/* ============================================================
   AI Rules Generator — theme-aware, dependency-free stylesheet
   ============================================================ */

:root {
  color-scheme: light dark;

  --bg:        #f6f7fb;
  --bg-grad-1: #eef1fb;
  --bg-grad-2: #f7f6fb;
  --surface:   #ffffff;
  --surface-2: #f3f4f9;
  --surface-3: #eceef6;
  --border:    #e2e5ef;
  --border-strong: #d3d7e6;
  --text:      #1b1f2a;
  --text-dim:  #5a6072;
  --text-mute: #878da0;
  --muted:     #6b7185;

  --accent:      #5b5bff;
  --accent-2:    #7c5cff;
  --accent-soft: rgba(91, 91, 255, 0.10);
  --accent-line: rgba(91, 91, 255, 0.30);
  --accent-text: #4a44e0;

  --ok:      #17915a;
  --ok-bg:   rgba(23, 145, 90, 0.10);
  --err:     #c23b47;
  --err-bg:  rgba(194, 59, 71, 0.10);
  --warn:    #b7791f;

  --code-bg:   #12141d;
  --code-text: #e6e8f2;

  --radius:    14px;
  --radius-sm: 9px;
  --shadow:    0 1px 2px rgba(20, 23, 40, 0.04), 0 8px 30px rgba(20, 23, 40, 0.06);
  --shadow-lg: 0 12px 40px rgba(20, 23, 40, 0.14);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #0c0d13;
    --bg-grad-1: #12131d;
    --bg-grad-2: #0c0d13;
    --surface:   #16171f;
    --surface-2: #1c1e28;
    --surface-3: #232634;
    --border:    #262835;
    --border-strong: #333749;
    --text:      #e9ebf3;
    --text-dim:  #a4a9bd;
    --text-mute: #6f7590;
    --muted:     #8b90a6;

    --accent:      #7b7bff;
    --accent-2:    #9d7cff;
    --accent-soft: rgba(123, 123, 255, 0.14);
    --accent-line: rgba(123, 123, 255, 0.38);
    --accent-text: #a9a6ff;

    --ok:      #45c58a;
    --ok-bg:   rgba(69, 197, 138, 0.14);
    --err:     #ff7a86;
    --err-bg:  rgba(255, 122, 134, 0.13);
    --warn:    #e0b25a;

    --code-bg:   #0a0b11;
    --code-text: #dfe2ef;

    --shadow:    0 1px 2px rgba(0,0,0,0.3), 0 10px 34px rgba(0,0,0,0.4);
    --shadow-lg: 0 16px 50px rgba(0,0,0,0.5);
  }
}

/* Manual overrides win in both directions */
:root[data-theme="light"] {
  color-scheme: light;
  --bg:#f6f7fb; --bg-grad-1:#eef1fb; --bg-grad-2:#f7f6fb;
  --surface:#ffffff; --surface-2:#f3f4f9; --surface-3:#eceef6;
  --border:#e2e5ef; --border-strong:#d3d7e6;
  --text:#1b1f2a; --text-dim:#5a6072; --text-mute:#878da0; --muted:#6b7185;
  --accent:#5b5bff; --accent-2:#7c5cff; --accent-soft:rgba(91,91,255,0.10);
  --accent-line:rgba(91,91,255,0.30); --accent-text:#4a44e0;
  --ok:#17915a; --ok-bg:rgba(23,145,90,0.10); --err:#c23b47; --err-bg:rgba(194,59,71,0.10);
  --code-bg:#12141d; --code-text:#e6e8f2;
  --shadow:0 1px 2px rgba(20,23,40,0.04),0 8px 30px rgba(20,23,40,0.06);
  --shadow-lg:0 12px 40px rgba(20,23,40,0.14);
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg:#0c0d13; --bg-grad-1:#12131d; --bg-grad-2:#0c0d13;
  --surface:#16171f; --surface-2:#1c1e28; --surface-3:#232634;
  --border:#262835; --border-strong:#333749;
  --text:#e9ebf3; --text-dim:#a4a9bd; --text-mute:#6f7590; --muted:#8b90a6;
  --accent:#7b7bff; --accent-2:#9d7cff; --accent-soft:rgba(123,123,255,0.14);
  --accent-line:rgba(123,123,255,0.38); --accent-text:#a9a6ff;
  --ok:#45c58a; --ok-bg:rgba(69,197,138,0.14); --err:#ff7a86; --err-bg:rgba(255,122,134,0.13);
  --code-bg:#0a0b11; --code-text:#dfe2ef;
  --shadow:0 1px 2px rgba(0,0,0,0.3),0 10px 34px rgba(0,0,0,0.4);
  --shadow-lg:0 16px 50px rgba(0,0,0,0.5);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(1200px 500px at 12% -8%, var(--accent-soft), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(124,92,255,0.08), transparent 55%),
    linear-gradient(180deg, var(--bg-grad-1), var(--bg-grad-2));
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
  font-size: 15px;
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 22px 60px;
}

