/* VinceYun 管理端主题：登录、注册、主页、留言板、管理后台共用。
   博客页面在此基础上叠加 /styles/blog.css。 */

:root {
  color-scheme: light;
  --bg: #eef4ff;
  --bg-soft: #f8fbff;
  --panel: rgba(255,255,255,.84);
  --panel-solid: #fff;
  --panel-muted: rgba(255,255,255,.58);
  --text: #172033;
  --muted: #667085;
  --subtle: #98a2b3;
  --line: rgba(42,65,110,.13);
  --primary: #2563eb;
  --primary-2: #06b6d4;
  --success: #059669;
  --warning: #d97706;
  --danger: #dc2626;
  --info: #0ea5e9;
  --shadow-sm: 0 6px 18px rgba(30,64,175,.08);
  --shadow: 0 18px 55px rgba(15,23,42,.14);
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 26px;
  --speed: .22s;
  --font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  /* 兼容旧页面内联样式变量名 */
  --primary-color: var(--primary);
  --secondary-color: var(--primary-2);
  --tertiary-color: #14b8a6;
  --success-color: var(--success);
  --warning-color: var(--warning);
  --error-color: var(--danger);
  --info-color: var(--info);
  --text-secondary: var(--muted);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1220;
  --bg-soft: #111827;
  --panel: rgba(17,24,39,.80);
  --panel-solid: #182235;
  --panel-muted: rgba(31,41,55,.62);
  --text: #f8fafc;
  --muted: #b6c2d2;
  --subtle: #7b8798;
  --line: rgba(226,232,240,.13);
  --primary: #60a5fa;
  --primary-2: #22d3ee;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
  --info: #38bdf8;
  --shadow-sm: 0 6px 20px rgba(0,0,0,.28);
  --shadow: 0 22px 70px rgba(0,0,0,.36);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  font-family: var(--font);
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(circle at 18% 12%, rgba(37,99,235,.20), transparent 28%),
    radial-gradient(circle at 82% 8%, rgba(6,182,212,.18), transparent 26%),
    linear-gradient(135deg, var(--bg), var(--bg-soft));
  background-attachment: fixed;
}

a { color: inherit; }
button, input, select, textarea { font: inherit; }
textarea { resize: vertical; }
::selection { background: var(--primary); color: #fff; }

.container {
  width: 100%;
  max-width: 1220px;
  min-height: calc(100vh - 110px);
  margin: 0 auto;
  padding: 28px 20px;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-card,
.main-card,
.admin-panel,
.user-info,
.service-card,
.modal-content {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
}

.auth-card,
.main-card {
  width: 100%;
  border-radius: var(--radius-lg);
  padding: 38px;
  animation: panelIn .45s ease both;
}
.auth-card { max-width: 430px; }
.main-card { max-width: 1060px; }
@keyframes panelIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

.logo { text-align: center; margin-bottom: 28px; }
.logo h1 {
  margin-bottom: 8px;
  font-size: clamp(1.9rem, 4vw, 2.55rem);
  line-height: 1.15;
  font-weight: 850;
  letter-spacing: -.04em;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.logo p { color: var(--muted); font-weight: 500; }

.section-divider {
  height: 1px;
  margin: 28px 0;
  background: linear-gradient(90deg, transparent, var(--line), var(--primary), var(--line), transparent);
  opacity: .65;
}

.form-group, .compact-form-group { margin-bottom: 20px; }
.compact-form-group { margin-bottom: 14px; }
.form-group label, .compact-form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
  font-size: .92rem;
  font-weight: 750;
}
.form-control {
  width: 100%;
  min-height: 44px;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: 12px;
  outline: none;
  background: var(--panel-solid);
  color: var(--text);
  transition: border-color var(--speed), box-shadow var(--speed), transform var(--speed);
}
.form-control::placeholder { color: var(--subtle); }
.form-control:hover { border-color: rgba(37,99,235,.32); }
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(37,99,235,.12); transform: translateY(-1px); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 44px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 750;
  text-decoration: none;
  transition: transform var(--speed), box-shadow var(--speed), background var(--speed), border-color var(--speed);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .56; cursor: not-allowed; transform: none; }
.btn-primary { color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-2)); box-shadow: 0 10px 24px rgba(37,99,235,.20); }
.btn-secondary, .btn-xxs, .btn-unlock { color: var(--text); background: var(--panel-solid); border-color: var(--line); }
.btn-danger { width: auto; min-height: 0; padding: 6px 10px !important; color: var(--danger); background: rgba(220,38,38,.09); border-color: rgba(220,38,38,.20); font-size: .75rem !important; }
.btn-xxs { width: auto; min-height: 0; padding: 6px 10px !important; font-size: .76rem !important; }
.btn-unlock { width: auto; padding: 8px 12px; color: var(--muted); }

