/* ============================================================
   实验室器材借还管理系统 · 网页后台
   设计语言：Precision Laboratory（精密实验室）
   —— 暖纸底色 · 深墨侧栏 · petrol 主调 · 技术细节
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700;800&family=Noto+Sans+SC:wght@400;500;700&family=JetBrains+Mono:wght@400;500;600&family=Noto+Serif+SC:wght@600;700;900&display=swap');

/* ==================== 设计变量 ==================== */
:root {
  /* 主调 —— petrol/teal，区别于通用蓝 */
  --primary: #0d7377;
  --primary-light: #d4eceb;
  --primary-dark: #095c5f;
  --primary-soft: #e8f4f3;

  /* 辅助 —— 暖琥珀，用于强调与高亮 */
  --amber: #b45309;
  --amber-light: #fef3c7;
  --amber-soft: #fffbeb;

  /* 状态色（精炼版） */
  --success: #15803d;
  --success-light: #dcfce7;
  --success-soft: #f0fdf4;
  --warning: #c2410c;
  --warning-light: #fed7aa;
  --warning-soft: #fff7ed;
  --danger: #b91c1c;
  --danger-light: #fee2e2;
  --danger-soft: #fef2f2;

  /* 中性 —— 暖灰阶，非冷蓝灰 */
  --paper: #faf7f2;       /* 主背景：暖纸 */
  --paper-deep: #f3eee6;  /* 次背景 */
  --surface: #ffffff;     /* 卡片面 */
  --ink: #1a1d29;         /* 深墨：侧栏 */
  --ink-soft: #252a3c;
  --ink-mute: #4a5066;

  --gray-50: #faf8f4;
  --gray-100: #f3eee6;
  --gray-200: #e7e0d4;
  --gray-300: #d4ccbb;
  --gray-400: #a89f8c;
  --gray-500: #7a7264;
  --gray-600: #57503f;
  --gray-700: #3d3829;
  --gray-800: #26221a;
  --gray-900: #1a1d29;

  /* 尺寸与圆角 */
  --sidebar-w: 248px;
  --radius: 6px;
  --radius-sm: 4px;
  --radius-lg: 12px;

  /* 阴影 —— 暖调，柔和 */
  --shadow: 0 1px 2px rgba(45,35,20,0.06), 0 1px 3px rgba(45,35,20,0.04);
  --shadow-md: 0 4px 12px rgba(45,35,20,0.08), 0 2px 4px rgba(45,35,20,0.04);
  --shadow-lg: 0 12px 32px rgba(45,35,20,0.12), 0 4px 12px rgba(45,35,20,0.06);

  /* 字体 */
  --font-display: 'Sora', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', 'Sora', sans-serif;
  --font-serif: 'Noto Serif SC', serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--gray-800);
  font-size: 14px;
  line-height: 1.65;
  /* 实验室记录本网格底纹 */
  background-image:
    linear-gradient(rgba(180,165,130,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(180,165,130,0.07) 1px, transparent 1px);
  background-size: 28px 28px;
  background-position: -1px -1px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* ==================== 登录页（台灯主题 · 蓝白配色） ==================== */
@property --on {
  syntax: '<number>';
  inherits: true;
  initial-value: 0;
}
@property --shade-hue {
  syntax: '<number>';
  inherits: true;
  initial-value: 220;
}

.login-page {
  --on: 0;
  --shade-hue: 220;
  --lamp-bg: #0b1424;
  --lamp-ink: #e8eef8;
  --lamp-ink-dim: #7d879c;
  --lamp-line: #1c2a40;
  --lamp-danger: #ff6b7a;
  --lamp-light: oklch(75% 0.14 var(--shade-hue));
  --lamp-glow:  oklch(65% 0.16 var(--shade-hue));
  --lamp-deep:  oklch(42% 0.11 var(--shade-hue));
  --lamp-accent:      color-mix(in oklab, var(--lamp-light) calc(var(--on) * 100%), #38414f);
  --lamp-accent-glow: color-mix(in oklab, var(--lamp-glow)  calc(var(--on) * 100%), #232b38);
  --lamp-accent-deep: color-mix(in oklab, var(--lamp-deep)  calc(var(--on) * 100%), #1b212c);
  --lamp-card-bg:     color-mix(in oklab, var(--lamp-accent-deep) 20%, #0d1726);
  transition: --on 0.9s ease, --shade-hue 1.4s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px 90px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 62% 55% at 50% 34%,
      color-mix(in oklab, var(--lamp-accent-glow) calc(var(--on) * 20%), transparent) 0%,
      transparent 72%),
    radial-gradient(circle at 50% 125%, #060a12 0%, var(--lamp-bg) 62%);
  color: var(--lamp-ink);
}
.login-page.dozing { transition: --on 3.2s ease, --shade-hue 1.4s ease; }
.login-page.snap   { transition: --on 0.08s ease-out, --shade-hue 1.4s ease; }
.login-page.flash  { transition: --on 0.9s ease, --shade-hue 0.35s ease; }



/* —— 主布局 —— */
.lamp-wrap {
  position: relative; z-index: 1; min-height: 100vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  width: 100%; max-width: 1100px;
}
.lamp-stage {
  display: flex; align-items: center; justify-content: center;
  gap: 64px; flex-wrap: wrap; width: 100%;
}

/* —— 品牌角标 —— */
.lamp-brand {
  position: fixed; top: 24px; left: 28px; z-index: 5;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 3px;
  color: var(--lamp-ink-dim); writing-mode: vertical-rl; user-select: none; opacity: 0.8;
}
.lamp-brand .brand-no {
  margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--lamp-line);
  color: color-mix(in oklab, var(--lamp-accent) 70%, var(--lamp-ink-dim));
  transition: color 0.6s;
}

