:root {
  --bg: #0b0f14;
  --panel: #131a22;
  --panel-2: #1a232d;
  --border: #232e3a;
  --text: #e6edf3;
  --text-dim: #8b98a5;
  --accent: #3b82f6;
  --accent-hover: #549bfa;
  --danger: #f85149;
  --ok: #3fb950;
  --warn: #d29922;
  --radius: 10px;
  --radius-lg: 14px;
  font-size: 16px;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Sarabun", sans-serif;
  -webkit-tap-highlight-color: transparent;
}
button { font-family: inherit; }

/* ── หน้าล็อกอิน ── */
.login-body { display: flex; align-items: center; justify-content: center; padding: 16px; }
.login-box {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 300px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.login-box h1 {
  margin: 0 0 24px;
  font-size: 24px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}
.login-box input {
  width: 100%;
  padding: 12px 14px;
  margin-bottom: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  transition: border-color .15s;
}
.login-box input:focus { outline: none; border-color: var(--accent); }
.login-box button {
  width: 100%;
  padding: 12px;
  border-radius: var(--radius);
  border: none;
  background: var(--accent);
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
}
.login-box button:hover { background: var(--accent-hover); }
.err { color: var(--danger); font-size: 13px; min-height: 18px; margin: 10px 0 0; }

/* ── หน้าแอปหลัก ── */
#app { display: flex; height: 100dvh; }

#sidebar {
  width: 240px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 14px;
  gap: 10px;
  flex-shrink: 0;
}
.sidebar-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  padding: 2px 4px 6px;
  font-size: 13px;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.sidebar-head button {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 16px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background .15s, color .15s;
}
.sidebar-head button:hover { background: var(--panel-2); color: var(--text); }

#projectList { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 3px; }
.project-item {
  padding: 10px 12px;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 14px;
  transition: background .12s;
}
.project-item:hover { background: var(--panel-2); }
.project-item.active { background: var(--accent); color: white; }
.project-item .dot { font-size: 10px; flex-shrink: 0; }
.project-item .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.agent-toggle { padding: 6px 2px; border-top: 1px solid var(--border); padding-top: 12px; }
.agent-toggle-label { font-size: 12px; color: var(--text-dim); display: block; margin-bottom: 6px; }
.agent-seg { display: flex; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 3px; gap: 3px; }
.agent-opt {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-dim);
  padding: 7px 0;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.agent-opt.active { background: var(--accent); color: white; }

#newProjectBtn, .logout {
  padding: 11px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: background .15s, border-color .15s;
}
#newProjectBtn:hover { background: var(--accent); border-color: var(--accent); }
.logout { background: transparent; color: var(--text-dim); font-weight: 500; }
.logout:hover { background: var(--panel-2); color: var(--danger); }

#sidebarToggle {
  display: none;
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 20;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,.3);
}
#sidebarBackdrop { display: none; }

main#termWrap { flex: 1; display: flex; flex-direction: column; min-width: 0; }
#termHeader {
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-dim);
  font-weight: 600;
}
#terminal { flex: 1; padding: 8px; overflow: hidden; background: var(--bg); }
.xterm { height: 100%; }

/* ── แถบปุ่มคีย์พิเศษ (มือถือ) ── */
#keyToolbar {
  display: none;
  gap: 6px;
  padding: 8px;
  background: var(--panel);
  border-top: 1px solid var(--border);
  overflow-x: auto;
}
#keyToolbar button {
  flex-shrink: 0;
  min-width: 44px;
  padding: 10px 4px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
}
#keyToolbar button.active { background: var(--accent); border-color: var(--accent); color: white; }
#keyToolbar button:active { background: var(--accent); }

/* ── modal โปรเจกต์ใหม่ ── */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.55); display: flex; align-items: center; justify-content: center; z-index: 30; padding: 16px; }
.modal.hidden { display: none; }
.modal-box {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 26px;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 300px;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.modal-box h2 { margin: 0 0 16px; font-size: 18px; }
.modal-box input {
  width: 100%;
  padding: 11px 13px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  margin-bottom: 8px;
  font-size: 16px;
}
.modal-box input:focus { outline: none; border-color: var(--accent); }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 10px; }
.modal-actions button {
  padding: 9px 16px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}
#newProjectCancel { background: var(--panel-2); color: var(--text); }
#newProjectCancel:hover { background: var(--border); }
#newProjectCreate { background: var(--accent); color: white; }
#newProjectCreate:hover { background: var(--accent-hover); }

/* ── มือถือ: sidebar เป็น drawer + คีย์บอร์ดเสริม ── */
@media (max-width: 700px) {
  #sidebarToggle { display: block; }
  #keyToolbar { display: flex; }
  #sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 25;
    transform: translateX(-100%);
    transition: transform .2s ease;
    width: 260px;
    box-shadow: 4px 0 24px rgba(0,0,0,.4);
  }
  #sidebar.open { transform: translateX(0); }
  #sidebar.open ~ #sidebarBackdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 24;
  }
  #termHeader { padding-left: 52px; }
  #terminal { padding: 4px; }
}