/**
 * PianoMode LMS Quiz UI - Interactive Quiz Styles
 * Duolingo-inspired design with PianoMode gold theme
 */

/* ========================================
   QUIZ CONTAINER
   ======================================== */
.pm-quiz-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #0B0B0B;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    font-family: 'Montserrat', sans-serif;
    overflow: hidden;
}

.pm-quiz-overlay.pm-quiz-hidden {
    display: none;
}

/* ========================================
   QUIZ HEADER
   ======================================== */
.pm-quiz-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 24px;
    background: #1A1A1A;
    border-bottom: 1px solid #2A2A2A;
    flex-shrink: 0;
}

.pm-quiz-close {
    background: none;
    border: none;
    color: #808080;
    font-size: 24px;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
    transition: color 0.2s;
}

.pm-quiz-close:hover {
    color: var(--pm-gold, #D7BF81);
}

.pm-quiz-progress-bar {
    flex: 1;
    height: 16px;
    background: #2A2A2A;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.pm-quiz-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--pm-gold, #D7BF81), var(--pm-gold-bright, #E6D4A8));
    border-radius: 8px;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.pm-quiz-progress-fill::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 4px;
    right: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
}

.pm-quiz-hearts {
    display: flex;
    align-items: center;
    gap: 4px;
    padding-left: 8px;
}

.pm-quiz-heart {
    font-size: 20px;
    color: var(--pm-gold, #D7BF81);
    transition: transform 0.3s, opacity 0.3s;
}

.pm-quiz-heart.pm-heart-empty {
    opacity: 0.3;
    filter: grayscale(1);
}

.pm-quiz-heart.pm-heart-lost {
    animation: pmHeartLost 0.5s ease;
}

@keyframes pmHeartLost {
    0% { transform: scale(1); }
    25% { transform: scale(1.4); }
    50% { transform: scale(0.8); color: #ff4444; }
    100% { transform: scale(1); opacity: 0.3; }
}

/* ========================================
   QUIZ BODY
   ======================================== */
.pm-quiz-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 24px;
    overflow-y: auto;
    max-width: 700px;
    margin: 0 auto;
    width: 100%;
}

/* Question */
.pm-quiz-question {
    text-align: center;
    margin-bottom: 40px;
    width: 100%;
}

.pm-quiz-question-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1.4;
    margin-bottom: 16px;
}

.pm-quiz-question-image {
    max-width: 300px;
    max-height: 200px;
    border-radius: 12px;
    margin: 16px auto;
    display: block;
}

.pm-quiz-audio-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: #2A2A2A;
    border: 2px solid #3A3A3A;
    border-radius: 12px;
    color: var(--pm-gold, #D7BF81);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 16px;
}

.pm-quiz-audio-btn:hover {
    background: #3A3A3A;
    border-color: var(--pm-gold, #D7BF81);
}

/* ========================================
   ANSWER OPTIONS
   ======================================== */
.pm-quiz-options {
    display: grid;
    gap: 12px;
    width: 100%;
}

.pm-quiz-options.pm-options-grid {
    grid-template-columns: repeat(2, 1fr);
}

.pm-quiz-options.pm-options-list {
    grid-template-columns: 1fr;
}

.pm-quiz-option {
    /* Options are real <button>s (keyboard/screen-reader accessible) —
       neutralize the UA button styles so the card look is preserved. */
    appearance: none;
    -webkit-appearance: none;
    font-family: inherit;
    width: 100%;
    background: #1A1A1A;
    border: 2px solid #3A3A3A;
    border-bottom: 4px solid #3A3A3A;
    border-radius: 12px;
    padding: 16px 20px;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #FFFFFF;
    font-size: 1rem;
    font-weight: 500;
    text-align: left;
    position: relative;
    user-select: none;
}

.pm-quiz-option:hover {
    background: rgba(215, 191, 129, 0.05);
    border-color: var(--pm-gold, #D7BF81);
}

.pm-quiz-option:focus-visible {
    outline: 2px solid var(--pm-gold, #D7BF81);
    outline-offset: 2px;
}

.pm-quiz-option:active {
    border-bottom-width: 2px;
    transform: translateY(2px);
}

.pm-quiz-option-number {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 2px solid #3A3A3A;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: #808080;
    flex-shrink: 0;
}