.loading { width: 18px; height: 18px; display: inline-block; border: 2px solid rgba(255,255,255,.35); border-top-color: #fff; border-radius: 999px; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.text-center { text-align: center; }
.text-small { font-size: .88rem; }
.text-secondary { color: var(--muted); }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.link { color: var(--primary); cursor: pointer; font-weight: 750; text-decoration: none; }
.link:hover { text-decoration: underline; }

.theme-toggle,
.floating-home-btn {
  position: fixed;
  z-index: 1000;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--panel);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  backdrop-filter: blur(18px);
}
.theme-toggle { top: 22px; right: 22px; }
.floating-home-btn { right: 22px; bottom: 24px; }
.theme-toggle:hover, .floating-home-btn:hover { transform: translateY(-2px); }

.message-container { position: fixed; top: 22px; left: 50%; z-index: 10000; width: min(92vw, 620px); transform: translateX(-50%); display: flex; flex-direction: column; gap: 10px; pointer-events: none; }
.message { padding: 14px 18px; border-radius: 14px; border: 1px solid var(--line); background: var(--panel-solid); box-shadow: var(--shadow-sm); font-size: .92rem; font-weight: 650; opacity: 0; transform: translateY(-10px); transition: opacity var(--speed), transform var(--speed); pointer-events: auto; }
.message.message-show { opacity: 1; transform: translateY(0); }
.message-success, .message.success { color: var(--success); border-color: rgba(5,150,105,.24); }
.message-error, .message.error { color: var(--danger); border-color: rgba(220,38,38,.24); }
.message-warning, .message.warning { color: var(--warning); border-color: rgba(217,119,6,.25); }
.message-info, .message.info { color: var(--info); border-color: rgba(14,165,233,.25); }

.password-strength { margin-top: 9px; font-size: .82rem; font-weight: 750; }
.strength-weak { color: var(--danger); }
.strength-medium { color: var(--warning); }
.strength-strong { color: var(--success); }

.user-info { border-radius: var(--radius); padding: 20px; }
.info-row { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.info-row:last-child { border-bottom: 0; }
.info-label { color: var(--muted); font-weight: 750; }
.info-value { color: var(--text); font-weight: 850; }

.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.service-card { min-height: 156px; padding: 24px 18px; border-radius: var(--radius); text-align: center; cursor: pointer; text-decoration: none; transition: transform var(--speed), box-shadow var(--speed), border-color var(--speed); }
.service-card:hover { transform: translateY(-6px); border-color: rgba(37,99,235,.36); box-shadow: var(--shadow); }
.service-icon { display: inline-block; margin-bottom: 12px; font-size: 2.35rem; }
.service-name { margin-bottom: 6px; font-size: 1.04rem; font-weight: 850; }
.service-desc { color: var(--muted); font-size: .88rem; }

.action-buttons { display: flex; gap: 12px; }
.action-buttons .btn { flex: 1; }

.modal-overlay { position: fixed; inset: 0; z-index: 2000; display: flex; align-items: center; justify-content: center; padding: 20px; background: rgba(2,6,23,.58); backdrop-filter: blur(10px); }
.modal-content { width: min(92vw, 560px); max-height: 88vh; overflow: auto; padding: 28px; border-radius: var(--radius-lg); }
.modal-content h3 { margin-bottom: 18px; font-size: 1.25rem; }

