:root {
  --bg: #0b0b0b;
  --fg: #e0e0e0;
  --dim: #888;
  --accent: #7fdbca;
  --accent-dim: #4a8d83;
  --border: #2a2a2a;
  --border-strong: #444;
  --err: #ff6b6b;
  --warn: #ffd166;
  --hover-bg: #1a1a1a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 16px;
}

.hidden { display: none !important; }
.dim { color: var(--dim); }
.err { color: var(--err); min-height: 1em; font-size: 14px; margin-top: 8px; }

.brand { color: var(--accent); font-weight: 600; letter-spacing: 0.5px; }

/* ---------- auth screen ---------- */
.auth-screen { display: flex; align-items: center; justify-content: center; height: 100%; }
.auth-box {
  width: 440px;
  border: 1px solid var(--border);
  padding: 32px;
  background: #0e0e0e;
}
.auth-box .brand { font-size: 32px; margin-bottom: 24px; }
.auth-box form { display: flex; flex-direction: column; gap: 12px; }
.auth-box input,
.auth-box button {
  background: #050505;
  color: var(--fg);
  border: 1px solid var(--border-strong);
  padding: 14px 14px;
  font-family: inherit;
  font-size: 16px;
  outline: none;
}
.auth-box input:focus { border-color: var(--accent); }
.auth-box button {
  cursor: pointer;
  color: var(--accent);
  font-weight: 600;
  border-color: var(--accent-dim);
}
.auth-box button:hover { background: #131313; border-color: var(--accent); }
.auth-box .row { display: flex; justify-content: space-between; font-size: 14px; }
.auth-box a { color: var(--dim); text-decoration: none; }
.auth-box a:hover { color: var(--accent); }

/* ---------- terminal app ---------- */
#app { display: flex; flex-direction: column; height: 100%; }
#topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 48px;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
  background: #0e0e0e;
  font-size: 15px;
  flex-shrink: 0;
}
#topbar .brand { font-size: 20px; }
#topbar .sep { color: var(--dim); }
#topbar .spacer { flex: 1; }
#topbar #who { color: var(--fg); }
#topbar #usage, #topbar #storage { color: var(--dim); font-variant-numeric: tabular-nums; }
#topbar button, #topbar .btn-link {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border-strong);
  padding: 7px 14px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  border-radius: 2px;
  transition: all 0.1s;
}
#topbar button:hover, #topbar .btn-link:hover {
  background: var(--hover-bg);
  border-color: var(--accent);
  color: var(--accent);
}
#topbar #logout:hover { color: var(--err); border-color: var(--err); }
#topbar .btn-primary {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}
#topbar .btn-primary:hover { background: #aaf0e3; color: #000; border-color: #aaf0e3; }

#term {
  flex: 1;
  padding: 8px;
  overflow: hidden;
}
.xterm, .xterm-viewport, .xterm-screen { background: var(--bg) !important; }

/* ---------- modals + toasts ---------- */
.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.modal-box {
  background: #0e0e0e;
  border: 1px solid var(--border-strong);
  width: min(560px, 92vw);
  max-height: 80vh;
  display: flex; flex-direction: column;
}
.modal-box-wide { width: min(900px, 92vw); }
.modal-head {
  display: flex; align-items: center; gap: 10px;
  border-bottom: 1px solid var(--border);
  padding: 14px 18px;
  font-size: 16px;
}
.modal-head .modal-title { color: var(--accent); font-weight: 600; }
.modal-head .modal-close {
  background: transparent; color: var(--dim);
  border: 1px solid var(--border-strong);
  padding: 4px 12px; font-size: 18px; line-height: 1;
  cursor: pointer; border-radius: 2px;
}
.modal-head .modal-close:hover { color: var(--err); border-color: var(--err); }
.modal-head .spacer { flex: 1; }
.modal-body {
  overflow-y: auto;
  padding: 14px 18px;
  font-size: 15px;
}
.modal-foot {
  border-top: 1px solid var(--border);
  padding: 12px 18px;
  font-size: 13px;
}
.modal-foot code {
  background: #1a1a1a; padding: 1px 6px; border-radius: 2px;
  color: var(--warn); font-size: 12px;
}

.breadcrumb {
  font-size: 14px; color: var(--dim);
  font-family: inherit;
}
.breadcrumb .crumb {
  color: var(--accent); cursor: pointer; text-decoration: none;
}
.breadcrumb .crumb:hover { text-decoration: underline; }