/* ---------- Header ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 18px var(--accent-line);
  flex-shrink: 0;
}
.brand-text h1 { margin: 0; font-size: 1.32rem; letter-spacing: -0.02em; }
.brand-text p { margin: 2px 0 0; color: var(--muted); font-size: 0.86rem; max-width: 44ch; }

.header-actions { display: flex; align-items: center; gap: 10px; }
.pro-badge {
  font-size: 0.68rem; font-weight: 800; letter-spacing: 0.08em;
  color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  padding: 4px 9px; border-radius: 999px;
  box-shadow: 0 4px 12px var(--accent-line);
}
.icon-btn {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); }
.icon-sun { display: none; }
.icon-moon { display: block; }
:root[data-theme="dark"] .icon-sun,
html:not([data-theme="light"]) .icon-sun { }
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .icon-sun { display: block; }
  html:not([data-theme="light"]) .icon-moon { display: none; }
}
:root[data-theme="dark"] .icon-sun { display: block; }
:root[data-theme="dark"] .icon-moon { display: none; }
:root[data-theme="light"] .icon-sun { display: none; }
:root[data-theme="light"] .icon-moon { display: block; }

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 20px;
  align-items: start;
}
@media (max-width: 940px) {
  .layout { grid-template-columns: 1fr; }
}

.panel { min-width: 0; }
.config-panel { display: flex; flex-direction: column; gap: 16px; }
.output-panel { position: sticky; top: 18px; }
@media (max-width: 940px) {
  .output-panel { position: static; }
}

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px 20px;
  box-shadow: var(--shadow);
}
.card-head { margin-bottom: 14px; }
.card-head h2 {
  margin: 0; font-size: 1rem; letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 9px;
}
.card-head .muted { margin: 4px 0 0; font-size: 0.83rem; }
.muted { color: var(--muted); }
.opt { color: var(--text-mute); font-weight: 400; }

/* ---------- Fields ---------- */
.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 14px;
  margin-bottom: 14px;
}
@media (max-width: 480px) { .field-grid { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 6px; }
.field-label { font-size: 0.78rem; font-weight: 600; color: var(--text-dim); }

.control {
  width: 100%;
  font-family: var(--font);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 11px;
  transition: border-color .15s, box-shadow .15s, background .15s;
  appearance: none;
}
.control.mono { font-family: var(--mono); font-size: 0.82rem; letter-spacing: 0.02em; }
select.control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b90a6' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 11px center;
  padding-right: 30px;
  cursor: pointer;
}
.control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  background: var(--surface);
}
.control::placeholder { color: var(--text-mute); }

/* ---------- Chip group (frameworks) ---------- */
.chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.82rem; font-weight: 500;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-dim);
  cursor: pointer;
  user-select: none;
  transition: all .14s;
}
.chip:hover { border-color: var(--border-strong); color: var(--text); }
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip.checked {
  background: var(--accent-soft);
  border-color: var(--accent-line);
  color: var(--accent-text);
  font-weight: 600;
}
.chip .chk { width: 6px; height: 6px; border-radius: 50%; background: currentColor; opacity: .35; }
.chip.checked .chk { opacity: 1; }

