/* ═══════════════════════════════════════════════════════
   n8n.mx AI STUDIO — Design System 2026
═══════════════════════════════════════════════════════ */

/* ── TOKENS ── */
:root {
  --font: 'Space Grotesk', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --ease-spring: cubic-bezier(.22,.68,0,1.2);
  --ease-out: cubic-bezier(.4,0,.2,1);
  --ease-in: cubic-bezier(.4,0,1,1);
  --t: .15s;
  --t-med: .25s;
  --t-slow: .38s;
  --sb-full: 268px;
  --sb-mini: 62px;
  --c-blue:   hsl(220,100%,64%);
  --c-violet: hsl(260,88%,66%);
  --c-teal:   hsl(172,78%,46%);
  --c-amber:  hsl(38,100%,54%);
  --c-rose:   hsl(348,94%,62%);
  --c-sky:    hsl(200,88%,58%);
  --c-lime:   hsl(88,74%,50%);
}

/* ── DARK ── */
[data-theme="dark"] {
  --bg:      #07090f;
  --surf:    #0d1120;
  --surf2:   #111726;
  --surf3:   #161d30;
  --b0:      #18213a;
  --b1:      #1f2c48;
  --b2:      #2a3a5e;
  --text:    #e2e8f8;
  --text2:   #7283aa;
  --text3:   #38496a;
  --accent:  var(--c-blue);
  --a2:      var(--c-violet);
  --a3:      var(--c-teal);
  --danger:  var(--c-rose);
  --warn:    var(--c-amber);
  --bub-u:   #0e1626;
  --bub-a:   #090d1a;
  --code-bg: #05070e;
  --dot:     rgba(255,255,255,.035);
  --glow:    rgba(55,118,255,.14);
  --glow2:   rgba(108,64,255,.08);
}

/* ── LIGHT ── */
[data-theme="light"] {
  --bg:      #f5f7ff;
  --surf:    #ffffff;
  --surf2:   #eef1fb;
  --surf3:   #e4e9f7;
  --b0:      #d4daf0;
  --b1:      #bcc6e0;
  --b2:      #a0aed4;
  --text:    #0c1526;
  --text2:   #445178;
  --text3:   #8898c0;
  --accent:  hsl(220,84%,50%);
  --a2:      hsl(260,74%,54%);
  --a3:      hsl(172,64%,36%);
  --danger:  hsl(348,78%,48%);
  --warn:    hsl(38,88%,44%);
  --bub-u:   #e6ecff;
  --bub-a:   #ffffff;
  --code-bg: #eef1ff;
  --dot:     rgba(0,0,0,.05);
  --glow:    rgba(37,99,235,.09);
  --glow2:   rgba(108,64,255,.05);
}

/* ── RESET ── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { height: 100%; }
body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  background: var(--bg);
  color: var(--text);
  height: 100%;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── DOT GRID ── */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image: radial-gradient(circle, var(--dot) 1px, transparent 1px);
  background-size: 24px 24px;
}
body::after {
  content: '';
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 55% 45% at 0% 0%, var(--glow), transparent 55%),
    radial-gradient(ellipse 45% 40% at 100% 100%, var(--glow2), transparent 55%);
}

/* ══════════════════════════════════════════════════
   APP SHELL
══════════════════════════════════════════════════ */
#app {
  position: relative; z-index: 1;
  display: flex;
  height: 100vh;
  height: 100dvh;
}

/* ══════════════════════════════════════════════════
   SIDEBAR
══════════════════════════════════════════════════ */
#sidebar {
  width: var(--sb-full);
  min-width: var(--sb-full);
  max-width: var(--sb-full);
  background: var(--surf);
  border-right: 1px solid var(--b0);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
  transition:
    width var(--t-slow) var(--ease-out),
    min-width var(--t-slow) var(--ease-out),
    max-width var(--t-slow) var(--ease-out),
    background var(--t-med),
    border-color var(--t-med);
}

/* Gradient top stripe */
#sidebar::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px; z-index: 10;
  background: linear-gradient(90deg, var(--c-blue), var(--c-violet) 40%, var(--c-teal) 80%, var(--c-lime));
  transition: opacity var(--t-med);
}

/* ── COLLAPSED STATE ── */
#sidebar.collapsed {
  width: var(--sb-mini);
  min-width: var(--sb-mini);
  max-width: var(--sb-mini);
  overflow: visible;
}
#sidebar.collapsed::after {
  content: '';
  position: absolute; inset: 0; z-index: -1;
  background: var(--surf);
  border-right: 1px solid var(--b0);
  pointer-events: none;
}

.sb-text {
  overflow: hidden;
  white-space: nowrap;
  transition: opacity var(--t-med) var(--ease-out), max-width var(--t-slow) var(--ease-out);
  max-width: 200px;
}
#sidebar.collapsed .sb-text { opacity: 0; max-width: 0; pointer-events: none; }

