:root {
  --bg: #f5f7fa; --surface: #ffffff; --card: #ffffff; --border: #e2e8f0;
  --borderHi: #cbd5e1; --morning: #d97706; --afternoon: #0d9488; --night: #6366f1;
  --accent: #0ea5e9; --green: #16a34a; --red: #dc2626;
  --text: #1e293b; --muted: #64748b; --dim: #94a3b8;
  --font: 'Sarabun', sans-serif; --mono: 'JetBrains Mono', monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: var(--font); font-size: 14px; min-height: 100vh; }
body::before {
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image: radial-gradient(circle, rgba(14,165,233,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ── LOGIN SCREEN ── */
#login-screen {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
}
.login-box {
  background: var(--card); border: 1px solid var(--borderHi);
  border-radius: 16px; padding: 36px 32px; width: 320px;
  display: flex; flex-direction: column; gap: 20px;
  box-shadow: 0 8px 40px rgba(0,0,0,.1);
}
.login-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 4px; }
.login-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg,#1d4ed8,#0ea5e9);
  display: flex; align-items: center; justify-content: center; font-size: 20px;
}
.login-title { font-size: 17px; font-weight: 700; }
.login-sub   { font-size: 11px; color: var(--muted); font-family: var(--mono); text-transform: uppercase; letter-spacing: .07em; }

.login-field { display: flex; flex-direction: column; gap: 6px; }
.login-label { font-size: 12px; color: var(--muted); }
.login-input {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px; font-family: var(--font); font-size: 14px; color: var(--text);
  outline: none; transition: border-color .2s; width: 100%;
}
.login-input:focus { border-color: var(--accent); }

.login-btn {
  width: 100%; padding: 11px; border-radius: 9px; border: none;
  background: var(--accent); color: #000; font-family: var(--font);
  font-size: 14px; font-weight: 700; cursor: pointer; transition: background .15s;
}
.login-btn:hover { background: #67d2fb; }
.login-error { font-size: 12px; color: var(--red); text-align: center; min-height: 16px; }

/* ── APP ── */
#app { display: none; }

/* TOPBAR */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  height: 54px; padding: 0 20px;
  display: flex; align-items: center; gap: 14px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-ico {
  width: 32px; height: 32px; border-radius: 8px;
  background: linear-gradient(135deg,#1d4ed8,#0ea5e9);
  display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.brand-name { font-weight: 700; font-size: 15px; }
.brand-sub  { font-family: var(--mono); font-size: 10px; color: var(--accent); letter-spacing:.07em; text-transform:uppercase; }
.topbar-sep { width:1px; height:26px; background:var(--border); }
.topbar-right { margin-left:auto; display:flex; align-items:center; gap:10px; }
.user-pill {
  display: flex; align-items: center; gap: 7px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 20px; padding: 4px 12px 4px 8px;
  font-family: var(--mono); font-size: 12px; color: var(--muted);
}
.user-dot { width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 5px var(--green); }

/* BTNS */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: 8px;
  font-family: var(--font); font-size: 13px; font-weight: 500;
  cursor: pointer; border: none; transition: all .15s; white-space: nowrap;
}
.btn-sm { padding: 5px 11px; font-size: 12px; border-radius: 6px; }
.btn-ghost { background:transparent; border:1px solid var(--borderHi); color:var(--muted); }
.btn-ghost:hover { color:var(--text); border-color:var(--accent); }
.btn-accent { background:var(--accent); color:#000; font-weight:700; }
.btn-accent:hover { background:#67d2fb; }

/* MAIN */
main { position:relative; z-index:1; padding:20px; max-width:1400px; margin:0 auto; }

/* SHIFT TABS */
.shift-tabs {
  display:flex; gap:4px; background:var(--surface); border:1px solid var(--border);
  border-radius:12px; padding:4px; margin-bottom:20px;
}
.shift-tab {
  flex:1; display:flex; align-items:center; justify-content:center; gap:8px;
  padding:10px 12px; border-radius:9px; border:1px solid transparent;
  background:transparent; font-family:var(--font); font-size:13px; font-weight:600;
  color:var(--muted); cursor:pointer; transition:all .2s;
}
.shift-tab:hover:not(.active){ color:var(--text); background:var(--border); }
.shift-tab.active {
  background: color-mix(in srgb, var(--sc) 10%, transparent);
  border-color: color-mix(in srgb, var(--sc) 28%, transparent);
  color: var(--sc);
}
.tab-dot { width:8px;height:8px;border-radius:50%;background:currentColor;flex-shrink:0; }
.tab-time { font-family:var(--mono);font-size:10px;opacity:.6; }

/* TOOLBAR */
.toolbar { display:flex; align-items:center; gap:12px; margin-bottom:20px; flex-wrap:wrap; }
.count-ctrl {
  display:flex; align-items:center;
  background:var(--card); border:1px solid var(--border); border-radius:9px; overflow:hidden;
}
.count-ctrl button {
  width:34px; height:34px; background:transparent; border:none;
  color:var(--text); font-size:18px; cursor:pointer; transition:background .15s;
  display:flex; align-items:center; justify-content:center;
}
.count-ctrl button:hover { background:var(--borderHi); }
.count-ctrl span { font-family:var(--mono); font-size:16px; font-weight:600; padding:0 14px; min-width:44px; text-align:center; }
.toolbar-lbl { font-size:12px; color:var(--muted); font-family:var(--mono); }

