/* ============================================
   MULTIPLICATION TRAINER — EXTENDED STYLES
   Builds on edu.css + style.css tokens
   ============================================ */

/* --- SCREEN MANAGEMENT --- */
.tm-screen {
    display: none;
}

.tm-screen.active {
    display: block;
}

/* --- SETTINGS SCREEN --- */
.tm-settings {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.tm-card {
    padding: var(--space-md);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.tm-card__title {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Table checkboxes grid */
.tm-tables-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(54px, 1fr));
    gap: 6px;
}

.tm-tbl-cb {
    display: none;
}

.tm-tbl-label {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.04);
    border: 2px solid var(--glass-border);
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.tm-tbl-label:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-light);
}

.tm-tbl-cb:checked+.tm-tbl-label {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    box-shadow: 0 0 12px rgba(139, 92, 246, 0.35);
}

/* Difficulty presets */
.tm-diff-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tm-diff-btn {
    flex: 1;
    min-width: 90px;
    padding: 0.55rem 0.8rem;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.04);
    border: 2px solid var(--glass-border);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    cursor: pointer;
    text-align: center;
    transition: all var(--transition-fast);
}

.tm-diff-btn:hover {
    border-color: var(--color-primary);
}

.tm-diff-btn.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-color: transparent;
    color: #fff;
}

/* Mode cards */
.tm-modes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 8px;
}

.tm-mode-card {
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.04);
    border: 2px solid var(--glass-border);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tm-mode-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.tm-mode-card.active {
    border-color: var(--color-primary);
    background: rgba(139, 92, 246, 0.12);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.2);
}

.tm-mode-card__icon {
    font-size: 1.6rem;
    margin-bottom: 4px;
}

.tm-mode-card__name {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-text);
}

.tm-mode-card__desc {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* Settings row */
.tm-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.tm-row label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: 600;
}

.tm-row select,
.tm-row input[type="number"] {
    padding: 0.5rem 0.8rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.tm-row select option {
    background: #1a1040;
}

/* Toggle switches */
.tm-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.88rem;
    color: var(--color-text-secondary);
}

.tm-toggle input {
    display: none;
}

.tm-toggle__track {
    width: 40px;
    height: 22px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 11px;
    position: relative;
    transition: background var(--transition-fast);
    flex-shrink: 0;
}

.tm-toggle__track::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.tm-toggle input:checked+.tm-toggle__track {
    background: var(--color-primary);
}

.tm-toggle input:checked+.tm-toggle__track::after {
    left: 21px;
    background: #fff;
}

/* Rank badge on settings */
.tm-rank-bar {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(6, 182, 212, 0.08));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.tm-rank-bar__icon {
    font-size: 1.6rem;
}

.tm-rank-bar__info {
    flex: 1;
}

.tm-rank-bar__name {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
}

.tm-rank-bar__xp {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.tm-rank-bar__arrow {
    color: var(--color-text-muted);
}

.tm-xp-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    margin-top: 4px;
    overflow: hidden;
}

.tm-xp-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 3px;
    transition: width 0.6s ease;
}

/* Start button */
.tm-start-btn {
    display: block;
    width: 100%;
    padding: 0.9rem;
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border: none;
    border-radius: var(--radius-md);
    color: #fff;
    cursor: pointer;
    box-shadow: 0 4px 25px rgba(139, 92, 246, 0.35);
    transition: all var(--transition-normal);
}

.tm-start-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 35px rgba(139, 92, 246, 0.45);
}

/* --- GAME SCREEN --- */
.tm-game-hud {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
    gap: 8px;
}

.tm-hud-left,
.tm-hud-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.tm-hud-stat {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.tm-hud-stat--green {
    color: var(--color-accent-green);
}

.tm-hud-stat--red {
    color: #ef4444;
}

.tm-hud-stat--orange {
    color: var(--color-accent-orange);
}

/* Timer bar */
.tm-timer-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    margin-bottom: var(--space-md);
    overflow: hidden;
}

.tm-timer-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
    border-radius: 3px;
    transition: width 0.3s linear;
}

.tm-timer-fill.warn {
    background: linear-gradient(90deg, #ef4444, var(--color-accent-orange));
}

