:root{
  --teal:#1f6f8b;
  --teal-d:#15536b;
  --teal-l:#7fb1c5;
  --bg:#eef6f8;
  --surface:#ffffff;
  --surface-2:#f5fafc;
  --ink:#0f2a36;
  --muted:#5b7783;
  --line:#d6e4ea;
  --green:#3aa55c;
  --yellow:#e9a13b;
  --red:#d65a5a;
  --shadow:0 4px 16px rgba(31,111,139,.08);
  --radius:14px;
  --board-bg:linear-gradient(180deg,#dff0f5,#f5fafc);
  --board-card:#ffffff;
  --board-card-border:#cfe2e9;
  --board-text:#0f2a36;
  --board-sub:#5b7783;
  --board-light-bg:#f5fafc;
  --board-light-border:#e1ecf0;
  --pill-arrived-bg:#e8f6ec;--pill-arrived-fg:#205a31;
  --pill-scheduled-bg:#eef3f7;--pill-scheduled-fg:#46627a;
  --pill-delayed-bg:#fff3df;--pill-delayed-fg:#7a4a00;
  --pill-cancelled-bg:#fdecec;--pill-cancelled-fg:#7d2222;
}
html.dark{
  --bg:#0a1820;
  --surface:#15293a;
  --surface-2:#1c3447;
  --ink:#e6f1f6;
  --muted:#9fb6c1;
  --line:#27425a;
  --shadow:0 4px 16px rgba(0,0,0,.35);
  --board-bg:linear-gradient(180deg,#0a2030,#143348);
  --board-card:rgba(255,255,255,.06);
  --board-card-border:rgba(255,255,255,.1);
  --board-text:#ffffff;
  --board-sub:rgba(230,241,246,.7);
  --board-light-bg:rgba(255,255,255,.05);
  --board-light-border:rgba(255,255,255,.08);
  --pill-arrived-bg:rgba(58,165,92,.18);--pill-arrived-fg:#9bdcb1;
  --pill-scheduled-bg:rgba(127,177,197,.18);--pill-scheduled-fg:#bde2ee;
  --pill-delayed-bg:rgba(233,161,59,.18);--pill-delayed-fg:#f4cf8a;
  --pill-cancelled-bg:rgba(214,90,90,.18);--pill-cancelled-fg:#f1a8a8;
}
html,body{transition:background-color .25s ease,color .25s ease}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:-apple-system,"Noto Sans TC",sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--teal);text-decoration:none}
a:hover{color:var(--teal-d)}
.container{max-width:960px;margin:0 auto;padding:0 16px}
.muted{color:var(--muted)}
.small{font-size:.85rem}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:.75rem;background:var(--surface-2);color:var(--teal-d)}

/* Theme toggle button */
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:transparent;border:1px solid var(--line);cursor:pointer;font-size:1.1rem;color:var(--ink);padding:0}
.theme-toggle:hover{background:var(--surface-2)}

/* Header */
.site-header{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;gap:12px}
.brand{display:flex;align-items:center;gap:8px;color:var(--teal-d);font-weight:700}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:8px;background:var(--teal);color:#fff;font-weight:800}
.brand-name{font-size:1.05rem}
.site-nav{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.site-nav a{color:var(--ink);font-size:.95rem}
.site-nav a:hover{color:var(--teal)}
.site-nav .btn{padding:6px 12px}

/* Main / footer */
.site-main{min-height:calc(100vh - 140px);padding:20px 0 60px}
.site-footer{padding:20px 0;border-top:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:.85rem;text-align:center}

