@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Share+Tech+Mono&display=swap');
:root {
  --bg:#f5f7fa; --s1:#ffffff; --s2:#f0f2f5; --s3:#e8ecf1;
  --bd:#c8d0da; --ac:#1a73e8; --ac2:#e65100; --ok:#2e7d32; --ng:#c62828; --warn:#f57f17;
  --tx:#1a1a2e; --tx2:#4a5568; --tx3:#718096;
  --girder:#2d3748; --beam2:#1a73e8; --beam3:#718096; --subcol:#e65100; --col:#3182ce;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--tx);font-family:'Noto Sans JP',sans-serif;min-height:100vh;overflow-x:hidden}
body::before{content:'';position:fixed;inset:0;background-image:linear-gradient(rgba(26,115,232,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(26,115,232,.04) 1px,transparent 1px);background-size:40px 40px;pointer-events:none;z-index:0}

/* ===== Header ===== */
header{position:relative;z-index:10;border-bottom:1px solid var(--bd);background:linear-gradient(180deg,var(--s1),var(--s2));padding:12px 24px;display:flex;align-items:center;gap:12px;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.logo{width:36px;height:36px;flex-shrink:0;background:linear-gradient(135deg,var(--ac),#1565c0);clip-path:polygon(50% 0%,100% 25%,100% 75%,50% 100%,0% 75%,0% 25%);display:flex;align-items:center;justify-content:center;font-family:'Share Tech Mono',monospace;font-size:11px;color:#fff;font-weight:700}
header h1{font-size:16px;font-weight:700;letter-spacing:.1em;color:var(--ac);text-shadow:none}
header .ver{font-size:9px;color:var(--tx3);letter-spacing:.14em;font-family:'Share Tech Mono',monospace;margin-top:2px}

/* ===== Main Layout ===== */
.app{position:relative;z-index:1;display:grid;grid-template-columns:440px 1fr;grid-template-rows:auto 1fr;height:calc(100vh - 56px);overflow:hidden}

/* ===== Step Nav (Top Bar) ===== */
.step-nav{grid-column:1/-1;display:flex;align-items:center;gap:0;background:var(--s1);border-bottom:1px solid var(--bd);padding:0 8px;height:44px;overflow-x:auto}
.step-btn{padding:8px 16px;cursor:pointer;font-size:11px;font-weight:500;letter-spacing:.06em;color:var(--tx3);border:none;background:none;white-space:nowrap;position:relative;transition:all .2s}
.step-btn.active{color:var(--ac);font-weight:700}
.step-btn.active::after{content:'';position:absolute;bottom:0;left:8px;right:8px;height:2px;background:var(--ac);border-radius:1px}
.step-btn.done{color:var(--ok)}
.step-btn.done::before{content:'✓ ';font-size:10px}
.step-btn:hover:not(.active){color:var(--tx2)}
.step-sep{width:20px;text-align:center;color:var(--tx3);font-size:10px;flex-shrink:0}
.step-select{display:block;width:100%;max-width:440px;padding:8px 12px;font-size:13px;font-weight:600;color:var(--ac);background:var(--s1);border:1px solid var(--bd);border-radius:4px;cursor:pointer}
.step-select:focus{outline:none;border-color:var(--ac)}
/* ステップナビはドロップダウンに統一（ボタン非表示） */
.step-nav{padding:6px 12px;overflow:visible}
.step-nav .step-btn{display:none}
.step-nav .step-sep{display:none}

