/* ===================== 🧩 Λογικά προβλήματα (υπολογιστική σκέψη) ===================== */
.bb-wrap { position: absolute; inset: 0; overflow: hidden; display: flex; flex-direction: column; background: linear-gradient(180deg, #e0f2f1, #fff8e1); color: #263238; font-size: 18px; }
.bb-home .decor { opacity: .45; }
@keyframes bb-shake { 0%, 100% { transform: translateX(0); } 20% { transform: translateX(-8px); } 40% { transform: translateX(8px); } 60% { transform: translateX(-5px); } 80% { transform: translateX(5px); } }
.bb-widget.shake { animation: bb-shake .4s; }

/* ---- αρχική: βαθμίδα, δυσκολία, λίστα ---- */
.bb-head { z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 12px 18px 4px; }
.bb-logo { display: flex; align-items: center; gap: 12px; }
.bb-logo > span { font-size: 56px; animation: bob 3s ease-in-out infinite; }
.bb-logo .bb-mascot.noimg::after { content: '🤖'; }
.bb-logo h2 { margin: 0; font-size: 30px; color: #00695c; line-height: 1.1; }
.bb-logo small { font-size: 15px; color: #455a64; }
.bb-progress { background: #fff; border-radius: 16px; padding: 6px 14px; font-weight: 600; box-shadow: 0 2px 6px rgba(0,0,0,.08); }
.bb-pills { z-index: 1; display: flex; flex-direction: column; gap: 6px; padding: 4px 18px; }
.bb-pillrow { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.bb-lbl { font-weight: 700; color: #455a64; width: 88px; }
.bb-pill { font-family: inherit; font-size: 17px; font-weight: 600; padding: 6px 14px; border-radius: 20px; border: 3px solid #b2dfdb; background: #fff; cursor: pointer; color: #263238; transition: transform .1s; }
.bb-pill small { font-weight: 400; opacity: .7; }
.bb-pill:hover { border-color: #26a69a; transform: scale(1.04); }
.bb-pill.sel { background: #26a69a; border-color: #00796b; color: #fff; }
.bb-pill.d1.sel { background: #66bb6a; border-color: #2e7d32; }
.bb-pill.d2.sel { background: #ffca28; border-color: #f9a825; color: #263238; }
.bb-pill.d3.sel { background: #ef5350; border-color: #c62828; }
.bb-mini { font-size: 17px; padding: 6px 16px; margin: 0; }
.bb-mini + .bb-mini { margin-left: 4px; }
#bb-random { margin-left: auto; }
.bb-list { z-index: 1; flex: 1; overflow: auto; display: grid; grid-template-columns: repeat(auto-fill, minmax(176px, 1fr)); gap: 10px; padding: 10px 18px 18px; align-content: start; }
.bb-card { font-family: inherit; background: #fff; border: 3px solid #e0e0e0; border-radius: 18px; padding: 10px 8px; display: flex; flex-direction: column; align-items: center; gap: 3px; cursor: pointer; transition: transform .15s, border-color .15s; text-align: center; color: #263238; }
.bb-card:hover { transform: translateY(-4px); border-color: #26a69a; }
.bb-card .e { font-size: 40px; line-height: 1; }
.bb-card .t { font-weight: 700; font-size: 17px; line-height: 1.15; }
.bb-card .c { font-size: 12px; color: #607d8b; }
.bb-card .s { font-size: 14px; min-height: 18px; }
.bb-card.done { border-color: #66bb6a; background: #f1f8e9; }
.bb-card.seen { border-color: #ffca28; background: #fffde7; }
.bb-empty { color: #90a4ae; }

/* ---- οθόνη προβλήματος ---- */
.bb-play { background: #f4faf8; }
.bb-bar { display: flex; align-items: center; gap: 10px; padding: 8px 14px; background: #fff; border-bottom: 3px solid #e0f2f1; flex-wrap: wrap; }
.bb-bar .tool-btn { margin: 0; }
.bb-title { font-weight: 700; font-size: 22px; color: #00695c; }
.bb-badge { font-size: 13px; font-weight: 700; padding: 3px 10px; border-radius: 12px; background: #eceff1; }
.bb-badge.d1 { background: #e8f5e9; color: #2e7d32; } .bb-badge.d2 { background: #fff8e1; color: #f57f17; } .bb-badge.d3 { background: #ffebee; color: #c62828; }
.bb-pos { margin-left: auto; font-weight: 700; color: #607d8b; }
