/* ==============================
   CSS Variables for Theming
============================== */
:root {
  --feature-color: #32cd32;
  --line-color: #555555;
  --dark-color: #063706;
  --text-color: #eee;
  --muted: #aaa;
  --bg: #111;
  --card-bg: #1a1a1a;
  --card-border: #333;
  --card-shadow: rgba(0, 0, 0, 0.2);
}

body.light {
  --text-color: #111;
  --muted: #111;
  --bg: #fff;
  --card-bg: #fff;
  --card-border: #e1e4e8;
  --card-shadow: rgba(0, 0, 0, 0.1);
}

/* ==============================
   Base Styles
============================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, sans-serif;
}

body {
  display: flex;
  min-height: 100vh;
  color: var(--text-color);
  background: var(--bg);
  line-height: 1.55;
  transition: background .3s ease, color .3s ease;
}

/* ==============================
   Controls & Forms
============================== */
.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

label {
  font-size: 0.9rem;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

input, select {
  padding: 0.5rem;
  border: 1px solid var(--card-border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text-color);
  font-size: 0.9rem;
}

.form-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 4px 0;
}

input[type="number"] { width: 60px; }
input[type="checkbox"] { width: auto; }

/* ==============================
   Buttons
============================== */
.btn {
  display: inline-block;
  vertical-align: middle;
  text-align: center;
  font-weight: 550;
  color: black !important;
  transition: filter 0.2s ease, background-color 0.2s ease;
  user-select: none;
  padding: 0.25rem 0.25rem;
  font-size: 1.05rem;
}

.btn i { margin-right: 5px; }

.btn:hover, .btn:focus, .btn:focus-visible {
  filter: brightness(var(--hover-brightness)) !important;
  transform: scale(1.05);
}

.btn:active {
  filter: brightness(var(--active-brightness)) !important;
}

.btn:disabled {
  background-color: #e0e0e0 !important;
  color: #888 !important;
  border-color: #ccc !important;
  cursor: not-allowed !important;
  opacity: 1 !important;
  filter: none !important;
  transform: none !important;
}

.action-btn {
  margin: 0.4rem 0;
  background: #333;
  border: none;
  padding: 0.5rem;
  border-radius: 4px;
  color: #fff;
  cursor: pointer;
  width: 100%;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.2s;
}
.action-btn:hover { background: #555; }

/* ==============================
   Floating Control Buttons
============================== */
.control-panel {
  position: fixed;
  bottom: 1vmin;
  left: 1vmin;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: transparent !important;
  border-radius: 10px;
  padding: 0.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}

.control-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background-color: var(--feature-color);
  border: 1px solid var(--dark-color);
  border-radius: 8px;
  font-size: 1rem;
  color: #333;
  cursor: pointer;
  transition: all 0.2s ease;
}
.control-btn:hover {
  background-color: var(--dark-color);
  color: #fff;
  transform: scale(1.05);
}

/* ==============================
    Side Navigation Drawer
============================== */
.sidenav {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: 300px;                       /* full width of drawer */
  background: var(--card-bg, #222);
  border-left: 1px solid var(--card-border, #333);
  box-shadow: -2px 0 8px rgba(0, 0, 0, 0.4);
  z-index: 1000;

  transform: translateX(100%);        /* start hidden */
  transition: transform 0.3s ease-in-out;

  display: flex;                      /* row layout: tabs + panels */
  flex-direction: row;
  overflow: hidden;
}
.sidenav.open { transform: translateX(0); }

/* Toggle button */
.toggle-panel-btn {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background: var(--feature-color);
  border: 1px solid var(--dark-color);
  color: #111;
  padding: 0.2rem;
  border-radius: 8px;
  cursor: pointer;
  z-index: 1100;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  transition: background 0.2s;
}
.toggle-panel-btn:hover {
  background-color: var(--dark-color);
  color: #fff;
  transform: scale(1.05);
}

/* ==============================
   Vertical Tabs
============================== */
.sidenav-tabs {
  display: flex;
  flex-direction: column;
  width: 50px;
  background: transparent;
  border-right: 1px solid #333;
}
.tab-btn {
  padding: 1rem;
  background: transparent;
  color: var(--text-color);
  border: none;
  border-bottom: 1px solid #333;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s;
  font-size: 0.9rem;
}
.tab-btn:hover { background: #333; }
.tab-btn.active { background: var(--feature-color); }


/* ==============================
    Panel Area
============================== */
.sidenav {
  width: 380px; /* Increased from default */
  max-width: 90vw; /* Limit on larger screens */
}

/* Mobile styles */
@media (max-width: 768px) {
  .sidenav {
    width: 100vw; /* Full width on mobile */
    max-width: 100vw;
    height: 100vh; /* Full height on mobile */
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
  }
  
  .sidenav-panels {
    padding: 1.5rem; /* Slightly reduced padding on mobile */
  }
  
  /* Ensure content is scrollable on mobile */
  .sidenav-panels {
    height: 100%;
    overflow-y: auto;
  }
}

/* Larger screens */
@media (min-width: 1200px) {
  .sidenav {
    width: 420px; /* Even wider on very large screens */
  }
}

.sidenav-panels {
  flex: 1;
  padding: 2rem;
  overflow-y: auto;
}

.sidenav-panels .panel { 
  display: none; 
}

.sidenav-panels .panel.active { 
  display: block; 
}

/* Panel body with footer stickiness */
.panel-body {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.panel-body .content { 
  flex: 1; 
}

.panel-body .footer {
  margin-top: auto;
  font-size: 0.85rem;
  color: #666;
}

.panel-header {
  padding: 15px 20px;
  border-bottom: 1px solid var(--dark-color);
  margin: -20px -20px 20px -20px;
  background: transparent;
}

.panel-header h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-color);
}

.panel-header .bi {
  color: var(--feature-color);
}

.config-group {
  margin-bottom: 25px;
}

.config-group h3 {
  color: var(--feature-color);
  font-size: 14px;
  margin-bottom: 12px;
  font-weight: 500;
}

.config-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 15px;
}

.config-option {
  flex: 1;
  min-width: 120px;
}

.config-option input {
  display: none;
}

.config-option label {
  display: block;
  padding: 6px;
  background: var(--card-bg);
  border: 1px solid #e9ecef;
  border-radius: 8px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 12px;
  color: var(--text-color);
}

.config-option label:hover {
  background: var(--feature-color);
}

.config-option input:checked + label {
  background: var(--feature-color);
  color: var(--text-color);
  border-color: var(--feature-color);
  box-shadow: 0 4px 8px rgba(52, 152, 219, 0.2);
}