/**
 * MCQ Assessment Pro - Frontend Styles
 * Minimal, clean UI with transparent backgrounds
 */

:root {
    --mcq-border: #d0d0d0;
    --mcq-text: #333333;
    --mcq-text-light: #666666;
    --mcq-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --mcq-radius: 4px;
    --mcq-transition: all 0.2s ease;
}

/* === Main Container === */
.mcq-assessment-widget {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    color: var(--mcq-text);
}

/* === Assessment Info === */
.mcq-assessment-info {
    background: transparent;
    border: 1px solid var(--mcq-border);
    padding: 30px;
    border-radius: var(--mcq-radius);
    margin-bottom: 30px;
}

.mcq-assessment-title {
    font-size: 28px;
    font-weight: 600;
    margin: 0 0 15px 0;
    line-height: 1.3;
    color: var(--mcq-text);
}

.mcq-assessment-description {
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 20px;
    color: var(--mcq-text-light);
}

.mcq-assessment-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.mcq-meta-item {
    background: transparent;
    border: 1px solid var(--mcq-border);
    padding: 12px 15px;
    border-radius: var(--mcq-radius);
    display: flex;
    align-items: center;
    gap: 10px;
}

.mcq-meta-label {
    font-size: 13px;
    color: var(--mcq-text-light);
}

.mcq-meta-value {
    font-size: 16px;
    font-weight: 600;
    margin-left: auto;
    color: var(--mcq-text);
}

/* === Buttons === */
.mcq-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 15px;
    font-weight: 500;
    background: transparent;
    color: var(--mcq-text);
    border: 1px solid var(--mcq-border);
    border-radius: var(--mcq-radius);
    cursor: pointer;
    transition: var(--mcq-transition);
    text-decoration: none;
    line-height: 1.5;
}

.mcq-btn:hover {
    border-color: var(--mcq-text);
    background: rgba(0, 0, 0, 0.02);
}

.mcq-btn:active {
    background: rgba(0, 0, 0, 0.05);
}

.mcq-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.mcq-btn-primary,
.mcq-btn-secondary,
.mcq-btn-success,
.mcq-btn-payment {
    background: transparent;
    color: var(--mcq-text);
    border: 1px solid var(--mcq-border);
}

.mcq-btn-large {
    padding: 14px 30px;
    font-size: 16px;
}

.mcq-btn-block {
    width: 100%;
}

/* === Notices === */
.mcq-notice {
    padding: 12px 15px;
    border-radius: var(--mcq-radius);
    margin-bottom: 20px;
    border: 1px solid var(--mcq-border);
    background: transparent;
}

.mcq-notice-info,
.mcq-notice-error,
.mcq-notice-success {
    background: transparent;
    border: 1px solid var(--mcq-border);
    color: var(--mcq-text);
}

/* === Registration Form === */
.mcq-registration-form,
.mcq-payment-section {
    background: transparent;
    border: 1px solid var(--mcq-border);
    padding: 25px;
    border-radius: var(--mcq-radius);
    margin-bottom: 30px;
}

.mcq-form-title {
    font-size: 20px;
    font-weight: 600;
    margin: 0 0 20px 0;
    color: var(--mcq-text);
}

.mcq-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 15px;
}

.mcq-form-group {
    margin-bottom: 15px;
}

.mcq-form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--mcq-text);
    font-size: 14px;
}

.mcq-form-control {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    border: 1px solid var(--mcq-border);
    border-radius: var(--mcq-radius);
    transition: var(--mcq-transition);
    box-sizing: border-box;
    background: transparent;
}

.mcq-form-control:focus {
    outline: none;
    border-color: var(--mcq-text);
}

.mcq-field-error {
    display: block;
    color: var(--mcq-text);
    font-size: 12px;
    margin-top: 4px;
}

.mcq-field-help {
    display: block;
    color: var(--mcq-text-light);
    font-size: 12px;
    margin-top: 4px;
}

/* === Questions === */
.mcq-questions-container {
    background: transparent;
}

.mcq-question-card {
    background: transparent;
    border: 1px solid var(--mcq-border);
    padding: 25px;
    border-radius: var(--mcq-radius);
    margin-bottom: 20px;
}

.mcq-question-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.mcq-question-number {
    font-weight: 600;
    color: var(--mcq-text-light);
    font-size: 13px;
}

.mcq-question-text {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 20px;
    color: var(--mcq-text);
}

.mcq-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mcq-option {
    display: flex;
    align-items: flex-start;
    padding: 12px 15px;
    border: 1px solid var(--mcq-border);
    border-radius: var(--mcq-radius);
    cursor: pointer;
    transition: var(--mcq-transition);
    background: transparent;
}

.mcq-option:hover {
    border-color: var(--mcq-text);
    background: rgba(0, 0, 0, 0.02);
}

.mcq-option input[type="radio"],
.mcq-option input[type="checkbox"] {
    margin-right: 12px;
    margin-top: 3px;
    cursor: pointer;
}

.mcq-option-text {
    flex: 1;
    font-size: 15px;
    line-height: 1.5;
    color: var(--mcq-text);
}