.bb-timer { font-weight: 700; font-size: 20px; background: #263238; color: #fff; padding: 4px 12px; border-radius: 12px; }
.bb-timer.low { background: #c62828; animation: bump 1s infinite; }
.bb-body { flex: 1; min-height: 0; display: grid; grid-template-columns: 1.1fr 1fr; gap: 12px; padding: 12px; }
.bb-left, .bb-right { overflow: auto; min-height: 0; background: #fff; border-radius: 18px; padding: 14px 16px; box-shadow: 0 2px 8px rgba(0,0,0,.06); }
.bb-story { font-size: 18px; line-height: 1.45; }
.bb-story ul, .bb-story ol { margin: 6px 0 6px 22px; padding: 0; }
.bb-fig { margin: 12px 0; display: flex; flex-direction: column; align-items: center; gap: 8px; }
.bb-q { font-size: 20px; font-weight: 700; background: #e0f2f1; border-left: 6px solid #26a69a; padding: 10px 14px; border-radius: 10px; margin-top: 8px; line-height: 1.35; }
.bb-widget { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.bb-note { font-size: 14px; color: #607d8b; text-align: center; }
.bb-actions { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.bb-actions .big-btn { font-size: 22px; padding: 10px 24px; }
.bb-feedback { border-radius: 16px; padding: 12px 16px; margin-top: 10px; animation: popin .3s; }
.bb-feedback.hidden { display: none; }
.bb-feedback.ok { background: #e8f5e9; border: 3px solid #66bb6a; }
.bb-feedback.bad { background: #ffebee; border: 3px solid #ef5350; }
.bb-feedback.show { background: #fff8e1; border: 3px solid #ffca28; }
.bb-feedback p { margin: 6px 0; }
.bb-fbhead { font-size: 22px; font-weight: 700; }
.bb-fbhead small { font-size: 14px; font-weight: 400; color: #607d8b; }
.bb-explain, .bb-cs { margin-top: 8px; font-size: 16px; line-height: 1.4; }
.bb-explain h4, .bb-cs h4 { margin: 0 0 4px; font-size: 16px; color: #00695c; }
.bb-cs { background: #e3f2fd; border-radius: 12px; padding: 8px 12px; }

/* ---- widgets ---- */
.bb-opts { display: grid; gap: 10px; width: 100%; }
.bb-opt { font-family: inherit; font-size: 18px; background: #fff; border: 3px solid #cfd8dc; border-radius: 16px; padding: 10px 12px; cursor: pointer; display: flex; align-items: center; gap: 10px; text-align: left; color: #263238; transition: transform .1s, border-color .15s; }
.bb-opt .l { flex: none; width: 34px; height: 34px; border-radius: 50%; background: #eceff1; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.bb-opt .c { flex: 1; display: flex; justify-content: center; align-items: center; }
.bb-opt:hover { border-color: #26a69a; transform: scale(1.02); }
.bb-opt.sel { border-color: #26a69a; background: #e0f2f1; }
.bb-opt.sel .l { background: #26a69a; color: #fff; }
.bb-opt.right { border-color: #43a047; background: #e8f5e9; }
.bb-opt.right .l { background: #43a047; color: #fff; }
.bb-opt:disabled { cursor: default; transform: none; }
.bb-opts.narrow .bb-opt { padding: 8px 6px; gap: 6px; flex-direction: column; }
.bb-opts.narrow .bb-opt .l { width: 28px; height: 28px; font-size: 15px; }
.bb-items { display: grid; gap: 8px; width: 100%; }
.bb-item { font-family: inherit; font-size: 26px; background: #fff; border: 3px solid #cfd8dc; border-radius: 14px; min-height: 56px; padding: 6px 8px; cursor: pointer; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; color: #263238; line-height: 1.2; }
.bb-items.single { max-width: 300px; }
.bb-items.single .bb-item { aspect-ratio: 1; min-height: 0; padding: 4px; }
.bb-item small { font-size: 12px; font-weight: 600; }
.bb-item b { font-size: 20px; }
.bb-item .bb-row, .bb-item .bb-seq { font-size: 20px; }
.bb-item:hover { border-color: #26a69a; }
.bb-item.sel { border-color: #26a69a; background: #e0f2f1; box-shadow: inset 0 0 0 2px #26a69a; }
