/* ===== Appearance system: switch via <html data-appearance="..."> ===== */
:root, :root[data-appearance="slate"]{
  --bg:#f4f6f8; --bg-grad:none; --panel:#ffffff; --panel-2:#eef1f4;
  --ink:#1f2933; --muted:#64748b; --line:#e2e8f0; --grid-line:#eef1f5; --grid-hour:#e2e8f0;
  --accent:#3a6ea5; --accent-ink:#ffffff; --accent-soft:#e7eef7; --block-ink:#24303d;
  --r:9px; --r-sm:8px; --btn-r:8px;
  --shadow:0 1px 2px rgba(15,23,42,.05); --shadow-lg:0 6px 18px rgba(15,23,42,.09);
  --round:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif; color-scheme:light;
}
:root[data-appearance="paper"]{
  --bg:#fbfbfa; --bg-grad:none; --panel:#ffffff; --panel-2:#f3f3f1;
  --ink:#191919; --muted:#6b6b6b; --line:#e6e6e4; --grid-line:#f0f0ee; --grid-hour:#e6e6e4;
  --accent:#1a1a1a; --accent-ink:#ffffff; --accent-soft:#efefee; --block-ink:#222222;
  --r:5px; --r-sm:5px; --btn-r:5px;
  --shadow:0 1px 0 rgba(0,0,0,.05); --shadow-lg:0 2px 8px rgba(0,0,0,.07);
  --round:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif; color-scheme:light;
}
:root[data-appearance="forest"]{
  --bg:#f2f5f0; --bg-grad:radial-gradient(1000px 480px at 100% -10%, #e6efe4 0%, transparent 58%); --panel:#ffffff; --panel-2:#e9eee4;
  --ink:#232a24; --muted:#6d766a; --line:#dde3d7; --grid-line:#eef2ea; --grid-hour:#dde3d7;
  --accent:#2f7d5b; --accent-ink:#ffffff; --accent-soft:#e3efe8; --block-ink:#23302a;
  --r:11px; --r-sm:9px; --btn-r:9px;
  --shadow:0 1px 3px rgba(35,55,40,.06); --shadow-lg:0 8px 20px rgba(35,55,40,.10);
  --round:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif; color-scheme:light;
}
:root[data-appearance="azure"]{
  --bg:#ffffff; --bg-grad:radial-gradient(1000px 460px at 100% -10%, #e9f8fc 0%, transparent 56%); --panel:#ffffff; --panel-2:#eef6f9;
  --ink:#14181b; --muted:#5b6266; --line:#e7edf0; --grid-line:#f0f5f7; --grid-hour:#e7edf0;
  --accent:#12a7c9; --accent-ink:#ffffff; --accent-soft:#e3f7fc; --block-ink:#1c2a2e;
  --r:12px; --r-sm:10px; --btn-r:999px;
  --shadow:0 1px 3px rgba(20,60,70,.06); --shadow-lg:0 8px 22px rgba(20,60,70,.10);
  --round:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif; color-scheme:light;
}
:root[data-appearance="warm"]{
  --bg:#faf5ef; --bg-grad:radial-gradient(1100px 520px at 0% -12%, #ffeede 0%, transparent 60%),radial-gradient(900px 480px at 100% 0%, #fff2e0 0%, transparent 58%); --panel:#ffffff; --panel-2:#f4ede3;
  --ink:#43392f; --muted:#9a8d7d; --line:#efe6d9; --grid-line:#f4ece0; --grid-hour:#e9dccb;
  --accent:#e8714b; --accent-ink:#ffffff; --accent-soft:#ffe7dc; --block-ink:#4a3d31;
  --r:16px; --r-sm:12px; --btn-r:999px;
  --shadow:0 2px 8px rgba(80,55,30,.07); --shadow-lg:0 10px 24px rgba(80,55,30,.14);
  --round:ui-rounded,"SF Pro Rounded","Hiragino Maru Gothic ProN",system-ui,-apple-system,"Segoe UI",sans-serif; color-scheme:light;
}
:root[data-appearance="midnight"]{
  --bg:#0f1216; --bg-grad:none; --panel:#171b21; --panel-2:#1e242c;
  --ink:#e6eaef; --muted:#8b95a1; --line:#2a313a; --grid-line:#1a2029; --grid-hour:#232b35;
  --accent:#6ea8fe; --accent-ink:#0f1216; --accent-soft:#1e2a3b; --block-ink:#12161d;
  --r:8px; --r-sm:8px; --btn-r:8px;
  --shadow:0 1px 3px rgba(0,0,0,.4); --shadow-lg:0 10px 28px rgba(0,0,0,.45);
  --round:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif; color-scheme:dark;
}
*{box-sizing:border-box}
body{margin:0;background-color:var(--bg);background-image:var(--bg-grad);color:var(--ink);font-family:var(--round);-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;font-family:var(--round)}
button{border:0;background:var(--accent);color:var(--accent-ink);padding:9px 18px;border-radius:var(--btn-r);cursor:pointer;font-weight:700;transition:transform .08s ease,box-shadow .15s ease,background .15s ease}
button:hover{transform:translateY(-1px)}
button:active{transform:translateY(0)}
button:disabled{opacity:.5;cursor:default;transform:none}
.quiet{background:var(--panel);color:var(--ink);border:1.5px solid var(--line);font-weight:600;box-shadow:var(--shadow)}
.quiet:hover{border-color:var(--accent);color:var(--accent)}
.primary{background:var(--accent);color:var(--accent-ink)}
.danger{background:transparent;color:#e26d5c;border:1.5px solid #f0b8af;font-weight:600}
input,select,textarea{padding:10px 13px;border-radius:var(--r-sm);border:1.5px solid var(--line);background:var(--panel);color:var(--ink);transition:border-color .15s ease}
input:focus,select:focus,textarea:focus{border-color:var(--accent);outline:none}
[hidden]{display:none!important}
:focus-visible{outline:2.5px solid var(--accent);outline-offset:2px}

