/* ═══════════════════════════════════════════════════════════════════
   Distributive Property Widget
   ═══════════════════════════════════════════════════════════════════ */

.ama-dist-prop-widget {
    /* Avatar brand palette */
    --adp-blue:      #7c3aed;
    --adp-blue-dark: #5b21b6;
    --adp-blue-lt:   #a78bfa;
    --adp-green-bg:  #edf7ea;
    --adp-green-fg:  #4a7a3d;
    --adp-green-bd:  #81c171;
    --adp-orange:    #ff9130;
    --adp-yellow:    #fddd54;
    --adp-pink:      #ec90b7;
    --adp-danger:    #f53a33;
    --adp-radius:    18px;

    position: relative;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: var(--adp-radius);
    overflow: hidden;
    max-width: 860px;
    margin: 0 auto;
    box-shadow: 0 4px 28px rgba(30,64,175,0.09);
    -webkit-user-select: none;
    user-select: none;
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

/* ── Header ──────────────────────────────────────────────────────── */
.adp-header {
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--adp-blue-dark) 0%, var(--adp-blue) 100%);
    color: #fff;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.adp-title-wrap {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.adp-title {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.adp-formula {
    font-size: 0.78rem;
    opacity: 0.75;
    font-style: italic;
    letter-spacing: 0.02em;
}

.adp-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.adp-ctrl-label {
    font-size: 0.78rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
    opacity: 0.9;
}

.adp-diff-sel {
    background: rgba(255,255,255,0.18);
    border: 1px solid rgba(255,255,255,0.35);
    color: #fff;
    border-radius: 7px;
    padding: 4px 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    outline: none;
}
.adp-diff-sel option { background: #5b21b6; }

.adp-btn {
    background: rgba(255,255,255,0.18);
    border: 1px solid rgba(255,255,255,0.38);
    color: #fff;
    border-radius: 8px;
    padding: 5px 13px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.14s, transform 0.1s;
    white-space: nowrap;
}
.adp-btn:hover  { background: rgba(255,255,255,0.28); transform: translateY(-1px); }
.adp-btn:active { transform: translateY(0); }

.adp-stats {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.86rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    background: rgba(0,0,0,0.18);
    border-radius: 8px;
    padding: 3px 11px;
}
.adp-sep { opacity: 0.5; }

/* ── Body ────────────────────────────────────────────────────────── */
.adp-body {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 24px 20px;
    gap: 24px;
}

/* ── Equation chain ──────────────────────────────────────────────── */
.adp-chain-wrap {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 6px;
}

.adp-chain {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-width: fit-content;
    margin: 0 auto;
}

/* "=" between steps */
.adp-eq {
    font-size: 1.6rem;
    font-weight: 700;
    color: #94a3b8;
    padding: 0 4px;
    flex-shrink: 0;
}

/* ── Step cards ──────────────────────────────────────────────────── */
.adp-step {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 14px 18px;
    border-radius: 14px;
    font-size: 1.3rem;
    font-weight: 700;
    transition: background 0.18s, border-color 0.18s, box-shadow 0.18s;
    position: relative;
    min-width: 80px;
    text-align: center;
}

/* Content row — keeps equation on a single line */
.adp-step-content {
    white-space: nowrap;
    display: flex;
    align-items: baseline;
    gap: 3px;
    line-height: 1.3;
}

/* Given step (no blanks) */
.adp-step-given {
    background: #ede9fe;
    border: 2px solid var(--adp-blue-lt);
    color: var(--adp-blue-dark);
}

/* Blank step (active) */
.adp-step-blank {
    background: #fff;
    border: 2px dashed var(--adp-blue);
    color: var(--adp-blue-dark);
    box-shadow: 0 2px 12px rgba(46,104,161,0.10);
}

/* Locked step */
.adp-step-locked {
    background: #f1f5f9;
    border: 2px dashed #cbd5e1;
    color: #94a3b8;
    opacity: 0.55;
    pointer-events: none;
}

/* Correct step */
.adp-step-correct {
    background: var(--adp-green-bg) !important;
    border: 2px solid var(--adp-green-bd) !important;
    color: var(--adp-green-fg) !important;
    animation: adp-pop 0.38s cubic-bezier(0.34,1.56,0.64,1) both;
}

@keyframes adp-pop {
    0%   { transform: scale(0.85); opacity: 0.6; }
    60%  { transform: scale(1.06); }
    100% { transform: scale(1);    opacity: 1; }
}

/* Wrong step */
.adp-step-wrong {
    animation: adp-shake 0.55s ease both;
    border-color: var(--adp-danger) !important;
    background: #fde8e7 !important;
}

@keyframes adp-shake {
    0%,100% { transform: translateX(0); }
    18%     { transform: translateX(-7px) rotate(-2deg); }
    36%     { transform: translateX(7px)  rotate(2deg); }
    54%     { transform: translateX(-5px) rotate(-1deg); }
    72%     { transform: translateX(5px)  rotate(1deg); }
}

/* ── Color-coded spans inside steps ──────────────────────────────── */
.adp-factor { color: var(--adp-blue-dark); }
.adp-step-correct .adp-factor { color: var(--adp-green-fg); }

.adp-t1 { color: #b86000; }   /* first term — amber */
.adp-t2 { color: #7c3aed; }   /* second term — purple */
.adp-step-correct .adp-t1,
.adp-step-correct .adp-t2 { color: var(--adp-green-fg); }

