/* CSS-переменные для дизайн-системы */
:root {
    --bg-dark: #0b0f19;
    --bg-card: #151c2c;
    --primary: #10b981; /* emerald-500 */
    --primary-hover: #059669; /* emerald-600 */
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    --shadow: rgba(0, 0, 0, 0.4);
    --font-sans: 'Inter', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Сброс базовых стилей */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.text-center { text-align: center; }
.text-left { text-align: left; }

/* Кнопки с микро-анимациями */
.btn {
    display: inline-block;
    background-color: var(--primary);
    color: #ffffff;
    border: none;
    font-family: var(--font-heading);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
    box-shadow: 0 4px 14px 0 rgba(16, 185, 129, 0.3);
}

.btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(16, 185, 129, 0.4);
}

.btn:active {
    transform: translateY(0);
}

.btn-sm {
    padding: 10px 18px;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* Header */
.header {
    background-color: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.logo-desc {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-right: 24px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav a:hover {
    color: var(--text-main);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    position: relative;
    background-image: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
                      radial-gradient(circle at 10% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
}

.hero-container {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 3.2rem;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -1px;
    color: #ffffff;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    font-weight: 400;
}

.hero-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.hero-note::before {
    content: '✓';
    color: var(--primary);
    font-weight: bold;
}

/* Trust Badges */
.trust {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background-color: rgba(21, 28, 44, 0.3);
    padding: 40px 0;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.trust-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.trust-num {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 2.5rem;
    color: var(--primary);
    line-height: 1.1;
    margin-bottom: 8px;
}

.trust-text {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Section Common */
.section-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 2.25rem;
    text-align: center;
    margin-bottom: 50px;
    color: #ffffff;
}

/* Symptoms Section */
.symptoms {
    padding: 100px 0;
    background-color: var(--bg-dark);
}

.symptoms-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.symptom-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 35px;
    transition: var(--transition);
}

.symptom-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.symptom-card h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.35rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.symptom-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Method Section */
.method {
    padding: 100px 0;
    background-color: rgba(21, 28, 44, 0.4);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.method-container {
    display: flex;
    justify-content: center;
}

.method-content {
    max-width: 800px;
    text-align: center;
}

.method-text {
    text-align: left;
    margin-bottom: 40px;
}

.method-text p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.method-text p strong {
    color: var(--text-main);
}

/* Personal Story */
.story {
    padding: 100px 0;
    position: relative;
}

.story-grid {
    max-width: 800px;
}

.story-tag {
    font-size: 0.8rem;
    color: var(--primary);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 2px;
    display: inline-block;
    margin-bottom: 10px;
}

.story-content h2 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 2.25rem;
    margin-bottom: 24px;
    color: #ffffff;
}

.story-content p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 20px;
}

.link-reviews {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    margin-top: 15px;
    transition: var(--transition);
}

.link-reviews:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Steps Section */
.steps {
    padding: 100px 0;
    background-color: var(--bg-dark);
    border-top: 1px solid var(--border);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.step-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 35px;
    position: relative;
}

.step-num {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 2.5rem;
    color: rgba(16, 185, 129, 0.15);
    position: absolute;
    top: 20px;
    right: 25px;
    line-height: 1;
}

.step-card h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: #ffffff;
    margin-bottom: 16px;
    position: relative;
    z-index: 2;
}

.step-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    position: relative;
    z-index: 2;
}

/* CTA Bottom */
.cta-bottom {
    padding: 100px 0;
    background: linear-gradient(180deg, transparent 0%, rgba(16, 185, 129, 0.05) 100%);
    border-top: 1px solid var(--border);
}

.cta-bottom h2 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #ffffff;
}

.cta-bottom p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Modal Form styling */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(8px);
}

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    margin: 8% auto;
    padding: 40px;
    width: 90%;
    max-width: 550px;
    border-radius: 16px;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    animation: modalOpen 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalOpen {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

.close-btn {
    color: var(--text-muted);
    float: right;
    font-size: 32px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    top: 20px;
    right: 25px;
    transition: var(--transition);
}

.close-btn:hover {
    color: var(--text-main);
}

.modal-content h2 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    margin-bottom: 10px;
}

.modal-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-main);
    font-weight: 500;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    background-color: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.25);
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    background-color: var(--bg-dark);
    padding: 40px 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 20px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--text-main);
}

/* Адаптивность для мобилок */
@media (max-width: 900px) {
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .symptoms-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2.4rem;
    }
}

@media (max-width: 600px) {
    .header-container {
        padding: 0 15px;
    }
    
    .nav {
        display: none; /* скрываем навигацию для компактности */
    }
    
    .hide-mobile {
        display: none;
    }
    
    .hero {
        padding: 120px 0 70px;
    }
    
    .hero-title {
        font-size: 1.85rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .trust-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .section-title {
        font-size: 1.75rem;
        margin-bottom: 30px;
    }
    
    .modal-content {
        padding: 25px 20px;
        margin: 15% auto;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .footer-links a {
        margin: 0 10px;
    }
}