.bb-item.used { opacity: .3; pointer-events: none; }
.bb-item.right { border-color: #43a047; background: #e8f5e9; box-shadow: inset 0 0 0 2px #43a047; }
.bb-item:disabled { cursor: default; }
.bb-items[style*="repeat(1,"] .bb-item { font-size: 17px; text-align: left; align-items: flex-start; }
.bb-numbox { display: flex; align-items: baseline; gap: 8px; }
.bb-numval { font-size: 44px; font-weight: 700; min-width: 120px; text-align: center; background: #fff; border: 3px solid #cfd8dc; border-radius: 14px; padding: 4px 16px; }
.bb-numval.right { border-color: #43a047; color: #2e7d32; }
.bb-unit { font-size: 22px; font-weight: 700; color: #607d8b; }
.bb-keypad { display: grid; grid-template-columns: repeat(3, 64px); gap: 6px; }
.bb-key { font-family: inherit; font-size: 24px; font-weight: 700; height: 52px; border-radius: 12px; border: 0; background: #eceff1; cursor: pointer; box-shadow: 0 3px 0 #b0bec5; color: #263238; }
.bb-key.fn { background: #ffe0b2; box-shadow: 0 3px 0 #ffb74d; }
.bb-key:active { transform: translateY(2px); box-shadow: none; }
.bb-slots { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.bb-slot { width: 84px; min-height: 70px; border: 3px dashed #90a4ae; border-radius: 14px; display: flex; align-items: center; justify-content: center; cursor: pointer; background: #fafafa; position: relative; font-size: 26px; padding: 4px; }
.bb-slot .n { position: absolute; top: -10px; left: -8px; background: #26a69a; color: #fff; border-radius: 50%; width: 24px; height: 24px; font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.bb-slot .c { font-size: 22px; font-weight: 700; text-align: center; line-height: 1.1; }
.bb-slot.filled { border-style: solid; border-color: #26a69a; background: #e0f2f1; }
.bb-slot.right { border-color: #43a047; background: #e8f5e9; }
.bb-pool { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.bb-pool .bb-item { min-width: 70px; font-size: 22px; font-weight: 700; }
.bb-match { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; width: 100%; }
.bb-mcol { display: flex; flex-direction: column; gap: 10px; }
.bb-mitem { position: relative; font-family: inherit; font-size: 19px; font-weight: 600; background: #fff; border: 3px solid #cfd8dc; border-radius: 14px; padding: 8px 10px 8px 14px; cursor: pointer; text-align: left; color: #263238; min-height: 54px; display: flex; align-items: center; }
.bb-mitem .tag { position: absolute; top: -10px; right: -8px; min-width: 22px; height: 22px; border-radius: 11px; color: #fff; font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; padding: 0 5px; }
.bb-mitem.cur { box-shadow: 0 0 0 4px #ffca28; }
.bb-mitem.right { background: #e8f5e9; }
.bb-mitem .bb-seq { font-size: 24px; }
.bb-palette { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; }
.bb-pal { font-family: inherit; font-size: 24px; font-weight: 700; width: 50px; height: 50px; border-radius: 12px; border: 3px solid #cfd8dc; background: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; padding: 0; color: #263238; }
.bb-pal .bb-sq { width: 30px; height: 30px; }
.bb-pal.sel { border-color: #26a69a; box-shadow: 0 0 0 3px #b2dfdb; }
.bb-cgrid { display: grid; gap: 4px; }
.bb-ccell { font-family: inherit; width: var(--cs); height: var(--cs); font-size: calc(var(--cs) * .5); font-weight: 700; border-radius: 10px; border: 3px solid #cfd8dc; background: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; padding: 0; line-height: 1; color: #263238; position: relative; }
.bb-ccell:hover { border-color: #26a69a; }
.bb-ccell.lock { background: #f5f5f5; cursor: default; border-color: #e0e0e0; }
.bb-ccell.changed { border-color: #ffa726; }
