/* ============================================================
   X 下载器 · Docker 版  ·  现代重写
   设计语言：浅色工作台 + 深色终端 + 精致细节
   ============================================================ */

:root {
  /* 表面 */
  --bg:           #f3f5f8;
  --bg-grad:      radial-gradient(1200px 600px at 80% -10%, #e6f1fb 0%, transparent 60%),
                  radial-gradient(900px 500px at -10% 110%, #eef0f4 0%, transparent 55%),
                  #f3f5f8;
  --card:         #ffffff;
  --card-soft:    #fafbfc;
  --line:         #e6e8ec;
  --line-strong:  #d4d7dd;

  /* 文字 */
  --text:         #0f1419;
  --muted:        #536471;
  --faint:        #8b98a5;

  /* 强调色（X 蓝） */
  --accent:       #1d9bf0;
  --accent-dark:  #1a8cd8;
  --accent-soft:  #e7f4fe;
  --accent-ring:  rgba(29,155,240,.18);

  /* 语义色 */
  --err:          #d1242f;
  --err-soft:     #fff0f1;
  --warn:         #b06a00;
  --warn-soft:    #fff8e5;
  --ok:           #1a7f37;
  --ok-soft:      #e8f5ee;

  /* 终端 */
  --term-bg:      #0d1117;
  --term-fg:      #c9d1d9;
  --term-meta:    #79c0ff;
  --term-warn:    #e3b341;
  --term-err:     #ff7b72;
  --term-ok:      #7ee787;

  /* 阴影 */
  --shadow-sm:    0 1px 2px rgba(15,20,25,.04), 0 1px 1px rgba(15,20,25,.02);
  --shadow-md:    0 4px 14px rgba(15,20,25,.06), 0 1px 3px rgba(15,20,25,.04);
  --shadow-lg:    0 12px 32px rgba(15,20,25,.10), 0 2px 6px rgba(15,20,25,.04);

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 18px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg-grad);
  background-attachment: fixed;
  color: var(--text);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI Variable",
        "Segoe UI", "Microsoft YaHei UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================================ 顶栏 */

.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 16px;
  padding: 14px 28px;
  background: rgba(255,255,255,.78);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid; place-items: center;
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, #0f1419 0%, #1d9bf0 140%);
  color: #fff; font-weight: 800; font-size: 16px; letter-spacing: -.02em;
  box-shadow: 0 4px 12px rgba(29,155,240,.30);
}
.brand-text h1 { margin: 0; font-size: 15px; font-weight: 650; letter-spacing: -.01em; }
.brand-text p  { margin: 0; font-size: 11px; color: var(--faint); letter-spacing: .02em; }

.user-pill {
  margin-left: auto;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 4px 6px 4px 8px;
  background: var(--card-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.avatar {
  display: grid; place-items: center;
  width: 26px; height: 26px; border-radius: 50%;
  background: linear-gradient(135deg, #1d9bf0, #0f1419);
  color: #fff; font-size: 12px; font-weight: 700;
}
.user-name { font-size: 13px; font-weight: 550; }
.logout-link {
  margin-left: 4px; padding: 4px 12px;
  font-size: 12px; color: var(--muted); text-decoration: none;
  border-left: 1px solid var(--line);
}
.logout-link:hover { color: var(--err); }

/* ============================================================ 主布局 */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 22px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 28px 60px;
  align-items: start;
}
.col-left  { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.col-right { position: sticky; top: 88px; min-width: 0; }

/* ============================================================ 卡片 */

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.card-head {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--card-soft) 0%, var(--card) 100%);
}
.card-head h2 {
  margin: 0; font-size: 13px; font-weight: 600;
  color: var(--text); letter-spacing: -.005em;
}
.card-head .spacer { flex: 1; }
.card-body { padding: 18px; }

.step {
  display: inline-grid; place-items: center;
  width: 22px; height: 22px; border-radius: 7px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #fff; font-size: 11px; font-weight: 700;
  box-shadow: 0 2px 6px rgba(29,155,240,.30);
}

/* ============================================================ 表单 */

.field { margin-bottom: 16px; }
.field:last-child { margin-bottom: 0; }
.field > label {
  display: block;
  font-size: 12px; font-weight: 550;
  color: var(--muted);
  margin-bottom: 6px;
  letter-spacing: .01em;
}