/* —— 台灯场景 —— */
/* —— 登录卡片 —— */
.card-wrap {
  position: relative; width: 384px; transform-origin: left center;
  transition: opacity 0.7s cubic-bezier(0.34,1.56,0.64,1) 0.15s, transform 0.7s cubic-bezier(0.34,1.56,0.64,1) 0.15s;
}
.card-wrap.off { opacity: 0.6; transform: scale(0.985); cursor: pointer; touch-action: none; transition-delay: 0s; }
.card-wrap.off .lamp-card { pointer-events: none; border-color: #1c2433; background: #0b101a; box-shadow: none; filter: saturate(0.15) brightness(0.55) blur(0.7px); }
.card-wrap.finale { opacity: 0; transform: translateY(-26px) scale(0.95); pointer-events: none; }


.lamp-card {
  background: var(--lamp-card-bg); border: 1.5px solid var(--lamp-accent); border-radius: 18px; padding: 30px 30px 22px;
  box-shadow:
    0 0 0 1px color-mix(in oklab, var(--lamp-accent) 25%, transparent),
    0 18px 50px -8px color-mix(in oklab, var(--lamp-accent-glow) 40%, #000),
    0 0 60px -10px var(--lamp-accent-glow),
    inset 0 1px 0 color-mix(in oklab, var(--lamp-accent) 20%, transparent);
  backdrop-filter: blur(6px);
  transition: border-color 0.7s ease, background 0.7s ease, box-shadow 0.7s ease, filter 0.7s ease;
}
.lamp-card.shake { animation: shake 0.45s cubic-bezier(0.36,0.07,0.19,0.97); }
@keyframes shake {
  10%,90%{transform:translateX(-1px);} 20%,80%{transform:translateX(2px);}
  30%,50%,70%{transform:translateX(-4px);} 40%,60%{transform:translateX(4px);}
}

.lamp-eyebrow { margin: 0 0 10px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 3px; color: color-mix(in oklab, var(--lamp-accent) 80%, var(--lamp-ink-dim)); transition: color 0.6s; }
.lamp-title { margin: 0 0 6px; font-family: var(--font-serif); font-weight: 900; font-size: 24px; letter-spacing: 1px; color: var(--lamp-ink); }
.lamp-sub { margin: 0 0 22px; font-size: 12.5px; color: var(--lamp-ink-dim); letter-spacing: 0.3px; }

.lamp-field { margin-bottom: 14px; }
.lamp-field label { display: block; font-size: 12px; color: var(--lamp-ink-dim); margin-bottom: 6px; letter-spacing: 0.4px; }
.lamp-field input {
  width: 100%; background: #0e1626; border: 1.5px solid #233048; border-radius: 10px; padding: 12px 14px;
  color: var(--lamp-ink); font: inherit; font-size: 14px; outline: none;
  transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}
.lamp-field input::placeholder { color: #4a5364; }
.lamp-field input:disabled { opacity: 0.6; }
.lamp-field input:focus {
  border-color: var(--lamp-accent); background: #121d30;
  box-shadow:
    0 0 0 3px color-mix(in oklab, var(--lamp-accent) 20%, transparent),
    0 0 18px color-mix(in oklab, var(--lamp-accent-glow) 35%, transparent),
    inset 0 0 14px color-mix(in oklab, var(--lamp-accent-glow) 10%, transparent);
}

.pass-box { position: relative; }
.pass-box input { padding-right: 44px; }
.eye-toggle {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%); border: 0; background: none; padding: 8px;
  color: var(--lamp-ink-dim); cursor: pointer; border-radius: 8px; display: flex; transition: color 0.25s;
}
.eye-toggle:hover { color: var(--lamp-accent); }

.lamp-error {
  margin: 0 0 4px; min-height: 16px; font-size: 12px; color: var(--lamp-danger);
  opacity: 0; transform: translateY(-3px); transition: opacity 0.25s, transform 0.25s;
  padding: 8px 12px; border-radius: 6px; background: color-mix(in oklab, var(--lamp-danger) 12%, transparent);
}
.lamp-error.show { opacity: 1; transform: none; }

.card-wrap .btn-login {
  width: 100%; padding: 12px 14px; border: 0; border-radius: 10px;
  background: linear-gradient(180deg,
    color-mix(in oklab, var(--lamp-accent) 90%, #fff 10%),
    var(--lamp-accent) 60%,
    color-mix(in oklab, var(--lamp-accent) 85%, #000 15%));
  color: #fff; font: inherit; font-size: 14px; font-weight: 600; letter-spacing: 3px; cursor: pointer;
  box-shadow: 0 8px 20px -6px var(--lamp-accent-glow), inset 0 1px 0 rgba(255,255,255,0.4);
  transition: filter 0.2s, transform 0.1s, box-shadow 0.3s;
}
.card-wrap .btn-login:hover:not(:disabled) { filter: brightness(1.15); }
.card-wrap .btn-login:active:not(:disabled) { transform: translateY(1px); }
.card-wrap .btn-login:disabled { cursor: default; filter: saturate(0.85); }

.lamp-demo { margin: 14px 0 0; text-align: center; font-size: 11px; color: color-mix(in oklab, var(--lamp-ink-dim) 75%, transparent); letter-spacing: 0.3px; }
.lamp-demo code { font-family: var(--font-mono); color: var(--lamp-ink-dim); background: #0e1626; border: 1px solid #1e2735; border-radius: 5px; padding: 1px 6px; }

