@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============================================================
   CSS VARIABLES
   ============================================================ */
:root {
  --bg: #08080e;
  --s1: #0f0f1a;
  --s2: #161625;
  --s3: #1e1e30;
  --s4: #262638;
  --b1: #2c2c44;
  --b2: #3a3a58;
  --b3: #50508a;
  --acc: #7c6aff;
  --acc2: #b8adff;
  --acc3: #4a38d4;
  --green: #1ddb7e;
  --orange: #ff7c35;
  --red: #ff4757;
  --cyan: #00d4ff;
  --yellow: #ffd700;
  --pink: #ff6bb5;
  --text: #ededff;
  --t2: #9898c0;
  --t3: #5a5a80;
  --node-w: 210px;
  --easy-node-w: 180px;
  --sidebar-w: 220px;
  --props-w: 285px;
  --topbar-h: 54px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Syne', sans-serif;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  opacity: .02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* ============================================================
   SCROLLBARS
   ============================================================ */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--b2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--acc); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  padding: 6px 13px;
  border-radius: 7px;
  border: none;
  cursor: pointer;
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  font-weight: 600;
  transition: .15s;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
  letter-spacing: .2px;
  text-decoration: none;
}
.btn-ghost { background: transparent; color: var(--t2); border: 1px solid var(--b1); }
.btn-ghost:hover { background: var(--s2); color: var(--text); border-color: var(--b2); }
.btn-acc { background: var(--acc); color: #fff; }
.btn-acc:hover { background: var(--acc2); color: #0a0a15; }
.btn-run {
  background: linear-gradient(135deg, var(--green), #0f9e57);
  color: #fff;
  padding: 7px 18px;
  font-size: 12px;
  font-weight: 700;
}
.btn-run:hover { filter: brightness(1.1); }
.btn-run:disabled { opacity: .5; cursor: not-allowed; filter: none; }
.btn-share { background: linear-gradient(135deg, var(--cyan), var(--acc)); color: #fff; }
.btn-share:hover { filter: brightness(1.1); }

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar {
  height: var(--topbar-h);
  background: var(--s1);
  border-bottom: 1px solid var(--b1);
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 8px;
  z-index: 100;
  flex-shrink: 0;
  position: relative;
}
.topbar::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--acc3), var(--acc), var(--cyan), transparent);
  opacity: .4;
}
.logo {
  font-weight: 800;
  font-size: 15px;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--acc2), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  text-decoration: none;
}
.logo-mark {
  width: 26px; height: 26px;
  background: linear-gradient(135deg, var(--acc), var(--cyan));
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  -webkit-text-fill-color: initial;
  flex-shrink: 0;
}
.tsep { flex: 1; }
.flow-name {
  background: var(--s2);
  border: 1px solid var(--b1);
  color: var(--text);
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  font-weight: 600;
  padding: 5px 9px;
  border-radius: 7px;
  width: 140px;
  outline: none;
  transition: .2s;
}
.flow-name:focus { border-color: var(--acc); }

/* Mode toggle */
.mode-toggle {
  display: flex;
  background: var(--s2);
  border: 1px solid var(--b1);
  border-radius: 8px;
  padding: 3px;
  gap: 2px;
}
.mode-btn {
  padding: 4px 10px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  font-weight: 700;
  transition: .2s;
  color: var(--t2);
  background: transparent;
}
.mode-btn.active {
  background: var(--acc);
  color: #fff;
  box-shadow: 0 2px 8px rgba(124,106,255,.4);
}

/* ============================================================
   LAYOUT
   ============================================================ */
.main { display: flex; flex: 1; overflow: hidden; }

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
  width: var(--sidebar-w);
  background: var(--s1);
  border-right: 1px solid var(--b1);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--b2) transparent;
  position: relative;
  z-index: 10;
}
.sb-sec { padding: 10px; }
.sb-sec + .sb-sec { border-top: 1px solid var(--b1); }
.sb-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--t3);
  text-transform: uppercase;
  margin-bottom: 7px;
  padding: 2px 2px 0;
  display: flex;
  align-items: center;
}