.pm-quiz-option-text {
    flex: 1;
}

.pm-quiz-option-image {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
}

/* Selected state */
.pm-quiz-option.pm-option-selected {
    background: rgba(215, 191, 129, 0.1);
    border-color: var(--pm-gold, #D7BF81);
}

.pm-quiz-option.pm-option-selected .pm-quiz-option-number {
    background: var(--pm-gold, #D7BF81);
    border-color: var(--pm-gold, #D7BF81);
    color: #0B0B0B;
}

/* Correct state */
.pm-quiz-option.pm-option-correct {
    background: rgba(76, 175, 80, 0.15);
    border-color: #4CAF50;
}

.pm-quiz-option.pm-option-correct .pm-quiz-option-number {
    background: #4CAF50;
    border-color: #4CAF50;
    color: #FFF;
}

/* Wrong state */
.pm-quiz-option.pm-option-wrong {
    background: rgba(244, 67, 54, 0.15);
    border-color: #F44336;
}

.pm-quiz-option.pm-option-wrong .pm-quiz-option-number {
    background: #F44336;
    border-color: #F44336;
    color: #FFF;
}

.pm-quiz-option.pm-option-disabled {
    pointer-events: none;
    opacity: 0.6;
}

/* ========================================
   QUIZ FOOTER
   ======================================== */
.pm-quiz-footer {
    padding: 20px 24px;
    border-top: 1px solid #2A2A2A;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    min-height: 80px;
}

.pm-quiz-footer-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pm-quiz-skip-btn {
    padding: 12px 24px;
    background: transparent;
    border: 2px solid #3A3A3A;
    border-radius: 12px;
    color: #808080;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.pm-quiz-skip-btn:hover {
    border-color: #808080;
    color: #CCC;
}

.pm-quiz-check-btn {
    padding: 14px 36px;
    background: #3A3A3A;
    border: none;
    border-bottom: 4px solid #2A2A2A;
    border-radius: 12px;
    color: #808080;
    font-size: 1rem;
    font-weight: 700;
    cursor: not-allowed;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pm-quiz-check-btn.pm-btn-active {
    background: var(--pm-gold, #D7BF81);
    border-bottom-color: var(--pm-gold-dark, #BEA86E);
    color: #0B0B0B;
    cursor: pointer;
}

.pm-quiz-check-btn.pm-btn-active:hover {
    background: var(--pm-gold-bright, #E6D4A8);
}

.pm-quiz-check-btn.pm-btn-active:active {
    border-bottom-width: 2px;
    transform: translateY(2px);
}

.pm-quiz-check-btn.pm-btn-correct {
    background: #4CAF50;
    border-bottom-color: #388E3C;
    color: #FFF;
    cursor: pointer;
}

.pm-quiz-check-btn.pm-btn-wrong {
    background: #F44336;
    border-bottom-color: #C62828;
    color: #FFF;
    cursor: pointer;
}

/* ========================================
   FEEDBACK BANNER
   ======================================== */
.pm-quiz-feedback {
    display: none;
    padding: 20px 24px;
    border-top: 1px solid;
    flex-shrink: 0;
}

.pm-quiz-feedback.pm-feedback-correct {
    display: flex;
    background: rgba(76, 175, 80, 0.1);
    border-color: #4CAF50;
}

.pm-quiz-feedback.pm-feedback-wrong {
    display: flex;
    background: rgba(244, 67, 54, 0.1);
    border-color: #F44336;
}

.pm-quiz-feedback-icon {
    font-size: 2rem;
    margin-right: 16px;
    flex-shrink: 0;
}

.pm-quiz-feedback-content {
    flex: 1;
}

.pm-quiz-feedback-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.pm-feedback-correct .pm-quiz-feedback-title { color: #4CAF50; }
.pm-feedback-wrong .pm-quiz-feedback-title { color: #F44336; }

.pm-quiz-feedback-explanation {
    font-size: 0.9rem;
    color: #CCC;
    line-height: 1.5;
}

/* ========================================
   COMPLETION SCREEN
   ======================================== */
.pm-quiz-complete {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 24px;
    flex: 1;
}

.pm-quiz-complete.pm-quiz-active {
    display: flex;
}

.pm-quiz-complete-icon {
    font-size: 5rem;
    margin-bottom: 24px;
    animation: pmBounceIn 0.6s ease;
}

