/* ============================================================
   EasyData · 独立页（登录 / 403）样式
   ============================================================ */

.center-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  padding: var(--space-6);
}

.login-card {
  width: 400px; max-width: 100%;
  background: var(--panel);
  background: color-mix(in srgb, var(--panel) 78%, transparent);
  -webkit-backdrop-filter: blur(16px) saturate(1.15);
  backdrop-filter: blur(16px) saturate(1.15);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow);
  padding: 32px;
  position: relative;
  overflow: hidden;
}

/* 顶部光束扫过 */
.login-card::before {
  content: ""; position: absolute; top: 0; left: 0; height: 2px; width: 46%;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: lgBeam 4s ease-in-out infinite;
  z-index: 1;
}
@keyframes lgBeam {
  0% { transform: translateX(-110%); }
  60%, 100% { transform: translateX(260%); }
}

/* HUD 四角边角括号 */
.login-card::after {
  content: ""; position: absolute; inset: 0;
  border-radius: var(--radius-l);
  pointer-events: none;
  background:
    linear-gradient(var(--accent), var(--accent)) left top / 16px 2px,
    linear-gradient(var(--accent), var(--accent)) left top / 2px 16px,
    linear-gradient(var(--accent), var(--accent)) right top / 16px 2px,
    linear-gradient(var(--accent), var(--accent)) right top / 2px 16px,
    linear-gradient(var(--accent), var(--accent)) left bottom / 16px 2px,
    linear-gradient(var(--accent), var(--accent)) left bottom / 2px 16px,
    linear-gradient(var(--accent), var(--accent)) right bottom / 16px 2px,
    linear-gradient(var(--accent), var(--accent)) right bottom / 2px 16px;
  background-repeat: no-repeat;
  opacity: .65;
}

.login-head { text-align: center; margin-bottom: 18px; }
/* ---- SVG 动效 Logo（类名 llm-*，避开 ui.js 品牌替换与背景 lg-* 类） ---- */
.login-mark { width: 56px; margin: 0 auto 10px; }
.login-mark svg { width: 100%; height: auto; overflow: visible; }

.llm-grad-a { stop-color: var(--accent-strong); stop-opacity: 1; }
.llm-grad-b { stop-color: var(--accent); stop-opacity: .95; }
html[data-theme="dark"] .llm-grad-a { stop-color: var(--accent); }
html[data-theme="dark"] .llm-grad-b { stop-color: var(--accent-strong); }

.llm-ring {
  fill: none; stroke: var(--accent); stroke-width: 1.4;
  stroke-dasharray: 5 8; opacity: .4;
}
.llm-sat { fill: var(--accent-strong); filter: drop-shadow(0 0 4px var(--accent)); }
html[data-theme="dark"] .llm-sat { fill: var(--accent); }

.llm-hex {
  fill: var(--accent-weak); stroke: url(#llmGrad); stroke-width: 1.6;
  animation: llmHex 5s ease-in-out infinite;
}
@keyframes llmHex { 0%, 100% { opacity: .8; } 50% { opacity: 1; } }

.llm-bar {
  fill: url(#llmGrad);
  transform-box: fill-box; transform-origin: 50% 100%;
  animation: llmBar 2.6s ease-in-out infinite;
}
.llm-b2 { animation-delay: .35s; }
.llm-b3 { animation-delay: .7s; }
@keyframes llmBar {
  0%, 100% { transform: scaleY(1); opacity: .8; }
  50%      { transform: scaleY(1.14); opacity: 1; }
}

.llm-trend {
  fill: none; stroke: var(--accent-text); stroke-width: 2.4;
  stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: 60; stroke-dashoffset: 60;
  animation: llmTrend 4.2s ease-in-out infinite;
}
@keyframes llmTrend {
  0%   { stroke-dashoffset: 60; opacity: 0; }
  8%   { opacity: 1; }
  55%  { stroke-dashoffset: 0; opacity: 1; }
  86%  { stroke-dashoffset: 0; opacity: 1; }
  100% { stroke-dashoffset: 0; opacity: 0; }
}

.llm-trend-dot {
  fill: var(--accent-text); filter: drop-shadow(0 0 5px var(--accent));
  transform-box: fill-box; transform-origin: center;
  animation: llmDot 4.2s ease-in-out infinite;
}
@keyframes llmDot {
  0%, 40% { opacity: 0; transform: scale(.4); }
  55%     { opacity: 1; transform: scale(1.15); }
  70%     { transform: scale(1); }
  86%     { opacity: 1; }
  100%    { opacity: 0; }
}
.login-title { font-size: 20px; font-weight: 700; }