/* GRID */
.grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(190px,1fr)); gap:14px; }

/* CARD */
.card {
  background:var(--card); border:1px solid var(--border); border-radius:14px;
  overflow:hidden; transition:border-color .2s, transform .2s; position:relative;
}
.card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:2px;
  background: var(--dim); transition: background .3s;
}
.card.filled::before { background: var(--shift-color,var(--accent)); }
.card:hover { border-color:var(--borderHi); transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,0,0,.08); }

.card-head { display:flex; align-items:center; justify-content:space-between; padding:11px 13px 8px; }
.card-id {
  font-family:var(--mono); font-size:10px;
  background:var(--bg); border:1px solid var(--border);
  padding:2px 7px; border-radius:4px; color:var(--muted); letter-spacing:.05em;
}
.machine-name {
  font-family:var(--mono); font-size:12px; font-weight:600; color:var(--text);
  background:transparent; border:none; outline:none;
  cursor:pointer; text-align:right; max-width:90px;
  padding:2px 5px; border-radius:4px; transition:background .15s;
}
.machine-name:hover, .machine-name:focus { background:var(--border); cursor:text; }

/* PHOTO ZONE */
.photo-zone {
  margin: 0 12px 12px; aspect-ratio:1; border-radius:10px;
  background:var(--bg); border:2px dashed var(--border);
  position:relative; overflow:hidden; cursor:pointer; transition:border-color .2s;
}
.photo-zone:hover { border-color:var(--borderHi); }
.photo-zone.drag { border-color:var(--accent); background:rgba(56,189,248,.06); }
.photo-zone.has-photo { border-style:solid; border-color:var(--borderHi); }

.photo-ph {
  position:absolute; inset:0;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:6px;
  pointer-events:none; padding:12px;
}
.ph-circle { width:50px;height:50px;border-radius:50%;background:var(--border); display:flex;align-items:center;justify-content:center;font-size:22px; }
.ph-text { font-size:11px; color:var(--dim); text-align:center; line-height:1.5; }

.photo-img { position:absolute; inset:0; width:100%;height:100%; object-fit:cover; display:none; }
.photo-img.show { display:block; }

.photo-overlay {
  position:absolute; inset:0; background:rgba(0,0,0,.55);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:7px;
  opacity:0; transition:opacity .2s;
}
.photo-zone:hover .photo-overlay.active { opacity:1; }

.photo-saving {
  position:absolute; inset:0; background:rgba(255,255,255,.85);
  display:none; align-items:center; justify-content:center;
  flex-direction:column; gap:6px; font-size:12px; color:var(--accent); background:rgba(255,255,255,.9); border-radius:8px; padding:12px;
}
.photo-saving.show { display:flex; }
.spinner { width:22px;height:22px;border-radius:50%; border:2px solid var(--border); border-top-color:var(--accent); animation:spin .7s linear infinite; }
@keyframes spin{to{transform:rotate(360deg)}}
.file-inp { display:none; }

/* URL BOX */
.card-url { padding:0 12px 12px; }
.url-box { display:flex; align-items:center; gap:6px; background:var(--bg); border:1px solid var(--border); border-radius:7px; padding:6px 8px; }
.url-text { font-family:var(--mono); font-size:10px; color:var(--muted); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; flex:1; }
.copy-btn { background:transparent; border:none; cursor:pointer; font-size:13px; padding:0 2px; opacity:.5; transition:opacity .15s; flex-shrink:0; }
.copy-btn:hover { opacity:1; }


/* EMP NAME */
.emp-name-wrap { padding: 0 12px 10px; }
.emp-name-inp {
  width:100%; background:var(--bg); border:1px solid var(--border);
  border-radius:7px; padding:7px 10px;
  font-family:var(--font); font-size:13px; color:var(--text);
  outline:none; transition:border-color .2s; text-align:center;
}
.emp-name-inp::placeholder { color:var(--dim); }
.emp-name-inp:focus { border-color:var(--accent); }

/* TOAST */
#toasts { position:fixed; bottom:20px; right:20px; z-index:999; display:flex; flex-direction:column; gap:8px; pointer-events:none; }
.toast { background:var(--card); border:1px solid var(--borderHi); border-radius:10px; padding:10px 15px; font-size:13px; display:flex; align-items:center; gap:8px; box-shadow:0 4px 16px rgba(0,0,0,.1); animation:tIn .22s ease; pointer-events:auto; }
.toast.ok  { border-color:rgba(52,211,153,.3); color:var(--green); }
.toast.err { border-color:rgba(248,113,113,.3); color:var(--red); }
.toast.inf { border-color:rgba(56,189,248,.3);  color:var(--accent); }
@keyframes tIn { from{transform:translateX(110%);opacity:0} to{transform:none;opacity:1} }

::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-thumb{background:var(--borderHi);border-radius:3px}