/* 
 * Інтерактивний застосунок ДРТ - Клініка доктора Медведева
 * Фірмові кольори: #00a5e0 (блакитний), #008080 (бірюзовий), #00cc66 (зелений)
 */

:root {
    --primary-color: #00a5e0;
    --secondary-color: #008080;
    --accent-color: #00cc66;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 5px 20px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 20px 0;
    box-shadow: var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.clinic-logo {
    height: 60px;
    width: auto;
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.phone-btn {
    background-color: var(--accent-color);
    color: var(--white);
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.phone-btn:hover {
    background-color: #00b377;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Navigation */
.navigation {
    background-color: var(--white);
    box-shadow: var(--shadow);
}

.nav-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 15px 0;
}

.nav-btn {
    background-color: var(--bg-light);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.nav-btn:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.nav-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-color: var(--secondary-color);
}

/* Main Content */
.main-content {
    padding: 40px 0;
    min-height: calc(100vh - 400px);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.card {
    background-color: var(--white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 2rem;
    color: var(--white);
}

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

.card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* Info Box */
.info-box {
    background: linear-gradient(135deg, rgba(0, 165, 224, 0.1), rgba(0, 128, 128, 0.1));
    border-left: 4px solid var(--primary-color);
    padding: 20px;
    margin: 20px 0;
    border-radius: 8px;
}

.info-box h4 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* Process Steps */
.process-steps {
    margin: 40px 0;
}

.step {
    background-color: var(--white);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    position: relative;
    padding-left: 80px;
}

.step-number {
    position: absolute;
    left: 20px;
    top: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    font-weight: bold;
}

.step h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.step-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 20px 0;
    box-shadow: var(--shadow);
}

.step-subsection {
    margin-left: 20px;
    padding: 20px;
    background-color: var(--bg-light);
    border-radius: 8px;
    margin-top: 15px;
}

.step-subsection h4 {
    color: var(--secondary-color);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Lists */
ul {
    list-style: none;
    padding-left: 0;
}

ul li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
}

ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
    font-size: 1.2rem;
}

/* Images */
.content-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 30px 0;
    box-shadow: var(--shadow-lg);
}

/* Statistics */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* Glossary */
.glossary-controls {
    margin-bottom: 30px;
}

.search-box {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    font-size: 1rem;
    margin-bottom: 15px;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid var(--primary-color);
    background-color: var(--white);
    color: var(--primary-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.glossary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.glossary-item {
    background-color: var(--white);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.glossary-term {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* FAQ */
.faq-item {
    background-color: var(--white);
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: var(--bg-light);
}

.faq-question h3 {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin: 0;
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.active {
    padding: 20px;
    max-height: 500px;
}

/* Charts */
.chart-container {
    background-color: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin: 30px 0;
    height: 400px;
}

/* Footer */
.footer {
    background-color: var(--text-dark);
    color: var(--white);
    padding: 40px 0 20px;
    margin-top: 60px;
}

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

.footer-section h3,
.footer-section h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.footer-section p {
    margin-bottom: 10px;
    opacity: 0.9;
}

.footer-section i {
    color: var(--accent-color);
    margin-right: 10px;
}

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

/* Scroll to top button */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 165, 224, 0.4);
}

.scroll-top-btn:active {
    transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 768px) {
    .scroll-top-btn {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
    }
    
    .header h1 {
        font-size: 1.2rem;
    }
    
    .clinic-logo {
        height: 50px;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .nav-buttons {
        gap: 8px;
        padding: 10px 0;
    }
    
    .nav-btn {
        padding: 10px 16px;
        font-size: 0.9rem;
        width: calc(50% - 4px);
        justify-content: center;
    }
    
    .nav-btn i {
        display: none;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .step {
        padding-left: 20px;
    }
    
    .step-number {
        position: relative;
        left: 0;
        top: 0;
        margin-bottom: 15px;
    }
    
    .chart-container {
        height: 300px;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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