:root {
    --primary-blue: #007BFF;
    --dark-blue: #0056b3;
    --light-blue: #e7f3ff;
    --white: #FFFFFF;
    --dark-gray: #343a40;
    --light-gray: #f8f9fa;
}

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

body {
    font-family: 'Roboto', 'Arial', sans-serif;
    color: var(--dark-gray);
    background: var(--white);
    transition: background-color 0.5s ease;
    line-height: 1.6;
}

.navbar {
    background: var(--white);
    box-shadow: 0 2px 20px rgba(0,123,255,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    gap: 2rem;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.logo {
    height: 50px;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.1);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
    flex: 1;
    justify-content: center;
    min-width: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    white-space: nowrap;
    padding: 0.5rem 0.3rem;
}

.nav-links a:hover {
    color: var(--primary-blue);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
    margin-left: auto;
    padding-left: 2rem;
}

/* Кнопки */
.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,123,255,0.3);
}

.btn-primary:hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,123,255,0.4);
}

.form-select {
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 0.5rem;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    width: auto;
    min-width: 120px;
}

.form-select:hover {
    border-color: var(--primary-blue);
}

.section {
    padding: 80px 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-blue);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-blue);
    border-radius: 2px;
}

.slider-container {
    position: relative;
    overflow: hidden;
    margin: 2rem 0;
    padding: 0 50px;
}

.slider {
    display: flex;
    transition: transform 0.5s ease;
    gap: 2rem;
    padding: 10px 0;
}

.slide {
    min-width: 300px;
    background: var(--white);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,123,255,0.1);
    transition: transform 0.3s ease;
    border: 2px solid var(--light-blue);
    flex-shrink: 0;
}

.slide:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,123,255,0.2);
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-blue);
    color: var(--white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 100;
    transition: all 0.3s ease;
    border: none;
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.slider-arrow:hover {
    background: var(--dark-blue);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.slider-arrow.prev {
    left: 10px; 
}

.slider-arrow.next {
    right: 10px;
}

@media (max-width: 992px) {
    .slider-container {
        padding: 0 40px;
    }
    
    .slider-arrow {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .slider-arrow.prev {
        left: 5px;
    }
    
    .slider-arrow.next {
        right: 5px;
    }
    
    .slide {
        min-width: 280px;
    }
}

@media (max-width: 768px) {
    .slider-container {
        padding: 0 35px;
    }
    
    .slider-arrow {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .slide {
        min-width: 250px;
        padding: 1.5rem;
    }
}

@media (max-width: 576px) {
    .slider-container {
        padding: 0 30px;
    }
    
    .slider-arrow {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }
    
    .slide {
        min-width: 220px;
        padding: 1rem;
    }
}

.employee-card {
    text-align: center;
    padding: 1.5rem;
}

.employee-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
    border: 4px solid var(--light-blue);
}

.employee-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 0.5rem;
}

.employee-position {
    color: var(--primary-blue);
    font-weight: 500;
}

.advantage-card {
    text-align: center;
    padding: 1.5rem;
}

.advantage-icon {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.advantage-text {
    font-size: 1.1rem;
    font-weight: 500;
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.client-logo {
    height: 80px;
    object-fit: contain;
    filter: grayscale(100%);
    transition: all 0.3s ease;
}

.client-logo:hover {
    filter: grayscale(0%);
    transform: scale(1.1);
}

.footer {
    background: linear-gradient(rgba(0,0,0,0.8), rgba(0,0,0,0.8)), url('../img/footer-bg.jpg') center/cover fixed;
    color: var(--white);
    padding: 4rem 2rem;
    position: relative;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.footer-section h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.footer-section p {
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    max-width: 500px;
    margin: 100px auto;
    position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.close-modal {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2rem;
    cursor: pointer;
    color: var(--dark-gray);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--light-blue);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes confetti {
    0% { 
        transform: translateY(0) rotate(0deg);
        opacity: 1;
    }
    100% { 
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

.section {
    animation: fadeInUp 0.8s ease-out;
}

.logo {
    animation: pulse 2s infinite;
}

.btn-primary {
    animation: pulse 3s infinite;
}

.confetti {
    position: fixed;
    top: 0;
    left: 0;
    width: 10px;
    height: 10px;
    background: var(--primary-blue);
    border-radius: 50%;
    animation: confetti 2s ease-out forwards;
    z-index: 3000;
}