.admin-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 22px; padding: 18px 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-solid); box-shadow: var(--shadow-sm); }
.admin-header-left h1 { font-size: 1.55rem; line-height: 1.2; }
.admin-header-left p { color: var(--muted); font-size: .9rem; }
.admin-header-right { display: flex; gap: 18px; flex-wrap: wrap; }
.admin-info-item { display: flex; align-items: center; gap: 7px; font-weight: 750; }
.admin-info-label { color: var(--muted); }
.admin-info-value { color: var(--text); }
.admin-top-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .78fr); gap: 20px; margin-bottom: 20px; }
.admin-panel { min-height: 0; overflow: hidden; border-radius: var(--radius); }
.admin-panel + .admin-panel { margin-top: 20px; }
.admin-panel-header { display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--line); background: var(--panel-solid); font-weight: 850; }
.admin-panel-body { padding: 18px; }
.header-actions { display: flex; gap: 10px; margin-left: auto; }
.header-actions .btn { width: auto; min-height: 38px; padding: 8px 13px; }
.group-form-wrap { display: grid; grid-template-columns: 1fr 1fr auto; gap: 10px; margin-bottom: 14px; padding: 14px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel-muted); }
.group-form-wrap .btn { width: auto; white-space: nowrap; }

.table-container { width: 100%; max-height: 560px; overflow: auto; border: 1px solid var(--line); border-radius: 14px; background: var(--panel-solid); }
.compact-table, .full-user-table { width: 100%; border-collapse: collapse; font-size: .84rem; }
.full-user-table { min-width: 1080px; }
.compact-table th, .compact-table td, .full-user-table th, .full-user-table td { padding: 11px 10px; border-bottom: 1px solid var(--line); text-align: center; vertical-align: middle; white-space: nowrap; }
.compact-table th, .full-user-table th { position: sticky; top: 0; z-index: 2; background: var(--panel-solid); color: var(--muted); font-weight: 850; }
.compact-table tr:hover, .full-user-table tr:hover { background: rgba(37,99,235,.05); }
.compact-table select, .full-user-table select { min-width: 110px; padding: 7px 9px; }
.empty-state { padding: 34px 18px; color: var(--muted); text-align: center; }
.stats-info { display: flex; justify-content: flex-end; margin-bottom: 12px; color: var(--muted); font-size: .88rem; }
.status-badge { display: inline-flex; align-items: center; gap: 5px; margin-top: 4px; padding: 4px 9px; border-radius: 999px; font-size: .7rem; font-weight: 850; }
.status-badge::before { content: ''; width: 6px; height: 6px; border-radius: 999px; background: currentColor; }
.status-badge.active { color: var(--success); background: rgba(5,150,105,.10); }
.status-badge.inactive { color: var(--danger); background: rgba(220,38,38,.10); }
.status-badge.locked { color: var(--warning); background: rgba(217,119,6,.12); }
.user-info-cell { display: inline-flex; flex-direction: column; align-items: center; }
.user-info-cell .username { font-weight: 850; }

.message-card, .note-card { padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-solid); box-shadow: var(--shadow-sm); }
.note-title { margin-bottom: 8px; font-size: 1.22rem; font-weight: 850; }
.note-meta { margin-bottom: 12px; color: var(--muted); font-size: .86rem; }
.note-content { color: var(--text); white-space: pre-wrap; line-height: 1.78; }
.landing-intro { max-width: 760px; margin: 0 auto 28px; color: var(--muted); text-align: center; font-size: 1.02rem; }
.back-nav { margin-bottom: 18px; }

.footer { width: 100%; margin-top: auto; padding: 24px 18px; color: var(--muted); text-align: center; font-size: .88rem; }
.filing-info { display: flex; align-items: center; justify-content: center; gap: 18px; flex-wrap: wrap; margin-top: 10px; }
.filing-info a { display: inline-flex; align-items: center; gap: 5px; color: inherit; text-decoration: none; }
.filing-info a:hover { color: var(--primary); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(100,116,139,.35); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: rgba(37,99,235,.55); }

@media (max-width: 860px) {
  .container { padding: 22px 14px; align-items: flex-start; }
  .auth-card, .main-card { padding: 28px 20px; border-radius: 22px; }
  .admin-header, .action-buttons { flex-direction: column; align-items: stretch; }
  .admin-top-grid { grid-template-columns: 1fr; }
  .admin-header-right { flex-direction: column; gap: 8px; }
  .group-form-wrap { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .theme-toggle { top: 14px; right: 14px; width: 44px; height: 44px; }
  .floating-home-btn { right: 14px; bottom: 16px; width: 44px; height: 44px; }
  .info-row { flex-direction: column; gap: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}