:root {
    --color-dark: #221f20;
    --color-primary: #2d3192;
    --color-primary-alt: #373785;
    --color-primary-light: #2d328c;
    --color-accent: #07673a;
    --color-accent-dark: #1a6543;
    --color-light: #f7f8f8;
    --color-muted: #dde3e1;
    --color-white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(34, 31, 32, 0.08);
    --shadow-md: 0 4px 20px rgba(34, 31, 32, 0.1);
    --shadow-lg: 0 8px 40px rgba(45, 49, 146, 0.12);
    --radius: 12px;
    --radius-lg: 16px;
    --transition: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(160deg, var(--color-light) 0%, var(--color-muted) 100%);
    color: var(--color-dark);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-muted);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.navbar-logo {
    height: 44px;
    width: auto;
    object-fit: contain;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.4rem 0.75rem;
    border-radius: 8px;
    transition: background var(--transition);
}

.nav-link:hover {
    background: rgba(45, 49, 146, 0.08);
}

.nav-link-accent {
    background: var(--color-accent);
    color: var(--color-white);
}

.nav-link-accent:hover {
    background: var(--color-accent-dark);
}

.nav-link-muted {
    color: #666;
}

/* Main */
.main-content {
    flex: 1;
    padding: 2rem 1.5rem 3rem;
}

.footer {
    text-align: center;
    padding: 1.25rem;
    font-size: 0.8rem;
    color: #666;
    background: var(--color-white);
    border-top: 1px solid var(--color-muted);
}

/* Cards */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2rem;
}

/* Questionnaire */
.questionnaire-container {
    max-width: 720px;
    margin: 0 auto;
}

.progress-bar-wrapper {
    margin-bottom: 1.5rem;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.progress-track {
    height: 6px;
    background: var(--color-muted);
    border-radius: 99px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 99px;
    transition: width 0.4s ease;
    width: 0%;
}

.questionnaire-card {
    min-height: 400px;
    display: flex;
    flex-direction: column;
}

.step {
    display: none;
    flex-direction: column;
    flex: 1;
    animation: fadeIn 0.35s ease;
}

.step.active {
    display: flex;
}

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

.step-header {
    margin-bottom: 1.5rem;
}

.step-badge {
    display: inline-block;
    background: rgba(45, 49, 146, 0.1);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.3rem 0.75rem;
    border-radius: 99px;
    margin-bottom: 0.75rem;
}

.step-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.3;
}

.instruction-text {
    flex: 1;
    font-size: 1.05rem;
    color: var(--color-dark);
    line-height: 1.8;
}

.instruction-text p {
    margin-bottom: 1rem;
}

.instruction-text p:last-child {
    margin-bottom: 0;
}

.question-section {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 0.5rem;
}

.question-label {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 1.25rem;
    line-height: 1.4;
}

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

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid var(--color-muted);
    border-radius: var(--radius);
    background: var(--color-light);
    color: var(--color-dark);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(45, 49, 146, 0.15);
    background: var(--color-white);
}

.form-control.error {
    border-color: #c0392b;
}

textarea.form-control {
    resize: vertical;
    min-height: 140px;
}

.field-error {
    color: #c0392b;
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

/* Buttons */
.step-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-muted);
}

.step-actions-split {
    justify-content: space-between;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow var(--transition), background var(--transition);
    text-decoration: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    box-shadow: 0 4px 14px rgba(45, 49, 146, 0.35);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(45, 49, 146, 0.45);
}

.btn-secondary {
    background: var(--color-light);
    color: var(--color-primary);
    border: 2px solid var(--color-muted);
}

.btn-secondary:hover {
    background: var(--color-muted);
}

.btn-success {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-white);
    box-shadow: 0 4px 14px rgba(7, 103, 58, 0.35);
}

.btn-success:hover {
    box-shadow: 0 6px 20px rgba(7, 103, 58, 0.45);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-dark);
    color: var(--color-white);
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    box-shadow: var(--shadow-lg);
    z-index: 200;
    animation: slideUp 0.3s ease;
}

.toast.error {
    background: #c0392b;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Thank you */
.thank-you-container {
    max-width: 560px;
    margin: 2rem auto;
}