.flashes{margin:8px 0}
.flash{padding:10px 14px;border-radius:10px;margin:8px 0;background:#fff;border:1px solid var(--line)}
.flash-success{background:#e8f6ec;border-color:#bfe5cd;color:#205a31}
.flash-error{background:#fdecec;border-color:#f4c2c2;color:#7d2222}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:10px;background:var(--teal);color:#fff;border:none;cursor:pointer;font-size:.95rem;font-weight:600}
.btn:hover{background:var(--teal-d);color:#fff}
.btn.ghost{background:transparent;color:var(--teal);border:1px solid var(--teal-l)}
.btn.ghost:hover{background:#e6eef2;color:var(--teal-d)}
.btn.danger{background:var(--red)}
.btn.small{padding:4px 10px;font-size:.85rem}
.btn.block{display:flex;width:100%;justify-content:center}

/* Cards */
.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:18px}
.card h2,.card h3{margin-top:0}
.row{display:flex;flex-wrap:wrap;gap:14px}
.row > *{flex:1 1 240px;min-width:0}

/* Hero / dashboard top */
.hero{background:linear-gradient(135deg,var(--teal),var(--teal-d));color:#fff;border-radius:var(--radius);padding:22px;margin-bottom:18px;box-shadow:var(--shadow)}
.hero h1{margin:0 0 6px;font-size:1.5rem}
.hero .meta{opacity:.85;font-size:.9rem}
.hero-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-top:14px}
.hero-tile{background:rgba(255,255,255,.12);backdrop-filter:blur(6px);padding:12px;border-radius:10px}
.hero-tile .label{font-size:.78rem;opacity:.85}
.hero-tile .val{font-size:1.2rem;font-weight:700;margin-top:4px}

/* Signal lights */
.lights{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px}
.light{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;background:var(--surface);border:1px solid var(--line)}
.light .dot{width:14px;height:14px;border-radius:50%}
.light .dot.green{background:var(--green);box-shadow:0 0 0 4px rgba(58,165,92,.15)}
.light .dot.yellow{background:var(--yellow);box-shadow:0 0 0 4px rgba(233,161,59,.15)}
.light .dot.red{background:var(--red);box-shadow:0 0 0 4px rgba(214,90,90,.15)}
.light .icon{font-size:1.4rem;width:1.6em;text-align:center}
.light .name{font-size:.95rem;font-weight:600}
.light .label{font-size:.75rem;color:var(--muted)}

.cat-section{margin-top:14px}
.cat-title{display:flex;align-items:center;gap:8px;margin:0 0 10px;font-size:1.05rem}
.cat-title .ic{font-size:1.2rem}

/* Ferries */
.ferries{list-style:none;padding:0;margin:0}
.ferry{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px dashed var(--line)}
.ferry:last-child{border-bottom:none}
.ferry .pill{padding:2px 8px;border-radius:999px;font-size:.78rem;font-weight:600}
.pill.arrived{background:var(--pill-arrived-bg);color:var(--pill-arrived-fg)}
.pill.scheduled{background:var(--pill-scheduled-bg);color:var(--pill-scheduled-fg)}
.pill.delayed{background:var(--pill-delayed-bg);color:var(--pill-delayed-fg)}
.pill.cancelled{background:var(--pill-cancelled-bg);color:var(--pill-cancelled-fg)}

/* Combos */
.combo{display:flex;justify-content:space-between;align-items:center;padding:14px;background:var(--surface);border:1px solid var(--line);border-radius:12px;margin-bottom:10px}
.combo .left{display:flex;gap:12px;align-items:center}
.combo .ic{font-size:1.7rem}
.combo .name{font-weight:700}
.combo .desc{color:var(--muted);font-size:.85rem;margin-top:2px}

/* Forms */
.form{display:grid;gap:12px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:.9rem;color:var(--ink);min-width:0}
.form input[type=text],.form input[type=email],.form input[type=tel],.form input[type=password],.form input[type=number],.form input[type=date],.form select,.form textarea{
  width:100%;max-width:100%;min-width:0;padding:10px;border:1px solid var(--line);border-radius:10px;font-size:1rem;background:var(--surface);color:var(--ink)
}
.form textarea{min-height:80px;resize:vertical}
.form .grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px;min-width:0}
.form .grid2 > *{min-width:0}
.form .actions{display:flex;gap:10px;margin-top:6px;flex-wrap:wrap}
@media(max-width:480px){
  .form .grid2{grid-template-columns:1fr}
}