/* —— 身份切换 —— */
.role-switch {
  display: flex; gap: 6px; padding: 4px; border-radius: 12px;
  background: #0e1626; border: 1px solid #233048; margin-bottom: 18px;
}
.role-tab {
  flex: 1; padding: 9px 0; border: 0; border-radius: 8px;
  background: transparent; color: var(--lamp-ink-dim); font: inherit; font-size: 13px;
  cursor: pointer; letter-spacing: 1px; transition: all 0.25s;
}
.role-tab.active {
  background: linear-gradient(180deg,
    color-mix(in oklab, var(--lamp-accent) 90%, #fff 10%),
    var(--lamp-accent));
  color: #fff; font-weight: 600;
  box-shadow: 0 4px 14px -4px var(--lamp-accent-glow);
}

/* —— 登录方式切换 —— */
.method-switch {
  display: flex; gap: 4px; margin-bottom: 16px;
  border-bottom: 1px solid #233048; padding-bottom: 10px;
}
.method-tab {
  flex: 1; padding: 6px 0; border: 0; background: transparent;
  color: var(--lamp-ink-dim); font: inherit; font-size: 12px; cursor: pointer;
  letter-spacing: 1px; position: relative; transition: color 0.25s;
}
.method-tab::after {
  content: ''; position: absolute; bottom: -11px; left: 50%; transform: translateX(-50%);
  width: 0; height: 2px; background: var(--lamp-accent); transition: width 0.25s;
}
.method-tab.active { color: var(--lamp-ink); font-weight: 600; }
.method-tab.active::after { width: 70%; }

/* —— 手机号/验证码 —— */
.code-box { display: flex; gap: 8px; }
.code-box input { flex: 1; }
.btn-send-code {
  flex-shrink: 0; padding: 0 12px; border: 1px solid var(--lamp-accent);
  background: color-mix(in oklab, var(--lamp-accent) 15%, transparent);
  color: var(--lamp-accent); border-radius: 10px; font: inherit; font-size: 12px;
  cursor: pointer; white-space: nowrap; transition: filter 0.2s;
}
.btn-send-code:hover:not(:disabled) { filter: brightness(1.15); }
.btn-send-code:disabled { opacity: 0.5; cursor: default; }

/* —— 微信登录按钮 —— */
.wx-login-box { margin-bottom: 16px; }
.btn-wx {
  width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 14px; border: 0; border-radius: 10px; cursor: pointer;
  background: linear-gradient(180deg, #2cbb5d, #1da851);
  color: #fff; font: inherit; font-size: 14px; font-weight: 600; letter-spacing: 1px;
  box-shadow: 0 8px 20px -6px rgba(29,168,81,0.6), inset 0 1px 0 rgba(255,255,255,0.25);
  transition: filter 0.2s, transform 0.1s, box-shadow 0.3s;
}
.btn-wx:hover:not(:disabled) { filter: brightness(1.08); }
.btn-wx:active:not(:disabled) { transform: translateY(1px); }
.btn-wx:disabled { cursor: default; opacity: 0.6; }
.btn-wx .wx-icon { flex-shrink: 0; }
.wx-hint {
  margin: 8px 0 0; text-align: center; font-size: 11px;
  color: color-mix(in oklab, var(--lamp-ink-dim) 70%, transparent); letter-spacing: 0.3px;
}
.divider {
  display: flex; align-items: center; gap: 10px; margin: 4px 0 14px;
  color: var(--lamp-ink-dim); font-size: 11px; letter-spacing: 1px;
}
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: #233048; }

/* —— 学生登录表单 —— */
#studentLoginForm { margin-bottom: 2px; }



@media (max-width: 820px) {
  .lamp-stage { gap: 8px; }
  .lamp-brand { display: none; }
  .card-wrap { width: min(384px, 100%); }
}

/* —— 提示条 —— */
.lamp-toast {
  position: fixed; top: 32px; left: 50%; transform: translate(-50%, -20px); z-index: 1000;
  padding: 12px 22px; border-radius: 12px; font-size: 14px; letter-spacing: 0.3px;
  color: var(--lamp-ink, #e8eef8);
  background: color-mix(in oklab, #0d1726 88%, #ff6b7a 12%);
  border: 1.5px solid #ff6b7a;
  box-shadow: 0 10px 30px -6px rgba(0,0,0,0.6);
  opacity: 0; pointer-events: none; backdrop-filter: blur(6px);
  transition: opacity 0.35s ease, transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
  font-family: 'Noto Sans SC', sans-serif;
}
.lamp-toast.show { opacity: 1; transform: translate(-50%, 0); }
.lamp-toast.success {
  background: color-mix(in oklab, #0d1726 85%, #6ba8ff 15%);
  border-color: #6ba8ff;
  box-shadow: 0 10px 30px -6px color-mix(in oklab, #6ba8ff 50%, #000), 0 0 30px -4px #6ba8ff;
}
.lamp-toast .toast-icon {
  display: inline-block; width: 18px; height: 18px; margin-right: 10px; border-radius: 50%;
  background: #ff6b7a; color: #0a0f17; font-weight: 800; text-align: center; line-height: 18px;
  font-size: 12px; vertical-align: middle;
}
.lamp-toast.success .toast-icon { background: #6ba8ff; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 12px; font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 7px;
  font-family: var(--font-display);
  letter-spacing: 0.3px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 11px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: var(--font-body);
  background: var(--gray-50);
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13,115,119,0.14);
  background: var(--surface);
}
.form-group textarea { resize: vertical; min-height: 80px; }

/* ==================== 管理后台布局 ==================== */
.admin-app { display: flex; min-height: 100vh; }
.student-app { display: flex; min-height: 100vh; }

/* —— 侧边栏 —— */
.sidebar,
.student-sidebar {
  width: var(--sidebar-w);
  background: var(--ink);
  color: #fff;
  display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; bottom: 0;
  z-index: 100;
  box-shadow: 4px 0 24px rgba(26,29,41,0.15);
}