/* ===== Left Panel ===== */
.left{overflow-y:auto;border-right:1px solid var(--bd);background:var(--s1);padding:0}
.left::-webkit-scrollbar{width:4px}
.left::-webkit-scrollbar-thumb{background:var(--bd);border-radius:2px}
.panel{margin:8px;background:var(--s2);border:1px solid var(--bd);border-radius:8px;overflow:hidden}
.panel-hdr{padding:10px 14px;background:var(--s3);border-bottom:1px solid var(--bd);display:flex;align-items:center;gap:7px;font-size:10px;font-weight:700;letter-spacing:.1em;color:var(--ac);text-transform:uppercase}
.panel-hdr .dot{width:5px;height:5px;background:var(--ac);border-radius:50%}
.panel-body{padding:12px 14px}
.form-group{margin-bottom:10px}
.form-group label{display:block;font-size:10px;font-weight:500;color:var(--tx2);margin-bottom:4px;letter-spacing:.04em}
input[type=number],input[type=text],input[type=date],select,textarea{width:100%;padding:6px 8px;background:#fff;border:1px solid var(--bd);border-radius:4px;color:var(--tx);font-size:12px;font-family:'Share Tech Mono',monospace}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--ac);box-shadow:0 0 0 2px rgba(26,115,232,.15)}
.input-unit{display:flex;align-items:center;gap:0}
.input-unit input{border-radius:4px 0 0 4px;border-right:none}
.input-unit .unit{padding:6px 8px;background:var(--s3);border:1px solid var(--bd);border-radius:0 4px 4px 0;font-size:10px;color:var(--tx3);font-family:'Share Tech Mono',monospace;white-space:nowrap}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.btn{padding:8px 16px;border:1px solid var(--bd);border-radius:6px;cursor:pointer;font-size:11px;font-weight:600;letter-spacing:.06em;transition:all .2s;font-family:'Noto Sans JP',sans-serif}
.btn-primary{background:linear-gradient(135deg,var(--ac),#1565c0);color:#fff;border-color:var(--ac)}
.btn-primary:hover{box-shadow:0 2px 8px rgba(26,115,232,.35)}
.btn-secondary{background:var(--s2);color:var(--tx2);border-color:var(--bd)}
.btn-secondary:hover{background:var(--s3);color:var(--tx)}
.btn-sm{padding:4px 10px;font-size:10px}
.info-box{background:rgba(26,115,232,.06);border:1px solid rgba(26,115,232,.18);border-radius:6px;padding:8px 12px;font-size:10px;color:var(--tx2);line-height:1.6}
.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:9px;font-weight:700;font-family:'Share Tech Mono',monospace}
.badge-ok{background:rgba(46,125,50,.08);color:var(--ok);border:1px solid rgba(46,125,50,.25)}
.badge-ng{background:rgba(198,40,40,.08);color:var(--ng);border:1px solid rgba(198,40,40,.25)}
.badge-info{background:rgba(26,115,232,.08);color:var(--ac);border:1px solid rgba(26,115,232,.25)}

/* ===== Right Panel (Canvas) ===== */
.right{position:relative;background:var(--bg);display:flex;flex-direction:column;overflow:hidden}
.canvas-toolbar{display:flex;align-items:center;gap:6px;padding:6px 12px;background:var(--s1);border-bottom:1px solid var(--bd);flex-wrap:wrap;min-height:38px}
.canvas-toolbar .tool-btn{padding:4px 10px;font-size:10px;border:1px solid var(--bd);border-radius:4px;background:var(--s2);color:var(--tx2);cursor:pointer;transition:all .15s;white-space:nowrap}
.canvas-toolbar .tool-btn.active{border-color:var(--ac);background:rgba(26,115,232,.1);color:var(--ac)}
.canvas-toolbar .tool-btn:hover:not(.active){background:var(--s3);color:var(--tx)}
.canvas-wrap{flex:1;position:relative;overflow:hidden}
canvas#main-canvas{display:block;width:100%;height:100%;cursor:default}
.canvas-info{position:absolute;bottom:6px;left:10px;font-size:12px;color:var(--tx3);font-family:'Share Tech Mono',monospace;pointer-events:none}
.canvas-cursor{position:absolute;bottom:6px;right:10px;font-size:12px;color:var(--ac);font-family:'Share Tech Mono',monospace;pointer-events:none}
.view-btns{display:flex;gap:2px}
.view-btns button{padding:3px 8px;font-size:9px;border:1px solid var(--bd);border-radius:3px;background:var(--s2);color:var(--tx3);cursor:pointer;font-family:'Share Tech Mono',monospace}
.view-btns button.active{border-color:var(--ac);color:var(--ac)}