/* ── Inputs inside steps ─────────────────────────────────────────── */
.adp-blank {
    display: inline-block;
    border: none;
    border-bottom: 2.5px solid var(--adp-blue);
    background: transparent;
    text-align: center;
    font-size: inherit;
    font-weight: 800;
    font-family: inherit;
    color: var(--adp-blue-dark);
    outline: none;
    padding: 2px 2px 0;
    -webkit-user-select: text;
    user-select: text;
    min-width: 3ch;
    vertical-align: baseline;
    transition: border-color 0.15s, color 0.15s;
}
.adp-blank:focus {
    border-bottom-color: var(--adp-orange);
    color: #7c3aed;
}
.adp-blank.adp-t1-inp { border-bottom-color: #b86000; color: #b86000; }
.adp-blank.adp-t2-inp { border-bottom-color: #7c3aed; color: #7c3aed; }
.adp-blank.adp-inp-correct { border-bottom-color: var(--adp-green-bd); color: var(--adp-green-fg); }
.adp-blank.adp-inp-hinted  { border-bottom-color: var(--adp-orange); color: #b86000; }
.adp-blank.adp-var-inp     { font-style: italic; }

/* ── Check button on each blank step ─────────────────────────────── */
.adp-check-btn {
    background: var(--adp-blue);
    border: none;
    color: #fff;
    border-radius: 8px;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.14s, transform 0.1s;
    white-space: nowrap;
    -webkit-user-select: none;
    user-select: none;
}
.adp-check-btn:hover  { background: var(--adp-blue-dark); transform: translateY(-1px); }
.adp-check-btn:active { transform: translateY(0); }

/* ── Hint row ────────────────────────────────────────────────────── */
.adp-hint-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px 14px;
    border-top: 1px solid #f0f0f0;
    flex-shrink: 0;
}
.adp-hint-cost { font-size: 0.72em; opacity: 0.7; }
.adp-btn-hint { background: #fff8dc; color: #5a3e00; border: 1.5px solid #fddd54; }
.adp-btn-hint:hover { background: #fddd54; filter: none; }
.adp-btn-hint:disabled { opacity: .45; cursor: default; }

.adp-feedback {
    font-size: 0.9rem;
    font-weight: 700;
    min-width: 140px;
}
.adp-feedback-success { color: var(--adp-green-fg); }
.adp-feedback-error   { color: var(--adp-danger); }

/* ── Stars ───────────────────────────────────────────────────────── */
.adp-victory-stars {
    font-size: 2.6rem;
    line-height: 1;
    margin-bottom: 18px;
    letter-spacing: 4px;
}
.adp-star-on  { color: var(--adp-yellow); text-shadow: 0 2px 6px rgba(180,130,0,0.35); }
.adp-star-off { color: #d1d5db; }

/* ── Victory overlay ─────────────────────────────────────────────── */
.adp-victory {
    position: absolute;
    inset: 0;
    background: rgba(15,23,42,0.75);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
    border-radius: var(--adp-radius);
    backdrop-filter: blur(4px);
}
.adp-victory.adp-show { display: flex; animation: adp-fadein 0.4s ease; }
@keyframes adp-fadein { from { opacity: 0; } to { opacity: 1; } }

.adp-victory-box {
    background: #fff;
    border-radius: 22px;
    padding: 40px 52px;
    text-align: center;
    box-shadow: 0 24px 64px rgba(0,0,0,0.3);
    animation: adp-slidein 0.42s cubic-bezier(0.34,1.56,0.64,1) both;
}
@keyframes adp-slidein {
    from { transform: scale(0.65) translateY(40px); opacity: 0; }
    to   { transform: scale(1)    translateY(0);    opacity: 1; }
}

.adp-victory-emoji { font-size: 3rem; line-height: 1; margin-bottom: 10px; }
.adp-victory-title { font-size: 2rem; font-weight: 900; color: var(--adp-blue-dark); margin-bottom: 8px; letter-spacing: -0.03em; }

.adp-scorecard {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 12px 20px;
    margin-bottom: 24px;
    min-width: 200px;
    text-align: left;
}
.adp-sc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 0;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.88rem;
}
.adp-sc-row:last-child { border-bottom: none; }
.adp-sc-lbl { color: #64748b; font-weight: 600; }
.adp-sc-val { color: var(--adp-blue-dark); font-weight: 800; }

.adp-victory .adp-btn {
    background: var(--adp-blue);
    border-color: var(--adp-blue-dark);
    font-size: 1rem;
    padding: 12px 32px;
    border-radius: 12px;
}
.adp-victory .adp-btn:hover { background: var(--adp-blue-dark); }

/* ── Confetti ────────────────────────────────────────────────────── */
.adp-confetti {
    position: absolute;
    top: -20px;
    z-index: 199;
    pointer-events: none;
    animation: adp-fall linear forwards;
}
@keyframes adp-fall {
    0%   { top: -20px; opacity: 1; transform: rotate(0deg)   translateX(0); }
    80%  {             opacity: 1; }
    100% { top: 110%;  opacity: 0; transform: rotate(600deg) translateX(120px); }
}

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 680px) {
    .adp-step { font-size: 1.1rem; padding: 12px 14px; }
    .adp-eq   { font-size: 1.3rem; }
    .adp-chain { flex-direction: column; align-items: center; }
    .adp-eq   { transform: rotate(90deg); }
    .adp-header { flex-direction: column; align-items: flex-start; }
    .adp-victory-box { padding: 28px 22px; }
    .adp-victory-title { font-size: 1.6rem; }
}

/* New button — bright green, consistent across all widgets */
.adp-btn-new {
    background: #16a34a !important;
    color: #fff !important;
    border: none !important;
    font-weight: 700;
}
.adp-btn-new:hover { background: #15803d !important; filter: none !important; }