.tm-timer-text {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.tm-timer-text.warn {
    color: #ef4444;
    animation: pulse-warn 0.5s ease-in-out infinite alternate;
}

/* Combo indicator */
.tm-combo {
    text-align: center;
    margin-bottom: var(--space-sm);
    font-family: var(--font-mono);
    font-weight: 700;
    transition: all 0.2s ease;
    min-height: 28px;
}

.tm-combo__text {
    display: inline-block;
    padding: 2px 14px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
}

.tm-combo__text.c1 {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-accent-green);
}

.tm-combo__text.c2 {
    background: rgba(6, 182, 212, 0.15);
    color: var(--color-accent);
}

.tm-combo__text.c3 {
    background: rgba(139, 92, 246, 0.2);
    color: var(--color-primary-light);
}

.tm-combo__text.c4 {
    background: rgba(236, 72, 153, 0.2);
    color: var(--color-accent-pink);
}

.tm-combo__text.c5 {
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-accent-orange);
}

@keyframes combo-pop {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.25);
    }

    100% {
        transform: scale(1);
    }
}

.tm-combo--pop {
    animation: combo-pop 0.3s ease;
}

/* Question display */
.tm-expr {
    font-family: var(--font-mono);
    font-size: clamp(2.2rem, 7vw, 4rem);
    font-weight: 700;
    text-align: center;
    margin: var(--space-md) 0 var(--space-lg);
    color: var(--color-text);
    letter-spacing: 0.04em;
    min-height: 60px;
}

.tm-expr .tm-gap {
    display: inline-block;
    min-width: 60px;
    border-bottom: 4px solid var(--color-primary);
    margin: 0 4px;
    color: var(--color-primary-light);
}

/* Answer input area */
.tm-input-area {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.tm-answer {
    width: 140px;
    padding: 0.75rem 1rem;
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 700;
    text-align: center;
    background: rgba(255, 255, 255, 0.06);
    border: 3px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: border-color var(--transition-fast), background var(--transition-fast);
    outline: none;
}

.tm-answer:focus {
    border-color: var(--color-primary);
}

.tm-answer.correct {
    border-color: var(--color-accent-green) !important;
    background: rgba(16, 185, 129, 0.1) !important;
}

.tm-answer.wrong {
    border-color: #ef4444 !important;
    background: rgba(239, 68, 68, 0.1) !important;
}

/* Multiple choice options */
.tm-choices {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    max-width: 400px;
    margin: 0 auto var(--space-md);
}

.tm-choice-btn {
    padding: 0.8rem;
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 700;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 56px;
}

.tm-choice-btn:hover:not(:disabled) {
    border-color: var(--color-primary);
    background: rgba(139, 92, 246, 0.1);
}

.tm-choice-btn.correct {
    border-color: var(--color-accent-green) !important;
    background: rgba(16, 185, 129, 0.15) !important;
}

.tm-choice-btn.wrong {
    border-color: #ef4444 !important;
    background: rgba(239, 68, 68, 0.15) !important;
}

.tm-choice-btn:disabled {
    pointer-events: none;
    opacity: 0.6;
}

/* Action buttons row */
.tm-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.tm-btn {
    padding: 0.55rem 1.2rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tm-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-light);
}

.tm-btn--primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.25);
}

.tm-btn--primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.35);
}

/* Hint panel */
.tm-hint-box {
    margin: var(--space-sm) auto;
    max-width: 400px;
    padding: var(--space-sm) var(--space-md);
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.25);
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    color: var(--color-accent-orange);
    text-align: center;
    animation: fadeIn 0.3s ease;
}

/* Feedback flash */
@keyframes flash-correct {
    0% {
        box-shadow: 0 0 0 rgba(16, 185, 129, 0);
    }

    50% {
        box-shadow: 0 0 40px rgba(16, 185, 129, 0.4);
    }

    100% {
        box-shadow: 0 0 0 rgba(16, 185, 129, 0);
    }
}

@keyframes flash-wrong {
    0% {
        box-shadow: 0 0 0 rgba(239, 68, 68, 0);
    }