.sidebar-logo {
  padding: 22px 22px;
  display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  position: relative;
}
.sidebar-logo::after {
  content: '';
  position: absolute; bottom: -1px; left: 22px;
  width: 32px; height: 2px;
  background: var(--primary);
}
.sidebar-logo .logo-icon {
  width: 36px; height: 36px;
  background: var(--primary);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.sidebar-logo .logo-icon svg { width: 20px; height: 20px; }
.sidebar-logo .logo-text {
  font-family: var(--font-display);
  font-size: 15px; font-weight: 700;
  letter-spacing: 0.3px;
  line-height: 1.3;
}
.sidebar-logo .logo-text small {
  display: block;
  font-size: 9px; font-weight: 400;
  color: rgba(255,255,255,0.4);
  font-family: var(--font-mono);
  letter-spacing: 1.5px;
  margin-top: 2px;
}

.sidebar-nav { flex: 1; padding: 14px 0; overflow-y: auto; }

.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 22px;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 14px;
  transition: all .2s;
  border-left: 3px solid transparent;
  position: relative;
  font-weight: 500;
}
.nav-item:hover {
  color: #fff;
  background: rgba(255,255,255,0.05);
}
.nav-item.active {
  color: #fff;
  background: rgba(13,115,119,0.18);
  border-left-color: var(--primary);
}
.nav-item.active::after {
  content: '';
  position: absolute; right: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 24px;
  background: var(--primary);
  border-radius: 3px 0 0 3px;
}
.nav-icon {
  width: 18px; height: 18px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  opacity: 0.85;
}
.nav-icon svg { width: 18px; height: 18px; }
.nav-item.active .nav-icon { opacity: 1; color: var(--primary); }

.nav-badge {
  position: absolute;
  right: 18px; top: 50%;
  transform: translateY(-50%);
  background: var(--amber);
  color: #fff;
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 10px;
  font-weight: 700;
  line-height: 1.4;
  font-family: var(--font-mono);
  box-shadow: 0 0 0 2px var(--ink);
}
.nav-badge.pulse { animation: badgePulse 2s ease-in-out infinite; }
@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 2px var(--ink), 0 0 0 0 rgba(180,83,9,0.5); }
  50% { box-shadow: 0 0 0 2px var(--ink), 0 0 0 6px rgba(180,83,9,0); }
}

.sidebar-footer {
  padding: 16px 22px;
  border-top: 1px solid rgba(255,255,255,0.07);
}
.btn-logout {
  width: 100%; padding: 9px;
  background: transparent;
  color: rgba(255,255,255,0.45);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font-body);
  transition: all .2s;
}
.btn-logout:hover {
  color: #fff;
  border-color: rgba(255,255,255,0.3);
  background: rgba(185,28,28,0.15);
}

/* —— 主内容区 —— */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex; flex-direction: column;
  min-height: 100vh;
}

.topbar {
  height: 62px;
  background: var(--surface);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 28px;
  border-bottom: 1px solid var(--gray-200);
  box-shadow: 0 1px 3px rgba(45,35,20,0.04);
  position: sticky; top: 0; z-index: 50;
}
.topbar h2 {
  font-family: var(--font-display);
  font-size: 18px; font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.2px;
  display: flex; align-items: center; gap: 10px;
}
.topbar h2::before {
  content: '';
  display: inline-block;
  width: 4px; height: 18px;
  background: var(--primary);
  border-radius: 2px;
}

.topbar-right { display: flex; align-items: center; gap: 22px; }
.topbar-time {
  font-size: 12px;
  color: var(--gray-500);
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
}
.topbar-admin { display: flex; align-items: center; gap: 10px; }
.admin-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
  font-family: var(--font-display);
  border: 2px solid var(--primary);
}
#adminName {
  font-size: 13px; font-weight: 600;
  color: var(--gray-700);
}

.page-body { flex: 1; padding: 26px 28px; }

/* ==================== 通用组件 ==================== */

/* —— 按钮 —— */
.btn {
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius);
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-body);
  font-weight: 500;
  letter-spacing: 0.2px;
  white-space: nowrap;
}
.btn svg { width: 14px; height: 14px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 2px 8px rgba(13,115,119,0.3); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #166534; box-shadow: 0 2px 8px rgba(21,128,61,0.3); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #991b1b; box-shadow: 0 2px 8px rgba(185,28,28,0.3); }
.btn-warning { background: var(--amber); color: #fff; }
.btn-warning:hover { background: #92400e; box-shadow: 0 2px 8px rgba(180,83,9,0.3); }
.btn-outline {
  background: var(--surface);
  color: var(--gray-600);
  border: 1px solid var(--gray-300);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
}
.btn-sm { padding: 5px 11px; font-size: 12px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn:active:not(:disabled) { transform: scale(0.98); }

/* —— 卡片 —— */
.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid var(--gray-200);
}
.card-header {
  padding: 15px 22px;
  border-bottom: 1px solid var(--gray-100);
  display: flex; align-items: center; justify-content: space-between;
  background: var(--gray-50);
}
.card-header h3 {
  font-family: var(--font-display);
  font-size: 14px; font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.2px;
  display: flex; align-items: center; gap: 8px;
}
.card-header h3 .h-icon {
  color: var(--primary);
  display: inline-flex;
}
.card-header h3 .h-icon svg { width: 16px; height: 16px; }
.card-body { padding: 22px; }

