:root {
  --bg: #0c0f14;
  --panel: #11161d;
  --muted: #9aa4af;
  --text: #e6e9ed;
  --accent: #2e7cf6;
  --accent-2: #5f87ff;
  --border: #1a212b;
  --font-family: "Noto Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --text-scale: 1;
  --button-text: white;
}

html[data-theme="light"] {
  --bg: #ffffff;
  --panel: #f5f5f5;
  --muted: #666666;
  --text: #1a1a1a;
  --border: #e0e0e0;
  --button-text: black;
}

* { box-sizing: border-box }
html, body { height: 100% }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-family);
  font-size: calc(14px * var(--text-scale));
  display: grid;
  grid-template-columns: 220px 1fr;
  grid-template-rows: 100%;
}
.sidebar {
  border-right: 1px solid var(--border);
  padding: 20px 16px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 16px;
  background: var(--panel);
}
.brand {
  font-weight: 700;
  letter-spacing: 0.2px;
  font-size: calc(16px * var(--text-scale));
}
#tabs {
  display: grid;
  gap: 8px;
}
.tab-btn {
  width: 100%;
  text-align: left;
  padding: 11px 13px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--button-text);
  cursor: pointer;
  transition: all 140ms ease;
  font-size: calc(14px * var(--text-scale));
  font-weight: 500;
}
.tab-btn:hover { 
  background: #16202c;
  border-color: var(--border);
}
.tab-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}
.sidebar-footer {
  display: flex;
  gap: 8px;
}
.content {
  padding: 28px;
  min-width: 0;
}
.content-header {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}
.muted { color: var(--muted) }
.section-tools {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 18px;
}
.link-form {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 12px;
}
.field { display: grid; gap: 6px }
label { font-size: calc(12px * var(--text-scale)); color: var(--muted) }
input {
  background: #0b0f15;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  outline: none;
}
input:focus { border-color: var(--accent) }
.primary, .secondary {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}
.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--button-text);
}
.primary:hover { background: var(--accent-2); border-color: var(--accent-2) }
.secondary {
  background: transparent;
  color: var(--button-text);
}
.secondary:hover { background: #121923 }
.links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.link-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  transition: all 160ms ease;
  cursor: pointer;
  text-align: left;
  color: var(--button-text);
}
.link-btn:hover {
  background: #1a242f;
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(46, 124, 246, 0.15);
}
.link-btn .title { 
  font-weight: 600;
  font-size: calc(15px * var(--text-scale));
}
.credit-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
}
.credit-item .title {
  font-weight: 600;
  font-size: calc(15px * var(--text-scale));
}
.icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: #0b0f15;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--muted);
}
@media (max-width: 800px) {
  body { grid-template-columns: 1fr }
  .sidebar { position: sticky; top: 0; z-index: 10 }
  .link-form { grid-template-columns: 1fr; }
}

.settings-panel {
  display: grid;
  gap: 24px;
  max-width: 400px;
}

.settings-group {
  display: grid;
  gap: 10px;
}

.settings-group label {
  font-size: calc(13px * var(--text-scale));
  font-weight: 600;
  color: var(--muted);
}

.settings-select {
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-family);
  outline: none;
}

.settings-select:focus {
  border-color: var(--accent);
}

.settings-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--panel);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.settings-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 1px solid var(--accent-2);
}

.settings-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 1px solid var(--accent-2);
}

.size-value {
  font-size: calc(13px * var(--text-scale));
  color: var(--muted);
}

.code-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(12, 15, 20, 0.95);
  display: grid;
  place-items: center;
  z-index: 1000;
}

.code-modal {
  display: grid;
  gap: 16px;
  padding: 32px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 100%;
  max-width: 320px;
  text-align: center;
}

.code-modal h2 {
  margin: 0;
  font-size: calc(20px * var(--text-scale));
  font-weight: 700;
}

.code-input {
  padding: 12px 14px !important;
  font-size: calc(16px * var(--text-scale)) !important;
  letter-spacing: 2px;
  text-align: center;
}

.code-submit {
  padding: 12px 14px;
  background: var(--accent);
  border: 1px solid var(--accent);
  color: var(--button-text);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: calc(14px * var(--text-scale));
  transition: background 140ms ease;
}

.code-submit:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
}

.code-overlay.hidden {
  display: none;
}