/* ============================================================
   JWT Decoder 頁面樣式（jwt.io 風格雙欄除錯器）
   配色：Header #fb015b / Payload #7c3aed / Signature #0891b2
   ============================================================ */

.jwt-page{--jwt-h:#fb015b;--jwt-p:#7c3aed;--jwt-s:#0891b2;--jwt-ink:#111827;--jwt-soft:#f8fafc;background:#fff}
.jwt-page main{background:linear-gradient(180deg,#fff 0%,#fbfcfe 45%,#fff 100%)}
.jwt-page [hidden]{display:none!important}
.jwt-page .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* --- Hero --- */
.jwt-page .tool-hero{padding:20px 0 10px}
.jwt-page .jwt-hero-copy{display:flex;flex-direction:column;align-items:flex-start}
.jwt-page .tool-hero .eyebrow{display:inline-flex;padding:7px 13px;border-radius:999px;background:#f1ebff;color:#6d28d9;font-size:12px;font-weight:800;margin-bottom:12px}
.jwt-page .tool-hero h1{font-size:clamp(30px,4vw,44px);line-height:1.2;margin:0 0 12px;letter-spacing:0}
.jwt-page .tool-hero h1 .hl{background:linear-gradient(transparent 62%,rgba(124,58,237,.22) 62%)}
.jwt-page .tool-hero p{font-size:16px;line-height:1.7;color:var(--muted);max-width:760px;margin:0}
.jwt-mode-tabs{display:inline-flex;gap:4px;margin-top:22px;padding:5px;border:1px solid #e4eaf2;border-radius:12px;background:#fff;box-shadow:0 10px 24px rgba(17,24,39,.05)}
.jwt-mode-tabs button{min-width:132px;border:0;border-radius:8px;background:transparent;color:#475569;padding:10px 16px;font-size:13px;font-weight:900}
.jwt-mode-tabs button.active{background:#111827;color:#fff}
.jwt-mode-tabs button:focus-visible,.jwt-btn:focus-visible,.jwt-verify-row input:focus-visible,.jwt-field input:focus-visible,.jwt-field textarea:focus-visible{outline:3px solid rgba(8,145,178,.22);outline-offset:2px}

/* --- 主除錯器：雙欄 --- */
.jwt-tool{padding:22px 0 40px}
.jwt-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;align-items:start}

.jwt-panel{border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:0 8px 26px rgba(17,24,39,.05);overflow:hidden}
.jwt-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 18px;border-bottom:1px solid var(--line);background:#fbfcfe}
.jwt-panel-head h2{margin:0;font-size:15px;font-weight:800;letter-spacing:.01em}
.jwt-panel-head .sub{margin:2px 0 0;font-size:11px;color:var(--muted)}
.jwt-panel-actions{display:flex;gap:8px;flex-wrap:wrap}
.jwt-btn{border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 12px;font-size:12px;font-weight:800;color:#3f4b5d;transition:.15s;white-space:nowrap}
.jwt-btn:hover{background:#fff5ce;color:var(--ink)}
.jwt-btn.primary{background:var(--jwt-p);border-color:var(--jwt-p);color:#fff}
.jwt-btn.primary:hover{filter:brightness(1.05);color:#fff}
.jwt-action-row{display:flex;gap:10px;flex-wrap:wrap;padding:14px 18px;border-top:1px solid var(--line);background:#fff}

/* --- 左：Encoded 輸入 --- */
.jwt-input{width:100%;min-height:290px;resize:vertical;border:0;outline:0;padding:18px;font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-size:13.5px;line-height:1.7;color:#334155;background:#fff;word-break:break-all}
.jwt-input::placeholder{color:#b6c0cc}

/* Encoded 彩色預覽（點解碼後顯示 token 三段配色） */
.jwt-colorized{padding:16px 18px;border-top:1px dashed var(--line);font-family:"SFMono-Regular",Consolas,Menlo,monospace;font-size:13px;line-height:1.7;word-break:break-all;background:#fbfcfe}
.jwt-colorized:empty{display:none}
.jwt-colorized .seg-h{color:var(--jwt-h);font-weight:700}
.jwt-colorized .seg-p{color:var(--jwt-p);font-weight:700}
.jwt-colorized .seg-s{color:var(--jwt-s);font-weight:700}
.jwt-colorized .seg-dot{color:#94a3b8}

/* --- 右：Decoded 三段 --- */
.jwt-decoded{display:flex;flex-direction:column;gap:16px}
.jwt-seg{border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:0 8px 26px rgba(17,24,39,.05);overflow:hidden}
.jwt-seg-head{display:flex;align-items:center;gap:9px;padding:13px 18px;border-bottom:1px solid var(--line)}
.jwt-seg-head .dot{width:10px;height:10px;border-radius:50%;flex:none}
.jwt-seg-head h3{margin:0;font-size:13px;font-weight:800;letter-spacing:.04em;text-transform:uppercase}
.jwt-seg-head .hint{margin-left:auto;font-size:11px;color:var(--muted)}
.jwt-seg.header .dot{background:var(--jwt-h)}
.jwt-seg.payload .dot{background:var(--jwt-p)}
.jwt-seg.signature .dot{background:var(--jwt-s)}
.jwt-seg.header .jwt-seg-head h3{color:var(--jwt-h)}
.jwt-seg.payload .jwt-seg-head h3{color:var(--jwt-p)}
.jwt-seg.signature .jwt-seg-head h3{color:var(--jwt-s)}
.jwt-seg pre{margin:0;padding:16px 18px;font-family:"SFMono-Regular",Consolas,Menlo,monospace;font-size:13px;line-height:1.65;color:#1e293b;white-space:pre-wrap;word-break:break-word;overflow-x:auto;min-height:52px}
.jwt-seg.header pre{background:linear-gradient(180deg,rgba(251,1,91,.03),transparent)}
.jwt-seg.payload pre{background:linear-gradient(180deg,rgba(124,58,237,.03),transparent)}

/* Payload 人類可讀宣告表 */
.jwt-claims{border-top:1px dashed var(--line);padding:12px 18px}
.jwt-claims:empty{display:none}
.jwt-claim{display:flex;justify-content:space-between;gap:14px;padding:6px 0;font-size:12.5px;border-bottom:1px solid #f1f5f9}
.jwt-claim:last-child{border-bottom:0}
.jwt-claim .k{color:var(--muted);font-weight:700;white-space:nowrap}
.jwt-claim .v{color:#1e293b;text-align:right;word-break:break-word}
.jwt-claim .v.warn{color:#dc2626;font-weight:700}
.jwt-claim .v.ok{color:#16a34a;font-weight:700}

/* Signature 驗證區 */
.jwt-sig-body{padding:14px 18px}
.jwt-sig-note{display:flex;align-items:flex-start;gap:8px;font-size:12.5px;line-height:1.6;color:var(--muted)}
.jwt-checkbox{display:inline-flex;align-items:center;gap:8px;margin-top:10px;color:#475569;font-size:12.5px;font-weight:700}
.jwt-checkbox input{accent-color:var(--jwt-s)}
.jwt-verify-row{display:flex;gap:8px;margin-top:12px}
.jwt-verify-row input{flex:1;min-width:0;border:1px solid var(--line);border-radius:10px;padding:9px 12px;font-size:13px;outline:0}
.jwt-verify-row input:focus{border-color:var(--jwt-s)}
.jwt-verify-status{margin:10px 0 0;font-size:12.5px;font-weight:700}
.jwt-verify-status.ok{color:#16a34a}
.jwt-verify-status.bad{color:#dc2626}

/* 狀態列 */
.jwt-status{margin:14px 0 0;font-size:13px;font-weight:700;min-height:20px}
.jwt-status.ok{color:#16a34a}
.jwt-status.bad{color:#dc2626}

/* --- Encoder --- */
.jwt-input-grid{display:grid;gap:14px;padding:18px}
.jwt-field{display:grid;gap:8px;font-size:12.5px;font-weight:800;color:#334155}
.jwt-field input,.jwt-field textarea{width:100%;border:1px solid var(--line);border-radius:8px;background:#fff;color:#1e293b;outline:0}
.jwt-field input{height:42px;padding:0 12px}
.jwt-mini-input{min-height:112px;resize:vertical;padding:13px;font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-size:13px;line-height:1.6}
.jwt-mini-input.tall{min-height:190px}
.jwt-output-token{display:block;width:100%;min-height:380px;resize:vertical;border:0;outline:0;padding:18px;font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-size:13.5px;line-height:1.7;color:#334155;background:#fff;word-break:break-all}
.jwt-encoder .jwt-panel{min-height:100%}

/* --- SEO 內容區 --- */
.jwt-seo{padding:10px 0 24px}
.jwt-seo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.jwt-seo-card{border:1px solid var(--line);border-radius:8px;background:#fff;padding:22px;box-shadow:0 6px 20px rgba(17,24,39,.04)}
.jwt-seo-card .ic{display:inline-grid;place-items:center;min-width:44px;height:36px;padding:0 10px;border-radius:8px;background:#f1ebff;color:#6d28d9;font-size:15px;font-weight:900;margin-bottom:12px;font-family:"SFMono-Regular",Consolas,monospace}
.jwt-seo-card:nth-child(1) .ic{background:#fff0f5;color:var(--jwt-h)}
.jwt-seo-card:nth-child(3) .ic{background:#e8fbfd;color:var(--jwt-s)}
.jwt-seo-card h2{font-size:17px;margin:0 0 10px}
.jwt-seo-card p,.jwt-seo-card li{font-size:13.5px;line-height:1.7;color:#475569}
.jwt-seo-card ol,.jwt-seo-card ul{margin:0;padding-left:18px}
.jwt-seo-card li{margin:6px 0}

