/* ==========================================================
 * v20.css · 全局 UI 规范底座
 * 深色主题 + 渐变按钮 + 统一工具骨架(顶标题→参数→预览→操作)
 * 点数条 / 激励广告弹层 / 输出规格(比例·格式)
 * ========================================================== */

:root {
  --v20-bg: #121212;
  --v20-card: #1e1e1e;
  --v20-card2: #262626;
  --v20-line: #333;
  --v20-text: #ececec;
  --v20-text2: #b9b9b9;
  --v20-text3: #8a8a8a;
  --v20-grad: linear-gradient(135deg, #7b3fa0 0%, #e0408a 52%, #3f7fd0 100%);
  --v20-grad2: linear-gradient(135deg, #8a4fd0, #4f8fd0);
  --v20-gold: #d4af37;
}

/* 整站背景统一为深色(不影响既有工具交互类) */
body { background: var(--v20-bg); }

/* ============ 统一工具骨架 ============ */
.v20 { color: var(--v20-text); font-size: 13px; }
.v20-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; margin-bottom: 12px;
}
.v20-title { font-size: 16px; font-weight: 700; letter-spacing: .3px; }
.v20-title::before { content: ""; display: inline-block; width: 4px; height: 15px; background: var(--v20-grad); border-radius: 3px; margin-right: 8px; vertical-align: -2px; }

.pts-bar {
  display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--v20-text2);
  background: var(--v20-card2); border: 1px solid var(--v20-line); border-radius: 20px; padding: 5px 8px 5px 12px;
}
.pts-bar b { color: var(--v20-gold); font-size: 13px; min-width: 18px; text-align: center; }
.pts-add {
  border: none; background: var(--v20-grad2); color: #fff; font-size: 11.5px; font-weight: 600;
  border-radius: 16px; padding: 4px 10px; cursor: pointer;
}
.pts-add:active { transform: scale(.96); }

/* 输出规格行 */
.v20-out {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  background: var(--v20-card); border: 1px solid var(--v20-line); border-radius: 12px;
  padding: 10px 12px; margin-bottom: 12px;
}
.v20-out > span:first-child { font-size: 12px; color: var(--v20-text3); margin-right: 2px; }
.v20-out .chips { margin: 0; gap: 6px; }
.v20-out .chip { background: var(--v20-card2); border: 1px solid var(--v20-line); color: var(--v20-text2); padding: 4px 12px; border-radius: 16px; font-size: 12px; }
.v20-out .chip.on { background: var(--v20-grad); color: #fff; border-color: transparent; }

/* 参数面板 */
.v20-params { display: flex; flex-direction: column; gap: 12px; margin-bottom: 14px; }
.v20-params .row { display: flex; flex-direction: column; gap: 6px; }
.v20-params .row > label { font-size: 12.5px; color: var(--v20-text2); font-weight: 600; }
.v20-params .row .hint { font-size: 11px; color: var(--v20-text3); margin-top: 2px; }
.v20-params input[type=text], .v20-params input[type=number], .v20-params textarea, .v20-params select {
  width: 100%; background: var(--v20-card2); border: 1px solid var(--v20-line); color: var(--v20-text);
  border-radius: 9px; padding: 9px 11px; font-size: 13px; outline: none; font-family: inherit;
}
.v20-params textarea { resize: vertical; min-height: 56px; line-height: 1.5; }
.v20-params input:focus, .v20-params textarea:focus, .v20-params select:focus { border-color: var(--v20-gold); }
.v20-params input[type=range] { width: 100%; accent-color: #c060c0; }
.v20-params input[type=color] { width: 46px; height: 32px; padding: 2px; background: var(--v20-card2); border: 1px solid var(--v20-line); border-radius: 8px; }
.v20-params input[type=checkbox] { width: 18px; height: 18px; accent-color: #c060c0; }
.v20-params .switch { display: flex; align-items: center; gap: 8px; }

/* 通用 chips(参数内) */
.v20 .chips { display: flex; gap: 8px; flex-wrap: wrap; }
.v20 .chip { background: var(--v20-card2); border: 1px solid var(--v20-line); color: var(--v20-text2); padding: 7px 14px; border-radius: 18px; font-size: 12.5px; cursor: pointer; user-select: none; }
.v20 .chip.on { background: var(--v20-grad); color: #fff; border-color: transparent; font-weight: 600; }

