:root {
  --bg: #0b0f14;
  --card: #131a23;
  --card2: #1a232e;
  --text: #e6edf3;
  --dim: #8b98a5;
  --accent: #4cc2ff;
  --ok: #3fb950;
  --warn: #d29922;
  --err: #f85149;
  --idle: #6e7681;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--text);
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding: max(10px, env(safe-area-inset-top)) 12px 70px;
}
header { display: flex; align-items: baseline; gap: 10px; padding: 6px 2px 14px; }
header h1 { font-size: 20px; font-weight: 700; letter-spacing: .3px; }
.conn { font-size: 12px; color: var(--dim); }
.conn.live { color: var(--ok); }
.conn.connecting { color: var(--warn); }
.conn.down { color: var(--err); }
main { display: grid; gap: 14px; max-width: 760px; margin: 0 auto; }
.card { background: var(--card); border: 1px solid #223; border-radius: 14px; padding: 14px 16px; }
.card-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.card-head h2 { font-size: 17px; }
.pill { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .6px; padding: 3px 9px; border-radius: 999px; background: var(--idle); color: #fff; }
.pill.printing { background: var(--ok); color: #04140a; animation: pulse 2s infinite; }
.pill.pause, .pill.paused { background: var(--warn); color: #14100a; }
.pill.error, .pill.offline, .pill.auth_error, .pill.api_error, .pill.lan_mode_off { background: var(--err); }
.pill.complete { background: var(--accent); color: #04121a; }
.pill.heating, .pill.calibrate_doing { background: var(--warn); }
@keyframes pulse { 50% { opacity: .65; } }
.bar { height: 8px; background: var(--card2); border-radius: 4px; overflow: hidden; margin: 8px 0; }
.bar > div { height: 100%; background: linear-gradient(90deg, var(--accent), #2ea8e6); width: 0; transition: width .8s; }
.row { display: flex; flex-wrap: wrap; gap: 6px 14px; color: var(--dim); font-size: 13px; margin: 3px 0; }
.row b { color: var(--text); font-weight: 600; }
.file { color: var(--text); font-size: 13px; margin: 4px 0; word-break: break-all; }
.badge-warn { color: var(--warn); font-weight: 600; }
.cam { margin-top: 10px; display: none; }
.cam img { width: 100%; border-radius: 9px; background: #000; aspect-ratio: 4/3; object-fit: contain; }
.cam.on { display: block; }
.ifs { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.slot { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--dim); background: var(--card2); padding: 3px 8px; border-radius: 8px; }
.slot i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; background: #444; }
.slot.active { outline: 1.5px solid var(--accent); }
.btns { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.btns button, footer button {
  background: var(--card2); color: var(--text); border: 1px solid #2c3a47;
  border-radius: 9px; padding: 7px 14px; font-size: 13px; font-weight: 600; cursor: pointer;
}
.btns button:active { transform: scale(.97); }
.btns button.danger { border-color: #5c2a2a; color: var(--err); }
.btns button.active { border-color: var(--accent); color: var(--accent); }
.btns button:disabled { opacity: .4; cursor: default; }
.err-line { color: var(--err); font-size: 12px; margin-top: 6px; }
.stale { opacity: .55; }
footer { position: fixed; bottom: 0; left: 0; right: 0; display: flex; justify-content: space-between; align-items: center; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: rgba(11, 15, 20, .88); backdrop-filter: blur(8px); font-size: 12px; color: var(--dim); }
.gate { position: fixed; inset: 0; background: var(--bg); z-index: 10; display: flex; align-items: center; justify-content: center; padding: 20px; }
.gate.hidden { display: none; }
.gate-card { max-width: 340px; width: 100%; background: var(--card); border: 1px solid #223; border-radius: 14px; padding: 22px; }
.gate-card h1 { margin-bottom: 8px; }
.gate-card p { color: var(--dim); font-size: 13px; margin-bottom: 12px; }
.gate-card input { width: 100%; padding: 10px; border-radius: 9px; border: 1px solid #2c3a47; background: var(--bg); color: var(--text); margin-bottom: 10px; font-size: 14px; }
.gate-card button { width: 100%; padding: 10px; border-radius: 9px; border: 0; background: var(--accent); color: #04121a; font-weight: 700; font-size: 14px; cursor: pointer; }
.err { color: var(--err); font-size: 12px; min-height: 14px; }

.ai { margin-top: 8px; padding: 8px 10px; border-radius: 8px; font-size: 12px; line-height: 1.45;
      background: rgba(76, 194, 255, .08); border: 1px solid rgba(76, 194, 255, .25); }
.ai b { display: block; font-size: 12.5px; }
.ai small { display: block; opacity: .75; margin-top: 2px; }
.ai-ts { opacity: .5; }
.ai-ok { border-color: rgba(60, 200, 120, .35); background: rgba(60, 200, 120, .08); }
.ai-warning { border-color: rgba(255, 190, 60, .45); background: rgba(255, 190, 60, .1); }
.ai-problem { border-color: rgba(255, 90, 90, .5); background: rgba(255, 90, 90, .12); }
.badge-ok { background: rgba(60, 200, 120, .18); color: #6fe3a8; padding: 2px 7px; border-radius: 20px; font-size: 11px; }