@keyframes pmBounceIn {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

.pm-quiz-complete-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--pm-gold, #D7BF81);
    margin-bottom: 12px;
}

.pm-quiz-complete-subtitle {
    font-size: 1.1rem;
    color: #808080;
    margin-bottom: 40px;
}

.pm-quiz-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
    width: 100%;
    max-width: 500px;
}

.pm-quiz-stat {
    background: #1A1A1A;
    border: 2px solid #2A2A2A;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}

.pm-quiz-stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--pm-gold, #D7BF81);
    margin-bottom: 4px;
}

.pm-quiz-stat-label {
    font-size: 0.8rem;
    color: #808080;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pm-quiz-continue-btn {
    padding: 18px 60px;
    background: linear-gradient(135deg, var(--pm-gold, #D7BF81), var(--pm-gold-dark, #BEA86E));
    border: none;
    border-bottom: 4px solid #A89558;
    border-radius: 16px;
    color: #0B0B0B;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pm-quiz-continue-btn:hover {
    background: linear-gradient(135deg, var(--pm-gold-bright, #E6D4A8), var(--pm-gold, #D7BF81));
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(215, 191, 129, 0.3);
}

.pm-quiz-continue-btn:active {
    border-bottom-width: 2px;
    transform: translateY(2px);
}

/* ========================================
   NO HEARTS MODAL
   ======================================== */
.pm-hearts-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 10001;
    align-items: center;
    justify-content: center;
}

.pm-hearts-modal.pm-modal-visible {
    display: flex;
}

.pm-hearts-modal-card {
    background: #1A1A1A;
    border: 2px solid var(--pm-gold, #D7BF81);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.pm-hearts-modal-icon {
    font-size: 4rem;
    margin-bottom: 16px;
    color: var(--pm-gold, #D7BF81);
    opacity: 0.5;
}

.pm-hearts-modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--pm-gold, #D7BF81);
    margin-bottom: 12px;
}

.pm-hearts-modal-text {
    color: #CCC;
    margin-bottom: 24px;
    line-height: 1.6;
}

.pm-hearts-modal-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pm-hearts-refill-btn {
    padding: 14px 24px;
    background: var(--pm-gold, #D7BF81);
    border: none;
    border-bottom: 4px solid var(--pm-gold-dark, #BEA86E);
    border-radius: 12px;
    color: #0B0B0B;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.pm-hearts-refill-btn:hover {
    background: var(--pm-gold-bright, #E6D4A8);
}

.pm-hearts-quit-btn {
    padding: 12px 24px;
    background: transparent;
    border: 2px solid #3A3A3A;
    border-radius: 12px;
    color: #808080;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.pm-hearts-quit-btn:hover {
    border-color: #808080;
    color: #CCC;
}

/* ========================================
   XP ANIMATION
   ======================================== */
.pm-xp-toast {
    position: fixed;
    top: 80px;
    right: 24px;
    background: var(--pm-gold, #D7BF81);
    color: #0B0B0B;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    z-index: 10002;
    animation: pmXpSlide 2s ease forwards;
    pointer-events: none;
}

@keyframes pmXpSlide {
    0% { transform: translateY(-20px); opacity: 0; }
    15% { transform: translateY(0); opacity: 1; }
    75% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(-40px); opacity: 0; }
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 600px) {
    .pm-quiz-question-text {
        font-size: 1.3rem;
    }

    .pm-quiz-options.pm-options-grid {
        grid-template-columns: 1fr;
    }

    .pm-quiz-body {
        padding: 24px 16px;
    }

    .pm-quiz-stats-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .pm-quiz-complete-title {
        font-size: 1.8rem;
    }

    .pm-quiz-header {
        padding: 12px 16px;
    }

    .pm-quiz-footer {
        padding: 16px;
        flex-direction: column;
        gap: 12px;
    }

    .pm-quiz-check-btn {
        width: 100%;
    }
}

/* ========================================
   QUIZ LOCKED STATE (not logged in)
   ======================================== */
.pm-quiz-locked-section {
    position: relative;
    border-color: #333 !important;
}

.pm-quiz-locked-overlay {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.pm-quiz-locked-icon {
    margin-bottom: 16px;
    animation: pmLockPulse 2s ease-in-out infinite;
}

