/* style.css —— 打磨版: 暗色 / 移动端优先 / 三档配色 / 截图友好 */

:root {
  --bg: #12141f;
  --panel: #1f2236;       /* 卡片底色, 比截图背景 #1a1c30 略亮, 能读出"卡片感" */
  --panel-2: #262a42;     /* 输入框等次级面板 */
  --text: #e8eaf2;
  --muted: #9aa0bd;
  --line: #343a5c;
  --accent: #6c8cff;      /* 中性强调(按钮/聚焦), 三档色覆盖 */
}

* { box-sizing: border-box; }
[hidden] { display: none; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  padding: 1.25rem 1rem 2.5rem;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

#app {
  max-width: 460px;
  margin: 0 auto;
}

h1 {
  margin: .25rem 0 .25rem;
  font-size: 1.9rem;
  letter-spacing: -.01em;
}

.sub {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: .95rem;
}
.sub b { color: var(--text); }

/* ---------- 表单 ---------- */
#calc label {
  display: block;
  margin-bottom: 1.1rem;
  font-weight: 600;
  font-size: .95rem;
}

#calc label small {
  display: block;
  margin-top: .3rem;
  font-weight: 400;
  color: var(--muted);
  font-size: .8rem;
}

input[type=number] {
  display: block;
  width: 100%;
  margin-top: .4rem;
  padding: .7rem .8rem;
  font-size: 1rem;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  -webkit-appearance: none;
  appearance: none;
}

input[type=number]::placeholder { color: #6b7196; }

input:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

fieldset {
  margin: 0 0 1.1rem;
  padding: .8rem 1rem 1rem;
  border: 1px solid var(--line);
  border-radius: 10px;
}

legend {
  padding: 0 .4rem;
  font-weight: 600;
  font-size: .95rem;
}

fieldset label {
  margin-bottom: .4rem;
  font-weight: 400;
  cursor: pointer;
}
fieldset label:last-child { margin-bottom: 0; }

.checkbox {
  font-weight: 400 !important;
  cursor: pointer;
}

input[type=radio],
input[type=checkbox] {
  accent-color: var(--accent);
  margin-right: .4rem;
}

#calc button[type=submit] {
  display: block;
  width: 100%;
  margin-top: .5rem;
  padding: .85rem 1rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 12px;
  cursor: pointer;
}
#calc button[type=submit]:hover { filter: brightness(1.08); }

.error {
  margin: .75rem 0 0;
  color: #ff7a7a;
  font-weight: 600;
  font-size: .9rem;
}

/* ---------- 结果区 ---------- */
#result { margin-top: 1.75rem; }

/* 卡片本体: html2canvas 截的就是 #card, 必须自成完整美观竖版卡片 */
#card {
  position: relative;
  padding: 2rem 1.5rem 1.75rem;
  text-align: center;
  background: var(--panel);
  border-radius: 18px;
  border-top: 6px solid var(--line);     /* 三档色覆盖此顶边 */
  box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
  overflow: hidden;
}

/* 三档配色: 顶边 + emoji/结论/概率条 强调色 */
#card[data-tier=pull] { border-top-color: #2ecc71; --tier: #2ecc71; }
#card[data-tier=wait] { border-top-color: #f1c40f; --tier: #f1c40f; }
#card[data-tier=skip] { border-top-color: #e74c3c; --tier: #e74c3c; }

#verdict-emoji {
  font-size: 3rem;
  line-height: 1;
  margin-bottom: .5rem;
}

#verdict-line {
  margin: 0 auto .9rem;
  max-width: 18ch;
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.01em;
  text-wrap: balance;
  color: var(--tier, var(--text));
}

/* 概率条: 圆角轨道 + 强调色填充, 宽度由 JS 内联设置, 此处不设宽度 */
.bar {
  height: 12px;
  margin: 0 0 .55rem;
  background: var(--panel-2);
  border-radius: 999px;
  overflow: hidden;
}

#bar-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--tier, var(--accent));
  transition: width .6s ease;
}

#prob-text {
  margin: 0 0 1.1rem;
  font-size: .95rem;
  font-weight: 600;
  color: var(--muted);
}

#reasons {
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
  text-align: left;
}

#reasons li {
  position: relative;
  margin-bottom: .5rem;
  padding-left: 1.25rem;
  font-size: .92rem;
  color: var(--text);
  line-height: 1.45;
}

#reasons li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--tier, var(--accent));
}

#reasons li:last-child { margin-bottom: 0; }

.watermark {
  margin: 0;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--muted);
  opacity: .75;
}

/* ---------- 分享按钮 + 算法说明(卡片外) ---------- */
#share {
  display: block;
  width: 100%;
  margin-top: 1rem;
  padding: .85rem 1rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: #12141f;
  background: #fff;
  border: 0;
  border-radius: 12px;
  cursor: pointer;
}
#share:hover { filter: brightness(.94); }

.algo {
  display: block;
  margin-top: .9rem;
  text-align: center;
  font-size: .78rem;
  color: var(--muted);
  line-height: 1.4;
}