/* === NanoViz 基础样式系统 === */
* { font-family: 'Outfit', 'Noto Sans SC', sans-serif; margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg-primary: #11100e;
  --bg-secondary: #12121a;
  --bg-card: #1a1a24;
  --bg-card-hover: #222230;
  --accent-primary: #c8a45d;
  --accent-secondary: #c8a45d;
  --accent-gradient: #c8a45d;
  --text-primary: #ffffff;
  --text-secondary: #8b8b9e;
  --text-muted: #5a5a6e;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(200, 164, 93, 0.3);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(200, 164, 93, 0.15);
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;
}
html,
body {
  overflow-x: hidden;
}

body { background: var(--bg-primary); min-height: 100vh; color: var(--text-primary); }

/* 卡片 */
.glass-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 20px; box-shadow: var(--shadow-card); transition: all 0.3s ease; }
.glass-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-glow); }

/* 输入框 */
.input-field { background: var(--bg-secondary); border: 1px solid var(--border-color); color: var(--text-primary); border-radius: 12px; padding: 14px 16px; font-size: 14px; transition: all 0.3s ease; outline: none; width: 100%; }
.input-field:focus { border-color: var(--accent-primary); box-shadow: 0 0 0 3px rgba(200,164,93,0.1); }
.input-field::placeholder { color: var(--text-muted); }
.input-field.error { border-color: #ff6b6b; box-shadow: 0 0 0 3px rgba(255,107,107,0.1); }
.input-field.success { border-color: var(--accent-primary); }
select.input-field { cursor: pointer; }
select.input-field option { background: var(--bg-card); color: var(--text-primary); }

/* 按钮 */
.btn-primary { background: var(--accent-gradient); color: #000; border: none; border-radius: 12px; padding: 12px 20px; font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.3s ease; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(200,164,93,0.3); }
.btn-secondary { background: var(--bg-secondary); color: var(--text-secondary); border: 1px solid var(--border-color); border-radius: 12px; padding: 12px 20px; font-size: 14px; cursor: pointer; transition: all 0.3s ease; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.btn-secondary:hover { border-color: var(--border-hover); color: var(--text-primary); }
.btn-loading { pointer-events: none; opacity: 0.7; }

/* Toast */
.toast {
  position: fixed; top: 20px; right: 20px; z-index: 9999;
  padding: 14px 20px; border-radius: 12px; font-size: 14px; font-weight: 500;
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px); box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  transform: translateX(120%);
  animation: toastSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  display: flex; align-items: center; gap: 10px;
  min-width: 280px; max-width: 420px;
  border: 1px solid rgba(255,255,255,0.08);
  pointer-events: auto;
}
.toast.toast-hiding { animation: toastSlideOut 0.3s cubic-bezier(0.55, 0, 1, 0.45) forwards; }
@keyframes toastSlideIn { from { transform: translateX(120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes toastSlideOut { from { transform: translateX(0); opacity: 1; } to { transform: translateX(120%); opacity: 0; } }
.toast-success { background: rgba(200,164,93,0.15); border-color: rgba(200,164,93,0.3); color: #c8a45d; }
.toast-error { background: rgba(255,107,107,0.15); border-color: rgba(255,107,107,0.3); color: #ff6b6b; }
.toast-info { background: rgba(200,164,93,0.15); border-color: rgba(200,164,93,0.3); color: #c8a45d; }
.toast-warning { background: rgba(255,193,7,0.15); border-color: rgba(255,193,7,0.3); color: #ffc107; }

/* 弹窗覆盖层 */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.8); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); z-index: 8000; display: flex; align-items: center; justify-content: center; }
.modal-content { max-width: 90vw; max-height: 85vh; text-align: center; }
.modal-content img { max-width: 100%; max-height: 75vh; border-radius: 12px; box-shadow: 0 20px 60px rgba(0,0,0,0.6); }
.modal-close { position: absolute; top: 20px; right: 20px; width: 40px; height: 40px; border-radius: 50%; background: var(--bg-card); border: 1px solid var(--border-color); color: var(--text-secondary); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 18px; z-index: 1001; transition: all 0.3s ease; }
.modal-close:hover { background: var(--bg-card-hover); color: #fff; }
.project-delete-overlay { position: fixed; inset: 0; z-index: 9000; display: flex; align-items: center; justify-content: center; padding: 20px; background: rgba(0,0,0,0.72); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.project-delete-dialog { width: min(520px, 100%); border: 1px solid var(--border-color); border-radius: 14px; background: var(--bg-card); box-shadow: 0 24px 80px rgba(0,0,0,0.5); padding: 22px; color: var(--text-primary); }
.project-delete-icon { width: 42px; height: 42px; display: flex; align-items: center; justify-content: center; border-radius: 12px; background: rgba(255, 92, 92, 0.12); color: #ff8a8a; margin-bottom: 14px; }
.project-delete-dialog h2 { font-size: 18px; font-weight: 750; margin: 0 0 8px; }
.project-delete-dialog p { color: var(--text-secondary); font-size: 14px; margin: 0 0 16px; }
.project-delete-options { display: grid; gap: 10px; }
.project-delete-option { width: 100%; text-align: left; border: 1px solid var(--border-color); border-radius: 12px; background: var(--bg-secondary); color: var(--text-primary); padding: 14px; cursor: pointer; transition: all 0.2s ease; }
.project-delete-option:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }
.project-delete-option strong { display: flex; align-items: center; gap: 8px; font-size: 14px; margin-bottom: 5px; }
.project-delete-option span { display: block; color: var(--text-muted); font-size: 12px; line-height: 1.6; }
.project-delete-option.danger { border-color: rgba(255, 92, 92, 0.28); }
.project-delete-option.danger:hover { border-color: rgba(255, 92, 92, 0.62); background: rgba(255, 92, 92, 0.08); }
.project-delete-cancel { width: 100%; margin-top: 12px; border: 0; border-radius: 10px; background: transparent; color: var(--text-secondary); padding: 10px; cursor: pointer; }
.project-delete-cancel:hover { color: var(--text-primary); background: rgba(255,255,255,0.04); }

/* 工具 */
.brand-logo { display: inline-block; height: 28px; width: auto; object-fit: contain; vertical-align: middle; flex-shrink: 0; }
.brand-logo-xl { height: 42px; }
.brand-logo-sm { height: 24px; }
.brand-logo-lg { height: 56px; }
.brand-logo-mark { height: 40px; width: 40px; object-fit: contain; }
.hidden { display: none !important; }
.fade-section { animation: fadeIn 0.3s ease-out; }
.icp-link {
  color: inherit;
  text-decoration: none;
}
.icp-link:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* 提示词复制格式菜单 */
.prompt-copy-menu {
  position: absolute;
  z-index: 9000;
  min-width: 140px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: var(--shadow-card);
  padding: 4px;
  display: flex;
  flex-direction: column;
}
.prompt-copy-item {
  text-align: left;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-primary);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
}
.prompt-copy-item:hover { background: var(--bg-secondary); color: var(--accent-primary); }