/* ── SB HEADER ── */
.sb-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 12px 13px;
  border-bottom: 1px solid var(--b0);
  flex-shrink: 0;
  min-height: 56px;
  background: var(--surf);
  position: relative;
  z-index: 1;
}
#sidebar.collapsed .sb-head { padding: 14px 0 13px; justify-content: center; border-bottom: 1px solid var(--b0); }
#sidebar.collapsed #themeBtn { display: none; }
#sidebar.collapsed #sbToggle {
  position: absolute; right: -14px; top: 50%;
  transform: translateY(-50%) rotate(180deg);
  z-index: 20;
  background: var(--surf); border: 1px solid var(--b1);
  box-shadow: 2px 0 8px rgba(0,0,0,.15);
  width: 26px; height: 26px; border-radius: 50%; font-size: 12px;
}
#sidebar.collapsed #sbToggle:hover { border-color: var(--accent); color: var(--accent); }

.logo {
  display: flex; align-items: center; gap: 9px;
  text-decoration: none; color: inherit;
  flex: 1; min-width: 0; overflow: hidden;
}
.logo-mark {
  width: 42px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--c-blue), var(--c-violet));
  display: grid; place-items: center;
  font-size: 13px; font-weight: 900;
  font-family: 'Montserrat', var(--font); color: #fff;
  letter-spacing: .5px;
  box-shadow: 0 0 18px color-mix(in srgb, var(--c-blue) 35%, transparent);
  transition: transform var(--t), box-shadow var(--t);
  flex-shrink: 0; white-space: nowrap; text-transform: uppercase;
}
.logo:hover .logo-mark {
  transform: rotate(-6deg) scale(1.07);
  box-shadow: 0 0 28px color-mix(in srgb, var(--c-violet) 42%, transparent);
}
.logo-text { min-width: 0; }
.logo-name { font-size: 14px; font-weight: 700; letter-spacing: -.3px; white-space: nowrap; }
.logo-sub {
  font-size: 9px; color: var(--text3); font-family: var(--mono);
  letter-spacing: .08em; white-space: nowrap; text-transform: uppercase; opacity: .7;
}

/* ── Icon button ── */
.ib {
  width: 30px; height: 30px; border-radius: 8px;
  border: 1px solid var(--b1); background: var(--surf2);
  color: var(--text2); cursor: pointer;
  display: grid; place-items: center;
  font-size: 13px; flex-shrink: 0;
  transition: all var(--t);
}
.ib:hover { border-color: var(--accent); color: var(--accent); background: var(--surf3); }

#sbToggle { flex-shrink: 0; font-size: 15px; transition: all var(--t), transform var(--t-slow) var(--ease-out); }

/* ── SB SECTIONS ── */
.sb-section {
  padding: 10px 10px 8px;
  border-bottom: 1px solid var(--b0);
  flex-shrink: 0; overflow: hidden;
  transition: opacity var(--t-med), max-height var(--t-slow) var(--ease-out);
  max-height: 400px;
  background: var(--surf); position: relative; z-index: 1;
}
#sidebar.collapsed .sb-section { opacity: 0; max-height: 0; padding: 0; border-bottom: none; pointer-events: none; }

.sec-lbl {
  display: block;
  font-size: 9px; font-family: var(--mono);
  color: var(--text3); text-transform: uppercase;
  letter-spacing: .12em; margin-bottom: 7px; padding: 0 2px;
}

/* ── PROVIDER DROPDOWN ── */
.pvdr-select {
  width: 100%; height: 36px;
  background: var(--surf2); border: 1px solid var(--b1);
  border-radius: 8px; color: var(--text);
  font-family: var(--font); font-size: 12.5px; font-weight: 600;
  padding: 0 10px; cursor: pointer; outline: none;
  transition: border-color var(--t), box-shadow var(--t);
  appearance: auto;
}
.pvdr-select:focus, .pvdr-select:hover { border-color: var(--accent); }
.pvdr-select option, .pvdr-select optgroup { background: var(--surf); color: var(--text); font-size: 12px; }

/* Per-provider accent */
#sidebar[data-pvdr="openai"]    { --pvdr-color: hsl(172,78%,46%); }
#sidebar[data-pvdr="anthropic"] { --pvdr-color: hsl(38,100%,54%); }
#sidebar[data-pvdr="gemini"]    { --pvdr-color: hsl(220,100%,64%); }
#sidebar[data-pvdr="xai"]       { --pvdr-color: hsl(0,0%,82%); }
#sidebar[data-pvdr="perplexity"]{ --pvdr-color: hsl(220,100%,64%); }
#sidebar[data-pvdr="deepseek"]  { --pvdr-color: hsl(88,74%,50%); }
#sidebar[data-pvdr="mistral"]   { --pvdr-color: hsl(260,88%,66%); }
#sidebar[data-pvdr="cohere"]    { --pvdr-color: hsl(38,100%,54%); }
#sidebar[data-pvdr="together"]  { --pvdr-color: hsl(172,78%,46%); }
#sidebar[data-pvdr="fireworks"] { --pvdr-color: hsl(348,94%,62%); }
#sidebar[data-pvdr="midjourney"]{ --pvdr-color: hsl(260,88%,66%); }
#sidebar[data-pvdr="runway"]    { --pvdr-color: hsl(348,94%,62%); }
#sidebar[data-pvdr="suno"]      { --pvdr-color: hsl(38,100%,54%); }
#sidebar[data-pvdr="heygen"]    { --pvdr-color: hsl(172,78%,46%); }
#sidebar[data-pvdr] .pvdr-select {
  border-color: color-mix(in srgb, var(--pvdr-color) 40%, transparent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--pvdr-color) 20%, transparent);
  color: var(--pvdr-color);
}

