/* ==========================================================================
   CSSPainter — tools.css   v8
   Tool page layout · Controls panel · Preview · Code output
   ========================================================================== */

/* ── Tool Page Shell ── */
.tool-page {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 20px 0;
}
.tool-heading { margin-bottom: 18px; }
.tool-heading h1 {
  font-size: clamp(1.25rem, 2.1vw, 1.65rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.2;
  color: var(--tx);
}
.tool-heading p { font-size: .8rem; color: var(--tx2); margin-top: 5px; line-height: 1.6; max-width: 640px; }

/* ── Two-column wrapper ── */
.tool-wrapper {
  display: grid;
  grid-template-columns: 252px 1fr;
  gap: 14px;
  align-items: start;
  padding-bottom: 32px;
  min-width: 0;
}

/* ── Controls Panel ── */
.ctrl-panel {
  background: var(--surf);
  border: 1px solid var(--b0);
  border-radius: var(--rl);
  padding: 14px;
  position: sticky;
  top: 70px;
  max-height: calc(100vh - 88px);
  overflow-y: auto;
  overflow-x: hidden;
  width: 252px;
  min-width: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--dim) transparent;
}
.ctrl-panel::-webkit-scrollbar { width: 3px; }
.ctrl-panel::-webkit-scrollbar-thumb { background: var(--dim); border-radius: 3px; }

.ctrl-section { margin-bottom: 16px; }
.ctrl-section:last-child { margin-bottom: 0; }
.ctrl-label {
  display: block;
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--mu);
  margin-bottom: 8px;
}

/* Slider row */
.ctrl-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 9px;
  width: 100%;
  min-width: 0;
}
.ctrl-row label {
  font-size: .76rem;
  color: var(--tx2);
  flex-shrink: 0;
  width: 68px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ctrl-slider {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  min-width: 0;
  max-width: 100%;
  height: 3px;
  background: var(--dim);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}
.ctrl-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  background: var(--acc);
  border-radius: 50%;
  cursor: pointer;
  transition: transform .12s;
  box-shadow: 0 0 0 3px rgba(108,99,255,.2);
}
.ctrl-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }
.ctrl-slider::-moz-range-thumb {
  width: 14px; height: 14px;
  background: var(--acc);
  border-radius: 50%;
  border: none;
  cursor: pointer;
}
.ctrl-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: .7rem;
  color: var(--acc3);
  width: 40px;
  text-align: right;
  flex-shrink: 0;
  overflow: hidden;
  white-space: nowrap;
}

/* Color picker */
.ctrl-color {
  width: 30px; height: 30px;
  border-radius: 7px;
  border: 2px solid var(--b1);
  cursor: pointer;
  padding: 0;
  background: none;
  flex-shrink: 0;
  overflow: hidden;
}
.ctrl-color::-webkit-color-swatch-wrapper { padding: 0; }
.ctrl-color::-webkit-color-swatch { border: none; border-radius: 5px; }

/* Toggle group */
.ctrl-toggle-group { display: flex; gap: 4px; flex-wrap: wrap; }
.ctrl-toggle {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: .74rem;
  font-weight: 500;
  background: var(--surf2);
  border: 1px solid var(--b0);
  color: var(--tx2);
  transition: background var(--t), color var(--t), border-color var(--t);
  cursor: pointer;
  font-family: inherit;
}
.ctrl-toggle.active { background: var(--acc); color: #fff; border-color: var(--acc); }
.ctrl-toggle:hover:not(.active) { border-color: var(--b1); color: var(--tx); }

/* Switch */
.ctrl-switch { display: flex; align-items: center; gap: 8px; margin-bottom: 9px; }
.ctrl-switch input[type="checkbox"] {
  -webkit-appearance: none; appearance: none;
  width: 32px; height: 17px;
  background: var(--dim); border-radius: 17px;
  cursor: pointer; position: relative;
  transition: background .18s; flex-shrink: 0;
}
.ctrl-switch input[type="checkbox"]::after {
  content: ''; position: absolute;
  top: 2px; left: 2px;
  width: 13px; height: 13px;
  background: #fff; border-radius: 50%;
  transition: transform .18s;
}
.ctrl-switch input[type="checkbox"]:checked { background: var(--acc); }
.ctrl-switch input[type="checkbox"]:checked::after { transform: translateX(15px); }
.ctrl-switch label { font-size: .78rem; cursor: pointer; color: var(--tx2); }

/* Color stops */
.stop-list { display: flex; flex-direction: column; gap: 5px; }
.stop-row {
  display: flex; align-items: center; gap: 6px;
  background: var(--surf2); border: 1px solid var(--b0);
  border-radius: 7px; padding: 6px 7px;
  min-width: 0; width: 100%;
}
.stop-row .ctrl-color { width: 24px; height: 24px; flex-shrink: 0; border-radius: 5px; }
.stop-row .ctrl-slider { flex: 1; min-width: 0; }
.stop-row .ctrl-value  { width: 36px; flex-shrink: 0; }
.stop-del {
  width: 20px; height: 20px; border-radius: 4px;
  background: transparent; color: var(--mu);
  font-size: .8rem;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--t), color var(--t);
  flex-shrink: 0; cursor: pointer; font-family: inherit; border: none;
}
.stop-del:hover { background: rgba(224,64,64,.15); color: #e04040; }

/* Shadow layers */
.shadow-layer {
  background: var(--surf2); border: 1px solid var(--b0);
  border-radius: 8px; padding: 10px; margin-bottom: 7px;
  min-width: 0;
}
.shadow-layer:last-child { margin-bottom: 0; }
.shadow-layer-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px;
}
.layer-title { font-size: .68rem; font-weight: 700; color: var(--mu); text-transform: uppercase; letter-spacing: .07em; }

