/* ============================================================
   NEXUS AUTH — 与控制台同源的配色 / 字体 / 动效
   ============================================================ */
:root[data-theme="dark"] {
  color-scheme: dark;
  --page:        #0a0d12;
  --surface:     #10141b;
  --surface-2:   #151a23;
  --elevated:    #1b2230;
  --hairline:    #1d2532;
  --hairline-2:  #2a3547;
  --ink:         #f0f4f9;
  --ink-2:       #9aa7ba;
  --ink-3:       #5c6b80;
  --accent:      #3987e5;
  --accent-2:    #d55181;
  --accent-soft: rgba(57, 135, 229, 0.14);
  --accent2-soft:rgba(213, 81, 129, 0.12);
  --good-text:   #2fbf4f;
  --bad-text:    #ef8585;
  --grid-line:   rgba(255, 255, 255, 0.035);
  --shadow-pop:  0 24px 60px rgba(0, 0, 0, 0.55);
}
:root[data-theme="light"] {
  color-scheme: light;
  --page:        #eff0ee;
  --surface:     #fafaf8;
  --surface-2:   #f3f3f0;
  --elevated:    #ffffff;
  --hairline:    #e0dfd8;
  --hairline-2:  #cbcac1;
  --ink:         #0d0e10;
  --ink-2:       #52565e;
  --ink-3:       #8f938f;
  --accent:      #2a78d6;
  --accent-2:    #d55181;
  --accent-soft: rgba(42, 120, 214, 0.10);
  --accent2-soft:rgba(213, 81, 129, 0.10);
  --good-text:   #006300;
  --bad-text:    #b32222;
  --grid-line:   rgba(13, 14, 16, 0.045);
  --shadow-pop:  0 24px 60px rgba(30, 30, 28, 0.16);
}
:root {
  --mono: "JetBrains Mono", "Cascadia Code", ui-monospace, Consolas, monospace;
  --sans: "Space Grotesk", system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  background: var(--page);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.55;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  transition: background 0.45s var(--ease-out), color 0.45s var(--ease-out);
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 90% at 50% 0%, #000 30%, transparent 100%);
}
body::after {
  content: ""; position: fixed; z-index: 0; pointer-events: none;
  width: 70vw; height: 50vh; left: -12vw; top: -22vh; filter: blur(90px); opacity: 0.5;
  background:
    radial-gradient(closest-side, var(--accent-soft), transparent 70%),
    radial-gradient(closest-side at 75% 60%, var(--accent2-soft), transparent 70%);
}
::selection { background: var(--accent); color: var(--page); }

/* theme toggle */
.theme-toggle {
  position: fixed; top: 18px; right: 18px; z-index: 5;
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--hairline-2); background: var(--surface);
  color: var(--ink-2); cursor: pointer;
  display: grid; place-items: center;
  transition: all 0.3s var(--ease-spring);
}
.theme-toggle svg { width: 17px; height: 17px; transition: transform 0.5s var(--ease-spring), opacity 0.3s; }
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 40px var(--accent-soft); transform: scale(1.06); }
.theme-toggle:active { transform: scale(0.94); }
.theme-toggle .ico-sun, .theme-toggle .ico-moon { position: absolute; display: inline-flex; }
.theme-toggle .ico-sun { transform: translateY(140%) rotate(90deg); opacity: 0; }
.theme-toggle .ico-moon { transform: none; opacity: 1; }
:root[data-theme="light"] .theme-toggle .ico-sun { transform: none; opacity: 1; }
:root[data-theme="light"] .theme-toggle .ico-moon { transform: translateY(-140%) rotate(-90deg); opacity: 0; }

.wrap { width: min(400px, 92vw); position: relative; z-index: 1; }
.card {
  background: var(--surface); border: 1px solid var(--hairline-2);
  border-radius: 14px; box-shadow: var(--shadow-pop);
  overflow: hidden; animation: riseIn 0.5s var(--ease-out);
}
@keyframes riseIn { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.stripe { height: 2px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.card-body { padding: 28px 28px 22px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .mark { width: 36px; height: 36px; display: grid; place-items: center; color: var(--accent); flex-shrink: 0; }
.brand .mark svg { width: 27px; height: 27px; }
.wordmark { font-size: 17px; font-weight: 700; letter-spacing: -0.02em; display: flex; align-items: baseline; gap: 2px; }
.wordmark em { font-style: normal; color: var(--accent-2); }
.wordmark small { font-family: var(--mono); font-size: 10px; font-weight: 400; color: var(--ink-3); margin-left: 10px; letter-spacing: 0.18em; text-transform: uppercase; }
.sub { margin-top: 3px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.26em; text-transform: uppercase; color: var(--ink-3); }