/* ---------- Tool group ---------- */
.tool-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
}
@media (max-width: 480px) { .tool-group { grid-template-columns: 1fr; } }
.tool-opt {
  position: relative;
  display: flex; align-items: center; gap: 10px;
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  cursor: pointer;
  transition: all .14s;
}
.tool-opt:hover { border-color: var(--border-strong); }
.tool-opt input { position: absolute; opacity: 0; pointer-events: none; }
.tool-opt .tick {
  width: 18px; height: 18px; flex-shrink: 0;
  border-radius: 6px;
  border: 1.5px solid var(--border-strong);
  display: grid; place-items: center;
  color: #fff;
  transition: all .14s;
}
.tool-opt .tick svg { opacity: 0; transform: scale(.6); transition: all .14s; }
.tool-opt.checked { border-color: var(--accent-line); background: var(--accent-soft); }
.tool-opt.checked .tick { background: var(--accent); border-color: var(--accent); }
.tool-opt.checked .tick svg { opacity: 1; transform: scale(1); }
.tool-opt .tool-meta { min-width: 0; }
.tool-opt .tool-name { font-size: 0.86rem; font-weight: 600; display: block; }
.tool-opt .tool-file { font-size: 0.72rem; color: var(--text-mute); font-family: var(--mono); display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tool-opt.disabled { opacity: .5; cursor: not-allowed; }
.tool-opt.disabled:hover { border-color: var(--border); }

/* ---------- Advanced toggles ---------- */
.pro-card { position: relative; }
.lock-tag {
  font-size: 0.62rem; font-weight: 800; letter-spacing: 0.07em;
  padding: 3px 7px; border-radius: 999px;
  background: var(--surface-3); color: var(--text-mute);
  border: 1px solid var(--border);
}
.pro-card.unlocked .lock-tag { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color:#fff; border-color: transparent; }
.toggle-list { display: flex; flex-direction: column; gap: 6px; }
.toggle-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background .14s, border-color .14s;
}
.toggle-row:hover { background: var(--surface-2); }
.toggle-info { min-width: 0; }
.toggle-info .t-name { font-size: 0.86rem; font-weight: 600; }
.toggle-info .t-desc { font-size: 0.76rem; color: var(--muted); margin-top: 1px; }
.switch { position: relative; width: 40px; height: 23px; flex-shrink: 0; }
.switch input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.switch .track {
  position: absolute; inset: 0;
  background: var(--border-strong);
  border-radius: 999px;
  transition: background .16s;
}
.switch .track::after {
  content: ""; position: absolute; top: 3px; left: 3px;
  width: 17px; height: 17px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.25);
  transition: transform .16s;
}
.switch input:checked + .track { background: var(--accent); }
.switch input:checked + .track::after { transform: translateX(17px); }
.pro-card.locked .toggle-list { opacity: .5; pointer-events: none; filter: grayscale(0.3); }
.switch input:disabled { cursor: not-allowed; }

/* ---------- Generate ---------- */
.generate-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font); font-size: 0.87rem; font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  padding: 9px 15px;
  cursor: pointer;
  transition: all .14s;
  white-space: nowrap;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 16px var(--accent-line);
}
.btn-primary:hover { filter: brightness(1.06); box-shadow: 0 8px 22px var(--accent-line); }
.btn-lg { padding: 12px 22px; font-size: 0.94rem; }
.btn-ghost {
  color: var(--text-dim);
  background: var(--surface-2);
  border-color: var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-3); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.gen-status { font-size: 0.82rem; color: var(--muted); }
.gen-status.ok { color: var(--ok); }
.gen-status.err { color: var(--err); }