@keyframes pmLockPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.08); opacity: 0.85; }
}

.pm-quiz-locked-section h3 {
    color: var(--pm-gold, #D7BF81) !important;
}

.pm-quiz-locked-section p {
    color: #999 !important;
    margin-bottom: 24px !important;
}

.pm-quiz-locked-options {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    width: 100%;
    max-width: 480px;
    margin-bottom: 28px;
}

.pm-quiz-locked-option-fake {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    background: rgba(26, 26, 26, 0.6);
    border: 2px solid #2A2A2A;
    border-radius: 12px;
    pointer-events: none;
    opacity: 0.35;
    filter: blur(1px);
    user-select: none;
}

.pm-quiz-locked-option-num {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    border: 2px solid #3A3A3A;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: #555;
    flex-shrink: 0;
}

.pm-quiz-locked-option-text {
    font-size: 0.88rem;
    color: #555;
}

.pm-quiz-locked-hover-tooltip {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(11, 11, 11, 0.95);
    border: 1.5px solid var(--pm-gold, #D7BF81);
    border-radius: 12px;
    padding: 14px 24px;
    color: var(--pm-gold, #D7BF81);
    font-size: 0.88rem;
    font-weight: 600;
    white-space: nowrap;
    z-index: 10;
    align-items: center;
    gap: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    pointer-events: none;
}

.pm-quiz-locked-options:hover .pm-quiz-locked-hover-tooltip {
    display: flex;
}

.pm-quiz-locked-options:hover .pm-quiz-locked-option-fake {
    opacity: 0.15;
}

.pm-quiz-locked-btns {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.pm-quiz-locked-btns .pm-locked-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.9rem;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    font-family: 'Montserrat', sans-serif;
}

.pm-quiz-locked-btns .pm-locked-btn-primary {
    background: linear-gradient(135deg, var(--pm-gold, #D7BF81), #C4A94F);
    color: #0B0B0B;
    box-shadow: 0 4px 16px rgba(215, 191, 129, 0.2);
}

.pm-quiz-locked-btns .pm-locked-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(215, 191, 129, 0.3);
}

.pm-quiz-locked-btns .pm-locked-btn-secondary {
    background: transparent;
    border: 1.5px solid #444;
    color: #FFF;
}

.pm-quiz-locked-btns .pm-locked-btn-secondary:hover {
    border-color: var(--pm-gold, #D7BF81);
    color: var(--pm-gold, #D7BF81);
}

@media (max-width: 600px) {
    .pm-quiz-locked-options {
        grid-template-columns: 1fr;
    }
    .pm-quiz-locked-hover-tooltip {
        white-space: normal;
        text-align: center;
    }
}

/* ========================================
   EAR TRAINING QUIZ STYLES
   ======================================== */

/* Staff / Rhythm SVG visual */
.pm-quiz-staff-visual {
    width: 100%;
    max-width: 360px;
    margin: 0 auto 16px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(215,191,129,0.15);
    border-radius: 12px;
    padding: 16px 12px;
}
.pm-quiz-staff-visual svg {
    display: block;
    width: 100%;
    height: auto;
}

/* Piano keyboard area */
.pm-ear-piano-area {
    display: flex !important;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}
.pm-ear-piano-wrapper {
    width: 100%;
    max-width: 440px;
    overflow-x: auto;
    padding: 12px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(215,191,129,0.15);
    border-radius: 12px;
}
.pm-ear-piano-wrapper svg {
    display: block;
    margin: 0 auto;
}
.pm-ear-piano-key {
    cursor: pointer;
    transition: fill 0.15s;
}
.pm-ear-piano-key:hover {
    opacity: 0.85;
}
.pm-ear-piano-selected {
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    color: #aaa;
    text-align: center;
}
.pm-ear-piano-notes {
    color: var(--pm-gold, #D7BF81);
    font-weight: 600;
}

@media (max-width: 480px) {
    .pm-quiz-staff-visual {
        max-width: 100%;
        padding: 10px 6px;
    }
    .pm-ear-piano-wrapper {
        max-width: 100%;
        padding: 8px;
    }
}
/* #43: respect reduced-motion on quiz UI. */
@media (prefers-reduced-motion: reduce) {
    .pm-quiz-container *,
    .pm-quiz-option,
    .pm-quiz-feedback {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}