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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #F8F9FA;
    color: #333333;
    line-height: 1.5;
    font-size: 16px;
}

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

/* Header */
.header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    flex-wrap: wrap;
    gap: 15px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo-icon {
    width: 40px;
    height: 40px;
    background: #0066CC;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}
.logo-text {
    font-size: 20px;
    font-weight: bold;
    color: #0066CC;
}
.logo-text span {
    color: #333;
    font-weight: normal;
    font-size: 14px;
}

/* Navigation */
.nav ul {
    display: flex;
    list-style: none;
    gap: 25px;
}
.nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}
.nav a:hover, .nav a.active {
    color: #0066CC;
}
.admin-link {
    background: #0066CC;
    color: white !important;
    padding: 8px 15px;
    border-radius: 50px;
}
.admin-link:hover {
    background: #0052a3;
}
.mobile-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

.header-phone {
    font-size: 20px;
    font-weight: bold;
    color: #0066CC;
    text-decoration: none;
}
.header-phone small {
    font-size: 11px;
    color: #666;
    display: block;
    font-weight: normal;
}
.header-phone i {
    margin-right: 8px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
    text-decoration: none;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-primary {
    background: #0066CC;
    color: white;
}
.btn-primary:hover {
    background: #0052a3;
    transform: translateY(-2px);
}
.btn-secondary {
    background: white;
    color: #0066CC;
    border: 2px solid #0066CC;
}
.btn-secondary:hover {
    background: #0066CC;
    color: white;
}
.btn-success {
    background: #28A745;
    color: white;
}
.btn-block {
    width: 100%;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, #0066CC 0%, #004999 100%);
    color: white;
    padding: 60px 0;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}
.hero-title {
    font-size: 42px;
    line-height: 1.2;
    margin-bottom: 20px;
}
.hero-subtitle {
    font-size: 20px;
    margin-bottom: 30px;
}
.hero-features {
    list-style: none;
    margin-bottom: 30px;
}
.hero-features li {
    margin-bottom: 12px;
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.hero-features li i {
    color: #28A745;
}
.hero-form {
    background: white;
    padding: 30px;
    border-radius: 20px;
    color: #333;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}
.hero-form h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: #0066CC;
}
.hero-form h3 i {
    margin-right: 10px;
}
.form-group {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    background: #f5f5f5;
    border-radius: 50px;
    padding: 0 15px;
}
.form-group i {
    color: #999;
    margin-right: 10px;
}
.form-group input {
    width: 100%;
    padding: 14px 0;
    font-size: 16px;
    border: none;
    background: transparent;
    outline: none;
}
.form-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 15px 0;
    font-size: 12px;
}
.success-message {
    background: #28A745;
    color: white;
    padding: 12px;
    border-radius: 10px;
    text-align: center;
    margin-top: 15px;
    display: none;
}

/* Section */
.section {
    padding: 60px 0;
}
.section-title {
    font-size: 36px;
    text-align: center;
    margin-bottom: 15px;
}
.section-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
}

/* Calculator */
.calculator {
    background: white;
    border-radius: 20px;
    padding: 30px;
    max-width: 600px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}
.calc-field {
    margin-bottom: 20px;
}
.calc-field label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}
.calc-field select, .calc-field input[type="number"] {
    width: 100%;
    padding: 12px;
    border-radius: 50px;
    border: 1px solid #ddd;
}
input[type="range"] {
    width: 100%;
}
.calc-result {
    background: #E8F0FE;
    padding: 15px;
    border-radius: 15px;
    text-align: center;
    margin: 20px 0;
}
.calc-result h4 {
    color: #0066CC;
}

/* Steps */
.steps-section {
    background: white;
}
.steps-grid, .advantages-grid, .reviews-grid, .blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}
.step-card, .adv-card {
    text-align: center;
    background: white;
    padding: 30px 20px;
    border-radius: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}
.step-card:hover, .adv-card:hover {
    transform: translateY(-5px);
}
.step-number {
    width: 70px;
    height: 70px;
    background: #0066CC;
    color: white;
    font-size: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}
.adv-card i {
    font-size: 48px;
    color: #0066CC;
    margin-bottom: 15px;
}
.review-card, .blog-card {
    background: white;
    padding: 25px;
    border-radius: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}
.review-stars i {
    color: #FFC107;
    margin-right: 3px;
}
.review-text {
    font-style: italic;
    margin: 15px 0;
}
.review-author {
    font-weight: bold;
    color: #0066CC;
}
.blog-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}
.read-more {
    color: #0066CC;
    text-decoration: none;
    display: inline-block;
    margin-top: 10px;
}

/* Footer form */
.footer-form {
    background: #0066CC;
    color: white;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    margin-bottom: 40px;
}
.footer-form .form-group {
    background: white;
    max-width: 400px;
    margin: 15px auto;
}
.footer-form .btn-success {
    background: #28A745;
    max-width: 400px;
    margin: 0 auto;
}

/* Footer */
.footer {
    background: #1a1a2e;
    color: #aaa;
    padding: 40px 0 20px;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}
.footer-col h4 {
    color: white;
    margin-bottom: 15px;
}
.footer-col a {
    color: #aaa;
    text-decoration: none;
    display: block;
    margin-bottom: 8px;
}
.footer-col a i {
    margin-right: 8px;
    width: 20px;
}
.footer-col a:hover {
    color: #0066CC;
}
.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
    font-size: 12px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }
    .hero-title {
        font-size: 32px;
    }
    .section-title {
        font-size: 28px;
    }
    .nav ul {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }
    .nav ul.active {
        display: flex;
    }
    .mobile-toggle {
        display: block;
    }
    .header-inner {
        flex-direction: column;
        text-align: center;
    }
}

/* About page */
.about-content {
    background: white;
    padding: 40px;
    border-radius: 20px;
    margin: 40px 0;
}
.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin: 30px 0;
}
.stat-card {
    text-align: center;
    padding: 20px;
    background: #F0F4F8;
    border-radius: 15px;
}
.stat-number {
    font-size: 32px;
    font-weight: bold;
    color: #0066CC;
}

/* Contacts */
.contacts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin: 40px 0;
}
.contact-info {
    background: white;
    padding: 30px;
    border-radius: 20px;
}
.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
    padding: 15px;
    background: #F8F9FA;
    border-radius: 15px;
}
.contact-item i {
    width: 40px;
    height: 40px;
    background: #0066CC;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}
.contact-map {
    background: white;
    padding: 30px;
    border-radius: 20px;
}
.map-placeholder {
    background: #e0e0e0;
    height: 300px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}
@media (max-width: 768px) {
    .contacts-grid {
        grid-template-columns: 1fr;
    }
}

/* Blog page */
.blog-header {
    background: linear-gradient(135deg, #0066CC, #004999);
    color: white;
    padding: 60px 0;
    text-align: center;
}
.blog-list {
    padding: 40px 0;
}
.blog-post-card {
    display: flex;
    gap: 20px;
    background: white;
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 30px;
    padding: 20px;
}
.blog-post-icon {
    font-size: 60px;
    color: #0066CC;
}
@media (max-width: 768px) {
    .blog-post-card {
        flex-direction: column;
        text-align: center;
    }
}