@font-face {
    font-family: 'Vazir';
    src: url('../fonts/Vazir.eot?#iefix') format('embedded-opentype'),
         url('../fonts/Vazir.woff2') format('woff2'),
         url('../fonts/Vazir.woff') format('woff'),
         url('../fonts/Vazir.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

:root {
    --primary-color: #F87A00;
    --primary-dark: #d96600;
    --primary-light: #FFB84D;
    --success-color: #27AE60;
    --danger-color: #E74C3C;
    --warning-color: #F39C12;
    --info-color: #3498DB;
    --light-color: #FAFBFC;
    --dark-color: #1F2937;
    --gray-color: #ECF0F1;
    --border-color: #E5E7EB;
    --bg-page: #FFF9F0;
    --bg-soft: #FFF5EB;
    --surface: #FFFFFF;
    --surface-alt: #F8F9FA;
    --text-color: #1F2937;
    --text-muted: #4B5563;
    --text-light: #6B7280;
    --shadow: 0 4px 6px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.12);
    --transition: all 0.3s ease;
    color-scheme: light;
}

* {
    font-family: 'Vazir', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html {
    scroll-behavior: smooth;
    color-scheme: light;
    background-color: var(--bg-page);
}

body {
    background: linear-gradient(135deg, var(--bg-page) 0%, var(--bg-soft) 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: var(--text-color);
    line-height: 1.6;
}

main {
    flex: 1;
    padding: 2rem 1rem;
}

.navbar {
    background: #FFFFFF;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-bottom: 3px solid var(--primary-color);
}

.navbar-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.75rem 1.5rem;
    width: 100%;
}

.navbar-brand {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--dark-color);
    text-decoration: none;
    transition: var(--transition);
}

.navbar-brand:hover {
    color: var(--primary-color);
}

.navbar-logo {
    width: 40px;
    height: 40px;
    margin-right: 0.75rem;
    border-radius: 8px;
}

.navbar-toggler {
    border-color: var(--primary-color);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.25rem rgba(248, 122, 0, 0.25);
}

.nav-link {
    color: var(--dark-color) !important;
    margin-right: 1.5rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

.survey-card {
    border: none;
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.survey-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2) !important;
}

.survey-card .card-title {
    color: var(--primary-color);
    font-weight: 600;
}

.form-control,
.form-select {
    border-radius: 8px;
    border: 2px solid var(--light-color);
    padding: 0.75rem;
    transition: var(--transition);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(248, 122, 0, 0.15);
}

.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--danger-color);
    background-color: rgba(231, 76, 60, 0.03);
}

.form-control.is-invalid:focus,
.form-select.is-invalid:focus {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 0.2rem rgba(231, 76, 60, 0.15);
}

.form-control.is-valid,
.form-select.is-valid {
    border-color: var(--success-color);
    background-color: rgba(39, 174, 96, 0.03);
}

.form-control.is-valid:focus,
.form-select.is-valid:focus {
    border-color: var(--success-color);
    box-shadow: 0 0 0 0.2rem rgba(39, 174, 96, 0.15);
}

.invalid-feedback {
    display: block;
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    font-weight: 500;
}

.valid-feedback {
    display: block;
    color: var(--success-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    font-weight: 500;
}

.form-group {
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-check {
    margin-bottom: 1rem;
    padding: 0.75rem;
    border-radius: 8px;
    transition: var(--transition);
}

.form-check:hover {
    background-color: rgba(248, 122, 0, 0.08);
}

.form-check-input {
    width: 1.3rem;
    height: 1.3rem;
    border-radius: 4px;
    border: 2px solid var(--primary-color);
    cursor: pointer;
    margin-left: 0.5rem;
    transition: var(--transition);
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(248, 122, 0, 0.25);
}

.form-check-label {
    cursor: pointer;
    user-select: none;
    margin-right: 0.5rem;
}

.btn {
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(248, 122, 0, 0.4);
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
}

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

.btn-success:hover {
    background-color: #157347;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(25, 135, 84, 0.4);
}