.thank-you-card {
    text-align: center;
    padding: 3rem 2rem;
}

.thank-you-icon {
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.thank-you-card h1 {
    font-size: 1.75rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.thank-you-message {
    font-size: 1.05rem;
    color: var(--color-dark);
    margin-bottom: 0.75rem;
}

.thank-you-sub {
    color: var(--color-accent);
    font-weight: 500;
}

/* Admin login */
.admin-login-container {
    max-width: 420px;
    margin: 2rem auto;
}

.admin-login-card {
    padding: 2.5rem 2rem;
}

.admin-login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.admin-login-header h1 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.admin-login-header p {
    color: #666;
    font-size: 0.9rem;
}

.admin-login-form .form-group {
    margin-bottom: 1.25rem;
}

.admin-login-form label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.4rem;
    color: var(--color-dark);
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
}

.alert-error {
    background: #fdecea;
    color: #c0392b;
    border: 1px solid #f5c6cb;
}

/* Admin dashboard */
.admin-container {
    max-width: 1200px;
    margin: 0 auto;
}

.admin-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.admin-header h1 {
    font-size: 1.75rem;
    color: var(--color-primary);
}

.admin-subtitle {
    color: #666;
    font-size: 0.95rem;
    margin-top: 0.25rem;
}

.admin-stat-pill {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    opacity: 0.9;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.admin-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.admin-chart-wide {
    grid-column: 1 / -1;
}

.admin-chart-card {
    padding: 1.5rem;
}

.chart-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 1rem;
}

.chart-wrapper {
    position: relative;
    height: 260px;
}

.chart-wrapper-donut {
    height: 280px;
}

.admin-responses-card,
.admin-recent-card {
    margin-bottom: 1.5rem;
    padding: 1.5rem;
}

.card-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.question-stats-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.question-stat-item {
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--color-muted);
}

.question-stat-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.question-stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.25rem;
}

.question-stat-section {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
}

.question-stat-rate {
    font-weight: 700;
    color: var(--color-primary);
}

.question-stat-label {
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.question-stat-bar {
    height: 8px;
    background: var(--color-muted);
    border-radius: 99px;
    overflow: hidden;
    margin-bottom: 0.35rem;
}

.question-stat-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 99px;
    transition: width 0.6s ease;
}

.question-stat-count {
    font-size: 0.8rem;
    color: #888;
}

.table-responsive {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.admin-table th {
    text-align: left;
    padding: 0.75rem 1rem;
    background: var(--color-light);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-bottom: 2px solid var(--color-muted);
}

.admin-table td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--color-muted);
}

.admin-table tr:hover td {
    background: rgba(45, 49, 146, 0.03);
}

.table-link {
    color: var(--color-accent);
    font-weight: 500;
    text-decoration: none;
}

.table-link:hover {
    text-decoration: underline;
}

.empty-state {
    text-align: center;
    color: #888;
    padding: 2rem;
}

.back-link {
    display: inline-block;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.back-link:hover {
    text-decoration: underline;
}

.submission-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1rem;
}

.submission-field-card {
    padding: 1.25rem;
}

.field-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 0.5rem;
}

.field-value {
    font-size: 0.95rem;
    color: var(--color-dark);
    white-space: pre-wrap;
}

/* Responsive */
@media (max-width: 768px) {
    .main-content {
        padding: 1.25rem 1rem 2rem;
    }

    .card {
        padding: 1.5rem 1.25rem;
    }

    .step-title {
        font-size: 1.4rem;
    }

    .question-label {
        font-size: 1.1rem;
    }

    .step-actions {
        flex-direction: column-reverse;
    }

    .step-actions .btn {
        width: 100%;
    }

    .step-actions-split {
        flex-direction: column-reverse;
    }

    .navbar-logo {
        height: 36px;
    }

    .navbar-actions {
        gap: 0.25rem;
    }

    .nav-link {
        font-size: 0.8rem;
        padding: 0.35rem 0.5rem;
    }

    .admin-grid {
        grid-template-columns: 1fr;
    }

    .admin-header {
        flex-direction: column;
    }

    .admin-stat-pill {
        align-self: flex-start;
    }

    .submission-detail-grid {
        grid-template-columns: 1fr;
    }

    .thank-you-card {
        padding: 2rem 1.25rem;
    }
}

@media (max-width: 480px) {
    .instruction-text {
        font-size: 0.95rem;
    }

    .navbar-inner {
        padding: 0.6rem 1rem;
    }
}