/* 表单级错误：平滑展开/收起，避免卡片高度突变 */
.login-error {
  /* 预留空间常驻：错误出现时表单元素零位移（38px = 单行文案 + 内边距 + 边框） */
  min-height: 38px; margin-bottom: var(--space-4);
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  background: transparent;
  color: var(--bad);
  font-size: 12.5px;
  overflow: hidden;
}
.login-error.show {
  border-color: var(--bad);
  background: var(--bad-weak);
}

/* 字段级错误（登录页作用域）：预留空间常驻，出现时零位移 */
.login-card .field-error { min-height: 18px; }

/* 验证码行：低频状态，出现时平滑展开（不常驻预留，保持闲置构图紧凑）。
   横向 3px 内边距 + 负外边距：给输入框聚焦环留出空间，避免被 overflow 裁切 */
.login-card #captchaRow {
  max-height: 0; opacity: 0; overflow: hidden;
  margin: 0 -3px 0; padding: 0 3px;
  transition: max-height .28s ease, opacity .22s ease, margin-bottom .28s ease;
}
.login-card #captchaRow.show {
  max-height: 120px; opacity: 1; margin-bottom: var(--space-4);
}

.key-input-wrap { position: relative; }
.key-input-wrap .input { padding-right: 52px; }
.key-toggle {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  border: none; background: transparent;
  color: var(--text-muted); font-size: 12px; font-family: inherit;
  cursor: pointer; padding: 2px 6px;
  border-radius: var(--radius-s);
}
.key-toggle:hover { color: var(--text); background: var(--panel-hover); }

/* ---- 403 ---- */
.card-403 { text-align: center; padding: 40px 32px; }
.code-403 {
  font-family: var(--font-mono);
  font-size: 52px; font-weight: 700;
  color: var(--accent-text);
  letter-spacing: 4px;
}
.t403 { font-size: 15px; font-weight: 600; margin-top: 8px; }
.sub403 { font-size: 12.5px; color: var(--text-muted); margin-top: 6px; }
.btn-row { display: flex; gap: var(--space-2); justify-content: center; margin-top: 22px; }

/* ============================================================
   SVG 动态科技背景（login-bg）
   全部颜色走 CSS 变量 → 浅色/深色主题自动适配
   ============================================================ */
.login-bg {
  position: fixed; inset: 0; z-index: 0;
  overflow: hidden; pointer-events: none;
}
.login-bg svg {
  width: 100%; height: 100%;
  transform: translate3d(var(--lgx, 0px), var(--lgy, 0px), 0) scale(1.05);
  will-change: transform;
}
/* 背景层在卡片之下 */
.center-page > .login-card { z-index: 1; }

/* ---- 深色主题微调：提高卡片表面分离度与描边可见性 ---- */
html[data-theme="dark"] .login-card {
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  border-color: rgba(231, 213, 188, 0.18);
}

/* ---- 主题切换入口（固定右上，悬浮于背景之上） ---- */
.login-theme {
  position: fixed; top: 16px; right: 20px; z-index: 2;
  font-size: 16px;
  background: var(--panel);
  background: color-mix(in srgb, var(--panel) 55%, transparent);
  border-color: var(--border);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

/* ---- 主题化描边/填充 ---- */
.lg-grid { opacity: .55; }
html[data-theme="dark"] .lg-grid { opacity: .85; }
.lg-grid-line { stroke: var(--grid-line); stroke-width: 1; }

.lg-glow-core { stop-color: var(--accent); stop-opacity: .14; }
.lg-glow-edge { stop-color: var(--accent); stop-opacity: 0; }
html[data-theme="dark"] .lg-glow-core { stop-opacity: .22; }
.lg-horizon { opacity: .6; }
html[data-theme="dark"] .lg-horizon { opacity: .85; }

.lg-scan-fade { stop-color: var(--accent); stop-opacity: 0; }
.lg-scan-core { stop-color: var(--accent); stop-opacity: .08; }
html[data-theme="dark"] .lg-scan-core { stop-opacity: .12; }

