:root{
  --bg:#f2f4f7;
  --card:#ffffff;
  --line:#dce1e8;
  --text:#1d2733;
  --muted:#6b7785;
  --brand:#0b6e99;
  --brand-d:#08597c;
  --ok:#1a8f4c;
  --warn:#c2410c;
  --danger:#c5283d;
  --shadow:0 1px 3px rgba(16,24,40,.08),0 1px 2px rgba(16,24,40,.04);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  background:var(--bg);color:var(--text);font-size:16px;line-height:1.5;
  padding-bottom:env(safe-area-inset-bottom);
}

/* ===== Header ===== */
.app-header{
  position:sticky;top:0;z-index:20;
  background:var(--brand);color:#fff;
  padding:calc(env(safe-area-inset-top) + 8px) 12px 8px;
  box-shadow:var(--shadow);
}
.header-row{display:flex;align-items:center;justify-content:space-between}
.header-row h1{font-size:18px;margin:0;font-weight:700;letter-spacing:.02em}
.header-actions{display:flex;gap:6px}
.aircraft-bar{display:flex;align-items:center;gap:8px;margin-top:10px}
.aircraft-bar label{font-size:13px;opacity:.9;flex:0 0 auto}
.aircraft-bar select{
  flex:1 1 auto;min-width:0;font-size:15px;padding:8px 10px;border-radius:8px;
  border:none;background:#fff;color:var(--text);
}
.aircraft-summary{font-size:12px;opacity:.92;margin-top:6px;min-height:16px}
.aircraft-summary b{font-weight:700}

/* ===== Buttons ===== */
button{font-family:inherit;cursor:pointer}
.primary-btn{background:var(--brand);color:#fff;border:none;border-radius:8px;padding:10px 14px;font-size:15px;font-weight:600}
.primary-btn:active{background:var(--brand-d)}
.ghost-btn{background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.5);border-radius:8px;padding:7px 10px;font-size:13px}
.view-head .primary-btn{padding:8px 12px;font-size:14px}
.icon-btn{background:transparent;border:none;color:#fff;font-size:20px;width:36px;height:36px;border-radius:8px}
.icon-btn:active{background:rgba(255,255,255,.18)}
.danger-btn{background:#fff;color:var(--danger);border:1px solid var(--danger);border-radius:8px;padding:9px 14px;font-size:14px;font-weight:600}
.secondary-btn{background:#eef2f6;color:var(--brand);border:1px solid var(--line);border-radius:8px;padding:9px 12px;font-size:14px;font-weight:600}

/* ===== Tabs ===== */
.tabs{display:flex;background:var(--card);border-bottom:1px solid var(--line);position:sticky;
  top:calc(env(safe-area-inset-top) + 96px);z-index:15}
.tab{flex:1;background:none;border:none;padding:9px 2px;font-size:12.5px;line-height:1.3;color:var(--muted);
  border-bottom:3px solid transparent;font-weight:600}
.tab.active{color:var(--brand);border-bottom-color:var(--brand)}

/* ===== Views ===== */
.view{display:none;padding:12px 12px 80px}
.view.active{display:block}
.view-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.view-head h2{font-size:16px;margin:0}

/* ===== Record list ===== */
.record-list{display:flex;flex-direction:column;gap:8px}
.record-card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 14px;box-shadow:var(--shadow)}
.record-card:active{background:#fafbfc}
.rc-top{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.rc-date{font-weight:700;font-size:15px}
.seq-badge{display:inline-flex;align-items:center;justify-content:center;min-width:22px;height:22px;padding:0 6px;margin-right:8px;background:var(--brand);color:#fff;border-radius:11px;font-size:13px;font-weight:700;vertical-align:middle}
.rc-sub{color:var(--muted);font-size:13px;margin-top:3px}
.rc-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:7px}
.tag{font-size:11px;background:#eaf3f8;color:var(--brand-d);border-radius:999px;padding:2px 8px}
.tag.warn{background:#fdecec;color:var(--danger)}
.tag.ok{background:#e7f4ec;color:var(--ok)}
.empty{color:var(--muted);text-align:center;padding:40px 10px;font-size:14px}
.empty small{display:block;margin-top:6px;font-size:12px}