/* ---------- Output ---------- */
.output-card { padding: 0; overflow: hidden; }
.output-head {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 12px 12px 0 14px;
  flex-wrap: wrap;
}
.tabs { display: flex; gap: 3px; flex-wrap: wrap; min-width: 0; }
.tab {
  font-size: 0.78rem; font-weight: 600;
  padding: 7px 12px;
  border-radius: 8px 8px 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  background: transparent;
  color: var(--text-mute);
  cursor: pointer;
  transition: all .13s;
  white-space: nowrap;
}
.tab:hover { color: var(--text); background: var(--surface-2); }
.tab.active {
  color: var(--accent-text);
  background: var(--surface-2);
  border-color: var(--border);
}
.output-actions { display: flex; gap: 7px; padding-bottom: 8px; flex-wrap: wrap; }
.output-actions .btn { padding: 7px 11px; font-size: 0.8rem; }

.filepath-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 8px 14px;
  background: var(--surface-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
}
.filepath-icon { display: inline-flex; color: var(--text-mute); }
.filepath { font-family: var(--mono); font-size: 0.78rem; color: var(--text-dim); }

.code-box {
  margin: 0;
  background: var(--code-bg);
  max-height: 62vh;
  overflow: auto;
  padding: 16px 18px;
}
@media (max-width: 940px) { .code-box { max-height: 480px; } }
.code {
  font-family: var(--mono);
  font-size: 0.79rem;
  line-height: 1.65;
  color: var(--code-text);
  white-space: pre;
  display: block;
  tab-size: 2;
}

/* ---------- Unlock ---------- */
.unlock-section { margin-top: 22px; }
.unlock-card {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 26px;
  align-items: center;
  border: 1px solid var(--accent-line);
  background:
    linear-gradient(180deg, var(--accent-soft), transparent 40%),
    var(--surface);
}
@media (max-width: 720px) { .unlock-card { grid-template-columns: 1fr; gap: 18px; } }
.unlock-copy h2 { margin: 0 0 6px; font-size: 1.1rem; }
.unlock-copy .muted { font-size: 0.86rem; }
.perk-list { list-style: none; padding: 0; margin: 14px 0 18px; display: flex; flex-direction: column; gap: 7px; }
.perk-list li {
  position: relative; padding-left: 24px;
  font-size: 0.85rem; color: var(--text-dim);
}
.perk-list li::before {
  content: ""; position: absolute; left: 0; top: 6px;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
}
.perk-list li::after {
  content: ""; position: absolute; left: 5px; top: 9px;
  width: 5px; height: 3px;
  border-left: 1.5px solid var(--accent); border-bottom: 1.5px solid var(--accent);
  transform: rotate(-45deg);
}
.unlock-form {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex; flex-direction: column; gap: 12px;
}
.unlock-buttons { display: flex; gap: 9px; }
.license-status { margin: 0; font-size: 0.82rem; min-height: 1.2em; }
.license-status.ok { color: var(--ok); }
.license-status.err { color: var(--err); }
.license-status.warn { color: var(--warn); }
.license-status.pending { color: var(--muted); }

/* ---------- Footer ---------- */
.site-footer { margin-top: 30px; text-align: center; }
.site-footer p { font-size: 0.8rem; color: var(--muted); margin: 0; }
.sep { opacity: .5; margin: 0 6px; }

/* ---------- Utils ---------- */
.hidden { display: none !important; }
code { font-family: var(--mono); font-size: 0.86em; }
::selection { background: var(--accent-soft); }

.code-box::-webkit-scrollbar { width: 10px; height: 10px; }
.code-box::-webkit-scrollbar-thumb { background: #2a2d3a; border-radius: 10px; border: 2px solid var(--code-bg); }
.code-box::-webkit-scrollbar-track { background: transparent; }

/* toast */
.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--text); color: var(--surface);
  font-size: 0.83rem; font-weight: 600;
  padding: 10px 18px; border-radius: 999px;
  box-shadow: var(--shadow-lg);
  opacity: 0; pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 50;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }