/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --background: #f8fafc;
    --surface: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    padding: 2rem 0;
    box-shadow: var(--shadow-lg);
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

header .tagline {
    font-size: 1rem;
    opacity: 0.9;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

/* Main Content */
main {
    flex: 1;
    padding: 2rem 0;
}

/* Intro Section */
.intro {
    text-align: center;
    margin-bottom: 3rem;
}

.intro h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.intro p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Surveys Grid */
.surveys-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.survey-card {
    background: var(--surface);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border-color);
}

.survey-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.survey-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-right: 0.5rem;
}

.badge {
    background-color: var(--success-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.survey-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.survey-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-size: 0.9375rem;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background-color: #475569;
}

.btn-large {
    padding: 0.875rem 2rem;
    font-size: 1rem;
}

/* Features Section */
.features {
    margin-top: 4rem;
    text-align: center;
}

.features h2 {
    font-size: 1.875rem;
    margin-bottom: 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--surface);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Survey Form */
.survey-container,
.results-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--surface);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.survey-title-section {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.survey-title-section h2 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.survey-form {
    margin-top: 2rem;
}

.question-block {
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: var(--background);
    border-radius: 8px;
}

.question-label {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.question-number {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.required {
    color: var(--error-color);
    margin-left: 0.25rem;
}

.radio-option,
.checkbox-option {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background: var(--surface);
    border-radius: 6px;
    border: 2px solid var(--border-color);
    transition: all 0.2s;
}

.radio-option:hover,
.checkbox-option:hover {
    border-color: var(--primary-color);
    background-color: #f1f5f9;
}

.radio-option input,
.checkbox-option input {
    margin-right: 0.75rem;
    cursor: pointer;
    width: 18px;
    height: 18px;
}

.radio-option label,
.checkbox-option label {
    cursor: pointer;
    flex: 1;
    font-weight: normal;
}

.form-textarea,
.form-input {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s;
    background: var(--surface);
}

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

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

/* Messages */
.message {
    padding: 1.25rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    font-weight: 500;
}

.message.success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.message.error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

/* Results Page */
.results-header {
    margin-bottom: 2.5rem;
}

.stats-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.stat-card {
    background: var(--background);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border: 2px solid var(--border-color);
}

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

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.results-questions {
    margin-bottom: 2rem;
}

.result-block {
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: var(--background);
    border-radius: 8px;
}

.result-question {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.chart-container {
    margin-top: 1rem;
}

.chart-bar-item {
    margin-bottom: 1rem;
}

.chart-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

.label-text {
    color: var(--text-primary);
    font-weight: 500;
}

.label-stats {
    color: var(--text-secondary);
    font-weight: 600;
}

.chart-bar-container {
    background-color: #e2e8f0;
    border-radius: 4px;
    height: 32px;
    overflow: hidden;
}

.chart-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 0.5rem;
    min-width: 2%;
}

.text-responses {
    margin-top: 1rem;
}

.text-response-item {
    background: var(--surface);
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 0.75rem;
    border-left: 3px solid var(--primary-color);
}

.response-text {
    color: var(--text-primary);
    font-style: italic;
}

.results-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.no-results,
.no-surveys {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

/* Footer */
footer {
    background-color: var(--text-primary);
    color: white;
    padding: 2rem 0;
    margin-top: auto;
}

footer p {
    text-align: center;
    opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }

    .intro h2 {
        font-size: 1.5rem;
    }

    .intro p {
        font-size: 1rem;
    }

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

    .survey-container,
    .results-container {
        padding: 1.5rem;
    }

    .survey-title-section h2 {
        font-size: 1.5rem;
    }

    .question-label {
        font-size: 1rem;
    }

    .form-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .survey-actions {
        flex-direction: column;
    }

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

    .stats-summary {
        grid-template-columns: 1fr;
    }

    .chart-label {
        flex-direction: column;
        gap: 0.25rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    header {
        padding: 1.5rem 0;
    }

    .survey-card {
        padding: 1.25rem;
    }

    .survey-container,
    .results-container {
        padding: 1.25rem;
    }

    .question-block {
        padding: 1rem;
    }
}

/* Print Styles */
@media print {
    header,
    footer,
    .btn,
    .survey-actions,
    .results-actions {
        display: none;
    }

    .survey-container,
    .results-container {
        box-shadow: none;
        padding: 0;
    }
}