:root {
  --bg-color: #f0f2f5;
  --tab-bg: #fff;
  --tab-color: black;
  --tab-active-color: #185ee0;
  --notification-bg: #e6eef9;
  --notification-color: black;
  --glider-bg: #e6eef9;
  --output-bg: #222;
  --output-color: #0f0;
  --dropdown-bg: white;
  --dropdown-hover-bg: #e6eef9;
  --dropdown-color: black;
  --run-btn-bg: #185ee0;
  --run-btn-hover-bg: #124ab3;
  --theme-toggle-bg: #185ee0;
  --theme-toggle-hover-bg: #124ab3;
}

body {
  margin: 0;
  background-color: var(--bg-color);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  transition: background-color 0.3s ease;
  color: var(--tab-color);
}

.container {
  max-width: 900px;
  margin: 30px auto;
  padding: 0 15px;
}

.tabs {
  display: flex;
  align-items: center;
  position: relative;
  background-color: var(--tab-bg);
  box-shadow: 0 0 1px 0 rgba(24, 94, 224, 0.15),
    0 6px 12px 0 rgba(24, 94, 224, 0.15);
  padding: 0.75rem 1rem;
  border-radius: 99px;
  margin-bottom: 1rem;
  user-select: none;
  gap: 1.5rem;
  z-index: 2;
}

.container input[type="radio"] {
  display: none;
}

.tab {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 30px;
  width: 140px;
  font-size: 1rem;
  color: var(--tab-color);
  font-weight: 600;
  border-radius: 99px;
  cursor: pointer;
  transition: color 0.15s ease-in;
  position: relative;
  user-select: none;
}

.notification {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  position: absolute;
  top: 6px;
  right: 15px;
  font-size: 12px;
  border-radius: 50%;
  background-color: var(--notification-bg);
  color: var(--notification-color);
  font-weight: 700;
  user-select: none;
  transition: 0.15s ease-in;
}

.container input[type="radio"]:checked + label {
  color: var(--tab-active-color);
}

.container input[type="radio"]:checked + label > .notification {
  background-color: var(--tab-active-color);
  color: #fff;
}

.dropdown {
  position: relative;
  width: 140px;
  user-select: none;
}

.dropdown-btn {
  background-color: transparent;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  padding: 5px 12px;
  border-radius: 99px;
  color: var(--tab-color);
  transition: color 0.15s ease-in;
  width: 100%;
  text-align: left;
  box-sizing: border-box;
}

.dropdown-btn:hover,
.dropdown-btn.active {
  color: var(--tab-active-color);
}

.dropdown-menu {
  position: absolute;
  top: 110%;
  left: 0;
  width: 100%;
  background: var(--dropdown-bg);
  box-shadow: 0 5px 12px rgba(24, 94, 224, 0.15);
  border-radius: 8px;
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
  opacity: 0;
  pointer-events: none;
  z-index: 10;
  color: var(--dropdown-color);
}

.dropdown-menu.open {
  max-height: 500px;
  opacity: 1;
  pointer-events: auto;
}

.dropdown-item {
  padding: 10px 15px;
  cursor: pointer;
  transition: background-color 0.15s ease-in;
}

.dropdown-item:hover {
  background-color: var(--dropdown-hover-bg);
}

.glider {
  position: absolute;
  height: 30px;
  width: 140px;
  background-color: var(--glider-bg);
  z-index: 1;
  border-radius: 99px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.container input[id="radio-blog"]:checked ~ .glider {
  transform: translateX(calc(100% + 1.5rem));
}

@media (max-width: 700px) {
  .tabs {
    transform: scale(0.75);
  }
}

.run-btn {
  background-color: var(--run-btn-bg);
  border: none;
  padding: 12px 25px;
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
  border-radius: 8px;
  cursor: pointer;
  margin-top: 15px;
  transition: background-color 0.3s ease;
}

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

.run-btn:disabled {
  background-color: #6a8ce3;
  cursor: not-allowed;
}

#output {
  margin-top: 20px;
  background: var(--output-bg);
  color: var(--output-color);
  font-family: monospace;
  padding: 15px;
  border-radius: 8px;
  min-height: 140px;
  white-space: pre-wrap;
  user-select: text;
  overflow-y: auto;
}

#blog-updates {
  background: var(--dropdown-bg);
  border-radius: 8px;
  padding: 15px;
  max-height: 320px;
  overflow-y: auto;
  box-shadow: 0 0 10px rgb(0 0 0 / 0.1);
  color: var(--dropdown-color);
}

#blog-updates h2 {
  margin-top: 0;
}

.blog-post {
  border-bottom: 1px solid #ddd;
  padding: 10px 0;
}

.blog-post:last-child {
  border-bottom: none;
}

.blog-post-title {
  font-weight: 700;
  font-size: 1rem;
  margin: 0 0 5px 0;
}

.blog-post-date {
  font-size: 0.8rem;
  color: #666;
}

.blog-post-content {
  margin-top: 4px;
  font-size: 0.9rem;
  color: #333;
}

.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--theme-toggle-bg);
  color: white;
  border: none;
  padding: 10px 15px;
  font-weight: 600;
  border-radius: 30px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  z-index: 9999;
}

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

body.dark {
  --bg-color: #121212;
  --tab-bg: #1f1f1f;
  --tab-color: #aaa;
  --tab-active-color: #69aaff;
  --notification-bg: #69aaff;
  --notification-color: #000;
  --glider-bg: #184fa0;
  --output-bg: #222;
  --output-color: #0f0;
  --dropdown-bg: #1f1f1f;
  --dropdown-hover-bg: #184fa0;
  --dropdown-color: #eee;
  --run-btn-bg: #69aaff;
  --run-btn-hover-bg: #185ee0;
  --theme-toggle-bg: #69aaff;
  --theme-toggle-hover-bg: #185ee0;
}