/* ============================================================
   generators.css — Shared styles for worksheet generator pages
   (add-sub, multiplication, division, square-root, cube-root)
   ============================================================ */

/* ==== Base Reset & Body ==== */
*{box-sizing:border-box;margin:0;padding:0}
body{
    font-family:system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
    background:white;
    min-height:100vh;
    display:flex;
    flex-direction:column;
    color:var(--text-dark);
    position:relative;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

html {
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

/* ==== Prevent horizontal scroll ==== */
img, canvas, svg {
    max-width: 100%;
    height: auto;
}

canvas:not(#canvas) {
    max-width: 100%;
    height: auto;
}

/* ==== Abacus container overrides ==== */
#abacus-container {
    margin-bottom: 20px;
}

#abacus-container .container {
    max-width: none !important;
    padding-top: 0 !important;
    padding-bottom: 10px !important;
}

#abacus-container .content {
    padding-top: 0 !important;
}

#abacus-container #canvasdiv {
    margin-top: 0 !important;
    padding-top: 0 !important;
}

#abacus-container #canvas {
    margin-top: 0 !important;
}

#abacus-container .controls {
    margin-top: 10px !important;
}

/* ==== Layout wrappers ==== */
.questions-content-wrapper {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    margin: 0 auto;
    padding: 0;
    box-sizing: border-box;
}

.container {
    max-width: 100%;
    box-sizing: border-box;
}
.tableWrap,
.dynamic-tables-container {
    max-width: 100%;
    overflow-x: hidden;
    box-sizing: border-box;
}

/* Footer is fixed via style.css */

body > .container,
body > .tableWrap,
body > .stats,
body > .timer-panel,
body > button.button {
    flex: 0 0 auto;
    order: 1;
}

#main-content-wrapper {
    flex: 1 0 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.questions-content-wrapper {
    width: 100%;
    box-sizing: border-box;
    padding: 0 20px;
    margin-bottom: 20px;
}

/* ==== Header ==== */
header h1{
    font-weight:600;
    letter-spacing:1px;
    font-size:2.4em;
}

/* ==== Main & Cards (landing) ==== */
main{
    flex:1;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:40px 20px;
}
.cards{
    display:flex;
    flex-wrap:wrap;
    gap:30px;
    max-width:1100px;
    justify-content:center;
}
.card{
    background:var(--white);
    width:260px;
    border-radius:14px;
    padding:35px 25px;
    text-align:center;
    text-decoration:none;
    color:var(--secondary);
    font-weight:600;
    font-size:1.2rem;
    box-shadow:var(--shadow);
    transition:all .3s ease;
    border:1px solid rgba(102, 126, 234, 0.1);
}
.card:hover{
    transform:translateY(-8px);
    box-shadow:0 15px 35px rgba(102, 126, 234, 0.2);
    border-color:var(--primary);
}

/* ==== Generator Container ==== */
.container{
    flex:0 0 auto;
    display:flex;
    flex-direction:column;
    align-items:center;
    width:100%;
    padding:20px;
    background:white;
    box-sizing: border-box;
    position:relative;
    margin-bottom: 20px;
}

.container:last-of-type {
    padding-bottom: 40px;
}

.questions-content-wrapper > .tableWrap,
.questions-content-wrapper > .stats,
.questions-content-wrapper > button.button,
.questions-content-wrapper > .timer-panel {
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 20px;
}

/* ==== Settings Form ==== */
.settings{
    display:flex;
    flex-wrap:nowrap;
    gap:14px;
    justify-content:center;
    align-items:flex-end;
    margin:25px 0;
    scroll-margin-top: 100px;
    overflow-x:auto;
    padding:0 10px 4px;
}
.settings label{
    display:flex;
    flex-direction:column;
    font-weight:600;
    color:var(--secondary);
    flex-shrink:0;
}
/* Checkbox labels sit in-line, aligned to button baseline */
.settings .generator-label-row{
    flex-direction:row;
    align-items:center;
    gap:5px;
    padding-bottom:10px;
    white-space:nowrap;
}
.settings input[type="number"],
.settings select{
    margin-top:6px;
    padding:8px 10px;
    border:1px solid #ccc;
    border-radius:6px;
    font-size:0.95rem;
    width:80px;
}

/* ==== Buttons ==== */
.settings button,
.button,
.display-btn{
    background:#1e3a8a;
    color:#ffffff;
    border:none;
    border-radius:6px;
    padding:10px 22px;
    font-size:1rem;
    cursor:pointer;
    transition:all .3s ease;
    box-shadow:var(--shadow);
    margin:0;
    text-decoration:none;
    font-weight:600;
}
.settings button:hover,
.button:hover,
.display-btn:hover{
    background-color:#f97316;
    transform:translateY(-2px);
    box-shadow:0 4px 12px rgba(249, 115, 22, 0.3);
}
.display-btn{
    padding:6px 16px;
    font-size:.9rem;
}