/* Login */
#login{min-height:100vh;display:grid;place-items:center;padding:24px}
.login-card{max-width:440px;text-align:center;background:var(--panel);padding:44px 36px;border-radius:26px;box-shadow:var(--shadow-lg)}
.eyebrow{font-size:11px;letter-spacing:.18em;color:var(--accent);font-weight:800;margin:0}
.login-card h1{font-size:42px;letter-spacing:-1px;margin:14px 0 6px;font-weight:800}
.login-card h1::before{content:"📊  "}
.login-card p{color:var(--muted);line-height:1.6;font-size:16px}
#gbtn{display:flex;justify-content:center;margin:24px 0 8px}
#message{font-size:13px;color:#e26d5c;min-height:18px;font-weight:600}

/* Workspace fills the viewport; header + summary take their natural height, the
   board flexes into whatever is left so the panels always reach the bottom. */
#workspace:not([hidden]){display:flex;flex-direction:column;height:100vh;overflow:hidden}

/* App bar */
.app-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:14px 22px;background:var(--panel);box-shadow:var(--shadow);position:relative;z-index:5;flex:none}
.brand{font-size:22px;font-weight:800;letter-spacing:-.5px;display:flex;align-items:center;gap:2px}
.brand::before{content:"📊";margin-right:8px;font-size:20px}
.brand span{color:var(--accent)}
.cur-ctl{display:flex;align-items:center;gap:8px;color:var(--muted);font-weight:600;font-size:13px;margin-left:8px}
.cur-ctl select{padding:7px 10px}
.status{margin-left:auto;color:var(--accent);font-size:12.5px;font-weight:700;min-width:60px;text-align:right}
.top-actions{display:flex;gap:10px;flex-wrap:wrap}

/* Summary */
.summary{display:flex;gap:12px;flex-wrap:wrap;padding:14px 22px 2px;flex:none}
.sum-tile{display:flex;align-items:center;gap:16px;background:var(--panel);border:1.5px solid var(--line);border-radius:999px;padding:8px 18px;box-shadow:var(--shadow);font-size:13px}
.sum-cur{font-weight:800;letter-spacing:.02em}
.sum-pair{font-weight:700}
.sum-pair em{font-style:normal;color:var(--muted);font-size:11px;letter-spacing:.1em;margin-right:6px}
.sum-pair small{color:var(--muted);font-weight:600}

/* Board */
.board{display:flex;align-items:stretch;gap:18px;padding:12px 22px 22px;flex:1 1 auto;min-height:0}
#bank{width:280px;flex:none;padding:20px;height:100%;overflow-y:auto;background:var(--panel);border-radius:var(--r);box-shadow:var(--shadow)}
#bank h2{font-size:13px;margin:0 0 14px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);font-weight:800}
#add-card{display:grid;grid-template-columns:1fr 84px;gap:9px;align-items:center}
#add-card #card-name{grid-column:1/3}
#add-card input,#add-card button{min-width:0}
#add-card button{padding-left:0;padding-right:0;white-space:nowrap}
.bank-hint{font-size:12.5px;color:var(--muted);line-height:1.55;margin:14px 0}
#bank-list{display:flex;flex-direction:column;gap:10px}
.bank-card{display:flex;align-items:center;gap:11px;padding:12px 13px;border-radius:14px;background:var(--panel-2);cursor:grab;box-shadow:var(--shadow);transition:transform .1s ease,box-shadow .15s ease}
.bank-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.bank-card:active{cursor:grabbing;transform:scale(.99)}
.bank-card .dot{width:14px;height:14px;border-radius:50%;flex:none;box-shadow:inset 0 0 0 1px rgba(0,0,0,.06)}
.bc-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.bank-card .nm{font-size:14.5px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bc-meta{font-size:11px;color:var(--muted);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bank-card .ef{font-size:12px;color:var(--ink);font-weight:800;background:var(--panel);padding:3px 9px;border-radius:999px;flex:none}
.bank-card .x{background:transparent;color:var(--muted);border:0;padding:2px 6px;font-size:16px;box-shadow:none;font-weight:700;flex:none}
.bank-card .x:hover{color:#e26d5c;transform:none}
#bank.drop-on{outline:2.5px dashed var(--accent);outline-offset:-4px}