/* ---- 光斑漂移 ---- */
.lg-orb-1 { animation: lgDrift 18s ease-in-out infinite alternate; }
.lg-orb-2 { animation: lgDrift 24s ease-in-out infinite alternate-reverse; }
@keyframes lgDrift {
  from { transform: translate(0, 0); }
  to   { transform: translate(-38px, 24px); }
}

/* ---- 雷达 ---- */
.lg-ring  { fill: none; stroke: var(--accent); opacity: .26; }
.lg-cross { stroke: var(--accent); stroke-width: 1; opacity: .16; }
.lg-sweep-fill { fill: var(--accent); opacity: .12; }
.lg-blip { fill: var(--accent-strong); animation: lgBlip 2.8s ease-in-out infinite; }
html[data-theme="dark"] .lg-blip { fill: var(--accent); }
.lg-blip-d1 { animation-delay: 1.4s; }
@keyframes lgBlip {
  0%, 100% { opacity: .15; }
  50%      { opacity: .95; }
}

/* ---- HUD 十字刻度 ---- */
.lg-tick { stroke: var(--accent); stroke-width: 1.4; opacity: .3; animation: lgBlip 4s ease-in-out infinite; }
.lg-tick2 { animation-delay: 1.2s; }
.lg-tick3 { animation-delay: 2.3s; }
.lg-tick4 { animation-delay: 3.1s; }

/* ---- 数据链路：虚线流动 + 光包巡游 ---- */
.lg-route { stroke: var(--accent); stroke-width: 1.3; fill: none; opacity: .3;
  stroke-dasharray: 5 9; animation: lgDash 1.6s linear infinite; }
.lg-route-slow { animation-duration: 3s; opacity: .22; }
.lg-route-thin { opacity: .16; stroke-width: 1; }
@keyframes lgDash { to { stroke-dashoffset: -56; } }

.lg-node { fill: var(--accent-strong); opacity: .65; }
html[data-theme="dark"] .lg-node { fill: var(--accent); }
.lg-node-halo { fill: none; stroke: var(--accent); opacity: .25; animation: lgBlip 3.2s ease-in-out infinite; }
.lg-packet {
  fill: var(--accent-strong);
  filter: drop-shadow(0 0 4px var(--accent));
}
html[data-theme="dark"] .lg-packet { fill: var(--accent); }

/* ---- 电路走线（左下） ---- */
.lg-circuit-path { stroke: var(--accent); stroke-width: 1.2; fill: none; opacity: .22;
  stroke-dasharray: 4 8; animation: lgDash 2.6s linear infinite; }
.lg-pad { fill: var(--accent); opacity: .35; }

/* ---- 六边形阵列（右下） ---- */
.lg-hex { fill: none; stroke: var(--accent); stroke-width: 1.2; opacity: .22; }
.lg-hex-inner { opacity: .32; }
.lg-hexgroup { animation: lgFloat 10s ease-in-out infinite;
  transform-box: fill-box; transform-origin: center; }
.lg-hexgroup-2 { animation-duration: 13s; animation-delay: -4s; }
@keyframes lgFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%      { transform: translateY(-14px) rotate(4deg); }
}

/* ---- 角标文字 ---- */
.lg-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  fill: var(--text-muted);
  opacity: .75;
}

/* ---- 扫描线 ---- */
.lg-scanline { animation: lgScan 9s linear infinite; }
@keyframes lgScan {
  from { transform: translateY(0); }
  to   { transform: translateY(1090px); }
}

/* ---- 登录按钮流光 ---- */
#btnLogin { position: relative; overflow: hidden; }
#btnLogin::after {
  content: ""; position: absolute; top: -12%; bottom: -12%; width: 34%; left: 0;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, .38), transparent);
  transform: translateX(-140%) skewX(-20deg);
  animation: lgShine 3.6s ease-in-out infinite;
  pointer-events: none;
}
@keyframes lgShine {
  0%       { transform: translateX(-140%) skewX(-20deg); }
  55%, 100% { transform: translateX(420%) skewX(-20deg); }
}

/* ---- 减弱动态效果：整体退化为静态 ---- */
@media (prefers-reduced-motion: reduce) {
  .login-bg { display: none; }
  .login-card::before, #btnLogin::after { animation: none; }
  .login-mark svg * { animation: none !important; }
  .llm-trend { stroke-dashoffset: 0 !important; opacity: 1 !important; }
}