/* Tables */
table.table{width:100%;border-collapse:collapse;background:var(--surface);border-radius:12px;overflow:hidden}
table.table th,table.table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;font-size:.92rem;vertical-align:middle;color:var(--ink)}
table.table th{background:var(--surface-2);color:var(--teal-d)}

/* QR / order */
.qr-wrap{display:flex;flex-direction:column;align-items:center;gap:10px;padding:18px;background:var(--surface);border-radius:14px;border:1px solid var(--line)}
.qr-wrap img{max-width:240px;border-radius:8px;background:#fff;padding:6px}

/* Admin layout */
.admin-shell{display:grid;grid-template-columns:220px 1fr;gap:18px;align-items:start}
.admin-side{background:var(--surface);border-radius:12px;padding:14px;box-shadow:var(--shadow);position:sticky;top:80px}
.admin-side a{display:block;padding:8px 10px;border-radius:8px;color:var(--ink);font-size:.95rem;margin-bottom:2px}
.admin-side a.active,.admin-side a:hover{background:var(--surface-2);color:var(--teal-d)}
.admin-content{min-width:0}
@media(max-width:760px){
  .admin-shell{grid-template-columns:1fr}
  .admin-side{position:relative;top:0}
}

/* Board (店內看板) */
.board{min-height:100vh;background:var(--board-bg);color:var(--board-text);padding:24px;transition:background .3s,color .3s}
.board-topbar{display:flex;justify-content:flex-end;gap:8px;margin-bottom:8px}
.board-topbar a,.board-topbar button{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:8px;background:var(--board-card);border:1px solid var(--board-card-border);color:var(--board-text);font-size:.9rem;cursor:pointer;text-decoration:none}
.board-topbar a:hover,.board-topbar button:hover{background:var(--surface-2)}
.board-header{display:flex;justify-content:space-between;align-items:flex-end;border-bottom:1px solid var(--board-card-border);padding-bottom:14px;margin-bottom:18px}
.board-title{font-size:2rem;font-weight:800;color:var(--board-text)}
.board-sub{color:var(--board-sub);font-size:.95rem;margin-top:4px}
.board-clock{font-size:2.4rem;font-weight:700;letter-spacing:1px;color:var(--board-text)}
.board-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.board-card{background:var(--board-card);border:1px solid var(--board-card-border);border-radius:16px;padding:18px}
.board-card h3{margin:0 0 10px;font-size:1.15rem;color:var(--teal-d)}
html.dark .board-card h3{color:#bde2ee}
.board-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;margin-top:8px}
.board-light{display:flex;align-items:center;gap:10px;padding:10px;border-radius:10px;background:var(--board-light-bg);border:1px solid var(--board-light-border);color:var(--board-text)}
.board-light .ic{font-size:1.6rem}
.board-light .name{font-weight:700;font-size:1rem}
.board-light .lab{font-size:.78rem;color:var(--board-sub)}
.board-light.green{border-left:6px solid var(--green)}
.board-light.yellow{border-left:6px solid var(--yellow)}
.board-light.red{border-left:6px solid var(--red)}
.board-summary{display:flex;gap:14px;margin:8px 0 16px}
.board-summary .b{flex:1;background:var(--board-card);border:1px solid var(--board-card-border);padding:14px;border-radius:12px;text-align:center;color:var(--board-text)}
.board-summary .b .n{font-size:2rem;font-weight:800}
.board-summary .b.g .n{color:var(--green)}
.board-summary .b.y .n{color:var(--yellow)}
.board-summary .b.r .n{color:var(--red)}
.board .ferry{border-bottom:1px dashed var(--board-card-border);color:var(--board-text)}
.board .ferry .small{color:var(--board-sub)}

@media(max-width:760px){
  .board-row{grid-template-columns:1fr}
  .board-clock{font-size:1.4rem}
  .board-title{font-size:1.4rem}
}