/* Pro mode node cards */
.ncard {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 9px;
  border-radius: 9px;
  cursor: grab;
  border: 1px solid var(--b1);
  background: var(--s2);
  margin-bottom: 5px;
  transition: .15s;
  user-select: none;
  position: relative;
  overflow: hidden;
}
.ncard::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  border-radius: 9px 0 0 9px;
  background: var(--nc, var(--acc));
  opacity: 0;
  transition: .15s;
}
.ncard:hover::before { opacity: 1; }
.ncard:hover { background: var(--s3); border-color: var(--b2); transform: translateX(3px); }
.ncard:active { cursor: grabbing; }
.nic { width: 28px; height: 28px; border-radius: 7px; display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; }
.nci { flex: 1; min-width: 0; }
.ncn { font-size: 11px; font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ncd { font-size: 9px; color: var(--t2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 1px; }

/* Easy mode template cards */
.easy-sidebar { padding: 10px; }
.easy-section-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.tpl-card {
  background: var(--s2);
  border: 1.5px solid var(--b1);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: .2s;
  position: relative;
  overflow: hidden;
}
.tpl-card:hover { border-color: var(--acc); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,0,0,.3); }
.tpl-icon { font-size: 24px; margin-bottom: 6px; }
.tpl-name { font-size: 12px; font-weight: 700; color: var(--text); margin-bottom: 3px; }
.tpl-desc { font-size: 10px; color: var(--t2); line-height: 1.5; }
.tpl-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: rgba(124,106,255,.12);
  border: 1px solid rgba(124,106,255,.25);
  color: var(--acc2);
  font-size: 8px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  margin-top: 6px;
  letter-spacing: .3px;
}

/* Saved flows */
.saved-flow-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: 7px;
  background: var(--s2);
  border: 1px solid var(--b1);
  margin-bottom: 4px;
  cursor: pointer;
  transition: .15s;
}
.saved-flow-item:hover { background: var(--s3); border-color: var(--b2); }
.saved-flow-name { font-size: 11px; font-weight: 500; flex: 1; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.saved-flow-del { font-size: 11px; color: var(--t3); background: none; border: none; cursor: pointer; padding: 2px 4px; border-radius: 3px; }
.saved-flow-del:hover { color: var(--red); background: rgba(255,71,87,.1); }

/* ============================================================
   CANVAS
   ============================================================ */
.cw { flex: 1; position: relative; overflow: hidden; background: var(--bg); }
.cbg {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(80,80,138,.25) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.cbg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 50%, transparent 40%, rgba(8,8,14,.7) 100%);
}
#canvas { position: absolute; width: 5000px; height: 4000px; transform-origin: 0 0; }
#svgl { position: absolute; width: 5000px; height: 4000px; pointer-events: none; overflow: visible; }
.cpath { fill: none; stroke: url(#grad-conn); stroke-width: 2; opacity: .7; pointer-events: stroke; cursor: pointer; transition: .15s; }
.cpath:hover { opacity: 1; stroke-width: 3; }
.cdraft { fill: none; stroke: var(--acc2); stroke-width: 1.5; stroke-dasharray: 5 4; opacity: .6; pointer-events: none; }

/* Empty state */
.empty { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); text-align: center; pointer-events: none; }
.empty-t { font-size: 20px; font-weight: 800; color: var(--b2); letter-spacing: -1px; }
.empty-d { font-size: 12px; color: var(--b1); margin-top: 6px; line-height: 1.6; }

/* Zoom controls */
.zc { position: absolute; bottom: 16px; right: 16px; display: flex; gap: 4px; z-index: 50; }
.zb { width: 30px; height: 30px; background: var(--s1); border: 1px solid var(--b1); color: var(--text); border-radius: 6px; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 13px; transition: .15s; }
.zb:hover { background: var(--s2); border-color: var(--b2); }
.zlbl { height: 30px; background: var(--s1); border: 1px solid var(--b1); color: var(--t2); border-radius: 6px; display: flex; align-items: center; padding: 0 9px; font-family: 'JetBrains Mono', monospace; font-size: 10px; }

/* ============================================================
   PRO MODE NODES
   ============================================================ */
.node {
  position: absolute;
  width: var(--node-w);
  background: var(--s1);
  border: 1.5px solid var(--b1);
  border-radius: 12px;
  cursor: move;
  user-select: none;
  transition: box-shadow .15s, border-color .15s;
  z-index: 10;
}
.node:hover { border-color: var(--b2); box-shadow: 0 4px 24px rgba(0,0,0,.4); }
.node.selected { border-color: var(--acc); box-shadow: 0 0 0 3px rgba(124,106,255,.18), 0 4px 24px rgba(0,0,0,.5); z-index: 20; }
.node.running { border-color: var(--yellow); animation: pulse-node 1.2s ease-in-out infinite; }
.node.done { border-color: var(--green); box-shadow: 0 0 12px rgba(29,219,126,.2); }
.node.err { border-color: var(--red); }
@keyframes pulse-node { 0%,100% { box-shadow: 0 0 8px rgba(255,215,0,.2); } 50% { box-shadow: 0 0 24px rgba(255,215,0,.5); } }