.jwt-band{background:linear-gradient(180deg,#faf7ff,#fff);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:38px 0}
.jwt-faq{max-width:820px;margin:auto}
.jwt-faq h2{font-size:24px;text-align:center;margin:0 0 22px}
.jwt-faq details{border:1px solid var(--line);border-radius:8px;background:#fff;padding:0;margin-bottom:12px;overflow:hidden}
.jwt-faq summary{cursor:pointer;padding:16px 20px;font-weight:800;font-size:15px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.jwt-faq summary::-webkit-details-marker{display:none}
.jwt-faq summary::after{content:"+";font-size:22px;color:var(--jwt-p);font-weight:400}
.jwt-faq details[open] summary::after{content:"-"}
.jwt-faq .a{padding:0 20px 18px;font-size:14px;line-height:1.75;color:#475569}

/* --- Long-form SEO guide --- */
.jwt-guide{padding:24px 0 48px;background:#fff}
.jwt-guide-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:34px;align-items:start}
.jwt-toc{position:sticky;top:94px;display:grid;gap:5px;padding:18px;border:1px solid var(--line);border-radius:8px;background:#fbfcfe}
.jwt-toc strong{margin-bottom:8px;color:#111827;font-size:13px}
.jwt-toc a{padding:8px 10px;border-radius:8px;color:#475569;font-size:13px;font-weight:700}
.jwt-toc a:hover{background:#fff5ce;color:#111827}
.jwt-article{max-width:880px}
.jwt-article>.eyebrow{margin:0 0 12px}
.jwt-article h2{margin:0 0 18px;color:#111827;font-size:clamp(26px,3.2vw,38px);line-height:1.28;letter-spacing:0}
.jwt-article h3{margin:34px 0 10px;color:#111827;font-size:22px;line-height:1.35}
.jwt-article p,.jwt-article li{color:#475569;font-size:15.5px;line-height:1.9}
.jwt-article p{margin:0 0 15px}
.jwt-article ul{margin:0;padding-left:22px}
.jwt-article li{margin:7px 0}
.jwt-article code{padding:2px 6px;border-radius:6px;background:#f1f5f9;color:#0f172a;font-family:"SFMono-Regular",Consolas,monospace;font-size:.92em}
.jwt-table-wrap{margin:18px 0 24px;overflow-x:auto;border:1px solid var(--line);border-radius:8px;background:#fff}
.jwt-table{width:100%;border-collapse:collapse;min-width:680px;font-size:14px}
.jwt-table th,.jwt-table td{padding:13px 15px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.jwt-table th{background:#f8fafc;color:#111827;font-weight:800}
.jwt-table tbody tr:last-child td{border-bottom:0}
.jwt-checklist{margin:18px 0 24px;padding:18px 20px;border:1px solid #fed7aa;border-left:4px solid #f59e0b;border-radius:8px;background:#fffbeb}
.jwt-checklist strong{display:block;margin-bottom:8px;color:#111827;font-size:14px}
.jwt-source-note{margin-top:24px!important;padding-top:16px;border-top:1px solid var(--line);font-size:14px!important;color:#64748b!important}
.jwt-source-note a{font-weight:800;color:#0f766e}

/* --- 響應式 --- */
@media(max-width:900px){
  .jwt-layout{grid-template-columns:1fr}
  .jwt-seo-grid{grid-template-columns:1fr}
  .jwt-guide-layout{grid-template-columns:1fr}
  .jwt-toc{position:static}
}
@media(max-width:620px){
  .jwt-mode-tabs{display:grid;grid-template-columns:1fr 1fr;width:100%}
  .jwt-mode-tabs button{min-width:0;padding:10px 8px}
  .jwt-panel-head{align-items:flex-start;flex-direction:column}
  .jwt-action-row,.jwt-verify-row{flex-direction:column}
  .jwt-btn{width:100%}
  .jwt-input,.jwt-output-token{min-height:260px}
  .jwt-claim{display:block}
  .jwt-claim .v{display:block;text-align:left;margin-top:3px}
}

/* RTL 微調 */
[dir="rtl"] .jwt-claim .v{text-align:left}
[dir="rtl"] .jwt-seg-head .hint{margin-left:0;margin-right:auto}