.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.hover-lift {
    transition: transform 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.highlight {
    animation: blink 2s infinite;
    color: var(--primary-blue);
    font-weight: bold;
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--dark-gray);
    cursor: pointer;
    padding: 0;
}

@media (max-width: 1200px) {
    .nav-links {
        gap: 1.5rem;
    }
    
    .nav-actions {
        padding-left: 1.5rem;
    }
}

@media (max-width: 992px) {
    .navbar-container {
        padding: 0 1rem;
        flex-wrap: nowrap;
        gap: 1rem;
    }
    
    .nav-links {
        display: none;
        gap: 1rem;
    }
    
    .navbar-toggle {
        display: block;
        position: absolute;
        right: 20px;
        top: 20px;
    }
    
    .nav-actions {
        margin-left: auto;
        padding-left: 1rem;
        gap: 0.8rem;
    }
    
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        padding: 1rem;
        z-index: 1000;
        gap: 0.5rem;
    }
    
    .slider-arrow {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .slider-arrow.prev {
        left: -20px;
    }
    
    .slider-arrow.next {
        right: -20px;
    }
}

@media (max-width: 768px) {
    .navbar-container {
        gap: 0.5rem;
    }
    
    .nav-actions {
        gap: 0.5rem;
        padding-left: 0.5rem;
    }
    
    .form-select {
        min-width: 100px;
        font-size: 14px;
    }
    
    .btn-primary {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .section {
        padding: 60px 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .modal-content {
        padding: 2rem;
        margin: 50px auto;
    }
}

@media (max-width: 576px) {
    .navbar-container {
        padding: 0.5rem;
        gap: 0.3rem;
        flex-wrap: wrap;
    }
    
    .nav-left {
        gap: 0.5rem;
    }
    
    .logo {
        height: 40px;
    }
    
    .nav-actions {
        flex-direction: row;
        gap: 0.3rem;
        padding-left: 0.3rem;
    }
    
    .form-select {
        min-width: 80px;
        font-size: 12px;
        padding: 0.3rem;
    }
    
    .btn-primary {
        padding: 8px 16px;
        font-size: 12px;
    }
    
    .section {
        padding: 40px 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .slide {
        min-width: 250px;
        padding: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

[class*="night-mode-"] .navbar {
    background: inherit !important;
}

[class*="night-mode-"] .nav-links a {
    color: inherit !important;
}

[class*="night-mode-"] .navbar-toggle {
    color: inherit !important;
}

[class*="night-mode-"] .form-select {
    background: #2a2a2a;
    border-color: #3a3a3a;
    color: #ffffff;
}

[class*="night-mode-"] .form-select:hover {
    border-color: #007BFF;
}

body, .navbar, .slide, .form-group input, .footer {
    transition: all 0.5s ease;
}

@media (max-width: 768px) {
    .slider-container {
        position: relative;
        padding: 0 15px !important;
        margin: 0 -15px;
        width: calc(100% + 30px);
    }
    
    .slider-arrow {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        z-index: 100;
        background: var(--primary-blue);
        color: white;
        border: none;
        border-radius: 50%;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    }
    
    .slider-arrow.prev {
        left: 5px !important;
    }
    
    .slider-arrow.next {
        right: 5px !important;
    }

    .slider-arrow:not([style*="pointer-events: none"]) {
        opacity: 1 !important;
        pointer-events: auto !important;
        cursor: pointer !important;
    }

    .slider-arrow::before {
        content: '';
        position: absolute;
        top: -10px;
        left: -10px;
        right: -10px;
        bottom: -10px;
    }
}

@media (max-width: 480px) {
    .slider-container {
        padding: 0 10px !important;
        margin: 0 -10px;
        width: calc(100% + 20px);
    }
    
    .slider-arrow {
        width: 35px;
        height: 35px;
        font-size: 16px;
    }
    
    .slider-arrow.prev {
        left: 2px !important;
    }
    
    .slider-arrow.next {
        right: 2px !important;
    }
}

.slider-arrow {
    z-index: 1000 !important;
}

[class*="night-mode-"] .slider-arrow {
    background: #007BFF !important;
    color: white !important;
    box-shadow: 0 2px 10px rgba(0,123,255,0.4) !important;
}

[class*="night-mode-"] .slider-arrow:disabled {
    background: #555 !important;
    opacity: 0.5 !important;
}