/* —— 表格 —— */
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 11px 16px;
  text-align: left;
  font-size: 13px;
}
thead th {
  background: var(--paper-deep);
  color: var(--gray-600);
  font-weight: 600;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.3px;
  border-bottom: 2px solid var(--gray-300);
  white-space: nowrap;
  position: sticky; top: 0;
  text-transform: uppercase;
}
tbody tr {
  border-bottom: 1px solid var(--gray-100);
  transition: background .15s;
}
tbody tr:hover { background: var(--primary-soft); }
tbody tr:last-child { border-bottom: none; }

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--gray-100);
}

/* —— 状态标签 —— */
.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  letter-spacing: 0.3px;
  border: 1px solid transparent;
  font-family: var(--font-display);
}
.tag-available {
  background: var(--success-soft);
  color: var(--success);
  border-color: var(--success-light);
}
.tag-borrowed {
  background: var(--primary-soft);
  color: var(--primary);
  border-color: var(--primary-light);
}
.tag-overdue {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: var(--danger-light);
  font-weight: 700;
}
.tag-repairing {
  background: var(--warning-soft);
  color: var(--warning);
  border-color: var(--warning-light);
}
.tag-scrap {
  background: var(--gray-100);
  color: var(--gray-500);
  border-color: var(--gray-200);
}
.tag-pending {
  background: var(--amber-soft);
  color: var(--amber);
  border-color: var(--amber-light);
}
.tag-approved {
  background: var(--success-soft);
  color: var(--success);
  border-color: var(--success-light);
}
.tag-rejected {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: var(--danger-light);
}
.tag-returned {
  background: var(--gray-50);
  color: var(--gray-500);
  border-color: var(--gray-200);
}

/* —— 搜索栏 —— */
.toolbar {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.auth-summary { display:flex; align-items:center; justify-content:space-between; gap:24px; padding:22px 24px; margin-bottom:16px; color:#fff; border-radius:14px; background:linear-gradient(120deg,#0e3f75,#1557a0 58%,#2477c8); box-shadow:0 10px 28px rgba(21,87,160,.2); }
.auth-summary > div:first-child { display:flex; flex-direction:column; gap:4px; }
.auth-summary span { font-size:12px; letter-spacing:1.5px; opacity:.78; }
.auth-summary strong { font-size:22px; }
.auth-summary small { opacity:.8; }
.auth-summary-actions { display:flex; gap:8px; flex-wrap:wrap; }
.auth-summary-actions .btn-outline { color:#fff; border-color:rgba(255,255,255,.45); background:rgba(255,255,255,.08); }
.auth-summary-actions .btn-primary { background:#fff; color:#1557a0; border-color:#fff; }
.cell-sub { color:var(--gray-500); font-size:12px; margin-top:4px; white-space:nowrap; }
.mono { font-family:Consolas,Monaco,monospace; }
.student-actions { min-width:250px; }
.student-actions .btn { margin:2px; }
.tag-disabled { color:#7c5411; background:#fff2cd; }
.tag-revoked { color:#9b2730; background:#fde4e6; }
.form-notice,.import-guide { padding:12px 14px; border:1px solid #cfe0f3; border-radius:8px; color:#315777; background:#f3f8fd; font-size:13px; line-height:1.7; }
.import-guide { display:flex; flex-direction:column; margin-bottom:16px; }
@media (max-width:900px) { .auth-summary { align-items:flex-start; flex-direction:column; } }
.toolbar input,
.toolbar select {
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 13px;
  font-family: var(--font-body);
  background: var(--surface);
  transition: border-color .2s, box-shadow .2s;
}
.toolbar input:focus,
.toolbar select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13,115,119,0.12);
}
.search-input { min-width: 220px; }

/* —— 分页 —— */
.pagination {
  display: flex; align-items: center; gap: 8px;
  justify-content: flex-end;
  margin-top: 18px;
}
.pagination button {
  padding: 6px 13px;
  border: 1px solid var(--gray-300);
  background: var(--surface);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font-body);
  transition: all .2s;
}
.pagination button:hover:not(:disabled) {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
}
.pagination button:disabled { opacity: .4; cursor: not-allowed; }
.pagination .page-info {
  font-size: 12px;
  color: var(--gray-500);
  font-family: var(--font-mono);
  margin-right: 8px;
}

/* —— 统计卡片 —— */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  display: flex; align-items: center; gap: 16px;
  transition: transform .2s, box-shadow .2s;
  position: relative;
  overflow: hidden;
}
/* 卡片顶部色条 */
.stat-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--primary);
}
.stat-card.success::before { background: var(--success); }
.stat-card.danger::before { background: var(--danger); }
.stat-card.warning::before { background: var(--amber); }
.stat-card.primary::before { background: var(--primary); }
.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.stat-icon {
  width: 50px; height: 50px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.stat-icon svg { width: 24px; height: 24px; }
.stat-info h4 {
  font-size: 12px;
  color: var(--gray-500);
  font-weight: 500;
  margin-bottom: 4px;
  font-family: var(--font-display);
  letter-spacing: 0.3px;
}
.stat-info .num {
  font-size: 30px;
  font-weight: 800;
  color: var(--ink);
  line-height: 1;
  font-family: var(--font-display);
  letter-spacing: -0.5px;
}
.stat-card.danger .num { color: var(--danger); }
.stat-card.success .num { color: var(--success); }
.stat-card.primary .num { color: var(--primary); }
.stat-card.warning .num { color: var(--amber); }