.nh { display: flex; align-items: center; gap: 7px; padding: 9px 10px; border-radius: 11px 11px 0 0; border-bottom: 1px solid var(--b1); }
.nhi { width: 24px; height: 24px; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 13px; flex-shrink: 0; }
.ntitle { font-size: 11px; font-weight: 700; color: var(--text); flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ndel { width: 18px; height: 18px; border-radius: 4px; background: transparent; border: none; color: var(--t2); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 10px; opacity: 0; transition: .15s; }
.node:hover .ndel { opacity: 1; }
.ndel:hover { background: var(--red); color: #fff; }
.nb { padding: 8px 10px; }
.nf { margin-bottom: 5px; }
.nf:last-child { margin-bottom: 0; }
.nfl { font-size: 8px; font-weight: 700; letter-spacing: .8px; color: var(--t3); text-transform: uppercase; margin-bottom: 2px; }
.nfv { font-size: 10px; color: var(--t2); background: var(--s2); border-radius: 5px; padding: 3px 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; border: 1px solid var(--b1); }
.nfv.mono { font-family: 'JetBrains Mono', monospace; font-size: 9px; color: var(--cyan); }
.nst { font-size: 9px; padding: 2px 6px; border-radius: 4px; margin-top: 4px; display: none; font-weight: 600; }
.nst.show { display: block; }
.nst.running { background: rgba(255,215,0,.1); color: var(--yellow); }
.nst.done { background: rgba(29,219,126,.1); color: var(--green); }
.nst.err { background: rgba(255,71,87,.1); color: var(--red); }

/* ============================================================
   EASY MODE NODES
   ============================================================ */
.easy-node {
  position: absolute;
  width: var(--easy-node-w);
  background: var(--s1);
  border: 2px solid var(--b1);
  border-radius: 16px;
  cursor: move;
  user-select: none;
  z-index: 10;
  transition: box-shadow .2s, border-color .2s;
}
.easy-node:hover { border-color: var(--b2); box-shadow: 0 6px 28px rgba(0,0,0,.5); }
.easy-node.selected { border-color: var(--acc); box-shadow: 0 0 0 4px rgba(124,106,255,.2); z-index: 20; }
.easy-node.running { border-color: var(--yellow); animation: pulse-node 1.2s infinite; }
.easy-node.done { border-color: var(--green); }
.easy-node.err { border-color: var(--red); }
.en-body { padding: 14px 14px 12px; text-align: center; }
.en-icon { font-size: 28px; margin-bottom: 6px; }
.en-title { font-size: 12px; font-weight: 700; color: var(--text); margin-bottom: 3px; }
.en-subtitle { font-size: 9px; color: var(--t2); }
.en-preview { font-size: 9px; color: var(--t3); background: var(--s2); border-radius: 6px; padding: 4px 8px; margin-top: 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; border: 1px solid var(--b1); }
.en-status { font-size: 9px; padding: 3px 8px; border-radius: 20px; margin-top: 6px; display: none; font-weight: 700; }
.en-status.show { display: block; }
.en-status.running { background: rgba(255,215,0,.15); color: var(--yellow); }
.en-status.done { background: rgba(29,219,126,.15); color: var(--green); }
.en-status.err { background: rgba(255,71,87,.15); color: var(--red); }
.en-del { position: absolute; top: 6px; right: 8px; background: none; border: none; color: var(--t3); cursor: pointer; font-size: 11px; opacity: 0; transition: .15s; }
.easy-node:hover .en-del { opacity: 1; }
.en-del:hover { color: var(--red); }
.mem-badge { position: absolute; top: -6px; right: 22px; background: var(--acc); color: #fff; font-size: 8px; font-weight: 700; padding: 1px 5px; border-radius: 3px; }

