/* ToolKaro Ultra-Modern Elite Design CSS */
:root {
  --bg-primary: #07090e;
  --bg-secondary: #0d1322;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.9);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(6, 182, 212, 0.5);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(6, 182, 212, 0.15);
  --shadow-lg: 0 25px 60px rgba(0, 0, 0, 0.8);
  --radius: 18px;
  --radius-sm: 10px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f1f5f9;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: #ffffff;
  --border-color: rgba(0, 0, 0, 0.08);
  --border-glow: rgba(6, 182, 212, 0.4);
  --text-main: #0f172a;
  --text-muted: #64748b;
  --shadow-sm: 0 4px 12px rgba(0,0,0,0.05);
  --shadow-md: 0 12px 30px rgba(0,0,0,0.08);
  --shadow-lg: 0 20px 40px rgba(0,0,0,0.15);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(6, 182, 212, 0.1) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(139, 92, 246, 0.1) 0%, transparent 45%);
}

/* Header */
.app-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
}

.brand-icon {
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.4rem;
  box-shadow: 0 8px 20px rgba(6, 182, 212, 0.4);
}

.search-box {
  flex: 1;
  max-width: 600px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 3.2rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 30px;
  color: var(--text-main);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.search-box input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.25), inset 0 2px 4px rgba(0,0,0,0.1);
}

.search-box .search-icon {
  position: absolute;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1.1rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-icon {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1.2rem;
}

.btn-icon:hover {
  background: var(--accent-cyan);
  color: white;
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.4);
}

/* Layout */
.app-container {
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  flex: 1;
}

/* Sidebar */
.sidebar {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  height: fit-content;
  position: sticky;
  top: 100px;
  max-height: calc(100vh - 130px);
  overflow-y: auto;
  box-shadow: var(--shadow-sm);
}

.sidebar-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
  margin-top: 1.25rem;
  font-weight: 700;
}

.sidebar-title:first-child {
  margin-top: 0;
}

.category-nav {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.nav-btn:hover, .nav-btn.active {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.18), rgba(139, 92, 246, 0.18));
  color: var(--accent-cyan);
  font-weight: 600;
  transform: translateX(4px);
}

.nav-btn.active {
  border-left: 4px solid var(--accent-cyan);
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.15);
}

/* Content Area */
.content-area {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  letter-spacing: -0.5px;
}

/* Tools Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.5rem;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  opacity: 0;
  transition: var(--transition);
}

.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
}

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

.tool-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: white;
  box-shadow: 0 8px 20px rgba(0,0,0,0.25);
}

.tool-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.3px;
}

.tool-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-badge {
  align-self: flex-start;
  padding: 0.25rem 0.7rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

/* Workspace */
.tool-workspace {
  display: none;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  animation: fadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.workspace-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.25rem;
  margin-bottom: 2rem;
}

.btn-back {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}

.btn-back:hover {
  background: var(--accent-cyan);
  color: white;
  border-color: var(--accent-cyan);
  transform: translateX(-4px);
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.35);
}

/* Form Elements */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.6rem;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.9rem 1.2rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
  font-family: 'Courier New', Courier, monospace;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.2);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: white;
  border: none;
  padding: 0.9rem 1.85rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  transition: var(--transition);
  box-shadow: 0 8px 25px rgba(6, 182, 212, 0.4);
}

.btn-primary:hover {
  opacity: 0.95;
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(6, 182, 212, 0.55);
}

.btn-secondary {
  background: var(--bg-primary);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.action-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

/* Result Box */
.result-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  margin-top: 1.5rem;
  position: relative;
  box-shadow: inset 0 2px 6px rgba(0,0,0,0.25);
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.result-title {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.8px;
}

.result-content {
  font-family: 'Courier New', Courier, monospace;
  font-size: 1rem;
  word-break: break-all;
  white-space: pre-wrap;
  color: var(--accent-cyan);
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 30px;
  right: 30px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 2000;
}

.toast {
  background: var(--bg-secondary);
  color: var(--text-main);
  border-left: 5px solid var(--accent-cyan);
  padding: 1.1rem 1.6rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  animation: slideIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border: 1px solid var(--border-color);
}

@keyframes slideIn {
  from { transform: translateX(120%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.app-footer {
  margin-top: auto;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 2.2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}

@media (max-width: 950px) {
  .app-container {
    grid-template-columns: 1fr;
    padding: 1rem;
  }
  .sidebar {
    position: static;
    max-height: none;
  }
  .category-nav {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 0.5rem;
  }
  .nav-btn {
    white-space: nowrap;
  }
}