/* —— 图表 —— */
.chart-container { height: 280px; position: relative; }

/* —— 弹窗 —— */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(26,29,41,0.55);
  backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  padding: 24px;
  animation: fadeIn .2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-box {
  background: var(--surface);
  border-radius: var(--radius-lg);
  width: 580px;
  max-width: 100%;
  max-height: 90vh;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: modalRise .3s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid var(--gray-200);
}
@keyframes modalRise {
  from { opacity: 0; transform: translateY(20px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-box.large { width: 820px; }
.modal-header {
  padding: 17px 24px;
  border-bottom: 1px solid var(--gray-100);
  display: flex; align-items: center; justify-content: space-between;
  background: var(--gray-50);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.modal-header h3 {
  font-family: var(--font-display);
  font-size: 16px; font-weight: 700;
  color: var(--ink);
  display: flex; align-items: center; gap: 8px;
}
.modal-header h3::before {
  content: '';
  width: 3px; height: 16px;
  background: var(--primary);
  border-radius: 2px;
}
.modal-close {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--gray-400);
  line-height: 1;
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.modal-close:hover {
  background: var(--danger-soft);
  color: var(--danger);
}
.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-100);
  display: flex; justify-content: flex-end; gap: 10px;
  background: var(--gray-50);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* —— 表单行 —— */
.form-row { display: flex; gap: 16px; margin-bottom: 16px; }
.form-row .form-group { flex: 1; }
.form-group-full { margin-bottom: 16px; }
.form-group-full label {
  display: block;
  font-size: 12px; font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 7px;
  font-family: var(--font-display);
  letter-spacing: 0.3px;
}
.form-group-full input,
.form-group-full select,
.form-group-full textarea {
  width: 100%; padding: 10px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: var(--font-body);
  background: var(--gray-50);
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.form-group-full input:focus,
.form-group-full select:focus,
.form-group-full textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13,115,119,0.14);
  background: var(--surface);
}

/* —— 提示条 —— */
.toast {
  position: fixed;
  top: 24px; right: 24px;
  padding: 13px 22px;
  border-radius: var(--radius);
  font-size: 14px;
  z-index: 2000;
  box-shadow: var(--shadow-lg);
  animation: toastIn .35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex; align-items: center; gap: 8px;
  font-weight: 500;
  border-left: 4px solid;
}
.toast.success { background: var(--success); color: #fff; border-left-color: #166534; }
.toast.error { background: var(--danger); color: #fff; border-left-color: #7f1d1d; }
.toast.info { background: var(--primary); color: #fff; border-left-color: var(--primary-dark); }
.toast.warning { background: var(--amber); color: #fff; border-left-color: #78350f; }
@keyframes toastIn {
  from { transform: translateX(120%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* —— Tab 标签页 —— */
.tabs {
  display: flex; gap: 2px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--gray-200);
}
.tab-item {
  padding: 10px 20px;
  cursor: pointer;
  font-size: 14px;
  color: var(--gray-500);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all .2s;
  position: relative;
  font-weight: 500;
}
.tab-item:hover { color: var(--primary); }
.tab-item.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 700;
}
.tab-item .tab-count {
  background: var(--gray-200);
  color: var(--gray-600);
  padding: 1px 7px;
  border-radius: 8px;
  font-size: 11px;
  margin-left: 6px;
  font-family: var(--font-mono);
  font-weight: 600;
}
.tab-item.active .tab-count {
  background: var(--primary-light);
  color: var(--primary);
}

/* —— 逾期行高亮 —— */
tr.row-overdue {
  background: var(--danger-soft);
}
tr.row-overdue:hover { background: var(--danger-light); }
tr.row-overdue td:first-child {
  border-left: 3px solid var(--danger);
}

/* —— 空状态 —— */
.empty-state {
  text-align: center;
  padding: 52px 20px;
  color: var(--gray-400);
}
.empty-state .empty-icon {
  font-size: 44px;
  margin-bottom: 14px;
  opacity: 0.6;
}
.empty-state p { font-size: 14px; }

/* —— 流水时间线 —— */
.timeline { position: relative; padding-left: 26px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 7px; top: 4px; bottom: 4px;
  width: 2px;
  background: var(--gray-200);
}
.timeline-item { position: relative; padding-bottom: 18px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -22px; top: 4px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--surface);
  box-shadow: 0 0 0 2px var(--primary-light);
}
.timeline-item.overdue::before {
  background: var(--danger);
  box-shadow: 0 0 0 2px var(--danger-light);
}
.timeline-item.returned::before {
  background: var(--success);
  box-shadow: 0 0 0 2px var(--success-light);
}
.timeline-item.rejected::before {
  background: var(--gray-400);
  box-shadow: 0 0 0 2px var(--gray-200);
}

.timeline-content { font-size: 13px; }
.timeline-content .tl-title {
  font-weight: 600;
  color: var(--gray-700);
}
.timeline-content .tl-time {
  font-size: 11px;
  color: var(--gray-400);
  margin-top: 3px;
  font-family: var(--font-mono);
  letter-spacing: 0.3px;
}

/* —— 网格布局工具类 —— */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-2-mb { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }

/* —— 响应式 —— */
@media (max-width: 1024px) {
  .grid-2, .grid-2-mb { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .main-content { margin-left: 0; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .form-row { flex-direction: column; }
  .page-body { padding: 16px; }
}

/* ==================== 企业工业化增强 ==================== */
:root {
  --primary: #176b87;
  --primary-dark: #0e5169;
  --primary-light: #cfe8f0;
  --primary-soft: #eef7fa;
  --ink: #111b24;
  --ink-soft: #192733;
  --paper: #f2f5f6;
  --paper-deep: #e8edef;
  --surface: #ffffff;
}

body {
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(37, 67, 82, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 67, 82, .045) 1px, transparent 1px);
  background-size: 32px 32px;
}

.sidebar {
  background: linear-gradient(155deg, rgba(23, 107, 135, .15), transparent 36%), var(--ink);
  border-right: 1px solid rgba(132, 181, 198, .18);
}