/* per-card temperature/progress graphs */
.graphs { margin-top: 8px; border: 1px solid #223; border-radius: 8px; background: var(--card); }
.graphs summary { cursor: pointer; padding: 6px 10px; font-size: 12px; color: var(--dim); user-select: none; }
.graphs .gwrap { padding: 4px 10px 10px; }
.graphs svg { width: 100%; height: 90px; display: block; }
.gmsg { color: var(--dim); font-size: 12px; padding: 8px 0; }
.glegend { font-size: 10.5px; color: var(--dim); margin-top: 4px; }
.lg-nozzle { color: #4cc2ff; } .lg-bed { color: #ff7a45; }

/* files / upload / preheat drawer */
.drawer { display: none; margin-top: 10px; border: 1px solid #223; border-radius: 12px; background: var(--card2); padding: 10px 12px; }
.drawer.on { display: block; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; border-bottom: 1px solid #223; padding-bottom: 7px; }
.drawer-head b { font-size: 11.5px; color: var(--dim); text-transform: uppercase; letter-spacing: .5px; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.drawer button { background: var(--card); color: var(--text); border: 1px solid #2c3a47; border-radius: 8px; padding: 5px 11px; font-size: 12.5px; font-weight: 600; cursor: pointer; font-family: inherit; }
.drawer button:active { transform: scale(.97); }
.drawer button:disabled { opacity: .45; cursor: default; transform: none; }
.drawer .btns button { background: var(--card); padding: 5px 11px; font-size: 12.5px; }
.psec { margin-top: 12px; }
.psec:first-child { margin-top: 0; }
.psec-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; flex-wrap: wrap; }
.psec-head b { font-size: 11px; color: var(--dim); text-transform: uppercase; letter-spacing: .5px; font-weight: 700; }
.psec-head button { margin-left: auto; padding: 3px 9px; font-size: 11.5px; font-weight: 600; color: var(--dim); background: transparent; border-color: #2c3a47; cursor: pointer; border-radius: 8px; font-family: inherit; }
.psec-head button:hover { color: var(--text); border-color: #3a4a59; }
.psec-head button:disabled { opacity: .45; cursor: default; color: var(--dim); border-color: #2c3a47; transform: none; background: transparent; }

.fname { word-break: break-all; }

/* upload */
.uprow { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 4px; }
.uprow input[type=file] { flex: 1 1 150px; min-width: 0; font-size: 12px; color: var(--dim); font-family: inherit; }
.uprow input[type=file]::file-selector-button { background: var(--card); color: var(--text); border: 1px solid #2c3a47; border-radius: 8px; padding: 5px 10px; font-size: 12px; font-weight: 600; margin-right: 8px; cursor: pointer; font-family: inherit; }

/* preheat */
.phrow { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 8px; }
.phrow label { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--dim); white-space: nowrap; }
.phrow input[type=number] { width: 72px; padding: 5px 8px; border-radius: 8px; border: 1px solid #2c3a47; background: var(--bg); color: var(--text); font-size: 13px; font-family: inherit; }

/* in-flight spinner (upload / file list / start) */
.spin { display: inline-block; animation: spin 1s linear infinite; font-style: normal; line-height: 1; }
@keyframes spin { to { transform: rotate(360deg); } }

/* tabs */
#tabs { margin-left: auto; display: flex; gap: 6px; }
.tab { padding: 6px 12px; border-radius: 9px; border: 1px solid #2c3a47; background: transparent; color: var(--dim); font-size: 12.5px; font-weight: 600; cursor: pointer; }
.tab.active { background: var(--accent); border-color: var(--accent); color: #04121a; }
#historyView { padding-bottom: 60px; }
.hidden { display: none !important; }

/* history: stat tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin-bottom: 14px; }
.tile { background: var(--card); border: 1px solid #223; border-radius: 12px; padding: 12px 14px; }
.tile b { display: block; font-size: 22px; letter-spacing: -.5px; }
.tile span { font-size: 11px; color: var(--dim); text-transform: uppercase; letter-spacing: .5px; }
.tile .sub { display: block; font-size: 11px; color: var(--dim); margin-top: 3px; }

/* history: 14-day bar chart */
.chart { background: var(--card); border: 1px solid #223; border-radius: 12px; padding: 14px; margin-bottom: 14px; }
.chart h3 { font-size: 12px; color: var(--dim); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 10px; }
.bars { display: flex; align-items: flex-end; gap: 6px; height: 110px; }
.barcol { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; min-width: 0; }
.barcol .barv { width: 100%; background: linear-gradient(180deg, var(--accent), #2a7fb8); border-radius: 4px 4px 0 0; min-height: 2px; }
.barcol .barl { font-size: 9.5px; color: var(--dim); white-space: nowrap; }

/* history: session table */
.htable { background: var(--card); border: 1px solid #223; border-radius: 12px; padding: 6px 0; }
.htable table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.htable th { text-align: left; padding: 7px 10px; color: var(--dim); font-size: 11px; text-transform: uppercase; letter-spacing: .4px; border-bottom: 1px solid #223; }
.htable td { padding: 8px 10px; border-bottom: 1px solid #1a232e; vertical-align: top; }
.htable tr:last-child td { border-bottom: 0; }
.htable .num { text-align: right; white-space: nowrap; }
.htable .fopen { color: var(--accent); font-weight: 700; }
.htable small { color: var(--dim); display: block; margin-top: 2px; }
.res-complete { color: #6fe3a8; } .res-failed { color: var(--err); } .res-cancelled { color: var(--warn); }
.res-aborted { color: var(--warn); } .res-interrupted { color: var(--err); } .res-open { color: var(--accent); }