.mcq-option.selected {
    border-color: var(--mcq-text);
    background: rgba(0, 0, 0, 0.03);
}

/* === Question Navigation === */
.mcq-question-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-top: 30px;
    border-top: 1px solid var(--mcq-border);
}

.mcq-progress {
    flex: 1;
    text-align: center;
}

.mcq-progress-text {
    font-size: 14px;
    color: var(--mcq-text-light);
    margin-bottom: 8px;
}

.mcq-progress-bar {
    height: 4px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 2px;
    overflow: hidden;
    max-width: 300px;
    margin: 0 auto;
}

.mcq-progress-fill {
    height: 100%;
    background: var(--mcq-text);
    transition: width 0.3s ease;
}

/* === Results Page === */
.mcq-results-container {
    background: transparent;
}

.mcq-results-summary {
    background: transparent;
    border: 1px solid var(--mcq-border);
    padding: 30px;
    border-radius: var(--mcq-radius);
    margin-bottom: 30px;
    text-align: center;
}

.mcq-results-title {
    font-size: 24px;
    font-weight: 600;
    margin: 0 0 10px 0;
    color: var(--mcq-text);
}

.mcq-results-status {
    font-size: 16px;
    margin-bottom: 25px;
    color: var(--mcq-text-light);
}

.mcq-results-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.mcq-stat-item {
    text-align: center;
}

.mcq-stat-value {
    font-size: 32px;
    font-weight: 600;
    color: var(--mcq-text);
    display: block;
    margin-bottom: 5px;
}

.mcq-stat-label {
    font-size: 13px;
    color: var(--mcq-text-light);
}

/* === Answer Review === */
.mcq-answer-review {
    background: transparent;
    border: 1px solid var(--mcq-border);
    padding: 25px;
    border-radius: var(--mcq-radius);
    margin-bottom: 20px;
}

.mcq-review-question {
    margin-bottom: 15px;
}

.mcq-review-question-text {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 12px;
    color: var(--mcq-text);
}

.mcq-review-option {
    padding: 10px 12px;
    margin-bottom: 8px;
    border: 1px solid var(--mcq-border);
    border-radius: var(--mcq-radius);
    background: transparent;
}

.mcq-review-option.correct {
    border-color: var(--mcq-text);
}

.mcq-review-option.incorrect {
    opacity: 0.6;
}

.mcq-review-option.user-answer {
    font-weight: 500;
}

.mcq-explanation {
    margin-top: 12px;
    padding: 12px;
    background: rgba(0, 0, 0, 0.02);
    border-left: 2px solid var(--mcq-border);
    font-size: 14px;
    line-height: 1.5;
    color: var(--mcq-text-light);
}

/* === Timer === */
.mcq-timer {
    position: fixed;
    top: 20px;
    right: 20px;
    background: transparent;
    border: 1px solid var(--mcq-border);
    padding: 12px 20px;
    border-radius: var(--mcq-radius);
    font-size: 16px;
    font-weight: 600;
    color: var(--mcq-text);
    box-shadow: var(--mcq-shadow);
    z-index: 1000;
}

.mcq-timer.warning {
    border-color: var(--mcq-text);
}

/* === Loading Spinner === */
.mcq-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.mcq-spinner {
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--mcq-text);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* === Responsive === */
@media (max-width: 768px) {
    .mcq-assessment-widget {
        padding: 15px;
    }

    .mcq-assessment-info,
    .mcq-question-card,
    .mcq-results-summary {
        padding: 20px;
    }

    .mcq-form-row {
        grid-template-columns: 1fr;
    }

    .mcq-assessment-meta {
        grid-template-columns: 1fr;
    }

    .mcq-question-nav {
        flex-direction: column;
        gap: 15px;
    }

    .mcq-timer {
        position: static;
        margin-bottom: 20px;
        text-align: center;
    }
}

/* === Modal/Popup === */
.mcq-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mcq-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mcq-modal {
    background: white;
    border: 1px solid var(--mcq-border);
    border-radius: var(--mcq-radius);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.mcq-modal-overlay.active .mcq-modal {
    transform: scale(1);
}

.mcq-modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--mcq-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mcq-modal-title {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    color: var(--mcq-text);
}

.mcq-modal-close {
    background: none;
    border: none;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    color: var(--mcq-text-light);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--mcq-transition);
}

.mcq-modal-close:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--mcq-text);
}

.mcq-modal-body {
    padding: 25px;
}

.mcq-modal-text {
    font-size: 15px;
    line-height: 1.6;
    color: var(--mcq-text);
    margin: 0 0 20px 0;
}

.mcq-modal-footer {
    padding: 15px 25px;
    border-top: 1px solid var(--mcq-border);
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.mcq-modal-footer .mcq-btn {
    min-width: 100px;
}

/* === Utility Classes === */
.mcq-text-center {
    text-align: center;
}

.mcq-mt-20 {
    margin-top: 20px;
}

.mcq-mb-20 {
    margin-bottom: 20px;
}

.mcq-hidden {
    display: none;
}