/* ===== Modal ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(16,24,40,.45);z-index:50;display:flex;align-items:flex-end;justify-content:center}
.modal-overlay[hidden]{display:none}  /* hidden 属性を確実に効かせる */
.modal{background:var(--bg);width:100%;max-width:640px;max-height:92vh;border-radius:16px 16px 0 0;display:flex;flex-direction:column;overflow:hidden}
@media(min-width:641px){.modal-overlay{align-items:center}.modal{border-radius:16px;max-height:88vh}}
.modal-head{display:flex;align-items:center;justify-content:space-between;background:var(--brand);color:#fff;padding:14px 14px;flex:0 0 auto}
.modal-head h3{margin:0;font-size:16px}
.modal-head .icon-btn{font-size:24px;width:48px;height:48px;display:flex;align-items:center;justify-content:center;line-height:1;padding:0;border-radius:10px;flex:0 0 auto}
.modal-head .icon-btn:active{background:rgba(255,255,255,.25)}
.modal-body{padding:14px;overflow-y:auto;flex:1 1 auto;-webkit-overflow-scrolling:touch}
.modal-foot{display:flex;align-items:center;gap:8px;padding:10px 14px calc(10px + env(safe-area-inset-bottom));background:var(--card);border-top:1px solid var(--line);flex:0 0 auto}
.modal-foot .spacer{flex:1}

/* ===== Form ===== */
.field{margin-bottom:14px}
.field>label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:5px}
.field .hint{font-size:11px;color:var(--muted);font-weight:400;margin-left:6px}
.field input,.field select,.field textarea{
  width:100%;font-size:16px;padding:10px 11px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);
}
.field textarea{min-height:64px;resize:vertical}
.field.req>label::after{content:" *";color:var(--danger)}
.row2{display:flex;gap:10px}
.row2>.field{flex:1;min-width:0}
.inline-btn-row{display:flex;gap:8px;align-items:stretch}
.inline-btn-row input{flex:1;min-width:0}
.mini-btn{flex:0 0 auto;background:#eef2f6;border:1px solid var(--line);color:var(--brand);border-radius:8px;padding:0 12px;font-size:13px;font-weight:600;white-space:nowrap}
.mini-btn:active{background:#e2e8ee}
.section-label{font-size:13px;font-weight:700;color:var(--brand-d);margin:18px 0 8px;padding-bottom:4px;border-bottom:1px solid var(--line)}
.note-box{background:#fff7e6;border:1px solid #f0d499;color:#7a5b13;border-radius:8px;padding:10px 12px;font-size:12px;line-height:1.65;margin-bottom:14px}
.note-box a{color:var(--brand);font-weight:700;word-break:break-all}
.computed{background:#eef6fa;border:1px dashed #9cc6da;color:var(--brand-d);border-radius:8px;padding:9px 11px;font-size:14px;font-weight:600}

/* 飛行記録 上部の大きな時刻記録ボタン */
.bigtime-row{display:flex;gap:10px;margin-bottom:14px}
.bigtime{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:14px 8px;border:none;border-radius:12px;color:#fff;font-weight:700;box-shadow:var(--shadow)}
.bigtime .lbl{font-size:14px}
.bigtime .val{font-size:26px;font-variant-numeric:tabular-nums;letter-spacing:1px;line-height:1}
.bigtime.off{background:var(--brand)}
.bigtime.off:active{background:var(--brand-d)}
.bigtime.on{background:var(--ok)}
.bigtime.on:active{background:#14713c}

/* inspection grid */
.insp-item{display:flex;align-items:center;gap:8px;padding:9px 0;border-bottom:1px solid var(--line)}
.insp-item .name{flex:1;font-size:14px}
.insp-item .name small{display:block;color:var(--muted);font-size:11px;font-weight:400}
.seg{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;flex:0 0 auto}
.seg button{background:#fff;border:none;padding:7px 10px;font-size:13px;color:var(--muted);min-width:46px}
.seg button.on-ok{background:var(--ok);color:#fff}
.seg button.on-ng{background:var(--warn);color:#fff}

/* squawk repeat block */
.subcard{background:#fff;border:1px solid var(--line);border-radius:8px;padding:10px;margin-bottom:8px}
.subcard .sub-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.subcard .sub-head span{font-size:12px;font-weight:700;color:var(--muted)}
.subcard .remove{background:none;border:none;color:var(--danger);font-size:13px}