.bb-ccell.right { border-color: #43a047; box-shadow: inset 0 0 0 2px #43a047; }
.bb-ccell .bb-sq { width: 72%; height: 72%; }
.bb-ccell small { font-size: 12px; position: absolute; bottom: 2px; right: 4px; }
.bb-ccell .lbl { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 20px; color: #263238; text-shadow: 0 0 4px #fff, 0 0 4px #fff; pointer-events: none; }
.bb-ccell .bb-bcard { width: 52px; height: 62px; font-size: 18px; }
.bb-world { position: relative; display: grid; gap: 0; border: 3px solid #8d6e63; border-radius: 8px; overflow: hidden; background: #f9fbe7; }
.bb-wcell { width: 52px; height: 52px; box-sizing: border-box; border: 1px solid #d7ccc8; font-size: 28px; display: flex; align-items: center; justify-content: center; }
.bb-wcell.wall { background: #d7ccc8; }
.bb-wcell.visited { background: #c8e6c9; }
.bb-robot { position: absolute; width: 44px; height: 44px; font-size: 30px; display: flex; align-items: center; justify-content: center; transition: left .3s, top .3s; pointer-events: none; z-index: 2; }
.bb-robot .d { position: absolute; top: -6px; right: -8px; font-size: 13px; background: #fff; border-radius: 50%; width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; border: 2px solid #26a69a; }
.bb-robot.bump { animation: bb-shake .4s; }
.bb-robot.happy { animation: bob .5s 3; }
.bb-cmds { display: flex; gap: 6px; }
.bb-cmd { font-family: inherit; font-size: 26px; width: 84px; border-radius: 12px; border: 3px solid #cfd8dc; background: #fff; cursor: pointer; display: flex; flex-direction: column; align-items: center; padding: 4px 2px; color: #263238; line-height: 1.1; }
.bb-cmd small { font-size: 11px; font-weight: 600; }
.bb-cmd.fn { width: 54px; background: #ffe0b2; justify-content: center; }
.bb-cmd:hover { border-color: #26a69a; }
.bb-seq { display: inline; }
.bb-seq i { font-style: normal; color: #90a4ae; }
.bb-prog { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; min-height: 36px; background: #f5f5f5; border-radius: 12px; padding: 6px 10px; width: 100%; box-sizing: border-box; }
.bb-step { background: #fff; border: 2px solid #b0bec5; border-radius: 10px; padding: 2px 8px; font-weight: 700; font-size: 16px; }

/* ---- εικόνες εκφωνήσεων ---- */
.bb-grid { display: grid; gap: 3px; background: #8d6e63; padding: 3px; border-radius: 8px; }
.bb-cell { width: var(--cs); height: var(--cs); background: #fff; display: flex; align-items: center; justify-content: center; font-size: calc(var(--cs) * .55); font-weight: 700; position: relative; line-height: 1; }
.bb-cell small { position: absolute; bottom: 1px; right: 3px; font-size: 11px; color: #37474f; }
.bb-row { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; align-items: center; }
.bb-chip { background: #fff; border: 2px solid #cfd8dc; border-radius: 10px; padding: 4px 8px; font-size: 24px; line-height: 1.2; }
.boxes .bb-chip { padding: 8px 12px; border-color: #8d6e63; background: #fff8e1; }
.gears .bb-chip { font-size: 36px; display: flex; flex-direction: column; align-items: center; line-height: 1; }
.gears .bb-chip small { font-size: 14px; font-weight: 700; margin-top: 2px; }
.books .bb-chip { font-weight: 700; font-size: 22px; }
.beads .bb-chip { width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: #ffe082; border-color: #f9a825; font-weight: 700; font-size: 20px; padding: 0; }
.plates .bb-chip { display: flex; align-items: center; justify-content: center; width: 56px; height: 56px; padding: 0; }
.bb-stackbox { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.bb-stack { display: flex; flex-direction: column; gap: 2px; border-bottom: 4px solid #8d6e63; padding: 0 6px 2px; }
.bb-stack span { font-size: 26px; line-height: 1.1; }
