/* main css for statespace expo project
   done by sanskriti - ai course FT3
   responsive update - mobile / tablet / laptop / desktop */

:root {
  --bg: #06060f;
  --s1: #0b0b18;
  --s2: #10101f;
  --s3: #16162a;
  --s4: #1c1c36;
  --bd: rgba(255,255,255,0.07);
  --bd2: rgba(255,255,255,0.13);
  --txt: #dde0f5;
  --mut: #5a5a8a;
  --dim: #2e2e58;
  --cy: #00d4ff;
  --gn: #3effa0;
  --yw: #ffd166;
  --or: #ff9f43;
  --rd: #ff4c6a;
  --vi: #6c63ff;
  --pk: #ff6b9d;
  --frontier: #f59e0b;
  --visited:  #3b82f6;
  --path:     #10b981;
  --mono: 'JetBrains Mono', monospace;
  --sans: 'Outfit', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  /* allow scroll on mobile */
  overflow-x: hidden;
}

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--txt);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ============================================================
   TOPBAR
============================================================ */
.topbar {
  height: 48px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 10px;
  background: var(--s1);
  border-bottom: 1px solid var(--bd);
  flex-shrink: 0;
  z-index: 200;
  position: sticky;
  top: 0;
}

.brand {
  font-size: 15px;
  font-weight: 900;
  letter-spacing: -0.5px;
  display: flex;
  align-items: baseline;
  white-space: nowrap;
}
.brand-ss { color: var(--cy); }
.brand-ex {
  color: var(--txt);
  opacity: .55;
  font-weight: 400;
  font-size: 11px;
  margin-left: 4px;
  letter-spacing: .5px;
}

.topbar-sep { width: 1px; height: 20px; background: var(--bd2); flex-shrink: 0; }
.topbar-desc { font-size: 10px; color: var(--mut); font-family: var(--mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* color legend */
.tl { display: flex; align-items: center; gap: 10px; margin-left: 4px; }
.tli { display: flex; align-items: center; gap: 4px; font: 600 8px var(--mono); color: var(--mut); white-space: nowrap; }
.tld { width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0; }

.sound-btn {
  font-size: 14px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 5px;
  transition: opacity .2s;
  flex-shrink: 0;
}
.sound-btn:hover { opacity: .7; }

/* hamburger button - mobile only */
.menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--txt);
  font-size: 18px;
  cursor: pointer;
  padding: 4px 6px;
  flex-shrink: 0;
}

.sp { flex: 1; }

/* ============================================================
   BODY LAYOUT
============================================================ */
.body {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* ============================================================
   SIDEBAR
============================================================ */
.sidebar {
  width: 215px;
  min-width: 215px;
  overflow-y: auto;
  background: var(--s1);
  border-right: 1px solid var(--bd);
  padding: 8px 0 20px;
  flex-shrink: 0;
  transition: transform .25s ease, width .25s ease;
  z-index: 100;
}

.sb-label {
  font: 600 8px var(--mono);
  letter-spacing: 2.5px;
  color: var(--mut);
  text-transform: uppercase;
  padding: 12px 14px 5px;
  opacity: .65;
}

.sb-btn {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 11px;
  margin: 1px 6px;
  border: none;
  border-radius: 7px;
  background: transparent;
  color: var(--mut);
  cursor: pointer;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 500;
  text-align: left;
  transition: background .15s, color .15s;
  width: calc(100% - 12px);
}
.sb-btn:hover  { background: var(--s2); color: var(--txt); }
.sb-btn.active { background: var(--s3); color: var(--txt); }

.sb-icon {
  width: 28px; height: 28px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; flex-shrink: 0;
  background: var(--s3);
}
.sb-btn.active .sb-icon { background: var(--s4); }

.sb-meta { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.sb-name { font-size: 12px; font-weight: 600; line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sb-tag  { font: 400 9px var(--mono); color: var(--mut); }

/* overlay behind sidebar on mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 99;
}

/* ============================================================
   MAIN
============================================================ */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* ============================================================
   TOOLBAR
============================================================ */
.toolbar {
  height: 46px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  background: var(--s1);
  border-bottom: 1px solid var(--bd);
  flex-shrink: 0;
  overflow-x: auto;
  /* hide scrollbar but keep scroll */
  scrollbar-width: none;
}
.toolbar::-webkit-scrollbar { display: none; }

.tb-title { font-size: 12px; font-weight: 700; white-space: nowrap; }
.tb-sep { width: 1px; height: 18px; background: var(--bd2); flex-shrink: 0; }

select.sel {
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid var(--bd2);
  background: var(--s2);
  color: var(--txt);
  font: 500 11px var(--sans);
  cursor: pointer;
  outline: none;
  flex-shrink: 0;
}

.btn {
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--bd2);
  background: var(--s2);
  color: var(--mut);
  font: 500 11px var(--sans);
  cursor: pointer;
  transition: all .13s;
  white-space: nowrap;
  outline: none;
  flex-shrink: 0;
}
.btn:hover  { color: var(--txt); background: var(--s3); }
.btn:active { transform: scale(.97); }