/* data sheet (action sheet) */
.sheet-list{display:flex;flex-direction:column;gap:0}
.sheet-list button{width:100%;text-align:left;background:#fff;border:none;border-bottom:1px solid var(--line);padding:15px 14px;font-size:15px;color:var(--text);display:flex;align-items:center;gap:10px}
.sheet-list button .desc{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.sheet-list button:active{background:#f2f4f7}

/* login */
.login-overlay{position:fixed;inset:0;background:var(--brand);z-index:100;display:flex;align-items:center;justify-content:center;padding:24px}
.login-overlay[hidden]{display:none}
.login-card{background:#fff;border-radius:16px;padding:28px 22px;max-width:360px;width:100%;text-align:center;box-shadow:0 8px 30px rgba(0,0,0,.25)}
.login-logo{font-size:24px;font-weight:800;color:var(--brand);margin-bottom:10px}
.login-lead{font-size:13px;color:var(--muted);margin:0 0 20px}
.login-priv{background:#eef6fa;border:1px solid #9cc6da;color:#2a5366;border-radius:8px;padding:9px 11px;font-size:11px;line-height:1.6;text-align:left;margin:0 0 14px}
.login-input{width:100%;font-size:16px;padding:12px;border:1px solid var(--line);border-radius:8px;margin-bottom:10px}
.login-primary{width:100%;padding:12px;font-size:15px;margin-bottom:8px}
.login-sub{width:100%;background:#eef2f6;color:var(--brand-d);border:1px solid var(--line);border-radius:8px;padding:10px;font-size:13px;font-weight:600;margin-bottom:6px}
.login-or{display:flex;align-items:center;text-align:center;color:var(--muted);font-size:12px;margin:14px 0}
.login-or::before,.login-or::after{content:"";flex:1;height:1px;background:var(--line)}
.login-or span{padding:0 10px}
.login-forgot{background:none;border:none;color:var(--brand);font-size:12px;text-decoration:underline;margin:2px 0 6px;padding:4px}
.login-hint{font-size:11px;color:var(--muted);margin-top:8px;line-height:1.5}
.google-btn{width:100%;background:#fff;color:#3c4043;border:1px solid #dadce0;border-radius:8px;padding:12px;font-size:15px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:10px}
.google-btn::before{content:"";width:18px;height:18px;background:no-repeat center/contain url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 48 48"><path fill="%234285F4" d="M45.12 24.5c0-1.56-.14-3.06-.4-4.5H24v8.51h11.84c-.51 2.75-2.06 5.08-4.39 6.64v5.52h7.11c4.16-3.83 6.56-9.47 6.56-16.17z"/><path fill="%2334A853" d="M24 46c5.94 0 10.92-1.97 14.56-5.33l-7.11-5.52c-1.97 1.32-4.49 2.1-7.45 2.1-5.73 0-10.58-3.87-12.31-9.07H4.34v5.7C7.96 41.07 15.4 46 24 46z"/><path fill="%23FBBC05" d="M11.69 28.18C11.25 26.86 11 25.45 11 24s.25-2.86.69-4.18v-5.7H4.34C2.85 17.09 2 20.45 2 24s.85 6.91 2.34 9.88l7.35-5.7z"/><path fill="%23EA4335" d="M24 10.75c3.23 0 6.13 1.11 8.41 3.29l6.31-6.31C34.91 4.18 29.93 2 24 2 15.4 2 7.96 6.93 4.34 14.12l7.35 5.7c1.73-5.2 6.58-9.07 12.31-9.07z"/></svg>')}
.google-btn:active{background:#f1f3f4}
.link-btn{background:none;border:none;color:var(--muted);font-size:13px;text-decoration:underline;margin-top:16px;padding:6px}
.login-error{color:var(--danger);font-size:12px;margin-top:12px;min-height:14px}
.login-legal{font-size:11px;color:var(--muted);margin-top:18px;line-height:1.6}
.login-legal a{color:var(--brand);text-decoration:underline}
.acct-row{display:flex;align-items:center;gap:8px;padding:12px 14px;background:#eef6fa;border-bottom:1px solid var(--line);font-size:13px}
.acct-row .who{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--brand-d);font-weight:600}
.acct-row .sync{font-size:11px;color:var(--muted)}

/* toast */
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translateX(-50%);
  background:#1d2733;color:#fff;padding:11px 18px;border-radius:999px;font-size:14px;z-index:120;box-shadow:0 4px 12px rgba(0,0,0,.25)}