.field { margin-top: 24px; }
.field label {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: 6px;
}
.control {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface-2); border: 1px solid var(--hairline);
  border-radius: 8px; padding: 0 6px 0 12px;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.3s;
}
.control:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.control > svg { width: 14px; height: 14px; color: var(--ink-3); flex-shrink: 0; }
.control input {
  flex: 1; min-width: 0; padding: 11px 0;
  background: transparent; border: none; outline: none;
  color: var(--ink); font-family: var(--mono); font-size: 13px; letter-spacing: 0.06em;
}
.control input::placeholder { color: var(--ink-3); opacity: 0.65; letter-spacing: 0; }
.eye-btn {
  background: transparent; border: none; color: var(--ink-3); cursor: pointer;
  padding: 7px; display: grid; place-items: center; border-radius: 6px; flex-shrink: 0;
  transition: color 0.2s;
}
.eye-btn:hover { color: var(--accent); }
.eye-btn svg { width: 15px; height: 15px; }

.remember {
  margin-top: 15px; display: flex; align-items: center; gap: 9px;
  cursor: pointer; user-select: none;
}
.remember input { width: 15px; height: 15px; accent-color: var(--accent); cursor: pointer; flex-shrink: 0; }
.remember .t { font-size: 12.5px; color: var(--ink-2); }
.remember .t b { color: var(--ink); font-weight: 600; }

.btn {
  width: 100%; margin-top: 20px;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 12px 20px; border-radius: 8px; border: none;
  font-family: var(--sans); font-size: 13px; font-weight: 600; letter-spacing: 0.02em;
  cursor: pointer; transition: transform 0.25s var(--ease-spring), box-shadow 0.25s, opacity 0.2s;
}
.btn svg { width: 15px; height: 15px; transition: transform 0.3s var(--ease-spring); }
.btn:active:not(:disabled) { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-run { background: var(--ink); color: var(--page); }
.btn-run:hover:not(:disabled) { box-shadow: 0 10px 30px rgba(0,0,0,0.3); transform: translateY(-1px); }
.btn-run:hover:not(:disabled) svg { transform: translateX(3px); }
:root[data-theme="light"] .btn-run { background: var(--accent); color: #fff; }
:root[data-theme="light"] .btn-run:hover:not(:disabled) { box-shadow: 0 10px 26px rgba(42, 120, 214, 0.35); }

.msg { margin-top: 12px; min-height: 18px; font-family: var(--mono); font-size: 11px; line-height: 1.6; color: var(--bad-text); display: flex; gap: 7px; align-items: flex-start; }
.msg svg { width: 13px; height: 13px; flex-shrink: 0; margin-top: 2px; }

.hint {
  margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--hairline);
  font-family: var(--mono); font-size: 10.5px; line-height: 1.85; color: var(--ink-3);
}
.hint code { color: var(--ink-2); }
.shake { animation: shake 0.4s; }
@keyframes shake { 0%, 100% { transform: none; } 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }

/* 未启用授权时的面板 */
.ok-panel { display: none; text-align: center; padding: 24px 0 6px; }
.ok-panel .ico { width: 44px; height: 44px; margin: 0 auto; border-radius: 12px; display: grid; place-items: center; color: var(--good-text); border: 1px solid color-mix(in srgb, var(--good-text) 40%, transparent); background: color-mix(in srgb, var(--good-text) 10%, transparent); }
.ok-panel .ico svg { width: 20px; height: 20px; }
.ok-panel .tt { margin-top: 12px; font-size: 14px; font-weight: 700; }
.ok-panel .dd { margin-top: 4px; font-size: 12px; color: var(--ink-3); line-height: 1.7; }
.ok-panel .btn { width: auto; margin: 18px auto 0; padding: 11px 34px; }

.enter { opacity: 0; transform: translateY(10px); animation: enter 0.6s var(--ease-out) 0.15s forwards; }
@keyframes enter { to { opacity: 1; transform: none; } }

@media (max-width: 480px) {
  body { overflow: auto; }
  .card-body { padding: 22px 20px 18px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}