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

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

.card {
    border: none;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.card-header {
    border-bottom: 2px solid rgba(0, 0, 0, 0.1);
}

.form-label {
    color: var(--dark-color);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.form-label span.text-danger {
    margin-right: 0.25rem;
    font-weight: bold;
}

.alert {
    border: none;
    border-radius: 8px;
    animation: slideIn 0.3s ease-out;
}

.alert-success {
    background-color: rgba(25, 135, 84, 0.1);
    color: #155724;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    color: #721c24;
    border-left: 4px solid var(--danger-color);
}

.alert-info {
    background-color: rgba(13, 202, 240, 0.1);
    color: #0c5460;
    border-left: 4px solid var(--info-color);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    color: #856404;
    border-left: 4px solid var(--warning-color);
}

footer {
    background-color: rgba(0, 0, 0, 0.05);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.progress {
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    height: 2rem;
}

.progress-bar {
    background: linear-gradient(90deg, var(--success-color), #20c997);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
    font-size: 0.85rem;
}

.table {
    border-collapse: collapse;
}

.table thead {
    background-color: rgba(248, 122, 0, 0.08);
}

.table th {
    border: none;
    font-weight: 600;
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

.table td {
    border-color: rgba(0, 0, 0, 0.05);
    padding: 0.75rem;
}

.table tbody tr:hover {
    background-color: rgba(248, 122, 0, 0.04);
}

.options-container .form-check {
    margin-bottom: 1rem;
}

/* Ultra Small Devices - 320px and up */
@media (max-width: 479px) {
    html {
        font-size: 14px;
    }
    
    .survey-container {
        padding: 1rem 0.75rem;
        margin: 0.5rem;
        border-radius: 12px;
    }
    
    .navbar-container {
        padding: 0.5rem 0.75rem;
    }
    
    .navbar-brand {
        font-size: 0.95rem;
    }
    
    .navbar-logo {
        width: 32px;
        height: 32px;
        margin-right: 0.5rem;
    }
    
    .display-4 {
        font-size: 1.75rem;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .question-text {
        font-size: 1rem;
    }
    
    .form-control,
    .form-select {
        padding: 0.6rem 0.5rem;
        font-size: 16px;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
        width: 100%;
    }
    
    .progress {
        height: 1.75rem;
        font-size: 0.75rem;
    }
    
    .stats-cards {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    main {
        padding: 1rem 0.5rem;
    }
}

/* Small Devices - 480px to 767px */
@media (min-width: 480px) and (max-width: 767px) {
    .survey-container {
        padding: 1.25rem;
        margin: 1rem;
        max-width: 100%;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .question-text {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.95rem;
    }
    
    .button-group {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .button-group .btn {
        width: 100%;
    }
    
    .stats-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    
    .table {
        font-size: 0.85rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem;
    }
}

@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }

    .survey-card {
        margin-bottom: 1rem;
    }

    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .table {
        font-size: 0.85rem;
    }

    .survey-container {
        padding: 1.5rem 1rem;
        margin: 1rem;
        max-width: 100%;
    }

    .survey-header h1 {
        font-size: 1.5rem;
    }

    .survey-logo {
        width: 60px;
    }

    .question-text {
        font-size: 1.2rem;
    }

    .button-group {
        flex-direction: column;
        gap: 0.75rem;
    }

    .button-group .btn {
        flex: none;
        width: 100%;
    }

    .thank-you-container {
        padding: 1.5rem 1rem;
        margin: 1rem;
    }

    .thank-you-message h1 {
        font-size: 2rem;
    }

    .thank-you-message h2 {
        font-size: 1.2rem;
    }

    .thanks-image {
        width: 100%;
        max-width: 350px;
    }

    .thank-you-buttons {
        flex-direction: column;
    }

    .thank-you-buttons .btn {
        width: 100%;
    }

    .stats-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .stat-value {
        font-size: 1.75rem;
    }

