.ptc-author,
.ptc-practice {
    margin-bottom: var(--spacing-lg);
}

.ptc-author-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 180px;
    gap: var(--spacing-md);
}

.ptc-check-option {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-md);
    border: 2px solid var(--gray-light);
    border-radius: var(--border-radius);
    background: var(--white);
    font-weight: var(--fw-bold);
}

.ptc-check-option input {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
}

.ptc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.ptc-share-url {
    width: 100%;
    min-height: 44px;
    padding: 0 var(--spacing-md);
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
}

.ptc-hint {
    color: var(--gray-dark);
}

.ptc-hint.is-success {
    color: var(--success-color);
    font-weight: var(--fw-bold);
}

.ptc-practice {
    padding: clamp(18px, 3vw, 36px);
    border-radius: var(--border-radius-large);
    background: linear-gradient(135deg, #f7fbfb 0%, #fffdf7 100%);
    border: 1px solid var(--gray-light);
    box-shadow: var(--shadow-large);
}

.ptc-topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.ptc-kicker {
    margin: 0 0 4px;
    color: var(--primary-color);
    font-weight: var(--fw-black);
}

.ptc-topbar h2 {
    margin: 0;
    font-size: clamp(1.4rem, 3vw, 2.2rem);
}

.ptc-counter {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 0 var(--spacing-lg);
    border-radius: var(--border-radius-pill);
    background: var(--primary-color);
    color: var(--white);
    font-weight: var(--fw-black);
    white-space: nowrap;
}

.ptc-card {
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(24px, 5vw, 56px);
    border-radius: var(--border-radius-large);
    background: var(--white);
    border: 2px solid color-mix(in srgb, var(--primary-color) 25%, var(--gray-light));
    box-shadow: var(--shadow-medium);
    text-align: center;
}

.ptc-card p {
    margin: 0;
    color: var(--gray-darkest);
    font-size: clamp(1.8rem, 5vw, 4rem);
    font-weight: var(--fw-black);
    line-height: 1.35;
}

.ptc-timer {
    margin: var(--spacing-lg) 0 0;
    text-align: center;
}

.ptc-timer-number {
    color: var(--primary-color);
    font-size: 2.2rem;
    font-weight: var(--fw-black);
}

.ptc-timer-bar {
    height: 10px;
    overflow: hidden;
    border-radius: var(--border-radius-pill);
    background: var(--gray-light);
}

.ptc-timer-bar div {
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    transition: width 0.2s linear;
}

.ptc-controls {
    display: grid;
    grid-template-columns: 64px minmax(0, 220px) 64px;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.ptc-icon-btn,
.ptc-main-btn {
    min-height: 56px;
    border: 0;
    border-radius: var(--border-radius-pill);
    cursor: pointer;
    box-shadow: var(--shadow-small);
    transition: var(--transition-smooth);
}

.ptc-icon-btn {
    background: var(--gray-lighter);
    color: var(--gray-darkest);
    font-size: 1.2rem;
}

.ptc-main-btn {
    background: var(--primary-color);
    color: var(--white);
    font-weight: var(--fw-black);
}

.ptc-icon-btn:hover,
.ptc-main-btn:hover {
    transform: translateY(var(--hover-lift-button));
}

.ptc-sub-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

body.student-mode .ptc-author,
body.student-mode .instructions,
body.student-mode .ad-horizontal {
    display: none !important;
}

@media (max-width: 700px) {
    .ptc-author-grid {
        grid-template-columns: 1fr;
    }

    .ptc-actions,
    .ptc-sub-controls {
        display: grid;
        grid-template-columns: 1fr;
    }

    .ptc-actions .btn,
    .ptc-sub-controls .btn {
        width: 100%;
    }

    .ptc-topbar {
        flex-direction: column;
    }

    .ptc-controls {
        grid-template-columns: 56px minmax(0, 1fr) 56px;
    }
}