/* 上传区 */
.v20 .dropzone {
  border: 1.5px dashed #4a4a4a; background: var(--v20-card2); border-radius: 12px;
  padding: 16px; text-align: center; cursor: pointer; color: var(--v20-text2);
}
.v20 .dropzone.over { border-color: var(--v20-gold); color: var(--v20-gold); }
.v20 .dropzone b { display: block; font-size: 13.5px; color: var(--v20-text); margin-bottom: 3px; }
.v20 .dropzone span { font-size: 11.5px; color: var(--v20-text3); }
.v20 .thumbs { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.v20 .thumb { position: relative; width: 64px; height: 64px; border-radius: 8px; overflow: hidden; border: 1px solid var(--v20-line); }
.v20 .thumb img { width: 100%; height: 100%; object-fit: cover; }
.v20 .thumb .num { position: absolute; left: 3px; top: 3px; background: rgba(0,0,0,.6); color: #fff; font-size: 10px; border-radius: 4px; padding: 0 4px; }
.v20 .thumb .del { position: absolute; right: 2px; top: 2px; width: 18px; height: 18px; border: none; border-radius: 50%; background: rgba(0,0,0,.65); color: #fff; font-size: 12px; line-height: 1; cursor: pointer; }

/* 实时预览画布 */
.v20-preview {
  background: var(--v20-card); border: 1px solid var(--v20-line); border-radius: 14px;
  padding: 12px; margin-bottom: 12px; text-align: center;
}
.v20-preview .pv-tip { font-size: 11px; color: var(--v20-text3); margin-bottom: 8px; }
.v20-preview canvas {
  max-width: 100%; max-height: 46vh; border-radius: 8px; background:
    repeating-conic-gradient(#2a2a2a 0% 25%, #1a1a1a 0% 50%) 50% / 20px 20px;
  box-shadow: 0 6px 24px rgba(0,0,0,.4);
}
.v20-legal { font-size: 11px; color: #9c8a55; background: rgba(212,175,55,.08); border: 1px solid rgba(212,175,55,.25); border-radius: 9px; padding: 8px 10px; line-height: 1.6; }

/* ============ 操作按钮 ============ */
.btn-grad {
  flex: 1; border: none; background: var(--v20-grad); color: #fff; font-size: 15px; font-weight: 700;
  border-radius: 12px; padding: 13px 0; cursor: pointer; letter-spacing: .5px;
  box-shadow: 0 6px 18px rgba(160,60,160,.28);
}
.btn-grad:active { transform: scale(.98); }
.btn-line {
  border: 1px solid var(--v20-gold); background: transparent; color: var(--v20-gold);
  font-size: 15px; font-weight: 600; border-radius: 12px; padding: 13px 18px; cursor: pointer;
}
.btn-line:active { transform: scale(.98); }
.sheet-foot { display: flex; gap: 10px; align-items: center; }

/* ============ 激励广告弹层 ============ */
.ad-mask { position: fixed; inset: 0; background: rgba(0,0,0,.72); z-index: 9999; display: flex; align-items: center; justify-content: center; padding: 24px; }
.ad-card { width: 100%; max-width: 320px; background: var(--v20-card); border: 1px solid var(--v20-line); border-radius: 16px; padding: 22px 20px; text-align: center; color: var(--v20-text); }
.ad-t { font-size: 16px; font-weight: 700; }
.ad-sub { font-size: 12.5px; color: var(--v20-text2); margin: 8px 0 14px; }
.ad-sub b { color: var(--v20-gold); }
.ad-timer { font-size: 34px; font-weight: 800; background: var(--v20-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ad-bar { height: 6px; background: var(--v20-card2); border-radius: 4px; overflow: hidden; margin: 12px 0 16px; }
.ad-bar i { display: block; height: 100%; width: 0; background: var(--v20-grad); transition: width 1s linear; }
.ad-note { font-size: 10.5px; color: var(--v20-text3); margin-top: 12px; line-height: 1.5; }

/* 通用文本输出(下标/昵称复制) */
.v20-out-box { background: var(--v20-card2); border: 1px solid var(--v20-line); border-radius: 10px; padding: 12px; font-size: 15px; word-break: break-all; line-height: 1.8; color: var(--v20-text); user-select: all; }
.v20-copy { margin-top: 10px; width: 100%; border: none; background: var(--v20-grad2); color: #fff; border-radius: 10px; padding: 11px 0; font-size: 13.5px; font-weight: 600; cursor: pointer; }