:root {
    --primary-color: #b0e0c6;    
    --primary-dark: #8fbc9f;     
    --dark-color: #000000;       
    --text-color: #212121;
    --light-text: #757575;
    --white: #FFFFFF;
    --gray: #F5F5F5;
    --light-color: #f9fdfb;      
    --border-color: #E0E0E0;
    --danger-color: #d9534f;     
    --warning-color: #f0ad4e;    
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Kanit', sans-serif;
    color: var(--text-color);
    background-color: var(--white);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}


header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
}

.logo {
    display: flex;
    align-items: center;
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--dark-color);
}

.logo i {
    color: var(--primary-color);
    margin-right: 10px;
    font-size: 1.8rem;
}

.logo img { height: 42px; margin-right: 10px; display: block; }

.menu-toggle { display:none; background:none; border:none; font-size:1.6rem; line-height:1; padding:8px; cursor:pointer; }

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

nav ul li a:hover {
    color: var(--primary-color);
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s;
}

nav ul li a:hover::after {
    width: 100%;
}


.hero {
    background: linear-gradient(135deg, var(--light-color) 0%, var(--white) 100%);
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--light-text);
    max-width: 800px;
    margin: 0 auto 40px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: var(--dark-color);
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s;
    border: 2px solid var(--primary-color);
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--dark-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-outline {
    background-color: transparent;
    color: var(--dark-color);
    border: 2px solid var(--primary-dark);
}


.btn-outline:hover {
    background-color: var(--primary-dark);
    color: var(--dark-color);
}


.checklist-item.unanswered {
    border: 2px solid var(--danger-color) !important;
    background-color: #fff7f7;
}


.accordion {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--white);
    margin-bottom: 12px;
}
.accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    cursor: pointer;
    font-weight: 600;
}
.accordion-body {
    display: none;
    padding: 0 16px 16px 16px;
}
.accordion.open .accordion-body { display: block; }
.pill {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--primary-light);
    color: var(--dark-color);
    font-size: 0.8rem;
    margin-left: 8px;
}


.btn.selected {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--dark-color);
}
.btn.correct { background-color: #e6ffea; border-color: #2ecc71; color: #000; }
.btn.wrong { background-color: #fff0f0; border-color: #e74c3c; color: #000; }


.standards {
    padding: 80px 0;
    background-color: var(--gray);
}


.hero-cta { margin: 16px 0 24px; display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
.hero-figure { margin: 20px auto 0; max-width: 980px; }
.hero-figure img { width: 100%; height: auto; border: 1px solid #e0e0e0; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.06); }
.hero-figure figcaption { color: var(--light-text); font-size: .95rem; margin-top: 8px; }

.countdown-text { color: var(--dark-color); font-weight: 600; }
.countdown-inline {
    color: var(--primary-dark);
    font-weight: 800;
    display: block;
    font-size: 1.6rem;
    margin-top: 4px;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.2rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.section-title p {
    font-size: 1.1rem;
    color: var(--light-text);
    max-width: 700px;
    margin: 0 auto;
}


.card ul { list-style-position: inside; padding-left: 0; margin-left: 0; }
.card li { margin: 4px 0; }

.card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 16px;
}

.url-hints { font-size: 0.92rem; color: #444; }
.url-hints .ok { color: #2e7d32; }
.url-hints .warn { color: #ef6c00; }
.url-hints .bad { color: #c62828; }

.standards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.standard-card {
    background-color: var(--white);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
    cursor: pointer;
}

.standard-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.standard-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.standard-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.standard-card p {
    color: var(--light-text);
    margin-bottom: 20px;
}


.assessment {
    padding: 80px 0;
}

.assessment-container {
    max-width: 900px;
    margin: 0 auto;
}

.assessment-tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.tab {
    padding: 15px 25px;
    cursor: pointer;
    font-weight: 500;
    color: var(--light-text);
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
    margin-bottom: -1px;
}

.tab.active {
    color: var(--primary-dark);
    border-bottom-color: var(--primary-dark);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.checklist-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}


.checklist-item {
    background-color: var(--white);
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

.checklist-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 15px;
}

.checklist-text {
    font-weight: 600;
    font-size: 1.1rem;
    flex-grow: 1;
}

.checklist-level {
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--white);
    flex-shrink: 0;
}

.level-must {
    background-color: var(--danger-color);
}

.level-should {
    background-color: var(--warning-color);
}

.level-may {
    background-color: #e7f1ff;
    color: #003a8c;
}

.checklist-options {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.checklist-options label {
    display: flex;
    align-items: center;
    cursor: pointer;
    gap: 5px;
}

