/* ===== RESET ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f8ff;
  color: #111827;
  -webkit-font-smoothing: antialiased;
}

/* ===== LAYOUT ===== */

.container {
  display: flex;
  min-height: 100vh;
}

/* SIDEBAR */

.sidebar {
  width: 260px;
  background: #ffffff;
  border-right: 1px solid #e5e7eb;
  padding: 16px;
  overflow-y: auto;
  box-shadow: 4px 0 16px rgba(15, 23, 42, 0.03);
}

.logo {
  font-size: 22px;
  font-weight: 700;
  color: #2563eb;
  margin-bottom: 12px;
}

/* SEARCH BOX */

.search-box {
  margin-bottom: 12px;
}

.search-box input {
  width: 100%;
  padding: 9px 10px;
  border-radius: 8px;
  border: 1px solid #d1d5db;
  background: #fafafa;
  font-size: 14px;
  color: #374151;
}

.search-box input:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.25);
}

/* TOOL LIST */

.tool-list {
  list-style: none;
  margin-top: 10px;
  padding-right: 4px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

.tool-item {
  background: #ffffff;
  border-radius: 10px;
  border: 1px solid #e5e7eb;
  padding: 10px 12px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: 0.18s ease-out;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.04);
}

.tool-item:hover {
  border-color: #2563eb;
  background: #eef4ff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.18);
  transform: translateX(4px);
}

.tool-item.active {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

/* TOOL ITEM INNER */

.tool-name {
  font-size: 14px;
  font-weight: 600;
}

.tool-tags {
  margin-top: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tool-tag {
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 600;
  color: #ffffff;
}

/* CATEGORY COLORS */
.tool-tag.text { background: #2563eb; }
.tool-tag.image { background: #16a34a; }
.tool-tag.pdf { background: #dc2626; }
.tool-tag.dev { background: #9333ea; }
.tool-tag.util { background: #d97706; }

/* ===== MAIN PANEL ===== */

.main-panel {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
}

/* SELECTED TOOL TITLE */

.selected-tool-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
}

/* TEXTAREAS */

.text-area {
  width: 100%;
  min-height: 140px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #d1d5db;
  background: #fafafa;
  color: #111827;
  font-size: 14px;
  resize: vertical;
}

.text-area:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.25);
}

#toolOutput {
  width: 100%;
  min-height: 160px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #d1d5db;
  background: #ffffff;
  font-size: 14px;
  resize: vertical;
}

/* RUN BUTTON */

#runTool {
  margin-top: 8px;
  margin-bottom: 10px;
  padding: 9px 20px;
  border-radius: 999px;
  border: none;
  background: #2563eb;
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.30);
  transition: 0.2s ease-out;
}

#runTool:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
}

#resultInfo {
  font-size: 13px;
  color: #2563eb;
  margin-bottom: 10px;
}

/* ===== IMAGE TOOLS ===== */

#imageToolBox {
  display: none; /* script.js toggles */
  background: #ffffff;
  border-radius: 12px;
  border: 1px solid #e5e7eb;
  padding: 14px 14px 16px;
  margin-top: 16px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.08);
}

#imageToolBox h3 {
  margin: 0 0 6px 0;
  font-size: 16px;
}

#imageToolBox p {
  font-size: 13px;
  color: #4b5563;
  margin-bottom: 10px;
}

#imgInput {
  margin-bottom: 10px;
}

#imageCanvas {
  display: block;
  max-width: 100%;
  border-radius: 10px;
  border: 1px solid #e5e7eb;
  margin-top: 8px;
}

/* Image buttons row */

.image-buttons {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.image-buttons button {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid #d1d5db;
  background: #f3f4ff;
  font-size: 12px;
  cursor: pointer;
  transition: 0.18s;
}

.image-buttons button:hover {
  background: #e0e7ff;
  border-color: #2563eb;
}

/* ===== POPUP MODAL STYLES (NEW) ===== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.welcome-popup {
  background: #ffffff;
  padding: 30px;
  border-radius: 16px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
  text-align: center;
  border: 1px solid #e5e7eb;
  animation: popIn 0.3s ease-out;
}

@keyframes popIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.welcome-popup h2 {
  color: #2563eb;
  margin-bottom: 10px;
  font-size: 24px;
}

.welcome-popup p {
  color: #4b5563;
  margin-bottom: 15px;
  font-size: 15px;
}

.welcome-popup li {
  color: #374151;
  font-size: 14px;
  margin-bottom: 6px;
}

.close-btn {
  margin-top: 25px;
  width: 100%;
  padding: 12px;
  background: #2563eb;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.close-btn:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

/* ===== SCROLLBAR ===== */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
  background: #9ca3af;
}

/* ===== RESPONSIVE ===== */

@media (max-width: 800px) {
  .container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: 220px;
    border-right: none;
    border-bottom: 1px solid #e5e7eb;
  }

  .tool-list {
    max-height: 150px;
  }

  .main-panel {
    height: calc(100vh - 220px);
    padding: 16px;
  }
}