:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel2: #1e222b;
  --border: #2a2f3a;
  --text: #e8eaf0;
  --muted: #9aa3b2;
  --accent: #2f9eff;
  --green: #2ecc71;
  --red: #e74c3c;
}
/* ===== THEME TERANG (putih) — toggle lewat tombol ☀️/🌙 di topbar ===== */
[data-theme="light"] {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --panel2: #f0f1f5;
  --border: #dfe3e9;
  --text: #1b1e24;
  --muted: #5f6672;
  --accent: #1f7ae0;
  --green: #1d9e55;
  --red: #d43a3a;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex; flex-direction: column;
  min-height: 100vh;
}

/* ---------- topbar ---------- */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.brand { font-size: 15px; }
.top-actions { display: flex; gap: 8px; }
.btn {
  border: none; border-radius: 10px; padding: 8px 14px;
  font-size: 14px; cursor: pointer; transition: opacity .15s;
}
.btn:active { opacity: .7; }
.btn.active { border-color: var(--accent); color: var(--accent); background: rgba(47, 158, 255, .1); }
.btn.primary { background: var(--accent); color: #fff; font-weight: 600; }
.btn.ghost { background: var(--panel2); color: var(--text); border: 1px solid var(--border); }

/* ---------- status ---------- */
.statusbar {
  padding: 8px 14px; font-size: 13px;
  background: var(--panel2); border-bottom: 1px solid var(--border);
}
.statusbar.ok { color: var(--green); }
.statusbar.err { color: var(--red); }

/* ---------- toolbar ---------- */
.toolbar {
  padding: 10px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.toolbar-label { font-size: 12px; color: var(--muted); display: block; margin-bottom: 8px; }
.toolbar-blocks { display: flex; flex-wrap: wrap; gap: 8px; }
.tblock {
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 7px 12px; font-size: 13px; cursor: grab;
  user-select: none;
}
.tblock:active { cursor: grabbing; }

/* ---------- canvas ---------- */
.canvas {
  flex: 1; padding: 16px 14px 40px;
  display: flex; flex-direction: column; gap: 10px;
  overflow-y: auto;
}
.block {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  position: relative;
  display: flex; flex-direction: column; gap: 8px;
}
.block.dragging { opacity: .5; border-style: dashed; }
.block-head {
  display: flex; justify-content: space-between; align-items: center;
  gap: 8px;
}
.btype { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.bactions { display: flex; gap: 6px; }
.bact {
  background: transparent; border: none; cursor: pointer;
  font-size: 15px; padding: 2px 5px; border-radius: 6px; color: var(--muted);
}
.bact:hover { background: var(--panel2); color: var(--text); }
.bact.del:hover { color: var(--red); }
.drag-handle { cursor: grab; color: var(--muted); font-size: 16px; }
.drag-handle:active { cursor: grabbing; }

.bcontent { width: 100%; }
.bcontent textarea, .bcontent input[type=text] {
  width: 100%; background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 9px 11px; font-size: 14px; font-family: inherit;
  resize: vertical;
}
.bcontent textarea:focus, .bcontent input:focus { outline: none; border-color: var(--accent); }
.block.h1 textarea { font-size: 22px; font-weight: 700; }
.block.h2 textarea { font-size: 18px; font-weight: 700; }
.block.h3 textarea { font-size: 16px; font-weight: 600; }
.block.quote textarea { border-left: 3px solid var(--accent); font-style: italic; }
.block.code textarea { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }
.block.math textarea { font-family: ui-monospace, Menlo, Consolas, monospace; }

/* list block */
.list-items { display: flex; flex-direction: column; gap: 6px; }
.list-row { display: flex; gap: 6px; align-items: center; }
.list-marker { color: var(--muted); font-size: 14px; width: 18px; text-align: center; }
.list-row input { flex: 1; background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; font-size: 14px; }
.list-row input:focus { outline: none; border-color: var(--accent); }

/* table block */
.tbl-wrap { overflow-x: auto; }
table.tbl { border-collapse: collapse; width: 100%; }
table.tbl td, table.tbl th { border: 1px solid var(--border); padding: 0; }
table.tbl input {
  width: 100%; min-width: 60px; background: transparent; color: var(--text);
  border: none; padding: 7px 8px; font-size: 13px;
}
table.tbl input:focus { outline: none; background: transparent; }
table.tbl th input { font-weight: 700; color: var(--accent); }
table.tbl td.sel, table.tbl th.sel { outline: 2px solid var(--accent); outline-offset: -2px; background: rgba(128, 128, 128, .4); }
table.tbl td.sel input, table.tbl th.sel input { background: transparent; color: inherit; }
table.tbl td.hl, table.tbl th.hl { background: rgba(255, 213, 0, .38); }
table.tbl td.hl input, table.tbl th.hl input { background: transparent; color: inherit; }
table.tbl td.sel.hl, table.tbl th.sel.hl { background: rgba(255, 213, 0, .45); }
.tbl-hint { font-size: 11px; color: var(--muted); align-self: center; }
.tbl-actions { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }

/* hr preview */
.hr-preview { text-align: center; color: var(--muted); letter-spacing: 4px; }

/* image block */
.img-preview {
  width: 100%; max-height: 260px; object-fit: cover;
  border-radius: 10px; border: 1px solid var(--border); background: var(--panel2);
}
.img-empty {
  padding: 22px 12px; text-align: center; color: var(--muted);
  border: 1px dashed var(--border); border-radius: 10px; font-size: 13px;
}
.img-actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* ---------- layar kunci wajib join ---------- */
.sub-block {
  position: fixed; inset: 0; z-index: 999;
  background: var(--bg); display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.sub-block.hidden { display: none; }
.sub-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  padding: 28px 24px; max-width: 340px; width: 100%; text-align: center;
}
.sub-emoji { font-size: 42px; margin-bottom: 8px; }
.sub-card h2 { margin: 0 0 8px; font-size: 18px; }
.sub-card p { color: var(--muted); font-size: 13px; line-height: 1.5; margin: 0 0 16px; }
.sub-card .btn { display: block; text-align: center; text-decoration: none; padding: 11px; border-radius: 10px; font-size: 14px; }
.sub-hint { font-size: 11px !important; color: var(--muted); margin-top: 14px !important; margin-bottom: 0 !important; }

/* channel row */
.channel-row { display: flex; align-items: center; gap: 6px; margin-bottom: 4px; }
.ch-label { font-size: 15px; }
.ch-select {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 8px; font-size: 13px; max-width: 45%; flex: 1;
}
.channel-row input {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 8px; font-size: 13px; flex: 1; min-width: 60px;
}
.foot-info { font-size: 12px; color: var(--muted); }
.footbar {
  padding: 10px 14px; font-size: 12px; color: var(--muted);
  background: var(--panel); border-top: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 6px;
}
.channel-row { display: flex; gap: 8px; align-items: center; }
.ch-label { font-size: 15px; }
.channel-row input {
  flex: 1; background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 7px 10px; font-size: 13px; min-width: 0;
}
.channel-row input:focus { outline: none; border-color: var(--accent); }
.foot-info { text-align: center; }