/* ── API KEY ── */
.key-wrap { display: grid; gap: 4px; }
.key-input {
  height: 34px; width: 100%;
  background: var(--surf2); border: 1px solid var(--b1);
  border-radius: 8px; color: var(--text);
  font-family: var(--mono); font-size: 11.5px;
  padding: 0 10px; outline: none;
  transition: border-color var(--t), background var(--t);
}
.key-input:focus { border-color: var(--accent); background: var(--surf3); }
.key-st { font-size: 10px; font-family: var(--mono); min-height: 13px; }
.key-st.ok  { color: var(--a3); }
.key-st.err { color: var(--danger); }

/* ══════════════════════════════════════════════════
   CAPABILITIES NAV
══════════════════════════════════════════════════ */
.sb-nav {
  flex: 1; overflow-y: auto; overflow-x: visible;
  padding: 8px 8px 10px;
  display: flex; flex-direction: column; gap: 2px;
  scrollbar-width: thin; scrollbar-color: var(--b1) transparent;
  min-height: 0;
  background: var(--surf); position: relative; z-index: 1;
}
#sidebar.collapsed .sb-nav { padding: 8px 0; align-items: center; overflow-x: visible; overflow-y: visible; }

.nav-lbl {
  font-size: 9px; font-family: var(--mono);
  color: var(--text3); text-transform: uppercase;
  letter-spacing: .12em; padding: 4px 4px 5px;
  display: block;
  transition: opacity var(--t-med);
}
#sidebar.collapsed .nav-lbl { opacity: 0; height: 0; padding: 0; overflow: hidden; }

/* ── NAV ITEM ── */
.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 9px; border-radius: 9px;
  cursor: pointer; border: 1px solid transparent;
  background: none; width: 100%; text-align: left;
  font-family: var(--font); font-size: 13px; font-weight: 600;
  color: var(--text2);
  position: relative; overflow: hidden;
  transition: all var(--t);
  white-space: nowrap;
}
.nav-item::after {
  content: '';
  position: absolute; left: 0; top: 20%; bottom: 20%;
  width: 2.5px; border-radius: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform var(--t-med) var(--ease-spring);
}
.nav-item:hover { background: var(--surf2); color: var(--text); border-color: var(--b0); }
.nav-item:hover::after { transform: scaleY(.6); }
.nav-item.active {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-color: color-mix(in srgb, var(--accent) 20%, transparent);
  color: var(--accent);
}
.nav-item.active::after { transform: scaleY(1); }
.nav-item.locked { opacity: .38; cursor: not-allowed; pointer-events: none; }
.nav-item.locked .nav-badge {
  font-size: 8.5px;
  background: color-mix(in srgb, var(--warn) 10%, transparent);
  border-color: color-mix(in srgb, var(--warn) 22%, transparent);
  color: var(--warn);
}

.nav-ico { font-size: 15px; width: 20px; text-align: center; flex-shrink: 0; line-height: 1; }
.nav-txt { flex: 1; overflow: hidden; }
.nav-badge {
  flex-shrink: 0;
  font-size: 9px; font-family: var(--mono);
  background: var(--surf3); border: 1px solid var(--b1);
  border-radius: 5px; padding: 1px 5px; color: var(--text3);
  transition: all var(--t);
}
.nav-item.active .nav-badge {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border-color: color-mix(in srgb, var(--accent) 28%, transparent);
  color: var(--accent);
}

/* ── Collapsed: icon-only + tooltip ── */
#sidebar.collapsed .nav-item {
  width: 44px; height: 44px; padding: 0;
  justify-content: center; border-radius: 10px;
  position: relative; overflow: visible;
}
#sidebar.collapsed .nav-item::after { display: none; }
#sidebar.collapsed .nav-txt,
#sidebar.collapsed .nav-badge { display: none; }
#sidebar.collapsed .nav-ico { width: auto; font-size: 18px; }
#sidebar.collapsed .nav-item[data-label]::before {
  content: attr(data-label);
  position: fixed;
  left: calc(var(--sb-mini) + 10px);
  transform: translateY(-50%) translateX(-6px);
  background: var(--surf3); border: 1px solid var(--b2);
  border-radius: 8px; padding: 5px 11px;
  font-size: 12px; font-family: var(--font); font-weight: 600;
  color: var(--text); white-space: nowrap;
  box-shadow: 0 4px 20px rgba(0,0,0,.35);
  opacity: 0; pointer-events: none;
  transition: opacity var(--t), transform var(--t);
  z-index: 9999;
}
#sidebar.collapsed .nav-item[data-label]:hover::before {
  opacity: 1; transform: translateY(-50%) translateX(0);
}
#sidebar.collapsed .nav-item.locked { opacity: .3; }