/* ===== Table Styles ===== */
.tbl-wrap{overflow-x:auto;margin:8px 0}
table.data-tbl{width:100%;border-collapse:collapse;font-size:13px;font-family:'Share Tech Mono',monospace}
table.data-tbl th{background:var(--s3);color:var(--tx2);font-weight:600;font-size:11px;letter-spacing:.06em;padding:8px 10px;border:1px solid var(--bd);text-align:left;white-space:nowrap;position:sticky;top:0;z-index:1}
table.data-tbl td{padding:6px 10px;border:1px solid var(--bd);color:var(--tx);vertical-align:middle}
table.data-tbl tr:hover{background:rgba(26,115,232,.06)}
table.data-tbl td input{width:100%;min-width:76px;padding:3px 4px;background:transparent;border:1px solid transparent;border-radius:2px;color:var(--tx);font-size:13px;font-family:'Share Tech Mono',monospace}
table.data-tbl td input:focus{border-color:var(--ac);background:#fff}
table.data-tbl td select{padding:2px 4px;background:#fff;border:1px solid var(--bd);border-radius:2px;color:var(--tx);font-size:10px}
.tbl-badge{display:inline-block;padding:1px 6px;border-radius:8px;font-size:8px;font-weight:700}

/* ===== Step Content Visibility ===== */
.step-content{display:none}
.step-content.active{display:block}

/* ===== Scrollbar ===== */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--bd);border-radius:3px}

/* ===== PDF Modal ===== */
.pdf-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:1000;display:none;align-items:center;justify-content:center}
.pdf-modal-overlay.active{display:flex}
.pdf-modal{background:var(--s2);border:1px solid var(--bd);border-radius:12px;padding:24px;width:360px;max-width:90vw}
.pdf-modal h3{color:var(--ac);font-size:14px;margin-bottom:16px;font-weight:700}
.pdf-modal .form-group{margin-bottom:12px}
.pdf-modal .form-group label{display:block;font-size:11px;font-weight:500;color:var(--tx2);margin-bottom:6px;letter-spacing:.04em}
.pdf-modal .radio-group{display:flex;flex-direction:column;gap:8px}
.pdf-modal .radio-item{display:flex;align-items:center;gap:8px}
.pdf-modal .radio-item input[type=radio]{cursor:pointer;width:14px;height:14px}
.pdf-modal .radio-item label{margin:0;cursor:pointer;font-size:11px;color:var(--tx)}
.pdf-modal .btn-group{display:flex;gap:8px;margin-top:20px}
.pdf-modal .btn-group button{flex:1;padding:10px;border:1px solid var(--bd);border-radius:6px;cursor:pointer;font-size:11px;font-weight:600;font-family:'Noto Sans JP',sans-serif;transition:all .2s}
.pdf-modal .btn-primary-modal{background:linear-gradient(135deg,var(--ac),#1565c0);color:#fff;border-color:var(--ac)}
.pdf-modal .btn-primary-modal:hover{box-shadow:0 2px 8px rgba(26,115,232,.35)}
.pdf-modal .btn-cancel{background:var(--s1);color:var(--tx2);border-color:var(--bd)}
.pdf-modal .btn-cancel:hover{background:var(--s2);color:var(--tx)}

