:root {
    --app-accent: #3b82f6;
    --app-accent-dark: #2563eb;
}

.question-text {
    font-size: clamp(1.6rem, 4.5vw, 2.2rem);
}

.equations-question {
    display: block;
    text-align: center;
}

.problem-line {
    margin-bottom: 0.75rem;
    padding: 0.5rem 0;
}

.problem-line + .problem-line {
    margin-top: -0.25rem;
}

.answer-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
}

.answer-line {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.equals-sign {
    font-size: clamp(1.6rem, 4.5vw, 2.2rem);
    color: #4b5563;
    min-width: 2.6rem;
    text-align: right;
}

/* MathLive math-field answer input */
math-field.math-field-answer {
    position: relative;
    display: inline-flex;
    align-items: center;
    margin: 0;
    padding: 10px 52px 10px 12px;
    border: 2px solid var(--app-accent);
    border-radius: 6px;
    background-color: white;
    box-sizing: border-box;
    min-width: 8rem;
    min-height: 56px;
    text-align: left;
    font-size: 2rem;
    line-height: normal;
    cursor: text;
    transition: border-color 0.2s ease-in-out, background-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    --primary: var(--app-accent);
    --caret-color: var(--app-accent);
    --contains-highlight-background-color: rgba(59, 130, 246, 0.08);
    --selection-background-color: rgba(59, 130, 246, 0.25);
    --selection-color: #1f2937;
}

math-field.math-field-answer.equations-multi-input {
    min-width: 14rem;
}

math-field.math-field-answer::part(menu-toggle) {
    display: none;
}

math-field.math-field-answer::part(virtual-keyboard-toggle) {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
}

math-field.math-field-answer:focus,
math-field.math-field-answer:focus-within {
    border-color: var(--app-accent-dark);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
    outline: none;
}

math-field.math-field-answer.correct {
    border-color: #10b981;
    background-color: rgba(16, 185, 129, 0.08);
}

math-field.math-field-answer.incorrect {
    border-color: #ef4444;
    background-color: rgba(239, 68, 68, 0.08);
}

.question-hint {
    font-size: 0.9rem;
    color: var(--color-text-muted, #6b7280);
    margin-bottom: 0.5rem;
}

.equations-input-hint {
    font-size: 0.85rem;
    color: #6b7280;
    margin-top: 0.25rem;
    font-style: italic;
}

/* Streak / timer accent */
#streak-counter, #timer {
    color: var(--app-accent-dark) !important;
}

[data-theme="dark"] math-field.math-field-answer {
    background-color: #1f2937;
    color: #f3f4f6;
}