.subsection { margin-bottom: 28px; text-align: left; }
.subsection-title { font-size: 1.15rem; margin: 0 0 10px 0; color: var(--dark-color); }

.btn-details {
    background: none;
    border: none;
    color: var(--primary-dark);
    font-size: 1rem;
    cursor: pointer;
    font-weight: 700;
    flex-shrink: 0;
}
.btn-details:hover {
    text-decoration: underline;
}




.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    overflow: auto;
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: var(--white);
    margin: 10% auto;
    padding: 30px;
    border-radius: 10px;
    width: 80%;
    max-width: 700px;
    position: relative;
    animation: modalOpen 0.5s;
}

@keyframes modalOpen {
    from { opacity: 0; transform: translateY(-50px); }
    to { opacity: 1; transform: translateY(0); }
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--light-text);
    transition: color 0.3s;
}

.close-modal:hover {
    color: var(--text-color);
}

.modal-header {
    margin-bottom: 20px;
}

.modal-header h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
}

.modal-body {
    margin-bottom: 20px;
}

.modal-body h4 {
    margin: 15px 0 10px 0;
    color: var(--primary-dark);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
}

.modal-body p {
    margin-bottom: 15px;
    color: var(--light-text);
}

.modal-body ul {
    padding-left: 20px;
    margin-bottom: 15px;
}

.modal-body li {
    margin-bottom: 8px;
    color: var(--text-color);
}


#modalBody .modal-tips {
    list-style-type: none;
    padding-left: 0;
}

#modalBody .modal-tips li {
    background-color: var(--light-color);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 4px;
}

#modalBody .modal-tips li strong {
    display: block;
    color: var(--dark-color);
    margin-bottom: 5px;
}




.results {
    padding: 80px 0;
    background-color: var(--gray);
}

.results-container {
    max-width: 900px;
    margin: 0 auto;
}

.results-header {
    text-align: center;
    margin-bottom: 40px;
}

.results-header h2 {
    font-size: 2.2rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}


.results-details {
    background-color: var(--white);
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 30px;
}

#reportOutput h3 {
    font-size: 1.5rem;
    margin: 20px 0 15px 0;
    color: var(--dark-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}
#reportOutput .report-list { 
    list-style-type: none; 
    padding-left: 0; 
}
#reportOutput .report-list li { 
    padding: 0.8rem; 
    border-bottom: 1px solid var(--border-color); 
    font-weight: 500;
}
#reportOutput .report-list li:nth-child(even) { 
    background-color: var(--light-color); 
}
.report-item-must { 
    border-left: 4px solid var(--danger-color); 
}
.report-item-should { 
    border-left: 4px solid var(--warning-color); 
}
.no-items { 
    color: var(--primary-dark); 
    font-weight: 600;
}



.action-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}


footer {
    background-color: var(--dark-color);
    color: var(--white);
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-column h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.footer-column p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: var(--white);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}


@media (max-width: 992px) {
    .header-container {
        flex-direction: column;
        text-align: center;
    }
    nav ul {
        margin-top: 15px;
    }
    nav ul li {
        margin: 0 10px;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .section-title h2 {
        font-size: 1.8rem;
    }
}
@media (max-width: 768px) {
    .hero {
        padding: 60px 0;
    }
    .hero h1 {
        font-size: 1.8rem;
    }
    .hero p {
        font-size: 1rem;
    }
    .standards, .assessment, .results {
        padding: 60px 0;
    }
    .assessment-tabs {
        overflow-x: auto;
    }
    .modal-content {
        width: 90%;
        padding: 20px;
    }
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }

    header { position: sticky; top: 0; --header-height: 56px; }
    .header-container { flex-direction: row; gap: 8px; align-items: center; padding: 8px 0; }
    .logo { font-size: 1.1rem; }
    .logo img { height: 32px; }
    .menu-toggle { display:block; }
    nav { position: static; }
    nav ul {
        display:none;
        position: fixed;
        top: var(--header-height);
        left: 0; right: 0;
        width: 100vw;
        padding:12px 16px;
        background:#fff;
        border-top:1px solid var(--border-color);
        box-shadow:0 6px 16px rgba(0,0,0,.12);
        flex-direction:column; gap:10px;
        z-index: 1000;
        box-sizing: border-box;
    }
    .header-container.nav-open nav ul { display:flex; }
    nav ul li { margin: 0; }
}
@media (max-width: 576px) {
    /* kept collapsed navigation; no stacking full-height header */
}