.nav-section-label {
  padding: 16px 22px 6px;
  color: rgba(255, 255, 255, .28);
  font: 600 9px/1 var(--font-mono);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.system-mini-status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding: 10px 11px;
  border: 1px solid rgba(255, 255, 255, .08);
  background: rgba(255, 255, 255, .035);
  border-radius: var(--radius);
}
.system-mini-status .status-dot {
  width: 8px; height: 8px; border-radius: 50%; background: #35c27c;
  box-shadow: 0 0 0 4px rgba(53, 194, 124, .12);
}
.system-mini-status strong, .system-mini-status small { display: block; }
.system-mini-status strong { color: rgba(255,255,255,.75); font-size: 11px; }
.system-mini-status small { color: rgba(255,255,255,.28); font: 9px var(--font-mono); margin-top: 2px; }

.topbar { height: 68px; }
.topbar-right { gap: 14px; }
.topbar-refresh {
  border: 1px solid var(--gray-200); background: var(--surface); color: var(--gray-600);
  border-radius: 5px; padding: 7px 10px; font: 600 12px var(--font-body); cursor: pointer;
}
.topbar-refresh:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-soft); }
.service-status {
  display: inline-flex; align-items: center; gap: 7px; padding: 6px 10px;
  border: 1px solid; border-radius: 999px; font-size: 11px; font-weight: 700;
}
.service-status i { width: 7px; height: 7px; border-radius: 50%; }
.service-status.online { color: #167044; background: #effbf4; border-color: #c9edd9; }
.service-status.online i { background: #25a865; box-shadow: 0 0 0 3px rgba(37,168,101,.12); }
.service-status.offline { color: var(--danger); background: var(--danger-soft); border-color: var(--danger-light); }
.service-status.offline i { background: var(--danger); }

.operation-hero {
  position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px; align-items: center; margin-bottom: 20px; padding: 24px 26px;
  color: #eef8fb; background: linear-gradient(120deg, rgba(23,107,135,.94), rgba(17,27,36,.97)), var(--ink);
  border: 1px solid rgba(23,107,135,.32); border-radius: 10px;
  box-shadow: 0 10px 28px rgba(17,27,36,.14); overflow: hidden;
}
.operation-hero::after {
  content: ''; position: absolute; width: 240px; height: 240px; right: -100px; top: -140px;
  border: 1px solid rgba(255,255,255,.12); border-radius: 50%;
  box-shadow: 0 0 0 34px rgba(255,255,255,.025), 0 0 0 68px rgba(255,255,255,.018);
}
.operation-hero .eyebrow {
  display: block; color: #9bd4e6; font: 600 10px var(--font-mono);
  letter-spacing: 1.6px; margin-bottom: 7px;
}
.operation-hero h3 { font: 700 22px var(--font-display); letter-spacing: .2px; }
.operation-hero p { margin-top: 7px; color: rgba(238,248,251,.68); font-size: 13px; }
.operation-metrics { display: flex; position: relative; z-index: 1; }
.operation-metrics > div {
  min-width: 98px; padding: 8px 18px; border-left: 1px solid rgba(255,255,255,.15); text-align: center;
}
.operation-metrics span { display: block; font: 800 28px/1 var(--font-display); }
.operation-metrics small { display: block; margin-top: 7px; color: rgba(255,255,255,.58); font-size: 11px; }
.operation-metrics .critical span { color: #ff9d95; }
.operation-metrics .attention span { color: #ffd07a; }

.table-hint { color: var(--gray-400); font-size: 11px; font-family: var(--font-mono); }
.tag-return-applied { color: #8a5200; background: #fff5d6; border-color: #f3d58b; }
tr.row-priority { background: #fffdf5; }
tr.row-priority:hover { background: #fff8dc; }
tr.row-priority td:first-child { border-left: 3px solid #d89b2b; }

.verification-card {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-bottom: 20px;
  overflow: hidden; border: 1px solid var(--gray-200); border-radius: 7px; background: var(--gray-200);
}
.verification-card > div { padding: 13px 14px; background: var(--gray-50); }
.verification-card small, .verification-card strong, .verification-card span { display: block; }
.verification-card small { color: var(--gray-400); font-size: 10px; letter-spacing: .8px; }
.verification-card strong { margin-top: 4px; color: var(--ink); font-size: 13px; }
.verification-card span { margin-top: 2px; color: var(--gray-500); font-size: 11px; }
.process-note {
  display: flex; gap: 12px; padding: 12px 14px; border-left: 3px solid var(--primary);
  background: var(--primary-soft); color: var(--gray-600); font-size: 12px;
}
.process-note strong { color: var(--primary-dark); white-space: nowrap; }

@media (max-width: 1100px) {
  .operation-hero { grid-template-columns: 1fr; }
  .operation-metrics { border-top: 1px solid rgba(255,255,255,.12); padding-top: 14px; }
  .operation-metrics > div:first-child { border-left: 0; padding-left: 0; }
  .verification-card { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .topbar-time, .service-status { display: none; }
  .operation-hero { padding: 20px; }
  .operation-metrics > div { min-width: 0; flex: 1; padding: 7px 10px; }
  .operation-hero h3 { font-size: 18px; }
}

/* ============================================================
   登录页 · 学院风覆盖（图片版，替代原台灯主题）
   —— 校园风光相框 + 浅色玻璃登录卡片
   ============================================================ */

/* —— 全屏学院照片背景 —— */
.login-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: #0b1424;
}
.login-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transform: scale(1.04);
}
/* 暗化叠加：保证登录卡可读，并把视觉聚焦到中心 */
.login-bg-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(125deg,
      rgba(6, 14, 22, 0.62) 0%,
      rgba(6, 14, 22, 0.28) 42%,
      rgba(6, 14, 22, 0.58) 100%),
    radial-gradient(ellipse 62% 60% at 50% 44%,
      rgba(6, 14, 22, 0) 32%,
      rgba(6, 14, 22, 0.58) 100%);
}

