/* Tab styling as specified in the design guidelines */
.tab {
  overflow: hidden;
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  background: transparent;
  border-radius: 0;
  border: 1px solid #ddd;
  padding: 0;
}

.tab button {
  float: none;
  background-color: #fff;
  border: none;
  border-right: 1px solid #ddd;
  border-radius: 0;
  outline: none;
  cursor: pointer;
  padding: 15px 20px;
  transition: 0.3s;
  font-size: 15px;
  color: #333;
  margin: 0;
  flex-grow: 1;
  font-weight: 500;
  text-align: center;
}

.tab button:last-child {
  border-right: none;
}

.tab button:hover {
  background-color: #f9f9f9;
}

.tab button.active {
  background-color: #4CAF50;
  color: white;
  border-color: #4CAF50;
}

.tabcontent {
  display: none;
  padding: 15px;
  border: 1px solid #ddd;
  border-radius: 5px;
  width: 100%;
  box-sizing: border-box;
  animation: fadeIn 0.5s;
}

@keyframes fadeIn {
  from {opacity: 0;}
  to {opacity: 1;}
}

/* ===============================
   DARK THEME STYLES
   =============================== */

/* Dark Theme Variables */
body.dark-theme {
    --dark-bg-primary: #121212;
    --dark-bg-secondary: #1e1e1e;
    --dark-bg-tertiary: #2d2d2d;
    --dark-surface-1: #2c2c2c;
    --dark-surface-2: #383838;
    --dark-surface-3: #404040;
    --dark-text-primary: #ffffff;
    --dark-text-secondary: #b3b3b3;
    --dark-text-muted: #8a8a8a;
    --dark-border: #404040;
    --dark-border-light: #525252;
    --dark-primary: #66BB6A;
    --dark-primary-dark: #4CAF50;
    --dark-accent: #FFB74D;
}

/* Tab Container Dark Theme */
body.dark-theme .tab {
    border: 1px solid var(--dark-border);
    background: transparent;
}

/* Tab Buttons Dark Theme */
body.dark-theme .tab button {
    background-color: var(--dark-surface-1);
    color: var(--dark-text-primary);
    border-right: 1px solid var(--dark-border);
}

body.dark-theme .tab button:hover {
    background-color: var(--dark-surface-2);
}

body.dark-theme .tab button.active {
    background-color: var(--dark-primary);
    color: var(--dark-bg-primary);
    border-color: var(--dark-primary);
}

/* Tab Content Dark Theme */
body.dark-theme .tabcontent {
    border: 1px solid var(--dark-border);
    background-color: var(--dark-bg-primary);
    color: var(--dark-text-primary);
}

/* Tab Content Headers Dark Theme */
body.dark-theme .tabcontent h1,
body.dark-theme .tabcontent h2,
body.dark-theme .tabcontent h3,
body.dark-theme .tabcontent h4,
body.dark-theme .tabcontent h5,
body.dark-theme .tabcontent h6 {
    color: var(--dark-text-primary);
}

/* Tab Content Paragraphs Dark Theme */
body.dark-theme .tabcontent p {
    color: var(--dark-text-secondary);
}

/* ===============================
   MOBILE RESPONSIVE STYLES
   =============================== */

/* Mobile-first responsive tabs */
@media (max-width: 768px) {
  .tab {
    flex-direction: column;
    border: none;
  }
  
  .tab button {
    border-right: none;
    border-bottom: 1px solid #ddd;
    padding: 12px 15px;
    font-size: 16px;
    flex-grow: 0;
    text-align: left;
    border-radius: 0;
  }
  
  .tab button:last-child {
    border-bottom: none;
  }
  
  .tab button.active {
    border-left: 4px solid #4CAF50;
    background-color: #f0f8f0;
    color: #333;
    font-weight: 600;
  }
  
  /* Dark theme mobile adjustments */
  body.dark-theme .tab button {
    border-bottom: 1px solid var(--dark-border);
  }
  
  body.dark-theme .tab button.active {
    border-left: 4px solid var(--dark-primary);
    background-color: var(--dark-surface-2);
    color: var(--dark-text-primary);
  }
}

/* Small mobile devices */
@media (max-width: 480px) {
  .tab button {
    padding: 14px 15px;
    font-size: 15px;
  }
  
  /* Ensure touch targets are at least 44px high */
  .tab button {
    min-height: 44px;
    display: flex;
    align-items: center;
  }
}