/* ── SB PARAMS ── */
.sb-params {
  flex-shrink: 0; overflow: hidden;
  transition: opacity var(--t-med), max-height var(--t-slow) var(--ease-out);
  max-height: 500px;
  background: var(--surf); position: relative; z-index: 1;
}
#sidebar.collapsed .sb-params { opacity: 0; max-height: 0; pointer-events: none; }

.param-area {
  padding: 9px 10px 10px;
  border-top: 1px solid var(--b0);
  display: grid; gap: 8px;
}
.param-area h4 {
  font-size: 9px; font-family: var(--mono);
  color: var(--text3); text-transform: uppercase; letter-spacing: .12em;
}
.field { display: grid; gap: 3px; }
.field label { font-size: 10.5px; color: var(--text2); font-family: var(--mono); }
.field select, .field input[type=text], .field input[type=number] {
  background: var(--surf2); border: 1px solid var(--b1);
  border-radius: 7px; color: var(--text);
  font-family: var(--font); font-size: 13px;
  padding: 7px 9px; outline: none; width: 100%;
  transition: border-color var(--t);
}
.field select:focus, .field input:focus { border-color: var(--accent); }
.field select option { background: var(--surf); }
.range-row { display: flex; align-items: center; gap: 8px; }
.range-row input[type=range] { flex: 1; accent-color: var(--accent); height: 4px; cursor: pointer; padding: 0; }
.range-val { font-size: 11px; font-family: var(--mono); color: var(--accent); min-width: 32px; text-align: right; }

/* ── SB FOOTER ── */
.sb-foot {
  padding: 8px 10px;
  border-top: 1px solid var(--b0);
  flex-shrink: 0; overflow: hidden;
  transition: opacity var(--t-med), max-height var(--t-slow) var(--ease-out);
  max-height: 80px;
  background: var(--surf); position: relative; z-index: 1;
}
#sidebar.collapsed .sb-foot { opacity: 0; max-height: 0; padding: 0; pointer-events: none; }

/* ══════════════════════════════════════════════════
   MAIN AREA
══════════════════════════════════════════════════ */
#main {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column;
  overflow: hidden;
  background: var(--bg);
  transition: background var(--t-med);
}

/* ══════════════════════════════════════════════════
   TOPBAR
══════════════════════════════════════════════════ */
#topbar {
  height: 52px;
  display: flex; align-items: center;
  padding: 0 14px; gap: 8px;
  flex-shrink: 0;
  background: var(--surf);
  border-bottom: 1px solid var(--b0);
  position: relative;
  transition: background var(--t-med), border-color var(--t-med);
}
#scrollBar {
  position: absolute; bottom: 0; left: 0;
  height: 2px; width: 0%;
  background: linear-gradient(90deg, var(--c-blue), var(--c-violet), var(--c-teal));
  transition: width .08s linear; pointer-events: none;
}
.mob-btn {
  width: 34px; height: 34px; border-radius: 8px;
  border: 1px solid var(--b1); background: var(--surf2);
  color: var(--text); cursor: pointer;
  display: none; place-items: center; font-size: 17px; flex-shrink: 0;
}
.tb-title { font-size: 15px; font-weight: 700; letter-spacing: -.2px; }
.tb-chip {
  font-size: 10px; font-family: var(--mono);
  color: var(--text3); background: var(--surf2);
  border: 1px solid var(--b1); border-radius: 6px;
  padding: 3px 8px; max-width: 160px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.tb-pvdr {
  font-size: 10px; font-family: var(--mono);
  border-radius: 6px; padding: 3px 8px;
  transition: all var(--t-med);
}
.tb-right { margin-left: auto; display: flex; gap: 6px; align-items: center; }

/* ══════════════════════════════════════════════════
   PANELS
══════════════════════════════════════════════════ */
.panel { display: none; flex: 1; flex-direction: column; overflow: hidden; }
.panel.active { display: flex; }