.btn.run {
  background: var(--cy);
  color: #050510;
  border-color: transparent;
  font-weight: 700;
}
.btn.run:hover    { opacity: .85; }
.btn.run:disabled { opacity: .35; cursor: not-allowed; transform: none; }
.btn.warn { color: var(--rd); border-color: rgba(255,76,106,.25); }

.speed-wrap { display: flex; align-items: center; gap: 5px; flex-shrink: 0; }
.speed-lbl  { font: 500 10px var(--mono); color: var(--mut); min-width: 28px; text-align: right; }
input[type=range] { width: 65px; accent-color: var(--frontier); cursor: pointer; }

.step-pill {
  font: 600 10px var(--mono);
  padding: 3px 8px;
  border-radius: 10px;
  background: var(--s2);
  border: 1px solid var(--bd);
  color: var(--mut);
  white-space: nowrap;
  flex-shrink: 0;
}

#extra-tools { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }

/* ============================================================
   WORKSPACE
============================================================ */
.workspace {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* canvas area */
.canvas-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.canvas-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  overflow: hidden;
  position: relative;
}

canvas {
  display: block;
  border-radius: 8px;
  border: 1px solid var(--bd);
  max-width: 100%;
  max-height: 100%;
}

/* status bar */
.status-bar {
  height: 36px;
  min-height: 36px;
  display: flex;
  align-items: center;
  background: var(--s1);
  border-top: 1px solid var(--bd);
  padding: 0 10px;
  flex-shrink: 0;
  overflow: hidden;
}

.phase-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  margin-right: 6px;
  transition: background .3s, box-shadow .3s;
  flex-shrink: 0;
}
.phase-txt {
  font: 700 8px var(--mono);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-right: 10px;
  min-width: 60px;
  transition: color .3s;
}
.status-msg {
  font: 400 9px var(--mono);
  color: var(--mut);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sc-row { display: flex; gap: 0; margin-left: auto; flex-shrink: 0; }
.sc {
  padding: 0 10px;
  border-left: 1px solid var(--bd);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.sc-v { font: 700 12px var(--mono); color: var(--txt); line-height: 1.1; }
.sc-k { font: 400 7px var(--mono); color: var(--mut); letter-spacing: 1px; text-transform: uppercase; }

/* ============================================================
   RIGHT INFO PANEL
============================================================ */
.info {
  width: 260px;
  min-width: 260px;
  overflow-y: auto;
  background: var(--s1);
  border-left: 1px solid var(--bd);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform .25s ease;
}

.ip-sec { padding: 11px 13px; border-bottom: 1px solid var(--bd); }
.ip-lbl {
  font: 600 8px var(--mono);
  letter-spacing: 2px;
  color: var(--mut);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.acard {
  background: var(--s2);
  border: 1px solid var(--bd);
  border-radius: 8px;
  padding: 10px 11px;
}
.acard-name { font-size: 12px; font-weight: 700; margin-bottom: 4px; }
.acard-desc { font-size: 10px; color: var(--mut); line-height: 1.65; margin-bottom: 8px; }

.tags { display: flex; gap: 4px; flex-wrap: wrap; }
.tag {
  font: 500 9px var(--mono);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--bd);
  background: rgba(255,255,255,.03);
  color: var(--mut);
}
.tag.g { background: rgba(62,255,160,.07);  border-color: rgba(62,255,160,.2);  color: var(--gn); }
.tag.r { background: rgba(255,76,106,.07);  border-color: rgba(255,76,106,.2);  color: var(--rd); }
.tag.y { background: rgba(255,209,102,.07); border-color: rgba(255,209,102,.2); color: var(--yw); }
.tag.b { background: rgba(0,212,255,.07);   border-color: rgba(0,212,255,.2);   color: var(--cy); }

.algo-steps { display: flex; flex-direction: column; gap: 3px; margin-top: 8px; }
.algo-step {
  display: flex; align-items: flex-start; gap: 7px;
  font: 400 9.5px var(--mono); color: var(--mut);
  padding: 4px 6px; border-radius: 5px;
  line-height: 1.5; transition: background .2s, color .2s;
}
.algo-step.active { background: rgba(245,158,11,.1); color: var(--yw); border-left: 2px solid var(--yw); }
.algo-step.done   { color: rgba(62,255,160,.6); }
.step-num { font-weight: 700; color: var(--dim); min-width: 14px; flex-shrink: 0; }

.color-key { display: flex; flex-direction: column; gap: 5px; }
.ck-row { display: flex; align-items: center; gap: 8px; font: 500 10px var(--mono); color: var(--mut); }
.ck-swatch { width: 26px; height: 11px; border-radius: 3px; flex-shrink: 0; }
.ck-count  { margin-left: auto; font-weight: 700; color: var(--txt); font-size: 10px; }

.edit-panel {
  background: var(--s3);
  border-radius: 7px;
  padding: 10px 11px;
  border: 1px solid rgba(255,255,255,.06);
  margin-top: 2px;
}
.edit-row { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; font: 500 10px var(--mono); }
.edit-row:last-child { margin-bottom: 0; }
.edit-lbl { color: var(--mut); min-width: 70px; }
.edit-inp {
  background: var(--s2);
  border: 1px solid var(--bd2);
  border-radius: 5px;
  color: var(--txt);
  font: 500 11px var(--mono);
  padding: 3px 8px;
  width: 100%;
  outline: none;
}
.edit-inp:focus { border-color: var(--cy); }