.grid-2 {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
}

input[type=text], input[type=password], select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font: inherit; color: var(--text);
  background: var(--card);
  transition: border-color .15s, box-shadow .15s, background .15s;
}
input::placeholder { color: var(--faint); }
input:hover, select:hover { border-color: var(--line-strong); }
input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
  background: #fff;
}
select {
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5l3 3 3-3' stroke='%23536471' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}

.input-group {
  display: flex; gap: 6px; align-items: stretch;
}
.input-group input { flex: 1; min-width: 0; }
.input-group button { white-space: nowrap; }

.opts-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 14px;
  padding: 12px 14px;
  background: var(--card-soft);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.check {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13px; color: var(--text); cursor: pointer;
  user-select: none;
}
.check input[type=checkbox] {
  appearance: none; -webkit-appearance: none;
  width: 16px; height: 16px;
  border: 1.5px solid var(--line-strong);
  border-radius: 4px;
  background: #fff;
  cursor: pointer;
  position: relative;
  transition: background .15s, border-color .15s;
}
.check input[type=checkbox]:checked {
  background: var(--accent);
  border-color: var(--accent);
}
.check input[type=checkbox]:checked::after {
  content: "";
  position: absolute;
  left: 4.5px; top: 1.5px;
  width: 4px; height: 8px;
  border: 2px solid #fff;
  border-top: 0; border-left: 0;
  transform: rotate(45deg);
}
.limit-check { margin-left: auto; }
input.tiny {
  width: 80px; padding: 6px 10px;
  margin-left: 8px;
}

.hint {
  margin: 6px 0 0;
  font-size: 12px; color: var(--faint);
  line-height: 1.55;
}
.hint code {
  background: var(--card-soft);
  border: 1px solid var(--line);
  padding: 1px 6px; border-radius: 4px;
  font: 11px/1.4 "Cascadia Mono", Consolas, monospace;
  color: var(--muted);
}
.hint.bad   { color: var(--err); }
.hint.good  { color: var(--ok); }
.hint.warn  { color: var(--warn); }

/* ============================================================ 按钮 */

button {
  padding: 8px 16px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  font: inherit; font-weight: 500;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .05s, box-shadow .15s;
}
button:hover:not(:disabled) {
  border-color: var(--line-strong);
  background: var(--card-soft);
}
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { opacity: .5; cursor: not-allowed; }

button.sm { padding: 5px 10px; font-size: 12px; }

button.primary, .btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border-color: transparent;
  color: #fff;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(29,155,240,.30), inset 0 1px 0 rgba(255,255,255,.18);
}
button.primary:hover:not(:disabled), .btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--accent-dark) 0%, #1577b8 100%);
  border-color: transparent;
}

.btn-danger {
  background: var(--card);
  border-color: #f3b0b6;
  color: var(--err);
  font-weight: 550;
}
.btn-danger:hover:not(:disabled) {
  background: var(--err-soft);
  border-color: var(--err);
}

.btn-ghost, button.ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--muted);
  font-weight: 500;
}
.btn-ghost:hover:not(:disabled), button.ghost:hover:not(:disabled) {
  background: var(--card-soft);
  color: var(--text);
  border-color: var(--line-strong);
}

/* ============================================================ 操作栏 */

.action-bar {
  display: flex; gap: 10px; align-items: center;
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
}
.action-bar .spacer { flex: 1; }
.action-bar button { padding: 9px 22px; }

.status {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--muted);
  padding: 4px 12px;
  background: var(--card-soft);
  border-radius: 999px;
  border: 1px solid var(--line);
}
.status::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--faint);
}
.status.busy { color: var(--accent); border-color: var(--accent-soft); background: var(--accent-soft); }
.status.busy::before { background: var(--accent); animation: pulse 1.4s ease-in-out infinite; }
.status:empty { display: none; }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(.85); }
}

/* ============================================================ 日志卡 */

.log-card { display: flex; flex-direction: column; }
.log-card .card-head { padding: 12px 18px; }
.log-body { padding: 14px; }

#log {
  margin: 0;
  padding: 16px;
  background: var(--term-bg);
  color: var(--term-fg);
  border-radius: var(--r-md);
  border: 1px solid #1e2530;
  height: calc(100vh - 220px);
  min-height: 380px;
  overflow-y: auto;
  font: 12.5px/1.7 "Cascadia Mono", "JetBrains Mono", "Fira Code", Consolas, "Courier New", monospace;
  white-space: pre-wrap; word-break: break-all;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.03);
}
#log .err  { color: var(--term-err); }
#log .warn { color: var(--term-warn); }
#log .ok   { color: var(--term-ok); }
#log .meta { color: var(--term-meta); }