.btn-primary {
  background: var(--accent); color: #000;
  border: 1px solid var(--accent);
  padding: 9px 16px; font-family: inherit; font-size: 14px; font-weight: 600;
  cursor: pointer; border-radius: 2px;
}
.btn-primary:hover { background: #aaf0e3; border-color: #aaf0e3; }
.btn-primary:disabled { background: var(--border); color: var(--dim); cursor: not-allowed; }

/* ---------- file browser ---------- */
.file-list .file-row {
  display: flex; align-items: center; gap: 14px;
  padding: 10px 12px;
  cursor: pointer;
  border-bottom: 1px solid #161616;
  font-size: 15px;
  user-select: none;
}
.file-list .file-row:hover { background: var(--hover-bg); }
.file-list .file-row.dir:hover { color: var(--accent); }
.file-list .file-row.file:hover .name { color: var(--accent); }
.file-list .file-row .ico { width: 1.4em; text-align: center; font-size: 16px; }
.file-list .file-row .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-list .file-row .size { color: var(--dim); font-variant-numeric: tabular-nums; min-width: 80px; text-align: right; }
.file-list .empty { padding: 36px 12px; text-align: center; color: var(--dim); font-size: 14px; }

.ctx-menu {
  position: fixed; z-index: 200;
  background: #131313; border: 1px solid var(--border-strong);
  font-size: 14px; min-width: 160px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.5);
}
.ctx-item { padding: 8px 14px; cursor: pointer; }
.ctx-item:hover { background: var(--hover-bg); color: var(--accent); }

/* ---------- top-up packs ---------- */
.pack-card {
  border: 1px solid var(--border-strong);
  padding: 18px;
  margin-bottom: 14px;
  display: flex; flex-direction: column; gap: 8px;
}
.pack-card:hover { border-color: var(--accent-dim); }
.pack-name { font-size: 17px; font-weight: 600; color: var(--accent); }
.pack-price { font-size: 22px; font-weight: 600; }
.pack-desc { color: var(--dim); font-size: 14px; margin-bottom: 6px; }
.pack-card .btn-primary { align-self: flex-start; }

/* ---------- upload toast ---------- */
.toast {
  position: fixed; right: 20px; bottom: 20px;
  background: #131313; border: 1px solid var(--border-strong);
  padding: 14px 18px; min-width: 320px;
  font-size: 14px; z-index: 200;
  box-shadow: 0 4px 14px rgba(0,0,0,0.5);
}
.toast progress {
  display: block; width: 100%; height: 8px;
  appearance: none; -webkit-appearance: none;
  margin-top: 8px;
}
.toast progress::-webkit-progress-bar { background: #050505; }
.toast progress::-webkit-progress-value { background: var(--accent); }
.toast progress::-moz-progress-bar { background: var(--accent); }

/* ---------- billing landing page (after returning from ECPay) ---------- */
#billing-status {
  display: flex; flex-direction: column; align-items: center; gap: 18px;
  padding: 60px 20px;
}
#billing-status .icon { font-size: 64px; }
#billing-status .msg { font-size: 22px; }
#billing-status .detail { color: var(--dim); font-size: 15px; }
#billing-status .btn-primary { margin-top: 14px; }

/* ---------- admin page ---------- */
#admin-main { padding: 22px 28px; }
.admin-toolbar { display: flex; align-items: center; margin-bottom: 14px; font-size: 14px; }
.admin-toolbar .spacer { flex: 1; }
#users-table { width: 100%; border-collapse: collapse; font-size: 14px; }
#users-table th, #users-table td {
  text-align: left;
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
  vertical-align: middle;
}
#users-table th { color: var(--dim); font-weight: 500; font-size: 13px; }
#users-table input[type=number] {
  background: #050505; color: var(--fg);
  border: 1px solid var(--border-strong); padding: 4px 8px;
  width: 100px; font-family: inherit; font-size: 14px;
}
#users-table .state-running { color: var(--accent); }
#users-table .state-none, #users-table .state-exited { color: var(--dim); }
#users-table td.actions button {
  background: transparent; color: var(--fg);
  border: 1px solid var(--border-strong); padding: 5px 10px;
  font-size: 13px; cursor: pointer; margin-right: 6px;
}
#users-table td.actions .btn-delete:hover { color: var(--err); border-color: var(--err); }
#users-table td.actions .btn-kick:hover { color: var(--accent); border-color: var(--accent); }