/* ============================================================
   PORTS
   ============================================================ */
.port {
  position: absolute;
  width: 13px; height: 13px;
  border-radius: 50%;
  border: 2px solid var(--b2);
  background: var(--s1);
  cursor: crosshair;
  transition: .15s;
  z-index: 30;
}
.port:hover { background: var(--acc); border-color: var(--acc); transform: scale(1.5); }
.port-in { left: -7px; top: 50%; transform: translateY(-50%); }
.port-in:hover { transform: translateY(-50%) scale(1.5); }
.port-out { right: -7px; top: 50%; transform: translateY(-50%); }
.port-out:hover { transform: translateY(-50%) scale(1.5); }

/* ============================================================
   PROPERTIES PANEL
   ============================================================ */
.pp {
  width: var(--props-w);
  background: var(--s1);
  border-left: 1px solid var(--b1);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  transition: width .2s;
}
.pp.hidden { width: 0; overflow: hidden; border: none; }
.pph { padding: 14px 16px; border-bottom: 1px solid var(--b1); display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.ppht { font-size: 13px; font-weight: 700; color: var(--text); flex: 1; }
.ppc { background: none; border: none; color: var(--t2); cursor: pointer; font-size: 16px; line-height: 1; padding: 2px; }
.ppc:hover { color: var(--text); }
.ppb { padding: 14px 16px; flex: 1; }
.fg { margin-bottom: 12px; }
.fl { display: block; font-size: 10px; font-weight: 700; color: var(--t2); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .5px; }
.fi, .fta, .fsel {
  width: 100%;
  background: var(--s2);
  border: 1px solid var(--b1);
  color: var(--text);
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  padding: 7px 10px;
  border-radius: 7px;
  outline: none;
  transition: .15s;
  resize: none;
}
.fi:focus, .fta:focus, .fsel:focus { border-color: var(--acc); }
.fta { min-height: 80px; font-family: 'JetBrains Mono', monospace; font-size: 10px; line-height: 1.6; }
.fsel option { background: var(--s2); }
.fdiv { border: none; border-top: 1px solid var(--b1); margin: 12px 0; }
.node-help-box { border-radius: 10px; padding: 10px 12px; margin-bottom: 12px; font-size: 11px; color: var(--t2); line-height: 1.6; }
.mem-history { background: var(--s2); border: 1px solid var(--b1); border-radius: 7px; padding: 8px; max-height: 140px; overflow-y: auto; }
.mem-msg { font-size: 9px; font-family: 'JetBrains Mono', monospace; padding: 3px 0; border-bottom: 1px solid var(--b1); color: var(--t2); }
.mem-msg:last-child { border-bottom: none; }
.mem-msg .role { color: var(--acc2); font-weight: 600; margin-right: 4px; }
.mem-clear-btn { font-size: 10px; color: var(--red); background: none; border: none; cursor: pointer; margin-top: 4px; font-family: 'Syne', sans-serif; }

/* ============================================================
   OUTPUT PANEL
   ============================================================ */
.outp {
  position: fixed;
  bottom: 0;
  left: var(--sidebar-w);
  right: var(--props-w);
  background: var(--s1);
  border-top: 1px solid var(--b1);
  z-index: 50;
  transition: transform .25s cubic-bezier(.4,0,.2,1), right .2s;
  transform: translateY(100%);
  max-height: 320px;
  display: flex;
  flex-direction: column;
}
.outp.open { transform: translateY(0); }
.outp.props-hidden { right: 0; }
.outph { display: flex; align-items: center; padding: 8px 14px; border-bottom: 1px solid var(--b1); gap: 8px; flex-shrink: 0; }
.outpt { font-size: 11px; font-weight: 700; color: var(--t2); font-family: 'JetBrains Mono', monospace; flex: 1; }
.outpb { padding: 10px 14px; overflow-y: auto; flex: 1; font-family: 'JetBrains Mono', monospace; font-size: 11px; line-height: 1.7; color: var(--text); }
.ol { padding: 1px 0; display: flex; gap: 8px; }
.olt { color: var(--t3); flex-shrink: 0; font-size: 9px; padding-top: 3px; }
.ol.info .olm { color: var(--text); }
.ol.success .olm { color: var(--green); }
.ol.warn .olm { color: var(--yellow); }
.ol.error .olm { color: var(--red); }
.ol.result .olm { color: var(--cyan); white-space: pre-wrap; word-break: break-word; font-size: 12px; }
.ol.img .olm img { max-width: 100%; border-radius: 6px; margin-top: 4px; max-height: 200px; object-fit: contain; }