/* 终端滚动条 */
#log::-webkit-scrollbar { width: 10px; }
#log::-webkit-scrollbar-track { background: transparent; }
#log::-webkit-scrollbar-thumb { background: #2a323c; border-radius: 6px; border: 2px solid var(--term-bg); }
#log::-webkit-scrollbar-thumb:hover { background: #3a4451; }

/* ============================================================ 弹窗 */

.modal {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(15,20,25,.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: grid; place-items: center;
  padding: 24px;
  animation: fade .18s ease-out;
}
.modal[hidden] { display: none; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

.modal-box {
  background: var(--card);
  border-radius: var(--r-xl);
  padding: 28px;
  max-width: 540px; width: 100%;
  max-height: 86vh; overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: pop .22s cubic-bezier(.34, 1.4, .64, 1);
}
@keyframes pop {
  from { opacity: 0; transform: translateY(8px) scale(.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-box h2 { margin: 0 0 14px; font-size: 17px; letter-spacing: -.01em; }
.modal-box p  { margin: 0 0 12px; color: var(--muted); font-size: 13px; }
.modal-box ol { padding-left: 22px; margin: 0 0 16px; }
.modal-box li { margin-bottom: 8px; font-size: 13px; line-height: 1.65; }
.modal-box code, code.mono {
  background: var(--card-soft);
  border: 1px solid var(--line);
  padding: 2px 6px; border-radius: 4px;
  font: 12px/1.4 "Cascadia Mono", Consolas, monospace;
  color: var(--text);
}
kbd {
  background: var(--card-soft);
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 1px 6px;
  font: 11px/1.5 "Cascadia Mono", Consolas, monospace;
  color: var(--text);
}
.warn-text {
  background: var(--warn-soft);
  border-left: 3px solid #d4a72c;
  padding: 11px 14px;
  border-radius: var(--r-sm);
  font-size: 13px;
  color: var(--warn);
}
.modal-box button.primary {
  width: 100%;
  padding: 10px;
  margin-top: 8px;
}

/* ============================================================ 登录页 */

.centered {
  display: grid; place-items: center;
  min-height: 100vh; padding: 24px;
}
.login {
  max-width: 380px; width: 100%;
  padding: 32px 28px 28px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  text-align: left;
}
.login-brand {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 18px;
}
.login-brand .brand-mark { width: 40px; height: 40px; font-size: 18px; border-radius: 12px; }
.login h1 { margin: 0; font-size: 17px; letter-spacing: -.01em; }
.login .muted { margin: 2px 0 0; font-size: 12px; }

.field { display: block; margin: 14px 0; }
.field span {
  display: block; font-size: 12px; font-weight: 550;
  color: var(--muted); margin-bottom: 6px;
}
.field input { width: 100%; }

.remember {
  font-size: 13px; color: var(--muted);
  display: inline-flex; align-items: center; gap: 8px;
  margin-bottom: 14px; cursor: pointer;
}

.login button[type=submit] { width: 100%; padding: 11px; margin-top: 4px; }

.forgot {
  margin-top: 18px; padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12px; color: var(--faint);
  line-height: 1.6;
}
.forgot code { font-size: 11px; word-break: break-all; }

.error {
  color: var(--err); font-size: 13px;
  margin: 0 0 14px;
  background: var(--err-soft);
  border-left: 3px solid var(--err);
  padding: 9px 12px;
  border-radius: var(--r-sm);
}

/* ============================================================ 响应式 */

@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .col-right { position: static; }
  #log { height: 440px; min-height: 0; }
}

@media (max-width: 640px) {
  .topbar { padding: 12px 16px; }
  .brand-text p { display: none; }
  .user-name { display: none; }
  .layout { padding: 16px 14px 40px; gap: 14px; }
  .grid-2 { grid-template-columns: 1fr; }
  .limit-check { margin-left: 0; width: 100%; }
  .opts-row { gap: 10px; }
  .action-bar { flex-wrap: wrap; }
  .action-bar .spacer { display: none; }
  .modal-box { padding: 22px 18px; }
}