/* ── CHAT ── */
#messages {
  flex: 1; overflow-y: auto; padding: 18px 16px;
  display: flex; flex-direction: column; gap: 4px;
  scroll-behavior: smooth;
  scrollbar-width: thin; scrollbar-color: var(--b1) transparent;
}
.msg-row { display: flex; gap: 10px; animation: msgIn .2s var(--ease-out) both; }
.msg-row.user { flex-direction: row-reverse; }
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.msg-av {
  width: 28px; height: 28px; border-radius: 8px;
  display: grid; place-items: center; font-size: 11px;
  flex-shrink: 0; margin-top: 4px;
}
.msg-row.user .msg-av { background: var(--surf3); border: 1px solid var(--b1); }
.msg-row.ai   .msg-av { background: linear-gradient(135deg, var(--c-violet), var(--c-blue)); }
.msg-body { max-width: min(700px, 85%); display: flex; flex-direction: column; gap: 3px; }
.msg-meta { font-size: 9.5px; color: var(--text3); font-family: var(--mono); display: flex; gap: 6px; }
.msg-row.user .msg-meta { flex-direction: row-reverse; }
.msg-bubble {
  background: var(--bub-a); border: 1px solid var(--b0);
  border-radius: 3px 12px 12px 12px;
  padding: 10px 13px; word-break: break-word;
  line-height: 1.75; position: relative;
  transition: background var(--t-med), border-color var(--t-med);
}
.msg-row.user .msg-bubble {
  background: var(--bub-u); border-color: var(--b1);
  border-radius: 12px 3px 12px 12px;
}
.bub-copy {
  position: absolute; top: 6px; right: 7px;
  font-size: 9.5px; font-family: var(--mono);
  background: var(--surf2); border: 1px solid var(--b1);
  color: var(--text3); border-radius: 5px; padding: 2px 6px;
  cursor: pointer; opacity: 0; transition: opacity var(--t), color var(--t);
}
.msg-bubble:hover .bub-copy { opacity: 1; }
.bub-copy:hover { color: var(--accent); }

/* Markdown */
.msg-bubble p { margin-bottom: .55em; }
.msg-bubble p:last-child { margin-bottom: 0; }
.msg-bubble h1,.msg-bubble h2,.msg-bubble h3 { font-weight: 700; margin: .7em 0 .3em; }
.msg-bubble h1 { font-size: 1.2em; } .msg-bubble h2 { font-size: 1.08em; }
.msg-bubble ul,.msg-bubble ol { padding-left: 1.4em; margin-bottom: .55em; }
.msg-bubble li { margin-bottom: .18em; }
.msg-bubble code:not(pre code) {
  font-family: var(--mono); font-size: .84em;
  background: color-mix(in srgb, var(--accent) 11%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
  border-radius: 4px; padding: .1em .36em;
  color: color-mix(in srgb, var(--accent) 80%, var(--text));
}
.msg-bubble pre {
  background: var(--code-bg); border: 1px solid var(--b1);
  border-radius: 9px; padding: 11px 12px; overflow-x: auto;
  position: relative; margin: .55em 0;
}
.msg-bubble pre code { font-family: var(--mono); font-size: 12.5px; background: none; border: none; padding: 0; }
.msg-bubble a { color: var(--accent); text-decoration: underline; }
.msg-bubble blockquote { border-left: 3px solid var(--a2); padding-left: 11px; color: var(--text2); margin: .5em 0; }
.msg-bubble table { border-collapse: collapse; width: 100%; margin: .55em 0; font-size: 13px; }
.msg-bubble th,.msg-bubble td { border: 1px solid var(--b1); padding: 5px 9px; text-align: left; }
.msg-bubble th { background: var(--surf2); font-weight: 700; }
.msg-bubble audio,.msg-bubble video { max-width: 100%; border-radius: 8px; display: block; margin: 5px 0; }
.code-copy {
  position: absolute; top: 6px; right: 7px;
  font-size: 10px; font-family: var(--mono);
  background: var(--surf3); border: 1px solid var(--b1);
  color: var(--text3); border-radius: 5px; padding: 2px 7px; cursor: pointer;
  transition: all var(--t);
}
.code-copy:hover { color: var(--text); border-color: var(--accent); }
.dots { display: flex; gap: 5px; align-items: center; padding: 2px 0; }
.dots span { width: 5px; height: 5px; border-radius: 50%; background: var(--text3); animation: blink 1.1s ease infinite; }
.dots span:nth-child(2) { animation-delay: .18s; }
.dots span:nth-child(3) { animation-delay: .36s; }
@keyframes blink { 0%,80%,100% { opacity:.18; transform:scale(.7); } 40% { opacity:1; transform:scale(1); } }

/* ── Welcome ── */
#welcome {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 13px; padding: 36px; text-align: center;
}
#welcome .wlc-logo {
  width: 80px; height: 64px; border-radius: 18px;
  background: linear-gradient(135deg, var(--c-blue), var(--c-violet));
  display: grid; place-items: center;
  font-size: 22px; font-weight: 900; font-family: 'Montserrat', var(--font);
  color: #fff; margin-bottom: 4px; letter-spacing: .5px; text-transform: uppercase;
  box-shadow: 0 8px 32px color-mix(in srgb, var(--c-blue) 35%, transparent),
              0 0 0 1px color-mix(in srgb, var(--c-violet) 20%, transparent);
  animation: logoPulse 4s ease infinite;
}
@keyframes logoPulse {
  0%,100% { box-shadow: 0 8px 32px color-mix(in srgb, var(--c-blue) 35%, transparent); }
  50%     { box-shadow: 0 8px 42px color-mix(in srgb, var(--c-violet) 45%, transparent); }
}
#welcome h2 {
  font-size: clamp(22px, 4vw, 40px);
  font-weight: 700; letter-spacing: -1.2px; line-height: 1.1;
  background: linear-gradient(120deg, var(--c-blue) 0%, var(--c-violet) 50%, var(--c-teal) 100%);
  background-size: 200%;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  animation: gradFlow 7s ease infinite alternate;
}
@keyframes gradFlow { 0% { background-position: 0% 50%; } 100% { background-position: 100% 50%; } }
@media (prefers-reduced-motion: reduce) {
  #welcome .wlc-logo { animation: none; }
  #welcome h2 { animation: none; background-position: 0% 50%; }
}
#welcome p { font-size: 13.5px; color: var(--text2); max-width: 320px; line-height: 1.8; }
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; max-width: 460px; }
.chip {
  font-size: 11px; font-family: var(--mono);
  padding: 5px 11px; border-radius: 999px;
  background: var(--surf2); border: 1px solid var(--b1);
  cursor: pointer; color: var(--text2); transition: all var(--t);
}
.chip:hover { border-color: var(--accent); color: var(--accent); background: color-mix(in srgb,var(--accent) 8%,transparent); }