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

    .table {
        font-size: 0.8rem;
    }

    .table th,
    .table td {
        padding: 0.5rem !important;
    }

    .rating-group {
        gap: 0.25rem;
    }

    .rating-label {
        font-size: 2rem;
    }
}

.transition-all {
    transition: var(--transition);
}

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

.survey-container {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    margin: 2rem auto;
    max-width: 700px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    animation: slideIn 0.5s ease-out;
}

.progress-container {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid #f0f0f0;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.progress-text {
    font-weight: 600;
    color: var(--dark-color);
}

.progress-percent {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background-color: #e9ecef;
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: 10px;
    transition: width 0.6s ease-out;
}

.survey-form-wrapper {
    animation: fadeIn 0.3s ease-out;
}

.survey-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.survey-logo {
    width: 80px;
    height: auto;
    margin-bottom: 1rem;
    animation: bounce 0.5s ease-out;
}

@keyframes bounce {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

.survey-header h1 {
    color: var(--primary-color);
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.survey-description {
    color: #666;
    font-size: 1rem;
    margin: 0;
}

.question-container {
    margin: 2rem 0;
}

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

.question-text {
    font-size: 1.4rem;
    color: var(--dark-color);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.required-badge {
    color: var(--danger-color);
    font-weight: 700;
}

.question-help {
    color: #999;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    margin-bottom: 0;
}

.question-input-area {
    margin: 1.5rem 0;
}

.question-input {
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    transition: var(--transition);
}

.question-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(248, 122, 0, 0.1);
}

.options-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.option-item {
    display: flex;
    align-items: center;
    padding: 0.875rem;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
}

.option-item:hover {
    background-color: rgba(248, 122, 0, 0.05);
    border-color: var(--primary-color);
}

.option-radio,
.option-checkbox {
    width: 20px;
    height: 20px;
    margin-left: 0.75rem;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.option-label {
    flex: 1;
    cursor: pointer;
    margin: 0;
    user-select: none;
    font-size: 1rem;
}

.rating-group {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.rating-input {
    display: none;
}

.rating-label {
    font-size: 2.5rem;
    cursor: pointer;
    opacity: 0.3;
    transition: var(--transition);
}

.rating-input:checked ~ .rating-label,
.rating-label:hover,
.rating-input:checked ~ .rating-label ~ .rating-label:hover {
    opacity: 1;
}

.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 2.5rem;
    justify-content: space-between;
}

.btn {
    flex: 1;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 10px;
    transition: var(--transition);
    border: none;
}

.btn-lg {
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
}

.btn-secondary {
    background-color: #f0f0f0;
    color: var(--dark-color);
}

.btn-secondary:hover {
    background-color: #e0e0e0;
    transform: translateY(-2px);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #20c997 100%);
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(25, 135, 84, 0.4);
}

.exit-info {
    text-align: center;
    margin-top: 1.5rem;
}

.exit-info p {
    color: #999;
    font-size: 0.9rem;
}

.thank-you-container {
    background: white;
    border-radius: 16px;
    padding: 3rem 2rem;
    margin: 2rem auto;
    max-width: 600px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    animation: slideIn 0.5s ease-out;
}

.thank-you-content {
    animation: fadeIn 0.6s ease-out;
}

.thank-you-logo {
    margin-bottom: 2rem;
}

.logo-image {
    width: 100px;
    height: auto;
    animation: bounce 0.6s ease-out;
}

.thanks-image-container {
    margin: 2rem 0;
}

.thanks-image {
    width: 280px;
    max-width: 100%;
    height: auto;
    animation: slideUp 0.5s ease-out;
}

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

.thank-you-message {
    margin: 2rem 0;
}

.thank-you-message h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.thank-you-message h2 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.thank-you-text {
    font-size: 1.1rem;
    color: #666;
    margin: 1rem 0;
}

.survey-info-card {
    background: rgba(248, 122, 0, 0.05);
    border: 2px solid var(--primary-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    text-align: right;
}

.info-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-label {
    font-weight: 600;
    color: var(--primary-color);
}