/* ===== PDF Container (for rendering) ===== */
#pdf-container{display:none;position:fixed;top:-9999px;left:-9999px;width:210mm;background:white;color:#000}
.pdf-page{width:210mm;height:297mm;background:white;color:#000;padding:15mm;box-sizing:border-box;page-break-after:always;font-family:'Noto Sans JP',sans-serif}
.pdf-page h1{font-size:28px;font-weight:700;margin-bottom:12px;text-align:center}
.pdf-page h2{font-size:18px;font-weight:700;margin-top:20px;margin-bottom:10px;border-bottom:2px solid #000;padding-bottom:6px}
.pdf-page h3{font-size:14px;font-weight:600;margin-top:16px;margin-bottom:8px}
.pdf-page table{width:100%;border-collapse:collapse;margin:12px 0;font-size:10px}
.pdf-page table th{background:#e0e0e0;color:#000;font-weight:700;padding:6px;border:1px solid #000;text-align:left}
.pdf-page table td{padding:4px 6px;border:1px solid #ccc}
.pdf-page .info-table{margin:12px 0}
.pdf-page .approval-section{margin-top:30px;text-align:center}
.pdf-page .approval-box{display:inline-block;margin:0 20px;text-align:center}
.pdf-page .stamp-box{width:60px;height:80px;border:2px solid #666;display:inline-block;margin:10px 0;vertical-align:top}
.pdf-page .footer{font-size:9px;text-align:center;color:#666;margin-top:20px;border-top:1px solid #ccc;padding-top:10px}
.pdf-page .cover-title{text-align:center;margin:40px 0}
.pdf-page .cover-item{margin:10px 0;font-size:12px}
.pdf-page .cover-label{font-weight:600;width:80px;display:inline-block}
.pdf-page .cover-value{display:inline-block}

/* ===== Mode Switching ===== */
body[data-mode="columns"] #mode-home,
body[data-mode="columns"] #app-flat { display: none !important; }
body[data-mode="columns"] #app-columns { display: grid; }

body[data-mode="flat"] #mode-home,
body[data-mode="flat"] #app-columns { display: none !important; }
body[data-mode="flat"] #app-flat { display: flex; }

body[data-mode="home"] #app-columns,
body[data-mode="home"] #app-flat { display: none !important; }
body[data-mode="home"] #mode-home { display: flex; }

/* ===== Home (Mode Selection) Screen ===== */
#mode-home{position:relative;z-index:1;width:100%;min-height:calc(100vh - 56px);display:flex;align-items:center;justify-content:center;padding:40px 20px;background:var(--bg);overflow-y:auto}
.mode-home-inner{max-width:980px;width:100%}
.mode-home-title{text-align:center;margin-bottom:40px}
.mode-home-title h2{font-size:22px;color:var(--tx);letter-spacing:.08em;margin-bottom:8px;font-weight:700}
.mode-home-title p{color:var(--tx3);font-size:13px}
.mode-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media (max-width:720px){.mode-cards{grid-template-columns:1fr}}
.mode-card{background:var(--s1);border:1px solid var(--bd);border-radius:12px;padding:28px;cursor:pointer;transition:all .2s;text-align:center;display:flex;flex-direction:column;align-items:center}
.mode-card:hover{border-color:var(--ac);box-shadow:0 4px 20px rgba(26,115,232,.15);transform:translateY(-2px)}
.mode-card h3{font-size:18px;color:var(--tx);margin:8px 0;font-weight:700;letter-spacing:.04em}
.mode-card p{font-size:12px;color:var(--tx2);line-height:1.7}
.mode-card-diagram{height:130px;display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.mode-card-diagram svg{max-height:100%;width:auto}
.mode-card-tag{display:inline-block;background:rgba(26,115,232,.08);color:var(--ac);border:1px solid rgba(26,115,232,.25);border-radius:10px;padding:2px 10px;font-size:10px;font-weight:700;letter-spacing:.06em;margin-top:8px}
.mode-card-tag.new{background:rgba(230,81,0,.08);color:var(--ac2);border-color:rgba(230,81,0,.25)}

/* Flat Frame Mode のスタイルは flat.css に分離 */