/* Add buttons */
.ctrl-add-btn {
  width: 100%; padding: 7px;
  border-radius: 7px; border: 1px dashed var(--b1);
  background: transparent; color: var(--mu); font-size: .78rem;
  transition: border-color var(--t), color var(--t);
  font-family: inherit; cursor: pointer;
}
.ctrl-add-btn:hover { border-color: var(--acc); color: var(--acc); }

/* Preset grid */
.preset-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.preset-btn {
  padding: 6px 4px; border-radius: 7px;
  background: var(--surf2); border: 1px solid var(--b0);
  color: var(--tx2); font-size: .72rem; font-weight: 500;
  text-align: center;
  transition: background var(--t), border-color var(--t), color var(--t);
  font-family: inherit; cursor: pointer;
}
.preset-btn:hover  { border-color: var(--acc); color: var(--acc); background: rgba(108,99,255,.07); }
.preset-btn.active,
.preset-btn.is-active { background: var(--acc); border-color: var(--acc); color: #fff; }

/* ── Right Panel ── */
.tool-right {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

/* Preview */
.preview-area {
  background: var(--surf); border: 1px solid var(--b0);
  border-radius: var(--rl); padding: 24px;
  display: flex; align-items: center; justify-content: center;
  min-height: 188px; position: relative; overflow: hidden;
}
.preview-bg-checker {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(45deg,#151520 25%,transparent 25%),
    linear-gradient(-45deg,#151520 25%,transparent 25%),
    linear-gradient(45deg,transparent 75%,#151520 75%),
    linear-gradient(-45deg,transparent 75%,#151520 75%);
  background-size: 16px 16px;
  background-position: 0 0,0 8px,8px -8px,-8px 0;
  opacity: .6;
}
.preview-box {
  position: relative; width: 170px; height: 110px;
  border-radius: 10px; transition: all .08s; z-index: 1;
}
.preview-text {
  position: relative; font-size: 50px; font-weight: 800;
  font-family: 'Inter', sans-serif; z-index: 1; line-height: 1;
  color: #fff; user-select: none;
}
.preview-anim-box {
  position: relative; width: 74px; height: 74px;
  background: linear-gradient(135deg,var(--acc),var(--acc2));
  border-radius: 14px; z-index: 1;
}
.preview-replay-btn {
  position: absolute; bottom: 11px; right: 11px;
  padding: 5px 11px; border-radius: 6px;
  background: var(--surf2); border: 1px solid var(--b1);
  color: var(--mu); font-size: .73rem; z-index: 2;
  transition: color var(--t), border-color var(--t); cursor: pointer; font-family: inherit;
}
.preview-replay-btn:hover { color: var(--acc); border-color: var(--acc); }
.preview-glass-bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg,#6c63ff 0%,#ff6b9d 55%,#00d4aa 100%);
  z-index: 0;
}

/* Code area */
.code-area {
  background: var(--surf); border: 1px solid var(--b0);
  border-radius: var(--rl); overflow: hidden;
}
.code-toprow {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; border-bottom: 1px solid var(--b0);
  gap: 8px; flex-wrap: wrap;
}
.code-label {
  font-size: .65rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .1em; color: var(--mu); flex-shrink: 0;
}
.code-actions { display: flex; gap: 5px; flex-wrap: wrap; }
.code-block {
  font-family: 'JetBrains Mono', monospace;
  font-size: .76rem; line-height: 1.75;
  padding: 14px 16px; color: var(--tx2);
  white-space: pre-wrap; word-break: break-all;
  margin: 0; min-height: 58px; overflow-x: auto;
}
/* Syntax highlight colors */
.css-prop  { color: #ff6b9d; }
.css-num   { color: #00d4aa; }
.css-unit  { color: #7c73ff; }
.css-color { color: #ffc84a; }
.css-func  { color: #7dd3a8; }
.css-at    { color: #ff9f43; }

/* ── SEO guide ── */
.tool-guide { max-width: 1280px; margin: 0 auto; padding: 0 20px 56px; }
.tool-guide-inner {
  background: var(--surf); border: 1px solid var(--b0);
  border-radius: var(--rl); padding: 32px 36px;
}
.tool-guide h2 { font-size: 1.1rem; font-weight: 700; margin: 30px 0 10px; color: var(--tx); }
.tool-guide h2:first-child { margin-top: 0; }
.tool-guide h3 { font-size: .9rem; font-weight: 600; margin: 20px 0 7px; color: var(--tx); }
.tool-guide p  { color: var(--tx2); margin-bottom: 12px; line-height: 1.74; }
.tool-guide ul { margin: 8px 0 13px 18px; list-style: disc; }
.tool-guide ul li { color: var(--tx2); margin-bottom: 6px; line-height: 1.64; }
.tool-guide code {
  font-family: 'JetBrains Mono', monospace; font-size: .79em;
  background: var(--surf2); padding: 2px 6px; border-radius: 4px; color: var(--acc2);
}
.tool-guide pre {
  background: var(--surf2); border: 1px solid var(--b0);
  border-radius: 8px; padding: 13px 15px; overflow-x: auto; margin: 12px 0;
}
.tool-guide pre code { background: none; padding: 0; font-size: .78rem; line-height: 1.7; }

/* ── Responsive tools ── */
@media (max-width: 920px) {
  .tool-wrapper { grid-template-columns: 1fr; }
  .ctrl-panel { position: static; max-height: none; width: 100%; }
  .tool-guide-inner { padding: 22px; }
}
@media (max-width: 520px) {
  .code-toprow { flex-direction: column; align-items: flex-start; }
  .code-actions { width: 100%; }
  .tool-guide-inner { padding: 16px; }
}