.log {
  flex: 1;
  overflow-y: auto;
  padding: 7px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.le {
  font: 400 9.5px var(--mono);
  color: var(--mut);
  padding: 2px 5px;
  border-radius: 4px;
  line-height: 1.5;
}
.le.ok  { color: var(--gn);       background: rgba(62,255,160,.05);  border-left: 2px solid rgba(62,255,160,.3); }
.le.err { color: var(--rd);       background: rgba(255,76,106,.05);  border-left: 2px solid rgba(255,76,106,.3); }
.le.hi  { color: var(--cy);       border-left: 2px solid rgba(0,212,255,.25); }
.le.fr  { color: var(--frontier); background: rgba(245,158,11,.04);  border-left: 2px solid rgba(245,158,11,.3); }
.le.vis { color: var(--visited);  background: rgba(59,130,246,.04);  border-left: 2px solid rgba(59,130,246,.3); }

@keyframes flash { 0%{opacity:1} 50%{opacity:.4} 100%{opacity:1} }
.flash { animation: flash .4s ease 3; }

::-webkit-scrollbar { width: 3px; height: 3px; }
::-webkit-scrollbar-thumb { background: var(--bd2); border-radius: 4px; }

/* ============================================================
   TABLET — max 1024px
   sidebar collapses, info panel goes below canvas
============================================================ */
@media (max-width: 1024px) {

  html, body { overflow-y: auto; height: auto; }

  .body { overflow: visible; flex-direction: column; }

  /* sidebar becomes a slide-in drawer */
  .sidebar {
    position: fixed;
    top: 48px;
    left: 0;
    height: calc(100vh - 48px);
    transform: translateX(-100%);
    box-shadow: 4px 0 24px rgba(0,0,0,.5);
  }
  .sidebar.open { transform: translateX(0); }

  .sidebar-overlay.open { display: block; }

  /* show hamburger */
  .menu-btn { display: flex; }

  /* hide topbar description and legend on smaller screens */
  .topbar-desc { display: none; }

  .main { overflow: visible; }

  /* workspace stacks vertically */
  .workspace {
    flex-direction: column;
    overflow: visible;
  }

  /* canvas takes full width */
  .canvas-wrap { overflow: visible; }

  .canvas-area {
    height: 60vw;
    min-height: 320px;
    max-height: 520px;
  }

  /* info panel goes below canvas, full width */
  .info {
    width: 100%;
    min-width: unset;
    border-left: none;
    border-top: 1px solid var(--bd);
    max-height: none;
    overflow: visible;
  }

  /* status bar smaller */
  .sc { padding: 0 8px; }
  .sc-v { font-size: 11px; }

  /* legend wraps or hides some items */
  .tl { gap: 8px; }
}

/* ============================================================
   MOBILE — max 640px
   everything single column, simplified toolbar
============================================================ */
@media (max-width: 640px) {

  /* topbar */
  .topbar { padding: 0 10px; gap: 8px; height: 44px; }
  .brand { font-size: 14px; }
  .brand-ex { display: none; }
  .tl { display: none; } /* hide color legend - shown in panel instead */

  /* toolbar scrolls horizontally */
  .toolbar { height: 42px; padding: 0 8px; gap: 5px; }
  .tb-title { font-size: 11px; max-width: 80px; overflow: hidden; text-overflow: ellipsis; }
  .tb-sep { display: none; }
  .speed-wrap { display: none; } /* hide speed on mobile - use default */
  .step-pill  { display: none; }

  /* canvas area shorter on phone */
  .canvas-area {
    height: 75vw;
    min-height: 260px;
    max-height: 400px;
    padding: 8px;
  }

  /* status bar - hide some counters */
  .status-bar { height: 32px; padding: 0 8px; }
  .phase-txt  { min-width: 50px; font-size: 7px; }
  .status-msg { font-size: 8px; }
  .sc-k       { display: none; } /* just show values */
  .sc-v       { font-size: 11px; }
  .sc         { padding: 0 6px; }

  /* info panel sections collapse nicely */
  .ip-sec { padding: 9px 11px; }
  .acard-desc { font-size: 9.5px; }

  /* edit inputs full width */
  .edit-row { flex-wrap: wrap; }
  .edit-lbl { min-width: unset; width: 100%; margin-bottom: 2px; }
  .edit-inp { width: 100%; }

  /* buttons slightly smaller */
  .btn { padding: 4px 8px; font-size: 10px; }
  .btn.run { padding: 4px 10px; }

  select.sel { font-size: 10px; padding: 3px 6px; }
}

/* ============================================================
   LARGE DESKTOP — min 1400px
   give info panel a bit more room
============================================================ */
@media (min-width: 1400px) {
  .info { width: 300px; min-width: 300px; }
  .sidebar { width: 230px; min-width: 230px; }
}