:root {
    --color-dark: #221f20;
    --color-primary: #2d3192;
    --color-green: #07673a;
    --color-purple: #373785;
    --color-primary-alt: #2d328c;
    --color-light: #f7f8f8;
    --color-green-dark: #1a6543;
    --color-border: #dde3e1;
    --shadow: 0 4px 20px rgba(34, 31, 32, 0.08);
    --radius: 12px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--color-light);
    color: var(--color-dark);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.navbar {
    background: linear-gradient(135deg, #fff 0%, #1b1b6c 70%);
    color: white;
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow);
}

.navbar-inner {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.navbar-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.logo-bd {
    height: 48px;
    width: auto;
}

.logo-c1 {
    height: 40px;
    width: auto;
}

.navbar-title {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-align: center;
}

.main-content {
    flex: 1;
    max-width: 960px;
    width: 100%;
    margin: 2rem auto;
    padding: 0 1rem;
}

.footer {
    background: var(--color-dark);
    color: var(--color-border);
    text-align: center;
    padding: 1rem;
    font-size: 0.85rem;
}

.card {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.card-header {
    background: linear-gradient(135deg, var(--color-green) 0%, var(--color-green-dark) 100%);
    color: white;
    padding: 1.5rem 2rem;
}

.card-header h2 {
    font-size: 1.5rem;
    margin-top: 0.5rem;
}

.section-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.section-badge.success {
    background: rgba(255, 255, 255, 0.25);
}

.section-badge.admin {
    background: rgba(255, 255, 255, 0.2);
}

.card-body {
    padding: 2rem;
}

.card-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    background: var(--color-light);
}

.intro-text {
    line-height: 1.7;
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

.info-list {
    margin-top: 1.5rem;
    padding-left: 1.5rem;
    line-height: 1.8;
}

.info-list li {
    margin-bottom: 0.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
}

.btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(45, 49, 146, 0.25);
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-secondary {
    background: var(--color-purple);
    color: white;
}

.btn-success {
    background: var(--color-green);
    color: white;
}

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

.btn-block {
    width: 100%;
}

.progress-bar-container {
    background: var(--color-border);
    border-radius: 999px;
    height: 8px;
    margin-bottom: 0.5rem;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--color-green), var(--color-primary));
    height: 100%;
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 999px;
}

.progress-text {
    text-align: center;
    color: var(--color-purple);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.questionnaire-form {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2rem;
    border: 1px solid var(--color-border);
}

.step-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.step-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.step-section {
    color: var(--color-green-dark);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.step-title {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-dark);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.field-error {
    color: #c0392b;
    font-size: 0.85rem;
    margin-top: 0.35rem;
    display: block;
}

.form-errors {
    background: #fdecea;
    border: 1px solid #f5c6cb;
    color: #721c24;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.wizard-nav {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.radio-group,
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.radio-group ul,
.checkbox-group ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 0;
    margin: 0;
    width: 100%;
}

.radio-group li,
.checkbox-group li {
    width: 100%;
}

.radio-group label,
.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    font-weight: 500;
}

.radio-group label:hover,
.checkbox-group label:hover {
    border-color: var(--color-primary-alt);
    background: rgba(45, 50, 140, 0.04);
}

.radio-group input:checked + span,
.checkbox-group input:checked + span,
.radio-group label:has(input:checked),
.checkbox-group label:has(input:checked) {
    border-color: var(--color-primary);
    background: rgba(45, 49, 146, 0.08);
}

.radio-group input,
.checkbox-group input {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

.extra-field {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px dashed var(--color-border);
}

.extra-field[hidden] {
    display: none;
}

.grid-table {
    width: 100%;
    border-collapse: collapse;
}

.grid-table th,
.grid-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.grid-table th {
    background: var(--color-light);
    color: var(--color-purple);
    font-size: 0.85rem;
}

.grid-table td:first-child {
    font-weight: 500;
    min-width: 200px;
}

.grid-radios {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.grid-radios label {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
}

.grid-radios label:has(input:checked) {
    border-color: var(--color-primary);
    background: rgba(45, 49, 146, 0.08);
}

.grid-radios input {
    accent-color: var(--color-primary);
}

.step-error {
    color: #c0392b;
    font-size: 0.9rem;
    margin-top: 0.75rem;
    display: none;
}

.step-error.visible {
    display: block;
}

.login-card {
    max-width: 420px;
    margin: 2rem auto;
}

.login-form .form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-size: 1rem;
}

.dashboard {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2rem;
    border: 1px solid var(--color-border);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--color-border);
}

.dashboard-header h2 {
    color: var(--color-primary);
    font-size: 1.5rem;
}

.dashboard-subtitle {
    color: var(--color-purple);
    margin-top: 0.25rem;
}

.dashboard-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.chart-card {
    background: var(--color-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.chart-card-wide {
    margin-bottom: 1.5rem;
}

.chart-card h3 {
    color: var(--color-green-dark);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.empty-state {
    padding: 2rem;
    text-align: center;
    color: var(--color-purple);
}

.text-responses-section {
    margin-top: 2rem;
}

.text-responses-section h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.response-detail {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.response-detail summary {
    padding: 1rem 1.25rem;
    cursor: pointer;
    background: var(--color-light);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.response-detail summary::-webkit-details-marker {
    display: none;
}

.response-date {
    font-size: 0.85rem;
    color: var(--color-purple);
}

.response-body {
    padding: 1.25rem;
    line-height: 1.7;
}

.response-body p {
    margin-bottom: 0.75rem;
}

@media (max-width: 640px) {
    .navbar-title {
        font-size: 0.95rem;
    }

    .card-body,
    .questionnaire-form,
    .dashboard {
        padding: 1.25rem;
    }

    .wizard-nav {
        flex-direction: column;
    }

    .wizard-nav .btn {
        width: 100%;
    }

    .grid-table {
        display: block;
        overflow-x: auto;
    }
}