.bb-sq { display: inline-block; width: 36px; height: 36px; border-radius: 6px; border: 2px solid rgba(0,0,0,.2); vertical-align: middle; box-sizing: border-box; }
.bb-table { border-collapse: collapse; font-size: 16px; background: #fff; }
.bb-table th, .bb-table td { border: 2px solid #cfd8dc; padding: 4px 8px; text-align: center; }
.bb-table th { background: #e0f2f1; }
.bb-callout { background: #fff8e1; border: 2px solid #ffca28; border-radius: 12px; padding: 8px 12px; margin: 8px 0; font-size: 16px; line-height: 1.4; }
.bb-cap { font-size: 15px; color: #455a64; text-align: center; }
.bb-cap.big { font-size: 20px; color: #263238; }
.bb-mono { font-family: Consolas, 'Courier New', monospace; letter-spacing: 2px; }
.bb-ball { display: inline-flex; width: 64px; height: 64px; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #fff, #ffb74d 60%, #ef6c00); align-items: center; justify-content: center; font-size: 22px; box-shadow: 0 3px 6px rgba(0,0,0,.2); }
.bb-ball.stripes { background: repeating-linear-gradient(45deg, rgba(0,0,0,.28) 0 6px, transparent 6px 12px), radial-gradient(circle at 35% 35%, #fff, #ffb74d 60%, #ef6c00); }
.bb-slice { width: 72px; height: 72px; }
.bb-plate { display: inline-block; border-radius: 50%; background: radial-gradient(#fff, #e0e0e0); border: 3px solid #90a4ae; box-sizing: border-box; }
.bb-plate.L { width: 52px; height: 52px; } .bb-plate.M { width: 38px; height: 38px; } .bb-plate.S { width: 26px; height: 26px; }
.bb-plate.E { width: 52px; height: 52px; background: none; border: 3px dashed #cfd8dc; }
.bb-side { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; justify-content: center; }
.bb-arrow { font-weight: 700; color: #607d8b; }
.bb-bcard { width: 56px; height: 76px; border-radius: 8px; border: 3px solid #37474f; display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: 22px; background: #fff; box-sizing: border-box; color: #263238; }
.bb-bcard.up small { font-size: 9px; letter-spacing: -1px; line-height: 1; word-break: break-all; padding: 0 3px; text-align: center; }
.bb-bcard.down { background: repeating-linear-gradient(45deg, #5c6bc0 0 6px, #3f51b5 6px 12px); color: #fff; }
.bb-alien { width: 90px; height: 108px; }
.bb-svg { max-width: 100%; height: auto; }
.bb-opt .bb-svg { max-height: 120px; }

/* ---- αποτελέσματα διαγωνισμού ---- */
.bb-results { align-items: center; justify-content: center; padding: 12px; }
.bb-rescard { z-index: 1; background: #fff; border-radius: 24px; padding: 18px 24px; max-width: 780px; width: 100%; max-height: 100%; overflow: auto; box-shadow: 0 8px 30px rgba(0,0,0,.15); text-align: center; box-sizing: border-box; }
.bb-rescard h2 { margin: 0 0 6px; color: #00695c; font-size: 34px; }
.bb-score { font-size: 22px; }
.bb-score b { font-size: 40px; color: #00695c; }
.bb-medal { font-size: 20px; margin: 6px 0 10px; font-weight: 600; }
.bb-reslist { text-align: left; display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }
.bb-resrow { border: 2px solid #e0e0e0; border-radius: 12px; padding: 6px 10px; }
.bb-resrow.ok { border-color: #66bb6a; background: #f9fdf9; }
.bb-resrow.bad { border-color: #ef5350; background: #fffafa; }
.bb-resrow summary { display: flex; align-items: center; gap: 8px; cursor: pointer; font-weight: 600; list-style: none; }
.bb-resrow summary::-webkit-details-marker { display: none; }
.bb-resrow .i { width: 24px; opacity: .6; }
.bb-resrow .e { font-size: 24px; }
.bb-resrow .t { flex: 1; }
.bb-resrow .r { font-weight: 700; }
.bb-rules { font-size: 16px; background: #fff8e1; border-radius: 12px; padding: 8px 12px; text-align: left; }

@media (max-width: 900px) {
  .bb-body { grid-template-columns: 1fr; overflow: auto; }