    50% {
        box-shadow: 0 0 40px rgba(239, 68, 68, 0.4);
    }

    100% {
        box-shadow: 0 0 0 rgba(239, 68, 68, 0);
    }
}

.tm-flash-correct {
    animation: flash-correct 0.5s ease;
}

.tm-flash-wrong {
    animation: flash-wrong 0.5s ease;
}

/* Pause overlay */
.tm-pause-overlay {
    position: fixed;
    inset: 0;
    background: rgba(3, 0, 20, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.tm-pause-box {
    text-align: center;
    padding: var(--space-xl);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    max-width: 340px;
    width: 90%;
}

.tm-pause-box h2 {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    margin-bottom: var(--space-md);
}

.tm-pause-box .tm-btn {
    margin: 4px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* --- RESULTS SCREEN --- */
.tm-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    margin: var(--space-md) 0;
}

.tm-result-stat {
    padding: var(--space-sm);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    text-align: center;
}

.tm-result-stat__val {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary-light);
}

.tm-result-stat__label {
    font-size: 0.72rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-top: 2px;
}

.tm-new-record {
    display: inline-block;
    padding: 2px 10px;
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid var(--color-accent-orange);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-accent-orange);
    animation: combo-pop 0.5s ease;
}

/* --- ACHIEVEMENTS MODAL --- */
.tm-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(3, 0, 20, 0.8);
    backdrop-filter: blur(6px);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.tm-modal {
    background: rgba(15, 10, 40, 0.95);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    max-width: 520px;
    width: 92%;
    max-height: 80vh;
    overflow-y: auto;
}

.tm-modal h2 {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    text-align: center;
}

.tm-modal-close {
    float: right;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px;
}

.tm-ach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 10px;
}

.tm-ach {
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    text-align: center;
    transition: all var(--transition-fast);
    opacity: 0.4;
}

.tm-ach.unlocked {
    opacity: 1;
    border-color: var(--color-accent-orange);
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.15);
}

.tm-ach__icon {
    font-size: 1.8rem;
}

.tm-ach__name {
    font-size: 0.7rem;
    font-weight: 600;
    margin-top: 4px;
    color: var(--color-text-secondary);
}

/* Achievement toast */
.tm-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.7rem 1.4rem;
    background: rgba(15, 10, 40, 0.95);
    border: 1px solid var(--color-accent-orange);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent-orange);
    z-index: 1100;
    animation: toast-in 0.4s ease, toast-out 0.4s ease 2.6s forwards;
    box-shadow: 0 0 30px rgba(245, 158, 11, 0.25);
    white-space: nowrap;
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes toast-out {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
        transform: translateX(-50%) translateY(-10px);
    }
}

/* --- LARGE MODE --- */
.large-mode .tm-expr {
    font-size: clamp(3rem, 10vw, 5.5rem);
}

.large-mode .tm-answer {
    width: 180px;
    font-size: 2.2rem;
    padding: 1rem;
}

.large-mode .tm-choice-btn {
    font-size: 1.8rem;
    min-height: 70px;
}

.large-mode .tm-btn {
    font-size: 1rem;
    padding: 0.7rem 1.5rem;
}

/* --- REDUCED MOTION --- */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* --- RESPONSIVE --- */
@media (max-width: 600px) {
    .tm-modes-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }

    .tm-choices {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .tm-results-grid {
        grid-template-columns: 1fr 1fr;
    }

    .tm-ach-grid {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    }

    .tm-game-hud {
        font-size: 0.8rem;
    }

    .tm-expr {
        margin: var(--space-sm) 0 var(--space-md);
    }
}

/* --- PULSE WARN --- */
@keyframes pulse-warn {
    from {
        opacity: 1;
    }

    to {
        opacity: 0.5;
    }
}

/* --- RESULT BOX (SHARED) --- */
.result-box {
    text-align: center;
    padding: var(--space-lg);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-md);
}

.result-box__emoji {
    font-size: 3rem;
    margin-bottom: var(--space-sm);
}

.result-box__score {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.result-box__label {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
}

.result-box__actions {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* --- MISTAKES LIST --- */
.mistakes-list__title {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.mistake-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: rgba(239, 68, 68, 0.06);
    border: 1px solid rgba(239, 68, 68, 0.15);
    border-radius: var(--radius-sm);
    margin-bottom: 6px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.mistake-item__q {
    color: var(--color-text-secondary);
}

.mistake-item__answer {
    color: var(--color-accent-green);
    font-weight: 700;
}