/* ============================================================
   MODALS
   ============================================================ */
.mover {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.75);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
  padding: 16px;
}
.mover.open { opacity: 1; pointer-events: auto; }
.modal {
  background: var(--s1);
  border: 1px solid var(--b2);
  border-radius: 14px;
  padding: 24px;
  width: 460px;
  max-width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-lg { width: 560px; }
.mt { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.md { font-size: 12px; color: var(--t2); margin-bottom: 16px; line-height: 1.6; }
.mact { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; flex-wrap: wrap; }
.api-row { display: flex; gap: 8px; margin-bottom: 10px; align-items: center; flex-wrap: wrap; }
.api-label { font-size: 11px; font-weight: 700; color: var(--t2); width: 110px; flex-shrink: 0; }
.api-input { flex: 1; min-width: 120px; background: var(--s2); border: 1px solid var(--b1); color: var(--text); font-family: 'JetBrains Mono', monospace; font-size: 10px; padding: 6px 10px; border-radius: 6px; outline: none; }
.api-input:focus { border-color: var(--acc); }
.api-link { font-size: 9px; color: var(--acc2); text-decoration: none; flex-shrink: 0; }
.api-link:hover { text-decoration: underline; }
.share-url { width: 100%; background: var(--s2); border: 1px solid var(--b1); color: var(--cyan); font-family: 'JetBrains Mono', monospace; font-size: 10px; padding: 8px 10px; border-radius: 7px; outline: none; resize: none; }

/* ============================================================
   TOAST
   ============================================================ */
.tc { position: fixed; top: 62px; right: 16px; z-index: 3000; display: flex; flex-direction: column; gap: 6px; pointer-events: none; }
.toast { background: var(--s2); border: 1px solid var(--b2); border-radius: 9px; padding: 9px 13px; font-size: 11px; color: var(--text); animation: toast-in .2s ease; max-width: 300px; font-weight: 500; pointer-events: auto; }
.toast.s { border-color: var(--green); }
.toast.e { border-color: var(--red); }
.toast.w { border-color: var(--yellow); }
@keyframes toast-in { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ============================================================
   WELCOME SCREEN
   ============================================================ */
.welcome {
  position: fixed;
  inset: 0;
  background: rgba(8,8,14,.97);
  z-index: 1500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.welcome-inner { max-width: 540px; width: 100%; text-align: center; }
.welcome-logo { width: 60px; height: 60px; background: linear-gradient(135deg, var(--acc), var(--cyan)); border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 30px; margin: 0 auto 18px; }
.welcome-title { font-size: 32px; font-weight: 800; letter-spacing: -2px; margin-bottom: 8px; background: linear-gradient(135deg, var(--acc2), var(--cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.welcome-sub { font-size: 14px; color: var(--t2); line-height: 1.7; margin-bottom: 28px; }
.welcome-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 24px; }
.wc { background: var(--s2); border: 1px solid var(--b1); border-radius: 12px; padding: 14px 10px; }
.wc-icon { font-size: 22px; margin-bottom: 6px; }
.wc-title { font-size: 11px; font-weight: 700; color: var(--text); margin-bottom: 3px; }
.wc-desc { font-size: 9px; color: var(--t2); line-height: 1.4; }
.welcome-btns { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.wb-primary { background: linear-gradient(135deg, var(--acc), var(--acc3)); color: #fff; border: none; padding: 12px 24px; border-radius: 10px; font-family: 'Syne', sans-serif; font-size: 13px; font-weight: 700; cursor: pointer; transition: .15s; display: flex; align-items: center; gap: 8px; }
.wb-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }
.wb-secondary { background: transparent; border: 1.5px solid var(--b2); color: var(--t2); padding: 12px 20px; border-radius: 10px; font-family: 'Syne', sans-serif; font-size: 13px; font-weight: 600; cursor: pointer; transition: .15s; }
.wb-secondary:hover { border-color: var(--b3); color: var(--text); }
.welcome-note { font-size: 10px; color: var(--t3); margin-top: 14px; }

/* ============================================================
   ONBOARDING  — simple floating card
   ============================================================ */

/* Highlight ring pulse */
#obRing { animation: ob-ring-pulse 1.4s ease-in-out infinite; }
@keyframes ob-ring-pulse {
  0%,100% { opacity: .9; stroke-width: 2; }
  50%      { opacity: .4; stroke-width: 3; }
}