/* 原侧栏照片（已移为全屏背景），隐藏避免重复显示 */
.lamp-area,
.college-photo,
.college-img,
.college-frame,
.college-tag { display: none; }

/* —— 登录页氛围（照片背景下的兜底底色） —— */
.login-page {
  background:
    radial-gradient(ellipse 55% 45% at 50% 22%, rgba(58, 122, 165, 0.22) 0%, transparent 70%),
    radial-gradient(circle at 50% 125%, #060a12 0%, #0b1424 62%);
}
/* —— 登录卡片：透明毛胚色学院风 —— */
.card-wrap { transform-origin: center center; }
.card-wrap.off .lamp-card { filter: none; background: rgba(222, 217, 206, 0.5); }

.lamp-card {
  /* 透明毛胚（水泥灰）色：半透暖灰 + 毛玻璃 */
  background: rgba(222, 217, 206, 0.58);
  backdrop-filter: blur(16px) saturate(1.05);
  -webkit-backdrop-filter: blur(16px) saturate(1.05);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 14px;
  padding: 34px 34px 26px;
  box-shadow:
    0 30px 70px -22px rgba(0, 0, 0, 0.6),
    0 10px 24px -12px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
}
.lamp-card.shake { animation: shake 0.45s cubic-bezier(0.36, 0.07, 0.19, 0.97); }

/* 眉题 / 标题 / 副标题 —— 官方深墨色，保证清晰 */
.lamp-eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: #1c5fb0;
}
.lamp-title {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 26px;
  letter-spacing: 1px;
  color: #23211c;
}
.lamp-sub {
  margin: 0 0 26px;
  font-size: 13px;
  color: #4a463d;
  letter-spacing: 0.4px;
}

/* 表单 */
.lamp-field { margin-bottom: 16px; }
.lamp-field label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: #3a362e;
  margin-bottom: 7px;
  letter-spacing: 0.5px;
}
.lamp-field input {
  width: 100%;
  background: rgba(255, 255, 255, 0.72);
  border: 1.5px solid rgba(120, 112, 96, 0.35);
  border-radius: 10px;
  padding: 13px 15px;
  color: #23211c;
  font: inherit;
  font-size: 14.5px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}
.lamp-field input::placeholder { color: #847c6c; }
.lamp-field input:disabled { opacity: 0.6; }
.lamp-field input:focus {
  border-color: #1c5fb0;
  background: rgba(255, 255, 255, 0.92);
  box-shadow:
    0 0 0 4px rgba(28, 95, 176, 0.15),
    0 4px 14px -4px rgba(28, 95, 176, 0.3);
}

/* 错误提示 */
.lamp-error {
  margin: 0 0 6px;
  min-height: 16px;
  font-size: 12.5px;
  color: #b3261e;
  opacity: 0;
  transform: translateY(-3px);
  transition: opacity 0.25s, transform 0.25s;
  padding: 9px 13px;
  border-radius: 8px;
  background: rgba(179, 38, 30, 0.1);
  border: 1px solid rgba(179, 38, 30, 0.3);
}
.lamp-error.show { opacity: 1; transform: none; }

/* 登录按钮 —— 官方蓝 */
.card-wrap .btn-login {
  width: 100%;
  padding: 13px 14px;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(180deg, #2a6bc0 0%, #1c5fb0 55%, #14478f 100%);
  color: #fff;
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 3px;
  cursor: pointer;
  box-shadow:
    0 12px 26px -10px rgba(20, 71, 143, 0.6),
    0 6px 14px -8px rgba(20, 71, 143, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  transition: filter 0.2s, transform 0.12s, box-shadow 0.3s;
}
.card-wrap .btn-login:hover:not(:disabled) {
  filter: brightness(1.08);
  box-shadow: 0 16px 30px -10px rgba(20, 71, 143, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.card-wrap .btn-login:active:not(:disabled) { transform: translateY(1px); }
.card-wrap .btn-login:disabled { cursor: default; filter: saturate(0.85); }

/* 演示提示 */
.lamp-demo {
  margin: 16px 0 0;
  text-align: center;
  font-size: 11.5px;
  color: #6b6557;
  letter-spacing: 0.3px;
}
.lamp-demo code {
  font-family: var(--font-mono);
  color: #2b3b52;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(120, 112, 96, 0.3);
  border-radius: 6px;
  padding: 1px 7px;
}

/* 品牌角标（官方蓝） */
.lamp-brand {
  color: #e7edf4;
  opacity: 0.92;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}
.lamp-brand .brand-no {
  border-top-color: rgba(255, 255, 255, 0.25);
  color: #6fa8e8;
}

/* 提示条配色对齐浅色视觉 */
.lamp-toast {
  color: #122a36;
  background: rgba(255, 255, 255, 0.92);
  border-color: #d6e1ea;
  box-shadow: 0 14px 40px -8px rgba(0, 0, 0, 0.35);
}
.lamp-toast.success {
  background: rgba(255, 255, 255, 0.95);
  border-color: #9fdcdf;
  box-shadow: 0 14px 40px -8px rgba(13, 115, 119, 0.3);
}
.lamp-toast .toast-icon {
  background: var(--danger);
  color: #fff;
}
.lamp-toast.success .toast-icon { background: var(--primary); }

/* 移动端适配 */
@media (max-width: 820px) {
  .card-wrap { width: min(384px, 100%); }
  .login-bg-img { transform: scale(1.08); }
}