:root {
  --bg: #0f1115;
  --panel: #181b22;
  --panel-2: #20242d;
  --text: #e8ecf1;
  --muted: #8a93a3;
  --accent: #6ea8ff;
  --border: #2a2f3a;
  --ok: #3ddc84;
}

*, *::before, *::after { box-sizing: border-box; }
/* ===================== HEADER ===================== */
.header {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}
.header-title { font-size: 18px; margin: 0; letter-spacing: .3px; }
.header-title span { color: var(--accent); }
.header-tools { display: flex; gap: 8px; align-items: center; }

.btn-copy { background: transparent; border: none; color: var(--muted); cursor: pointer; padding: 4px; font-size: 14px; }
.btn-copy:hover { color: var(--accent); }
.btn-copy-wide { width: 100%; justify-content: center; margin-top: 8px; }

/* ===================== LAYOUT ===================== */
.main {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 20px;
  padding: 20px;
  max-width: 1400px;
  margin: 0 auto;
}
@media (max-width: 900px) { .main { grid-template-columns: 1fr; } }

/* ===================== PANEL ===================== */
.panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
}
.panel-heading {
  font-size: 14px;
  margin: 0 0 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.panel-heading-spaced { margin-top: 18px; }

/* ===================== PICKER ===================== */
.picker-wrap { display: flex; flex-direction: column; gap: 14px; }

.preview {
  height: 160px;
  border-radius: 12px;
  border: 1px solid var(--border);
  display: flex;
  align-items: flex-end;
  padding: 12px;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 22px;
  font-weight: 700;
  text-shadow: 0 1px 2px rgba(0,0,0,.4);
  transition: background .2s, color .2s;
}

.native-row { display: flex; gap: 8px; align-items: center; }
.native-picker {
  width: 56px; height: 42px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  padding: 2px;
}
.hex-input {
  flex: 1;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  font-family: ui-monospace, monospace;
  font-size: 15px;
}
.hex-input:focus { outline: none; border-color: var(--accent); }

/* ===================== SLIDERS ===================== */
.sliders { display: grid; grid-template-columns: 40px 1fr 48px; gap: 8px; align-items: center; }
.sliders-label { color: var(--muted); font-size: 13px; }
.sliders-range { accent-color: var(--accent); }
.sliders-val { font-family: ui-monospace, monospace; font-size: 13px; text-align: right; color: var(--muted); }

/* ===================== TOGGLE ===================== */
.toggle {
  display: flex; align-items: center; gap: 10px;
  cursor: pointer; user-select: none;
  padding: 10px 12px;
  background: #7988a9;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.toggle-input { display: none; }
.toggle-switch {
  width: 36px; height: 20px;
  background: #3a3f4b;
  border-radius: 20px;
  position: relative;
  transition: .2s;
}
.toggle-switch::after {
  content: "";
  position: absolute; top: 2px; left: 2px;
  width: 16px; height: 16px;
  background: #fff;
  border-radius: 50%;
  transition: .2s;
}
.toggle-input:checked + .toggle-switch { background: var(--accent); }
.toggle-input:checked + .toggle-switch::after { left: 18px; }
.toggle-label { flex: 1; font-size: 13px; }
.toggle-aa { font-weight: 800; font-family: ui-monospace, monospace; color: #000; }

/* ===================== FORMATS ===================== */
.formats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.fmt {
  background: #ecf2ff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.fmt-key { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .5px; }
.fmt-val { font-family: ui-monospace, monospace; font-size: 12px; word-break: break-all; }

/* ===================== TOP 10 ===================== */
.top10 { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }

.usecase {
  background: #d9e5ff;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.usecase-title { font-size: 12px; color: #000; margin-bottom: 4px; text-transform: uppercase; letter-spacing: .5px; }
.usecase-code {
  display: block;
  font-family: ui-monospace, monospace;
  font-size: 12.5px;
  background: var(--panel);
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  word-break: break-all;
  color: var(--text);
}
.meta { padding: 10px 12px; border-top: 1px solid var(--border); }

/* ===================== DEMO ZONES ===================== */
.demo {
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  padding: 12px;
}
.demo-text        { background: #111; color: var(--c); font-size: 16px; }
.demo-bg          { background: var(--c); color: var(--fg); width: 100%; }
.demo-border      { background: transparent; border: 2px solid var(--c); color: var(--c); }
.demo-shadow      { background: transparent; }
.demo-shadow-box  { width: 80px; height: 50px; background: #fff; border-radius: 10px; box-shadow: 0 8px 24px var(--c-alpha); }
.demo-text-shadow { background: #111; color: #fff; text-shadow: 0 2px 8px var(--c); font-size: 20px; font-weight: 700; }
.demo-gradient    { background: linear-gradient(135deg, var(--c), #1a1a1a); color: var(--fg); width: 100%; }
.demo-outline     { background: transparent; color: var(--c); }
.demo-outline-box { outline: 3px solid var(--c); outline-offset: 4px; padding: 14px; border-radius: 8px; font-weight: 600; }
.demo-underline   { background: #111; color: #fff; font-size: 18px; text-decoration: underline; text-decoration-color: var(--c); text-decoration-thickness: 3px; }
.demo-caret       { background: #111; }
.demo-caret-input { caret-color: var(--c); background: #1a1a1a; color: #fff; border: 1px solid #333; padding: 8px; border-radius: 6px; width: 80%; font-family: inherit; font-size: 13px; }
.demo-accent      { background: #1a1a1a; gap: 10px; }
.demo-accent-input{ accent-color: var(--c); width: 18px; height: 18px; }
.demo-accent-range{ accent-color: var(--c); width: 80px; }

/* ===================== HISTORY ===================== */
.history { display: flex; flex-wrap: wrap; gap: 6px; }
.swatch {
  width: 32px; height: 32px;
  border-radius: 6px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: transform .15s;
  position: relative;
}
.swatch:hover { transform: scale(1.15); }

/* ===================== TOAST ===================== */
.toast {
  position: fixed; bottom: 20px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--ok); color: #052312;
  padding: 10px 18px; border-radius: 8px; font-weight: 600;
  opacity: 0; transition: .25s; pointer-events: none; z-index: 100;
}
.toast-visible { opacity: 1; transform: translateX(-50%) translateY(0); }