/* Guide card */
#obCard {
  position: fixed;
  z-index: 9000;
  width: 300px;
  background: var(--s1);
  border: 1.5px solid var(--acc);
  border-radius: 14px;
  padding: 16px 18px 14px;
  box-shadow: 0 8px 40px rgba(0,0,0,.6), 0 0 0 1px rgba(124,106,255,.15);
  /* default: bottom-right */
  bottom: 80px; right: 16px;
  left: auto; top: auto;
  transition: left .25s, top .25s;
}
#obCardHead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
#obStepLbl {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--acc2);
}
#obCloseBtn {
  background: none;
  border: none;
  color: var(--t3);
  font-size: 10px;
  cursor: pointer;
  font-family: 'Syne', sans-serif;
  padding: 2px 4px;
  border-radius: 4px;
  transition: .15s;
}
#obCloseBtn:hover { color: var(--red); background: rgba(255,71,87,.1); }
#obTitle {
  font-size: 14px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 6px;
  letter-spacing: -.2px;
}
#obText {
  font-size: 11px;
  color: var(--t2);
  line-height: 1.65;
  margin-bottom: 10px;
}
#obText strong { color: var(--text); }
#obWaiting {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(124,106,255,.08);
  border: 1px solid rgba(124,106,255,.2);
  border-radius: 8px;
  padding: 8px 10px;
  margin-bottom: 10px;
  font-size: 11px;
  color: var(--acc2);
  font-weight: 600;
}
.ob-spin {
  width: 14px; height: 14px;
  border: 2px solid rgba(124,106,255,.3);
  border-top-color: var(--acc);
  border-radius: 50%;
  animation: ob-spin .8s linear infinite;
  flex-shrink: 0;
}
@keyframes ob-spin { to { transform: rotate(360deg); } }
#obBtns {
  display: flex;
  align-items: center;
  gap: 8px;
}
#obNext {
  background: var(--acc);
  color: #fff;
  border: none;
  padding: 7px 16px;
  border-radius: 7px;
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: .15s;
}
#obNext:hover { background: var(--acc2); color: #0a0a15; }
.ob-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--b2);
  transition: .2s;
  flex-shrink: 0;
}
.ob-dot.active { background: var(--acc); width: 14px; border-radius: 3px; }
#obDots { display: flex; gap: 4px; margin-left: auto; }

/* ============================================================
   TUTORIAL PAGE STYLES
   ============================================================ */
.tut-body {
  overflow: auto;
  height: 100vh;
  background: var(--bg);
}
.tut-topbar {
  position: sticky;
  top: 0;
  height: 54px;
  background: rgba(15,15,26,.95);
  border-bottom: 1px solid var(--b1);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 14px;
  z-index: 100;
}
.tut-topbar::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--acc3), var(--acc), var(--cyan), transparent);
  opacity: .5;
}
.tut-layout { display: flex; min-height: calc(100vh - 54px); }
.tut-sidenav {
  width: 230px;
  flex-shrink: 0;
  position: sticky;
  top: 54px;
  height: calc(100vh - 54px);
  overflow-y: auto;
  background: var(--s1);
  border-right: 1px solid var(--b1);
  padding: 16px 12px;
}
.tut-main { flex: 1; padding: 40px 48px 80px; max-width: 840px; }
.snav-item { display: flex; align-items: center; gap: 10px; padding: 7px 10px; border-radius: 8px; cursor: pointer; transition: .15s; margin-bottom: 2px; border: 1px solid transparent; }
.snav-item:hover { background: var(--s2); border-color: var(--b1); }
.snav-item.active { background: rgba(124,106,255,.1); border-color: rgba(124,106,255,.25); }
.snav-item.done { background: rgba(29,219,126,.05); border-color: rgba(29,219,126,.2); }
.snav-num { width: 22px; height: 22px; border-radius: 50%; background: var(--s3); border: 1.5px solid var(--b2); display: flex; align-items: center; justify-content: center; font-size: 9px; font-weight: 700; color: var(--t2); flex-shrink: 0; transition: .15s; }
.snav-item.active .snav-num { background: rgba(124,106,255,.3); border-color: var(--acc); color: var(--acc2); }
.snav-item.done .snav-num { background: var(--green); border-color: var(--green); color: #000; font-size: 11px; }
.snav-text { font-size: 11px; font-weight: 600; flex: 1; color: var(--t2); }
.snav-item.active .snav-text, .snav-item:hover .snav-text { color: var(--text); }
.snav-time { font-size: 9px; color: var(--t3); font-family: 'JetBrains Mono', monospace; }