/* Answer display buttons — no animation */
.answer-display-btn{
    transition:none !important;
    animation:none !important;
    background:transparent !important;
    border:none !important;
    box-shadow:none !important;
    padding:0 !important;
}
.answer-display-btn:hover{
    transform:none !important;
    transition:none !important;
    background:transparent !important;
    box-shadow:none !important;
}

/* ==== Star Styles ==== */
.star-icon {
    font-size: 2rem;
    color: #FFD700;
    animation: starAppear 0.6s ease-out;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
    filter: drop-shadow(0 2px 4px rgba(255, 215, 0, 0.3));
}

@keyframes starAppear {
    0% {
        transform: scale(0) rotate(0deg);
        opacity: 0;
    }
    50% {
        transform: scale(1.3) rotate(180deg);
        opacity: 0.8;
    }
    100% {
        transform: scale(1) rotate(360deg);
        opacity: 1;
    }
}

.very-good-btn {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    border: none;
    padding: 10px 22px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin: 0 15px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.very-good-btn:hover {
    background: linear-gradient(135deg, #20c997 0%, #28a745 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.very-good-btn:active {
    transform: translateY(0);
}

.clear-stars-btn {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    border: none;
    padding: 10px 22px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin: 0 15px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.clear-stars-btn:hover {
    background: linear-gradient(135deg, #c0392b 0%, #e74c3c 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.clear-stars-btn:active {
    transform: translateY(0);
}

/* ==== Tables ==== */
table{
    border-collapse:collapse;
    width:max-content;
    border:1px solid #1e3a8a;
}
th,td{
    padding:8px 14px;
    text-align:center;
    font-size:1.5rem;
    border:1px solid #1e3a8a;
}
th{
    background:#1e3a8a;
    color:#ffffff;
}
.num{
    white-space:pre;
    font-size:1.5rem;
    display:inline-block;
    text-align:center;
}

/* Square/Cube root specific num styles */
.num .sqrt-symbol,
.num .root-symbol{
    font-size:1.5rem;
    font-weight:700;
    display:inline-block;
    margin-right:4px;
}
.num .radicand-value{
    display:inline-block;
    white-space:nowrap;
}

/* Ensure sqrt/cube root numbers don't wrap in table cells */
.numTable td .num {
    white-space: nowrap;
}

/* Overlay */
.rs-overlay{
    position:fixed;
    top:0;left:0;width:100%;height:100%;
    background:rgba(0,0,0,0.85);
    color:#fff;display:flex;align-items:center;justify-content:center;
    font-size:3rem;z-index:9999;
}

/* ==== Footer ==== */
footer{
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 100;
}

/* ==== Table Wrap ==== */
.tableWrap{
    overflow: hidden;
    padding:15px 20px;
    width:100%;
    max-width: 100%;
    display:flex;
    flex-direction: column;
    justify-content:center;
    align-items: center;
    box-sizing: border-box;
    margin: 0 auto 20px auto;
}

@media (min-width: 769px) {
    .tableWrap {
        padding: 15px 30px;
    }
}

/* Hide main table — JS creates responsive tables */
.dynamic-table {
    display: none !important;
    visibility: hidden !important;
}

.tableWrap > .numTable:not(.dynamic-table),
.tableWrap > .numTable.dynamic-table,
.tableWrap > .mulTable:not(.dynamic-table),
.tableWrap > .mulTable.dynamic-table,
.tableWrap > .divTable:not(.dynamic-table),
.tableWrap > .divTable.dynamic-table {
    display: none !important;
}

/* ==== Dynamic Tables Container ==== */
.dynamic-tables-container {
    width: 100%;
    max-width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    align-items: flex-start;
    box-sizing: border-box;
    overflow: hidden;
    margin: 0 auto;
    padding: 0;
}

.dynamic-tables-container > div {
    flex: 0 0 auto;
    width: auto;
    max-width: 100%;
    box-sizing: border-box;
    margin: 0;
    min-width: fit-content;
}

.dynamic-tables-container .numTable,
.dynamic-tables-container .mulTable,
.dynamic-tables-container .divTable {
    width: auto;
    max-width: 100%;
    box-sizing: border-box;
    table-layout: auto;
    word-wrap: break-word;
    min-width: fit-content;
}

/* Responsive table columns */
.numTable,
.mulTable,
.divTable {
    display: table;
    border-collapse: collapse;
    width: 100%;
    max-width: 100%;
    margin: 0;
}

.numTable th,
.numTable td,
.mulTable th,
.mulTable td,
.divTable th,
.divTable td {
    max-width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: normal;
    min-width: 80px;
    width: auto;
}