/* ── Composer ── */
#comp-wrap {
  padding: 8px 16px;
  padding-bottom: max(14px, env(safe-area-inset-bottom, 14px));
  flex-shrink: 0;
  background: linear-gradient(180deg, transparent, var(--bg) 28%);
}
#comp {
  background: var(--surf); border: 1px solid var(--b1);
  border-radius: 14px; padding: 9px 10px;
  max-width: 820px; margin: 0 auto;
  box-shadow: 0 4px 28px rgba(0,0,0,.2);
  transition: border-color var(--t), background var(--t-med);
}
#comp:focus-within { border-color: var(--accent); }
.comp-top { display: flex; gap: 8px; align-items: flex-end; }
#input {
  flex: 1; background: none; border: none; color: var(--text);
  font-family: var(--font); font-size: 14px; line-height: 1.6;
  resize: none; outline: none; max-height: 180px; overflow-y: auto; padding: 2px 0;
}
#input::placeholder { color: var(--text3); }
.send-btn {
  width: 34px; height: 34px; border-radius: 9px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--c-blue), var(--c-violet));
  border: none; color: #fff; cursor: pointer;
  display: grid; place-items: center;
  transition: transform var(--t), opacity var(--t), box-shadow var(--t);
}
.send-btn:hover { transform: scale(1.08); box-shadow: 0 0 16px color-mix(in srgb, var(--c-blue) 42%, transparent); }
.send-btn:active { transform: scale(.92); }
.send-btn:disabled { opacity: .32; cursor: default; transform: none; box-shadow: none; }
.comp-bot {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  margin-top: 6px; padding-top: 6px; border-top: 1px solid var(--b0);
}
.comp-act {
  display: flex; align-items: center; gap: 4px;
  font-size: 11px; font-family: var(--font); color: var(--text3);
  background: none; border: 1px solid var(--b0); border-radius: 6px;
  padding: 3px 8px; cursor: pointer; transition: all var(--t);
}
.comp-act:hover { color: var(--text); border-color: var(--b1); background: var(--surf2); }
.comp-hint { font-size: 10px; font-family: var(--mono); color: var(--text3); margin-left: auto; }
.att-prev { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.at-th { position: relative; width: 48px; height: 48px; border-radius: 7px; overflow: hidden; border: 1px solid var(--b1); flex-shrink: 0; }
.at-th img { width: 100%; height: 100%; object-fit: cover; display: block; }
.at-rm { position: absolute; top: 2px; right: 2px; width: 15px; height: 15px; border-radius: 50%; background: rgba(0,0,0,.75); border: none; color: #fff; font-size: 8px; cursor: pointer; display: grid; place-items: center; }

/* ══════════════════════════════════════════════════
   TOOL PANELS
══════════════════════════════════════════════════ */
.p-scroll { flex: 1; overflow-y: auto; padding: 20px 18px; scrollbar-width: thin; scrollbar-color: var(--b1) transparent; }
.p-wrap { max-width: 820px; margin: 0 auto; display: grid; gap: 16px; }
.panel-hdr { display: flex; align-items: center; gap: 10px; padding-bottom: 2px; }
.panel-hdr h2 { font-size: 17px; font-weight: 700; letter-spacing: -.25px; }
.lock-badge {
  font-size: 9px; font-family: var(--mono); padding: 2px 7px; border-radius: 5px;
  background: color-mix(in srgb, var(--warn) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--warn) 22%, transparent);
  color: var(--warn);
}
.pvdr-lock-banner {
  display: none; align-items: flex-start; gap: 10px;
  padding: 11px 14px; border-radius: 10px;
  background: color-mix(in srgb, var(--warn) 7%, transparent);
  border: 1px solid color-mix(in srgb, var(--warn) 20%, transparent);
  font-size: 13px; color: var(--warn); line-height: 1.5;
}
.pvdr-lock-banner.visible { display: flex; }
.pvdr-lock-banner strong { font-weight: 700; }
.tool-card {
  background: var(--surf); border: 1px solid var(--b0);
  border-radius: 13px; padding: 16px; display: grid; gap: 11px;
  transition: background var(--t-med), border-color var(--t-med);
}
.i2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.fi {
  background: var(--surf2); border: 1px solid var(--b1);
  border-radius: 8px; color: var(--text);
  font-family: var(--font); font-size: 13.5px;
  padding: 9px 11px; outline: none; width: 100%;
  transition: border-color var(--t);
}
.fi:focus { border-color: var(--accent); }
textarea.fi { resize: vertical; min-height: 80px; }
select.fi { height: 40px; cursor: pointer; }
select.fi option { background: var(--surf); }
input[type=file].fi { font-size: 12.5px; padding: 7px 11px; cursor: pointer; }