/* Tutorial content */
.tut-section { margin-bottom: 52px; scroll-margin-top: 80px; }
.tut-hero { margin-bottom: 56px; }
.hero-tag { display: inline-flex; align-items: center; gap: 6px; background: rgba(124,106,255,.12); border: 1px solid rgba(124,106,255,.25); color: var(--acc2); font-size: 10px; font-weight: 700; letter-spacing: 1px; padding: 4px 10px; border-radius: 20px; margin-bottom: 14px; text-transform: uppercase; }
.hero-title { font-size: 38px; font-weight: 800; letter-spacing: -2px; line-height: 1.1; margin-bottom: 10px; }
.hero-title span { background: linear-gradient(135deg, var(--acc2), var(--cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-sub { font-size: 14px; color: var(--t2); line-height: 1.7; max-width: 520px; margin-bottom: 20px; }
.hero-stats { display: flex; gap: 24px; flex-wrap: wrap; }
.stat-n { font-size: 22px; font-weight: 800; background: linear-gradient(135deg, var(--acc2), var(--cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; letter-spacing: -1px; }
.stat-l { font-size: 10px; color: var(--t3); text-transform: uppercase; letter-spacing: .5px; font-weight: 600; }

.sec-hdr { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 20px; }
.sec-ico { width: 42px; height: 42px; border-radius: 11px; display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0; }
.sec-num { font-size: 9px; font-weight: 700; letter-spacing: 1.5px; color: var(--t3); text-transform: uppercase; margin-bottom: 2px; }
.sec-title { font-size: 20px; font-weight: 800; letter-spacing: -.5px; }
.sec-desc { font-size: 12px; color: var(--t2); margin-top: 3px; line-height: 1.6; }

.tcard { background: var(--s1); border: 1px solid var(--b1); border-radius: 12px; padding: 16px; margin-bottom: 12px; transition: .2s; }
.tcard:hover { border-color: var(--b2); background: var(--s2); }
.tcard-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.tcard-ico { width: 32px; height: 32px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; }
.tcard-title { font-size: 13px; font-weight: 700; }
.tcard-desc { font-size: 11px; color: var(--t2); line-height: 1.6; }

.tip-box { display: flex; gap: 10px; border-radius: 10px; padding: 12px 14px; margin: 12px 0; }
.tip-box.info { background: rgba(124,106,255,.06); border: 1px solid rgba(124,106,255,.2); }
.tip-box.warn { background: rgba(255,215,0,.06); border: 1px solid rgba(255,215,0,.2); }
.tip-box.good { background: rgba(29,219,126,.06); border: 1px solid rgba(29,219,126,.2); }
.tip-ico { font-size: 16px; flex-shrink: 0; }
.tip-txt { font-size: 11px; color: var(--t2); line-height: 1.6; }
.tip-txt strong { color: var(--text); }

.checklist { display: flex; flex-direction: column; gap: 6px; margin-top: 14px; }
.check-item { display: flex; align-items: flex-start; gap: 10px; padding: 10px 12px; background: var(--s2); border: 1px solid var(--b1); border-radius: 9px; cursor: pointer; transition: .15s; }
.check-item:hover { border-color: var(--b2); }
.check-item.checked { background: rgba(29,219,126,.05); border-color: rgba(29,219,126,.25); }
.check-box { width: 18px; height: 18px; border-radius: 4px; border: 1.5px solid var(--b2); display: flex; align-items: center; justify-content: center; font-size: 10px; flex-shrink: 0; margin-top: 1px; transition: .15s; }
.check-item.checked .check-box { background: var(--green); border-color: var(--green); color: #000; }
.check-label { font-size: 11px; line-height: 1.5; color: var(--t2); }
.check-item.checked .check-label { text-decoration: line-through; opacity: .6; }

.done-btn { margin-top: 14px; width: 100%; padding: 10px; background: linear-gradient(135deg, var(--acc), var(--acc3)); color: #fff; border: none; border-radius: 9px; font-family: 'Syne', sans-serif; font-size: 12px; font-weight: 700; cursor: pointer; transition: .15s; }
.done-btn:hover { filter: brightness(1.1); }