/* ==== Timer Panel ==== */
.timer-panel{
    background:rgba(255,255,255,0.85);
    border:2px solid var(--secondary);
    border-radius:10px;
    padding:12px 14px;
    text-align:center;
    box-shadow:0 4px 12px rgba(0,0,0,.12);
    max-width:240px;
    margin:20px auto;
    display:flex;
    flex-direction:column;
    gap:8px;
    align-items:center;
}
.timer-panel h3{
    margin:0 0 4px 0;
    color:var(--secondary);
}
#timer-display{
    font-size:1.4rem;
    font-weight:700;
    margin:0 0 8px 0;
}

/* ==== Desktop layout ==== */
@media(min-width:769px){
    .timer-panel{
        position:fixed;
        right:25px;
        top:50%;
        transform:translateY(-50%);
        margin:0;
        z-index:1000;
        max-height: 90vh;
        overflow-y: auto;
    }
    .tables-row{
        display:flex;
        gap:20px;
        justify-content:center;
        flex-wrap:wrap;
    }
}

/* ==== Mobile (<=768px) ==== */
@media(max-width: 768px){
    .timer-panel{
        position:static;
        margin:15px auto 0;
        padding:15px 18px;
        order:99;
        max-width: 100%;
    }

    .container {
        padding: 15px;
    }

    .settings{
        flex-direction:column;
        align-items:stretch;
        gap: 15px;
    }

    .settings label,
    .settings button{
        width:100%;
        max-width:100%;
    }

    .settings input,
    .settings select{
        width:100%;
    }

    /* Mobile-friendly checkboxes */
    .settings .generator-label-row {
        flex-direction: row !important;
        align-items: center !important;
        width: 100% !important;
        margin-top: 15px !important;
        padding: 10px 0;
    }

    .settings .generator-label-row input[type="checkbox"] {
        width: 24px !important;
        height: 24px !important;
        min-width: 24px !important;
        min-height: 24px !important;
        margin: 0 !important;
        margin-right: 10px !important;
        cursor: pointer;
        flex-shrink: 0;
    }

    .settings .generator-label-row span {
        margin-left: 0 !important;
        flex: 1;
        line-height: 1.5;
    }

    .tableWrap {
        padding: 15px 10px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tables-row {
        flex-direction: column;
        gap: 15px;
    }

    .answer-input{
        width:100% !important;
        max-width:90px;
    }

    .numTable,
    .mulTable,
    .divTable{
        width:100%;
        max-width: 100%;
        table-layout:fixed;
        font-size: 0.9rem;
    }
    .numTable th,
    .numTable td,
    .mulTable th,
    .mulTable td,
    .divTable th,
    .divTable td{
        font-size:1.2rem;
        padding:6px 4px;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .stats {
        font-size: 0.9rem !important;
        padding: 10px;
        word-wrap: break-word;
    }

    .button {
        width: 100%;
        max-width: 100%;
        margin: 10px 0 !important;
        padding: 12px;
    }

    body {
        min-height: 100vh;
    }

    .container:last-of-type {
        padding-bottom: 30px;
    }
}

/* ==== Extra small (<=480px) ==== */
@media(max-width: 480px){
    .timer-panel{
        left:50%;
        right:auto;
        top:auto;
        bottom:25px;
        transform:translateX(-50%);
        width:88%;
        max-width:320px;
        padding:15px 18px;
    }
    #timer-display{font-size:1.6rem;}
    .timer-panel button{
        margin:6px 4px !important;
        flex:1 1 30%;
        padding:8px 0;
    }

    .container {
        padding: 10px;
    }

    .settings {
        gap: 12px;
    }

    .settings .generator-label-row input[type="checkbox"] {
        width: 28px !important;
        height: 28px !important;
        min-width: 28px !important;
        min-height: 28px !important;
    }

    .settings .generator-label-row {
        padding: 12px 0;
        margin-top: 12px !important;
    }

    .numTable th,
    .numTable td,
    .mulTable th,
    .mulTable td,
    .divTable th,
    .divTable td{
        font-size:1rem;
        padding:4px 2px;
    }

    .answer-input{
        max-width:70px;
        font-size: 1.2rem;
    }

    .display-btn {
        font-size: 0.85rem;
        padding: 6px 12px;
    }

    .stats {
        font-size: 0.8rem !important;
        display: flex;
        flex-direction: column;
        gap: 5px;
    }
}


/* ============================================================
   Utility Classes (extracted from inline styles in generator pages)
   ============================================================ */

/* Forces a new row in the settings flex container before checkboxes */
.settings-break {
    flex-basis: 100%;
    height: 0;
}

/* Label row with checkbox */
.generator-label-row {
    flex-direction: row;
    align-items: center;
    margin-top: 0;
}