  .bb-left, .bb-right { overflow: visible; }
  .bb-lbl { width: auto; }
}

/* ---- διαδραστικός οδηγός λύσης (βήμα-βήμα) ---- */
@keyframes bb-glow { 0%, 100% { box-shadow: 0 0 0 3px #ffb300, 0 0 12px 4px rgba(255,179,0,.55); } 50% { box-shadow: 0 0 0 5px #ffca28, 0 0 22px 8px rgba(255,179,0,.75); } }
@keyframes bb-glow-svg { 0%, 100% { filter: drop-shadow(0 0 3px #ffb300); } 50% { filter: drop-shadow(0 0 9px #ff8f00); } }
.bb-hl { animation: bb-glow 1.1s ease-in-out infinite; position: relative; z-index: 1; border-radius: 10px; }
.bb-cell.bb-hl { outline: 3px solid #ffb300; outline-offset: -3px; background: #fff3c4; }
.bb-chip.bb-hl { background: #fff3c4; border-color: #ffb300; transform: scale(1.12); transition: transform .3s; }
.bb-table td.bb-hl { background: #fff3c4; animation: bb-glow 1.1s ease-in-out infinite; }
svg .bb-hl { animation: bb-glow-svg 1.1s ease-in-out infinite; }
svg line.bb-hl { stroke: #ff8f00 !important; stroke-width: 7 !important; }
svg circle.bb-hl { stroke: #ff8f00 !important; stroke-width: 5 !important; }
svg rect.bb-hl { stroke: #ff8f00 !important; stroke-width: 4 !important; fill: #fff3c4 !important; }
svg text.bb-hl { font-size: 40px !important; }
.bb-cell.bb-trail { background: #c8e6c9; }
.bb-grid.bb-walkgrid { position: relative; }
.bb-walker { position: absolute; display: flex; align-items: center; justify-content: center; font-size: calc(var(--cs) * .7); pointer-events: none; z-index: 3; transition: left .55s ease-in-out, top .55s ease-in-out; filter: drop-shadow(0 3px 3px rgba(0,0,0,.35)); animation: bob 1s ease-in-out infinite; }
.bb-walker.done { animation: jump .6s 2; }
.bb-feedback.walk { background: linear-gradient(180deg, #fff8e1, #fff3e0); border: 3px solid #ffb300; padding: 12px; }
.bb-feedback.walk.final { background: linear-gradient(180deg, #e8f5e9, #e0f7fa); border-color: #66bb6a; }
.bb-walkhead { display: flex; gap: 12px; align-items: flex-start; }
.bb-mascot { flex: none; width: 92px; height: 92px; display: flex; align-items: center; justify-content: center; font-size: 62px; line-height: 1; animation: bob 2.4s ease-in-out infinite; }
.bb-mascot img { width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(0 4px 6px rgba(0,0,0,.2)); }
.bb-mascot.noimg::after { content: '🤖'; }
.bb-bubble { flex: 1; position: relative; background: #fff; border-radius: 18px; padding: 10px 14px; box-shadow: 0 2px 8px rgba(0,0,0,.08); animation: popin .3s; }
.bb-bubble::before { content: ''; position: absolute; left: -12px; top: 30px; border: 8px solid transparent; border-right-color: #fff; border-left: 0; }
.bb-stepno { font-size: 13px; font-weight: 700; color: #ef6c00; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 2px; }
.bb-steptext { font-size: 18px; line-height: 1.4; }
.bb-tip { margin-top: 8px; font-size: 15px; background: #e3f2fd; border-left: 4px solid #42a5f5; border-radius: 8px; padding: 6px 10px; }
.bb-walknav { display: flex; align-items: center; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.bb-walknav .tool-btn { margin: 0; }
.bb-walknav .tool-btn:disabled { opacity: .4; cursor: default; }
.bb-dots { flex: 1; display: flex; justify-content: center; gap: 5px; }
.bb-dots i { width: 10px; height: 10px; border-radius: 50%; background: #ffe0b2; transition: transform .2s; }
.bb-dots i.done { background: #ffb300; }
.bb-dots i.now { background: #ef6c00; transform: scale(1.4); }
.bb-invite { margin-top: 8px; font-size: 15px; color: #ef6c00; font-weight: 600; }
.bb-actions.hidden { display: none; }
.bb-rowwalk { margin: 6px 0 4px 32px; font-size: 14px; }
.bb-logo .bb-mascot { width: 76px; height: 76px; font-size: 56px; }