.quiz-card { background: var(--s1); border: 1.5px solid var(--b1); border-radius: 12px; padding: 20px; margin-top: 14px; }
.quiz-q { font-size: 13px; font-weight: 600; margin-bottom: 12px; }
.quiz-opts { display: flex; flex-direction: column; gap: 7px; }
.quiz-opt { background: var(--s2); border: 1.5px solid var(--b1); border-radius: 8px; padding: 9px 12px; cursor: pointer; font-size: 11px; font-weight: 500; transition: .15s; }
.quiz-opt:hover { border-color: var(--b2); background: var(--s3); }
.quiz-opt.correct { border-color: var(--green); background: rgba(29,219,126,.1); color: var(--green); }
.quiz-opt.wrong { border-color: var(--red); background: rgba(255,71,87,.1); color: var(--red); }
.quiz-opt.disabled { cursor: default; }
.quiz-fb { margin-top: 10px; font-size: 11px; padding: 8px 12px; border-radius: 7px; display: none; }
.quiz-fb.show { display: block; }
.quiz-fb.ok { background: rgba(29,219,126,.1); border: 1px solid rgba(29,219,126,.3); color: var(--green); }
.quiz-fb.nok { background: rgba(255,71,87,.1); border: 1px solid rgba(255,71,87,.3); color: var(--red); }

.pcard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pcard { background: var(--s2); border: 1.5px solid var(--b1); border-radius: 12px; padding: 14px; transition: .2s; }
.pcard:hover { border-color: var(--b2); transform: translateY(-2px); }
.pcard-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.pcard-ico { width: 32px; height: 32px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 16px; }
.pcard-name { font-size: 12px; font-weight: 700; }
.pcard-sub { font-size: 9px; color: var(--t3); font-family: 'JetBrains Mono', monospace; }
.pcard-desc { font-size: 10px; color: var(--t2); line-height: 1.5; }
.pcard-note { font-size: 10px; color: var(--t3); margin-top: 6px; padding-top: 6px; border-top: 1px solid var(--b1); }

.flow-example { display: flex; align-items: center; gap: 8px; background: var(--bg); border: 1px solid var(--b1); border-radius: 10px; padding: 16px; overflow-x: auto; }
.fe-node { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.fe-box { padding: 6px 12px; border-radius: 8px; font-size: 10px; font-weight: 700; border: 1.5px solid; white-space: nowrap; }
.fe-lbl { font-size: 8px; color: var(--t3); text-transform: uppercase; letter-spacing: .5px; }
.fe-arrow { color: var(--acc); font-size: 16px; flex-shrink: 0; opacity: .7; }

.complete-banner { background: linear-gradient(135deg, rgba(124,106,255,.12), rgba(0,212,255,.08)); border: 1.5px solid rgba(124,106,255,.25); border-radius: 16px; padding: 28px; text-align: center; margin-top: 40px; }
.cb-icon { font-size: 44px; margin-bottom: 10px; }
.cb-title { font-size: 24px; font-weight: 800; letter-spacing: -1px; background: linear-gradient(135deg, var(--acc2), var(--cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 6px; }
.cb-desc { font-size: 12px; color: var(--t2); line-height: 1.7; max-width: 440px; margin: 0 auto 18px; }
.cb-btns { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

.tut-divider { height: 1px; background: linear-gradient(90deg, transparent, var(--b2), transparent); margin: 44px 0; }
.kbd { display: inline-flex; align-items: center; background: var(--s3); border: 1px solid var(--b2); border-radius: 4px; padding: 1px 6px; font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--acc2); font-weight: 600; }

.progress-bar { height: 3px; background: var(--b1); border-radius: 2px; width: 140px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--acc), var(--cyan)); border-radius: 2px; transition: width .4s ease; }
.progress-lbl { font-size: 10px; color: var(--t2); font-family: 'JetBrains Mono', monospace; }

/* Tutorial mobile */
@media (max-width: 768px) {
  .tut-sidenav { display: none; }
  .tut-main { padding: 24px 20px 60px; }
  .hero-title { font-size: 28px; }
  .pcard-grid { grid-template-columns: 1fr; }
  .flow-example { flex-direction: column; align-items: flex-start; }
  .fe-arrow { transform: rotate(90deg); }
  .tut-topbar { padding: 0 14px; gap: 10px; }
}