/* ── Buttons ── */
.run-btn {
  display: inline-flex; align-items: center; gap: 7px;
  background: linear-gradient(135deg, var(--accent), var(--a2));
  color: #fff; border: none; border-radius: 9px;
  padding: 9px 18px; font-family: var(--font); font-size: 14px; font-weight: 600;
  cursor: pointer; transition: opacity var(--t), transform var(--t), box-shadow var(--t);
}
.run-btn:hover { opacity: .9; transform: translateY(-1px); box-shadow: 0 5px 18px color-mix(in srgb, var(--accent) 28%, transparent); }
.run-btn:active { transform: translateY(0); }
.run-btn:disabled { opacity: .32; cursor: default; transform: none; box-shadow: none; }
.btn {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--surf2); border: 1px solid var(--b1);
  color: var(--text); border-radius: 8px;
  padding: 6px 11px; font-family: var(--font); font-size: 12px; font-weight: 600;
  cursor: pointer; transition: all var(--t); user-select: none;
}
.btn:hover { border-color: var(--accent); color: var(--accent); background: color-mix(in srgb,var(--accent) 7%,transparent); }
.btn.dng:hover { border-color: var(--danger); color: var(--danger); background: color-mix(in srgb,var(--danger) 7%,transparent); }
.btn:disabled { opacity: .32; cursor: default; }
.btn-row { display: flex; gap: 7px; flex-wrap: wrap; align-items: center; }

/* Results */
.out-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px,1fr)); gap: 10px; }
.out-img { border-radius: 11px; overflow: hidden; border: 1px solid var(--b1); background: var(--surf2); }
.out-img img { width: 100%; display: block; }
.out-img-foot { padding: 7px 9px; display: flex; gap: 5px; flex-wrap: wrap; }
.res-card { background: var(--surf); border: 1px solid var(--b1); border-radius: 11px; padding: 13px; display: grid; gap: 9px; }
.res-card audio { width: 100%; border-radius: 7px; }
.res-card pre { background: var(--code-bg); border: 1px solid var(--b1); border-radius: 8px; padding: 10px; overflow-x: auto; font-family: var(--mono); font-size: 12px; white-space: pre-wrap; word-break: break-all; max-height: 320px; overflow-y: auto; }
.stats-row { display: flex; gap: 14px; flex-wrap: wrap; }
.stat { display: grid; gap: 1px; }
.stat-l { font-size: 9px; font-family: var(--mono); color: var(--text3); text-transform: uppercase; letter-spacing: .06em; }
.stat-v { font-size: 14px; font-weight: 700; }
.embed-vec { font-family: var(--mono); font-size: 11px; color: var(--a3); background: var(--surf2); border: 1px solid var(--b1); border-radius: 8px; padding: 9px; max-height: 110px; overflow-y: auto; word-break: break-all; }

/* Files */
.file-list { display: grid; gap: 6px; }
.file-item { display: flex; align-items: center; gap: 9px; background: var(--surf2); border: 1px solid var(--b0); border-radius: 10px; padding: 8px 11px; transition: border-color var(--t); }
.file-item:hover { border-color: var(--b1); }
.file-ico { font-size: 17px; flex-shrink: 0; }
.file-info { flex: 1; min-width: 0; }
.file-nm { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-mt { font-size: 10px; font-family: var(--mono); color: var(--text3); }
.file-acts { display: flex; gap: 5px; flex-shrink: 0; flex-wrap: wrap; }
.unavail-banner { display: flex; align-items: flex-start; gap: 9px; padding: 10px 12px; border-radius: 9px; background: color-mix(in srgb,var(--warn) 8%,transparent); border: 1px solid color-mix(in srgb,var(--warn) 20%,transparent); font-size: 12.5px; color: var(--warn); line-height: 1.5; }