.info-value {
    color: var(--dark-color);
}

.status-completed {
    color: var(--success-color);
    font-weight: 700;
}

.thank-you-buttons {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

/* اعتبار سنجی فرم - Form Validation */
.alert-validation {
    background-color: #f8d7da;
    border: 2px solid var(--danger-color);
    border-radius: 12px;
    padding: 1.2rem 1.5rem;
    margin: 1.5rem 0;
    color: #721c24;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideDown 0.3s ease-out;
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.15);
}

.alert-validation i {
    font-size: 1.2rem;
    flex-shrink: 0;
    color: var(--danger-color);
}

.alert-validation strong {
    color: var(--danger-color);
    font-weight: 700;
}

.alert-validation.alert-danger {
    background-color: #f8d7da;
    border-color: var(--danger-color);
    color: #721c24;
}

.alert-validation.alert-success {
    background-color: #d4edda;
    border-color: var(--success-color);
    color: #155724;
}

/* Input error state */
.question-input.is-invalid,
.form-control.is-invalid {
    border-color: var(--danger-color);
    background-image: none;
}

.question-input.is-invalid:focus,
.form-control.is-invalid:focus {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 0.2rem rgba(231, 76, 60, 0.25);
}

/* Prevent submit button when validation fails */
.btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.thank-you-buttons .btn {
    flex: 1;
    min-width: 200px;
}

.completion-message {
    background-color: rgba(25, 135, 84, 0.1);
    border: 2px solid var(--success-color);
    border-radius: 10px;
    padding: 1rem;
    margin-top: 2rem;
    color: #155724;
    font-size: 0.95rem;
}

.stats-header {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.stat-card {
    background: linear-gradient(135deg, #f5f5f5 0%, #e9ecef 100%);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
}

.stat-card.completed {
    background: linear-gradient(135deg, rgba(25, 135, 84, 0.1) 0%, rgba(25, 135, 84, 0.05) 100%);
    border: 2px solid var(--success-color);
}

.stat-card.incomplete {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.1) 0%, rgba(220, 53, 69, 0.05) 100%);
    border: 2px solid var(--danger-color);
}

.stat-card.total {
    background: linear-gradient(135deg, rgba(248, 122, 0, 0.1) 0%, rgba(248, 122, 0, 0.05) 100%);
    border: 2px solid var(--primary-color);
}

.stat-card.percentage {
    background: linear-gradient(135deg, rgba(13, 202, 240, 0.1) 0%, rgba(13, 202, 240, 0.05) 100%);
    border: 2px solid var(--info-color);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    color: #666;
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

.analysis-card {
    border: none;
    border-radius: 12px;
    overflow: hidden;
}

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

.question-info h5 {
    margin-bottom: 0.5rem;
}

.mini-progress {
    height: 20px;
    background-color: #e9ecef;
}

.text-answers-list {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
}

.text-answer-item {
    padding: 1rem;
    border-bottom: 1px solid #f0f0f0;
    background: rgba(248, 122, 0, 0.02);
}

.text-answer-item:last-child {
    border-bottom: none;
}

.answer-content {
    margin: 0 0 0.5rem 0;
    color: var(--dark-color);
    line-height: 1.6;
}

.answer-meta {
    color: #999;
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}


.navbar-logo {
    height: 42px;
    width: auto;
    max-height: 42px;
    object-fit: contain;
    transition: transform 0.2s ease-in-out;
}

.navbar-logo:hover {
    transform: scale(1.05);
}

@media (max-width: 992px) {
    .navbar-logo {
        height: 32px;
    }
}

.custom-navbar {
    position: sticky;
    top: 0;
    z-index: 999;
    transition: all 0.3s ease;
    padding: 12px 0;
}

.custom-navbar.scrolled {
    padding: 6px 0;
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.navbar-logo-wrapper {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
}

.navbar-logo {
    height: 45px;
    width: auto;
    object-fit: contain;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .navbar-logo {
        height: 32px;
    }
}

.navbar-logo:hover {
    transform: scale(1.05);
}