/* =========================================================================
   鑽石參考價格計算器 —— 桌機版
   搭配 Views/Shared/_DiamondPriceCalc.cshtml 與 Scripts/diamond-price-calc.js

   本檔刻意不使用任何寬度斷點；每一個會顯示文字的選擇器都明確寫 font-size；
   所有規則都掛在 .dpc 前綴底下，並自帶色票與 reset，因此不依賴所在頁面的
   任何樣式，放到任何一頁看起來都一樣。
   ========================================================================= */

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

.dpc {
    --dpc-black: #303030;
    --dpc-white: #ffffff;
    --dpc-ivory: #f6f5f3;
    --dpc-stone: #eeecea;
    --dpc-line: #e2e0dd;
    --dpc-gold: #ad995a;
    --dpc-gold-dark: #8f7d47;
    --dpc-gold-line: #c3b183;
    --dpc-text: #303030;
    --dpc-muted: #5c5955;
    --dpc-muted-lt: #a39f9c;
    --dpc-sans: "Microsoft JhengHei", "微軟正黑體", "PingFang TC", "Heiti TC", "Helvetica Neue", Arial, sans-serif;
    --dpc-serif: "Cormorant Garamond", "Microsoft JhengHei", "微軟正黑體", "PingFang TC", serif;

    font-family: var(--dpc-sans);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.9;
    color: var(--dpc-text);
    text-align: left;

    border: 1px solid var(--dpc-gold-line);
    background: var(--dpc-ivory);
    padding: 44px 40px;
    margin-top: 40px;
}

.dpc .cs-head { text-align: center; margin-bottom: 30px; }
.dpc .cs-tag {
    display: inline-block; border: 1px solid var(--dpc-gold-line); color: var(--dpc-gold-dark);
    font-size: .72rem; letter-spacing: .18em; padding: 4px 12px; margin-bottom: 16px;
}
.dpc .cs-head strong {
    display: block; font-family: var(--dpc-serif); font-size: 1.5rem; font-weight: 500;
    color: var(--dpc-black); letter-spacing: .05em; margin-bottom: 10px; line-height: 1.5;
}
.dpc .cs-sub { font-size: .95rem; line-height: 1.9; color: var(--dpc-muted); }

.dpc .cs-fields { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 32px; }
.dpc .cs-field { display: block; }
.dpc .cs-label {
    display: block; font-size: .76rem; letter-spacing: .14em;
    color: var(--dpc-gold-dark); margin-bottom: 8px;
}
.dpc select {
    width: 100%; background: var(--dpc-white); border: 1px solid var(--dpc-line); color: var(--dpc-text);
    font-family: var(--dpc-sans); font-size: .95rem; line-height: 1.6; padding: 11px 12px; cursor: pointer;
}
.dpc select:focus { outline: 0; border-color: var(--dpc-gold); }

.dpc .cs-result { background: var(--dpc-white); border: 1px solid var(--dpc-line); padding: 28px 30px 24px; }
.dpc .cs-spec-label {
    text-align: center; font-size: .74rem; letter-spacing: .18em;
    color: var(--dpc-muted-lt); margin-bottom: 8px;
}
.dpc .cs-spec {
    text-align: center; font-family: var(--dpc-sans); font-size: 1.2rem;
    letter-spacing: .06em; color: var(--dpc-black); line-height: 1.5;
}
/* min-height 讓這行有沒有字都不會使版面跳動 */
.dpc .cs-note-line {
    min-height: 1.9em; text-align: center; font-size: .8rem; line-height: 1.6;
    color: var(--dpc-gold-dark); margin-top: 8px;
}

.dpc .cs-vs { display: grid; grid-template-columns: 1fr 34px 1fr; align-items: stretch; gap: 8px; }
.dpc .cs-box { padding: 20px 14px; text-align: center; min-width: 0; }
.dpc .cs-box.nat { background: var(--dpc-stone); }
.dpc .cs-box.lgd { background: var(--dpc-ivory); border: 1px solid var(--dpc-gold-line); }
.dpc .cs-box-lbl { font-size: .8rem; letter-spacing: .06em; margin-bottom: 8px; }
.dpc .cs-box.nat .cs-box-lbl { color: var(--dpc-muted); }
.dpc .cs-box.lgd .cs-box-lbl { color: var(--dpc-gold-dark); }
.dpc .cs-box-num {
    font-family: var(--dpc-sans); font-size: 1.45rem; font-weight: 700; line-height: 1.35;
    letter-spacing: .01em; white-space: nowrap;
    font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1;
}
.dpc .cs-box.nat .cs-box-num { color: var(--dpc-muted); }
.dpc .cs-box.lgd .cs-box-num { color: var(--dpc-gold-dark); font-weight: 700; }
.dpc .cs-box-num.cs-na {
    font-family: var(--dpc-sans); font-size: .92rem; font-weight: 400;
    white-space: normal; color: var(--dpc-muted);
}
.dpc .cs-box-note {
    min-height: 2.4em; font-size: .76rem; line-height: 1.6;
    color: var(--dpc-muted-lt); margin-top: 8px;
}
.dpc .cs-vsmark {
    align-self: center; text-align: center; font-size: .72rem;
    font-weight: 700; color: var(--dpc-gold);
}

.dpc .cs-foot {
    margin-top: 20px; font-size: .8rem; line-height: 1.9;
    color: var(--dpc-muted); text-align: center;
}
.dpc .cs-foot strong { font-size: .8rem; font-weight: 700; color: var(--dpc-gold-dark); }

.dpc .cs-ask { border-top: 1px solid var(--dpc-line); margin-top: 18px; padding-top: 22px; text-align: center; }
.dpc .cs-ask-title { font-size: .95rem; font-weight: 700; color: var(--dpc-black); margin-bottom: 8px; }
.dpc .cs-ask-text {
    font-size: .88rem; line-height: 1.9; color: var(--dpc-muted);
    max-width: 520px; margin: 0 auto;
}
.dpc .cs-ask-text strong { font-size: .88rem; font-weight: 700; color: var(--dpc-gold-dark); }
.dpc .cs-ask-btns { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-top: 18px; }
.dpc .cs-btn {
    display: inline-block; font-family: var(--dpc-sans); font-size: .82rem; letter-spacing: .1em;
    padding: 12px 26px; cursor: pointer; transition: .25s; text-decoration: none;
}
.dpc .cs-btn-ask { background: var(--dpc-gold); border: 1px solid var(--dpc-gold); color: #fff; }
.dpc .cs-btn-ask:hover { background: var(--dpc-gold-dark); border-color: var(--dpc-gold-dark); }

.dpc .cs-more { margin-top: 18px; text-align: center; }
.dpc .cs-more a {
    font-size: .9rem; letter-spacing: .04em; color: var(--dpc-gold-dark);
    border-bottom: 1px solid var(--dpc-gold-line); padding-bottom: 2px; text-decoration: none;
}