/* Recipients */
#recipients{flex:1;height:100%;overflow:auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:16px;align-content:start}
.empty{grid-column:1/-1;text-align:center;color:var(--muted);background:var(--panel);border:2px dashed var(--line);border-radius:var(--r);padding:48px 24px}
.empty p{margin:0 0 16px;font-size:15px}
.recipient{background:var(--panel);border-radius:var(--r);box-shadow:var(--shadow);padding:16px;display:flex;flex-direction:column;gap:14px}
.recipient>header{display:flex;align-items:center;gap:10px}
.rec-title{display:flex;align-items:baseline;gap:10px;flex:1;min-width:0}
.rec-title strong{font-size:17px;font-weight:800;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rec-cur{font-size:12px;color:var(--muted);font-weight:700;background:var(--panel-2);padding:2px 9px;border-radius:999px;flex:none}
.rec-edit{padding:5px 12px;font-size:12.5px}
.buckets{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.bucket{background:var(--panel-2);border:1.5px solid transparent;border-radius:var(--r-sm);padding:12px;display:flex;flex-direction:column;gap:9px;min-height:120px;transition:border-color .12s ease,background .12s ease}
.bucket.drop-on{border-color:var(--accent);background:var(--accent-soft)}
.bucket.over{border-color:#e9b9b0}
.bucket-head{display:flex;align-items:flex-start;justify-content:space-between;gap:6px}
.bk-label{font-size:11px;font-weight:800;letter-spacing:.12em;color:var(--muted);padding-top:3px}
.bk-nums{display:flex;flex-direction:column;align-items:flex-end;font-size:13px;font-weight:800;line-height:1.3}
.bk-nums small{color:var(--muted);font-weight:600;white-space:nowrap}
.bk-nums.is-over{color:#d9534f}
.bar{height:6px;border-radius:999px;background:var(--line);overflow:hidden}
.bar span{display:block;height:100%;background:var(--accent);border-radius:999px;transition:width .2s ease}
.bucket.over .bar span{background:#d9534f}
.chips{display:flex;flex-direction:column;gap:7px;flex:1}
.bk-empty{margin:auto 0;text-align:center;color:var(--muted);font-size:12px;font-weight:600;opacity:.75}
.chip{display:flex;align-items:center;gap:9px;background:var(--panel);border-radius:10px;padding:8px 10px;box-shadow:var(--shadow);cursor:grab;transition:transform .1s ease,box-shadow .15s ease}
.chip:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.chip:active{cursor:grabbing}
.chip .dot{width:11px;height:11px;border-radius:50%;flex:none;box-shadow:inset 0 0 0 1px rgba(0,0,0,.06)}
.chip .nm{flex:1;min-width:0;font-size:13.5px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chip .amt{font-size:12.5px;font-weight:800;flex:none}
.chip .x{background:transparent;color:var(--muted);border:0;padding:0 4px;font-size:15px;box-shadow:none;font-weight:800;flex:none}
.chip .x:hover{color:#e26d5c;transform:none}

/* Dialog */
dialog{border:0;border-radius:24px;max-width:460px;width:calc(100% - 32px);padding:0;background:var(--panel);color:var(--ink);box-shadow:var(--shadow-lg)}
dialog::backdrop{background:rgba(30,40,60,.35);backdrop-filter:blur(2px)}
.dialog-header{display:flex;align-items:center;justify-content:space-between;padding:22px 24px 0}
.dialog-header h2{margin:2px 0 0;font-size:22px;font-weight:800}
.dialog-header .eyebrow{text-align:left}
.icon-button{background:var(--panel-2);color:var(--muted);border:0;font-size:20px;line-height:1;width:34px;height:34px;border-radius:50%;padding:0}
.dialog-body{padding:18px 24px 24px}
.field{display:grid;gap:7px;margin:15px 0;font-weight:700;font-size:14px}
.field input,.field select,.field textarea{width:100%;font-weight:500}
.field textarea{resize:vertical;min-height:64px}
.field input[type=color]{height:44px;padding:4px;cursor:pointer}
.dialog-actions{display:flex;justify-content:space-between;gap:10px;margin-top:20px}
.api-key-row{border-bottom:1.5px solid var(--line);padding:16px 0}
.api-key-row p{font-size:13px;overflow-wrap:anywhere;color:var(--muted)}
#key-secret-panel{margin-top:20px;padding:16px;background:var(--accent-soft);border-radius:14px}
#key-secret{font-family:ui-monospace,Menlo,monospace}
pre{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--panel-2);padding:12px;border-radius:12px}
#key-message{font-size:13px;color:var(--muted)}

@media (max-width:720px){
  #workspace:not([hidden]){height:auto;overflow:visible}
  .board{flex-direction:column;height:auto;min-height:0}
  #bank{width:100%;height:auto;max-height:none}
  #recipients{width:100%;height:auto;grid-template-columns:1fr}
}