/* Reset and Global Styles */
:root {
  /* Light Theme Variables: Corporate Blue and Yellow */
  --header-bg: #fdb813;
  --header-text: #004c8c;
  --bg-color: #f4f6f9;
  --container-bg: #ffffff;
  --text-color: #333333;
  --heading-color: #004c8c;
  --primary-color: #337ab7;
  --primary-hover: #286090;
  --border-color: #dcdfe3;
  --btn-text: #ffffff;
  --danger-color: #d9534f;
  --danger-hover: #c9302c;
  --invalid-bg: #fdf2f2;
  --invalid-text: #c9302c;
  --toast-bg: #fdb813;
  --toast-text: #000000;
  --focus-ring: rgba(51, 122, 183, 0.3);

  /* Unified Panel Variables (For Toolbar, Generate Text Header, and Status Bar) */
  --panel-bg: #dcedf6; /* The light blue from your attached image */
  --panel-border: #bce8f1;

  /* Toolbar Button Variables */
  --toolbar-btn-bg: #ffffff;
  --toolbar-btn-border: #cccccc;
  --toolbar-btn-text: #333333;
  --toolbar-btn-hover-bg: #e6e6e6;
  --toolbar-btn-hover-border: #adadad;
}

[data-theme="dark"] {
  /* Dark Theme Variables */
  --header-bg: #1a1a1a;
  --header-text: #fdb813;
  --bg-color: #0d1117;
  --container-bg: #161b22;
  --text-color: #c9d1d9;
  --heading-color: #fdb813;
  --primary-color: #fdb813;
  --primary-hover: #e0a310;
  --border-color: #30363d;
  --btn-text: #0d1117;
  --danger-color: #f85149;
  --danger-hover: #da3633;
  --invalid-bg: #450a0a;
  --invalid-text: #fca5a5;
  --toast-bg: #337ab7;
  --toast-text: #ffffff;
  --focus-ring: rgba(253, 184, 19, 0.5);

  /* Dark Panel Variables */
  --panel-bg: #1e2d3d;
  --panel-border: #2a3f54;

  /* Dark Toolbar Button Variables */
  --toolbar-btn-bg: #161b22;
  --toolbar-btn-border: #30363d;
  --toolbar-btn-text: #c9d1d9;
  --toolbar-btn-hover-bg: #21262d;
  --toolbar-btn-hover-border: #8b949e;
}

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

html, body {
  height: 100%;
  font-family: "Inter", "Segoe UI", sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  display: flex;
  flex-direction: column;
  margin: 0;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Header & Theme Toggle */
.header-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 40px;
  width: 100%;
  background-color: var(--header-bg);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s ease;
}

.header-controls h1 {
  color: var(--header-text);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.theme-toggle {
  background-color: var(--container-bg) !important;
  color: var(--text-color) !important;
  border: 1px solid var(--border-color) !important;
  font-weight: 600 !important;
}

.theme-toggle:hover {
  background-color: var(--bg-color) !important;
}

/* Layout */
.app-container {
  display: flex;
  flex: 1;
  padding: 30px;
  gap: 25px;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 1500px;
  margin: 0 auto;
  width: 100%;
}

.editor-container,
.generator-container {
  flex: 1;
  min-width: 320px;
  display: flex;
  flex-direction: column;
  padding: 25px;
  background: var(--container-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Generate Text Header Block */
.generator-container h2 {
  color: var(--heading-color);
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  padding: 12px 15px;
  border-radius: 4px;
  margin-bottom: 15px;
  text-align: center;
  font-weight: 600;
  font-size: 18px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Toolbar Block */
.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 15px;
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  padding: 12px 15px;
  border-radius: 4px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.toolbar-btn {
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 400;
  font-family: "Inter", sans-serif;
  background: var(--toolbar-btn-bg);
  color: var(--toolbar-btn-text);
  border: 1px solid var(--toolbar-btn-border);
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.toolbar-btn:hover {
  background: var(--toolbar-btn-hover-bg);
  border-color: var(--toolbar-btn-hover-border);
}

/* Inputs & Buttons */
.generator-inputs {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
}

.generator-inputs input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: "Inter", sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
}

.generator-inputs input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.primary-btn {
  padding: 10px 20px;
  background: var(--primary-color);
  color: var(--btn-text);
  border: none;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s ease;
}

.primary-btn:hover {
  background: var(--primary-hover);
}

/* Textarea */
textarea.form-control {
  width: 100%;
  flex: 1;
  padding: 16px;
  font-size: 16px;
  font-family: "Inter", sans-serif;
  line-height: 1.6;
  background: var(--bg-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  outline: none;
  resize: none;
  transition: all 0.3s ease;
}

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

/* Status bar Block */
.status-bar {
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-color);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  align-items: center;
  font-size: 13px;
  border-radius: 6px;
  padding: 15px 12px;
  gap: 10px;
  margin-top: 15px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.status-bar div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-transform: uppercase;
  font-weight: 500;
  letter-spacing: 0.5px;
  color: #666;
}

[data-theme="dark"] .status-bar div {
  color: #a0a0a0;
}

.status-bar span {
  font-weight: 700;
  font-size: 20px;
  color: var(--primary-color);
}

/* Action buttons */
.column-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.column-actions.separated {
  margin-top: 15px;
}

/* Mini Buttons */
.mini-button {
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: 4px;
  background-color: var(--primary-color);
  color: var(--btn-text);
  cursor: pointer;
  transition: background 0.3s ease, transform 0.1s ease;
}

.mini-button:hover {
  background-color: var(--primary-hover);
}

.mini-button:active {
  transform: translateY(1px);
}

/* Red Clear Button */
.red-button {
  background-color: var(--danger-color) !important;
  color: #ffffff !important;
}

.red-button:hover {
  background-color: var(--danger-hover) !important;
}

/* Modern Toast Notification */
.copy-message {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: var(--toast-bg);
  color: var(--toast-text);
  padding: 14px 28px;
  border-radius: 6px;
  font-weight: 600;
  display: none;
  z-index: 9999;
  box-shadow: 0 6px 16px rgba(0,0,0,0.2);
  animation: slideUpFadeOut 2.5s ease-in-out forwards;
}

/* Invalid Message */
.invalid-message {
  margin-bottom: 10px;
  background-color: var(--invalid-bg);
  color: var(--invalid-text);
  padding: 10px 16px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  display: none;
  border: 1px solid rgba(201, 48, 44, 0.2);
}

@keyframes slideUpFadeOut {
  0% { opacity: 0; transform: translateY(20px); }
  10% { opacity: 1; transform: translateY(0); }
  80% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(20px); }
}

@media (max-width: 768px) {
  .app-container {
    flex-direction: column;
    padding: 15px;
  }
  .header-controls {
    flex-direction: column;
    gap: 15px;
    padding: 20px;
    text-align: center;
  }
}