/* ══════════════════════════════════════════════════
   MODALS & OVERLAYS
══════════════════════════════════════════════════ */
.overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.65); z-index: 600; place-items: center; backdrop-filter: blur(8px); padding: 16px; }
.overlay.open { display: grid; }
.modal { background: var(--surf); border: 1px solid var(--b1); border-radius: 18px; padding: 24px; width: min(500px,100%); box-shadow: 0 24px 60px rgba(0,0,0,.45); animation: popIn .18s var(--ease-out); max-height: 92dvh; overflow-y: auto; }
@keyframes popIn { from { opacity:0; transform:scale(.95) translateY(7px); } to { opacity:1; transform:none; } }
.modal h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; letter-spacing: -.2px; }
.modal-acts { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; flex-wrap: wrap; }
.tos-scroll { font-size: 12.5px; color: var(--text2); line-height: 1.8; max-height: 50dvh; overflow-y: auto; border: 1px solid var(--b1); border-radius: 10px; padding: 12px; background: var(--surf2); scrollbar-width: thin; }
.tos-scroll h4 { color: var(--text); font-size: 12.5px; margin: 10px 0 4px; font-weight: 700; }
.tos-scroll p { margin-bottom: 8px; }
.tos-check { display: flex; align-items: flex-start; gap: 8px; font-size: 12.5px; cursor: pointer; margin-top: 11px; }
.tos-check input[type=checkbox] { margin-top: 3px; accent-color: var(--accent); width: 14px; height: 14px; cursor: pointer; flex-shrink: 0; }
.toast { position: fixed; bottom: 18px; right: 18px; background: var(--surf); border: 1px solid var(--b1); border-radius: 10px; padding: 10px 15px; font-size: 12.5px; box-shadow: 0 6px 24px rgba(0,0,0,.3); z-index: 999; animation: slideUp .18s var(--ease-out); max-width: 280px; pointer-events: none; }
@keyframes slideUp { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:none; } }
.toast.ok   { border-left: 3px solid var(--a3); }
.toast.err  { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--accent); }
.spin { width: 13px; height: 13px; border: 2px solid rgba(255,255,255,.2); border-top-color: #fff; border-radius: 50%; animation: rot .5s linear infinite; display: inline-block; flex-shrink: 0; }
@keyframes rot { to { transform:rotate(360deg); } }

::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--b1); border-radius: 99px; }

/* ══════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════ */
@media (max-width: 820px) {
  #sidebar {
    position: fixed; inset: 0 auto 0 0; z-index: 300;
    width: min(288px, 88vw) !important;
    min-width: 0 !important; max-width: none !important;
    transform: translateX(-100%);
    overflow: hidden !important;
    transition: transform var(--t-slow) var(--ease-out), background var(--t-med);
  }
  #sidebar.open { transform: translateX(0); box-shadow: 0 0 50px rgba(0,0,0,.5); }
  #sidebar.collapsed { width: min(288px, 88vw) !important; min-width: 0 !important; overflow: hidden !important; }
  #sidebar::after { display: none; }
  #sidebar .sb-text,
  #sidebar .sb-section,
  #sidebar .sb-params,
  #sidebar .sb-foot,
  #sidebar .nav-lbl,
  #sidebar .nav-txt,
  #sidebar .nav-badge {
    opacity: 1 !important; max-height: 600px !important; max-width: 100% !important;
    padding: unset !important; overflow: visible !important;
    pointer-events: auto !important; height: auto !important; display: block !important;
  }
  #sidebar .sb-section { padding: 10px 10px 8px !important; border-bottom: 1px solid var(--b0) !important; }
  #sidebar .pvdr-select { display: block !important; width: 100% !important; opacity: 1 !important; pointer-events: auto !important; }
  #sidebar .sb-params { display: block !important; }
  #sidebar .sb-nav { display: flex !important; flex-direction: column !important; }
  #sidebar .sb-head { justify-content: flex-start !important; padding: 14px 12px 13px !important; }
  #sidebar .logo { gap: 9px !important; }
  #sidebar .logo-mark { margin: 0 !important; }
  #sidebar .sb-nav { padding: 8px 8px 10px !important; align-items: stretch !important; overflow-y: auto !important; overflow-x: hidden !important; }
  #sidebar .nav-item { width: 100% !important; height: auto !important; padding: 8px 9px !important; justify-content: flex-start !important; overflow: hidden !important; }
  #sidebar .nav-item::before { display: none !important; }
  #sidebar .nav-ico { width: 20px !important; font-size: 15px !important; }
  #sidebar #sbToggle { display: none !important; }
  #sb-backdrop { display: none; position: fixed; inset: 0; z-index: 299; background: rgba(0,0,0,.5); backdrop-filter: blur(4px); }
  #sb-backdrop.open { display: block; }
  .mob-btn { display: grid !important; }
}

@media (max-width: 580px) {
  #topbar { padding: 0 10px; gap: 6px; }
  .tb-title { font-size: 13px; }
  .tb-chip { display: none; }
  #messages { padding: 12px 10px; }
  #comp-wrap { padding: 6px 10px; padding-bottom: max(12px, env(safe-area-inset-bottom, 12px)); }
  #input { font-size: 16px; }
  .comp-hint { display: none; }
  .msg-body { max-width: 92%; }
  .p-scroll { padding: 14px 12px; }
  .tool-card { padding: 13px; }
  .i2 { grid-template-columns: 1fr; }
  .out-grid { grid-template-columns: 1fr; }
  .chip { font-size: 10.5px; padding: 5px 10px; }
  .modal { padding: 18px 14px; }
  .tos-scroll { max-height: 42dvh; }
  #welcome { padding: 24px 18px; }
  #welcome .wlc-logo { width: 52px; height: 52px; font-size: 18px; }
}

@media (max-width: 360px) {
  .tb-pvdr { display: none; }
}