/* Label gap for checkbox spans (margin-left:6px) */
.generator-label-gap {
    margin-left: 6px;
}

/* Stats panel in quiz mode */
.generator-stats {
    text-align: center;
    margin: 20px 0;
    font-weight: 600;
    color: var(--secondary);
}

/* Stars container */
.stars-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    min-height: 50px;
    padding: 10px;
}

/* Toggle abacus button wrapper */
.toggle-abacus-wrap {
    margin-bottom: 10px;
    text-align: center;
}

/* Action buttons group (top) */
.generator-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

/* Action buttons group (bottom) */
.generator-actions-bottom {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 20px;
    flex-wrap: wrap;
}

/* Error message (for generator error display) */
.generator-error-message {
    color: #e74c3c;
    font-weight: bold;
    text-align: center;
}


/* ============================================================
   Practice Page Modal Button Styles
   ============================================================ */

/* Practice next button (margin-top:12px, initially hidden) */
.practice-next-btn {
    margin-top: 12px;
}

/* Practice end button (margin-top:18px, background:#e74c3c) */
.practice-modal-btn-end {
    margin-top: 18px;
    background: #e74c3c;
}

.practice-modal-btn-end:hover {
    background: #c0392b;
}


/* Particular number field container */
.particular-number-field {
    display: none;
    margin-left: 28px;
    margin-top: 6px;
}


/* ==== Hidden utility (Tailwind-compatible) ==== */
.hidden {
    display: none !important;
}


/* ═══ SQUARE / SQUARE ROOT ═══════════════════════════════════════ */
.mode-subtitle {
    text-align: center;
    color: var(--secondary);
    margin: 10px 0 25px;
    font-size: 1.1rem;
}

.mode-cards {
    display: flex;
    gap: 25px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 20px 0;
}

.mode-card {
    width: 220px;
    padding: 30px 20px;
    border-radius: 14px;
    background: #fff;
    text-decoration: none;
    color: var(--secondary);
    font-weight: 600;
    font-size: 1.2rem;
    box-shadow: 0 10px 25px rgba(0,0,0,.08);
    transition: transform .25s ease, box-shadow .25s ease;
    text-align: center;
}

.mode-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,.12);
}

.mode-card-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.mode-card-label {
    font-size: 1.2rem;
}

.mode-toggle {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-top: 12px;
}

.mode-toggle-btn {
    padding: 8px 24px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border: 2px solid var(--primary);
    background: #fff;
    color: var(--primary);
}

.mode-toggle-btn:first-child {
    border-right: 1px solid var(--primary);
    border-radius: 6px 0 0 6px;
}

.mode-toggle-btn:last-child {
    border-left: 1px solid var(--primary);
    border-radius: 0 6px 6px 0;
}

.mode-toggle-btn.active {
    background: var(--primary);
    color: #fff;
}

.settings-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    align-items: flex-end;
}

.settings-options {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 24px;
    justify-content: center;
    margin-top: 10px;
}

.sqrtTable {
    min-width: 120px;
    border: 1px solid #ccc;
    border-collapse: collapse;
}

.sqrtTable th,
.sqrtTable td {
    border: 1px solid #ccc;
    padding: 8px 14px;
    text-align: center;
    font-size: 1.5rem;
}

.sqrtTable th {
    background: var(--primary);
    color: #fff;
}

.sqrtTable td {
    min-width: 100px;
}

.tables-row {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.timer-panel {
    background: rgba(255,255,255,0.85);
    border: 2px solid var(--secondary);
    border-radius: 10px;
    padding: 20px 25px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,.12);
    max-width: 320px;
    margin: 20px auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}

.timer-panel h3 {
    margin: 0 0 4px 0;
    color: var(--secondary);
}

#timer-display {
    font-size: 2rem;
    font-weight: 700;
}

.rs-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.85);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    z-index: 9999;
}

.num {
    white-space: pre;
    font-size: 1.5rem;
    display: inline-block;
    text-align: center;
}

.answer-input {
    width: 90px;
    margin-bottom: 6px;
    padding: 8px;
    font-size: 1.2rem;
    text-align: center;
    border: 1px solid #ccc;
    border-radius: 6px;
}

.generator-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin: 20px 0;
    flex-wrap: wrap;
}

@media (min-width: 769px) {
    .timer-panel {
        position: fixed;
        right: 25px;
        top: 50%;
        transform: translateY(-50%);
        margin: 0;
        z-index: 1000;
    }
}

@media (max-width: 768px) {
    .timer-panel {
        position: static;
        margin: 15px auto 0;
    }
    .sqrtTable th,
    .sqrtTable td {
        font-size: 1.2rem;
        padding: 6px 8px;
    }
    .settings-row {
        flex-direction: column;
        align-items: stretch;
    }
}