/* ============================================================
   HTML作品授权管理系统 — 全局样式
   ============================================================ */

:root {
  --c-bg: #f5f5f7;
  --c-surface: #ffffff;
  --c-border: #e5e5ea;
  --c-text: #1d1d1f;
  --c-text-secondary: #6e6e73;
  --c-primary: #0071e3;
  --c-primary-hover: #0077ed;
  --c-danger: #ff3b30;
  --c-danger-hover: #e0352b;
  --c-success: #34c759;
  --c-warning: #ff9500;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --transition: 0.2s ease;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-width: 1100px;
}

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

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ---- 按钮 ---- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px; border: none; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500; cursor: pointer;
  transition: all var(--transition); text-decoration: none;
  font-family: var(--font);
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,113,227,0.3); }
.btn-danger { background: var(--c-danger); color: #fff; }
.btn-danger:hover { background: var(--c-danger-hover); }
.btn-outline { background: transparent; color: var(--c-primary); border: 1px solid var(--c-primary); }
.btn-outline:hover { background: var(--c-primary); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }

/* ---- 输入框 ---- */
.input, .select {
  width: 100%; padding: 10px 14px;
  border: 1px solid var(--c-border); border-radius: var(--radius-sm);
  font-size: 14px; font-family: var(--font); background: var(--c-surface);
  transition: border-color var(--transition);
  outline: none; color: var(--c-text);
}
.input:focus, .select:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(0,113,227,0.1); }
.input::placeholder { color: #aeaeb2; }

/* ---- 表单 ---- */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; font-weight: 500; color: var(--c-text-secondary); margin-bottom: 6px; }

/* ---- 卡片 ---- */
.card {
  background: var(--c-surface); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); border: 1px solid var(--c-border);
  padding: 24px; margin-bottom: 16px;
}

/* ---- 标签 ---- */
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 20px;
  font-size: 11px; font-weight: 600; letter-spacing: 0.3px;
}
.badge-success { background: #e8f8ed; color: #1a7d3a; }
.badge-warning { background: #fff3e0; color: #b26500; }
.badge-danger { background: #fde8e8; color: #b91c1c; }
.badge-info { background: #e8f0fe; color: #1a56db; }

/* ---- 表格 ---- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--c-border); font-size: 14px; }
th { font-weight: 600; color: var(--c-text-secondary); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
tr:hover { background: #fafafa; }

/* ---- Modal ---- */
.modal-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,.3);
  z-index: 1000; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--c-surface); border-radius: var(--radius);
  padding: 32px; max-width: 540px; width: 90%;
  box-shadow: 0 20px 60px rgba(0,0,0,.15);
  animation: modalIn .2s ease;
}
@keyframes modalIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.modal h2 { font-size: 20px; margin-bottom: 20px; }
.modal-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 24px; }

/* ---- 统计卡片 ---- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--c-surface); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-sm); border: 1px solid var(--c-border); }
.stat-value { font-size: 28px; font-weight: 700; color: var(--c-primary); }
.stat-label { font-size: 13px; color: var(--c-text-secondary); margin-top: 4px; }

/* ---- Toast ---- */
.toast {
  position: fixed; top: 24px; right: 24px; z-index: 2000;
  padding: 14px 24px; border-radius: var(--radius-sm);
  background: var(--c-surface); box-shadow: var(--shadow);
  font-size: 14px; transform: translateX(120%);
  transition: transform .3s ease; max-width: 360px;
  border-left: 4px solid var(--c-primary);
}
.toast.show { transform: translateX(0); }
.toast.success { border-color: var(--c-success); }
.toast.error { border-color: var(--c-danger); }

/* ---- 加载动画 ---- */
.spinner {
  width: 20px; height: 20px; border: 2px solid var(--c-border);
  border-top-color: var(--c-primary); border-radius: 50%;
  animation: spin .6s linear infinite; display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- 空状态 ---- */
.empty { text-align: center; padding: 48px 24px; color: var(--c-text-secondary); }
.empty p { font-size: 15px; margin-bottom: 8px; }