: 250px;
  }

  .tools-hero h1 {
    font-size: var(--text-3xl);
  }
}

@media (max-width: 480px) {
  .tool-tabs {
    flex-direction: column;
    align-items: center;
  }

  .tool-tab {
    width: 100%;
    max-width: 280px;
    flex-direction: row;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6);
  }

  .tool-actions {
    flex-direction: column;
  }

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