/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.container-narrow {
    max-width: 900px;
}

.container-wide {
    max-width: 1900px;
}

/* ============================================
   HEADER - Компактный и адаптивный
   ============================================ */

.site-header {
    background: linear-gradient(135deg, #f0f7fc 0%, #e8e6ff 50%, #fff3e0 100%);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 8px 32px rgba(74, 144, 226, 0.16);
    border-radius: var(--radius-2xl);
    border: 2px solid var(--color-primary-light);
    margin: var(--spacing-sm) auto;
    max-width: calc(var(--container-width) + 10rem);
}

.header-inner {
    padding: 0;
    border-radius: var(--radius-2xl);
}

.site-header .container {
    max-width: 1900px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    gap: 1.5rem;
}

/* Site Branding */
.site-branding {
    flex-shrink: 0;
}

.site-branding h1 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    font-family: var(--font-accent);
    white-space: nowrap;
}

.site-branding a {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.logo-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.site-branding a:hover {
    opacity: 0.8;
}

/* Navigation */
.main-navigation {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    justify-content: flex-end;
}

.main-menu {
    list-style: none;
    display: flex;
    gap: 0.25rem;
    margin: 0;
    padding: 0;
}

.main-menu li {
    margin: 0;
}

.main-menu a {
    color: var(--color-dark);
    font-weight: 500;
    padding: 0.5rem 0.875rem;
    position: relative;
    transition: var(--transition-fast);
    font-family: var(--font-accent);
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    white-space: nowrap;
}

.main-menu a:hover,
.main-menu a.active {
    color: var(--color-primary);
    background: var(--color-primary-soft);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: var(--color-white);
    border: 2px solid var(--color-primary-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    padding: 0.75rem;
    transition: var(--transition-base);
}

.menu-toggle:hover {
    background: var(--color-primary-soft);
    border-color: var(--color-primary);
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 2.5px;
    background: var(--color-primary);
    margin: 5px 0;
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

/* Header CTA Button */
.header-cta {
    margin-left: var(--spacing-sm);
}

.header-cta .btn {
    padding: 0.75rem 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* ============================================
   FOOTER - Мягкий и закругленный
   ============================================ */

.site-footer {
    background: linear-gradient(135deg, #263238 0%, #1a1f24 100%);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-3xl);
    position: relative;
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 5%;
    right: 5%;
    height: 6px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-column {
    background: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-column h3,
.footer-column h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-accent);
}

.footer-column p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-white);
}

.footer-menu {
    list-style: none;
    padding: 0;
}

.footer-menu li {
    margin-bottom: var(--spacing-sm);
}

.footer-menu a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.footer-menu a:hover {
    padding-left: 0.5rem;
    color: var(--color-primary-light);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    font-size: 1.25rem;
    transition: var(--transition-bounce);
    border: 2px solid transparent;
}

.social-link:hover {
    background: var(--gradient-primary);
    transform: translateY(-5px) rotate(5deg);
    border-color: var(--color-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    text-align: center;
    border-radius: var(--radius-lg);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin: 0 0 var(--spacing-md) 0;
    font-size: 0.9375rem;
}

.footer-legal-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    font-size: 0.875rem;
}

.footer-legal-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition-fast);
    border-bottom: 1px solid transparent;
}

.footer-legal-links a:hover {
    color: var(--color-white);
    border-bottom-color: var(--color-white);
}

.footer-legal-links span {
    color: rgba(255, 255, 255, 0.3);
}

/* ============================================
   SECTIONS
   ============================================ */

section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

section.section-sm {
    padding: var(--spacing-2xl) 0;
}

section.section-lg {
    padding: 4rem 0 var(--spacing-3xl);
}

section .container {
    position: relative;
    z-index: 1;
}

/* ============================================
   GRID SYSTEM
   ============================================ */

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
}

/* ============================================
   MOBILE MENU ANIMATION
   ============================================ */

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 968px) {
    /* Header Responsive */
    .site-branding h1 {
        font-size: 1.0625rem;
    }

    .logo-icon {
        font-size: 1.1875rem;
    }

    .main-menu a {
        font-size: 0.875rem;
        padding: 0.5rem 0.75rem;
    }

    .main-navigation {
        position: fixed;
        top: 70px;
        left: 1rem;
        right: 1rem;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        transform: translateY(-20px);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-base);
        border-radius: var(--radius-2xl);
        border: 2px solid var(--color-primary-light);
    }

    .main-navigation.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .main-menu {
        flex-direction: column;
        gap: var(--spacing-sm);
        width: 100%;
    }

    .main-menu a {
        display: block;
        padding: 0.75rem 1rem;
        width: 100%;
        text-align: center;
        font-size: 0.9375rem;
    }

    .menu-toggle {
        display: block;
    }

    .header-cta {
        margin-left: 0;
        width: 100%;
    }

    .header-cta .btn {
        width: 100%;
        justify-content: center;
        padding: 0.75rem 1.5rem;
        font-size: 0.9375rem;
    }

    /* Footer Responsive */
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-about {
        grid-column: 1 / -1;
    }

    /* Sections */
    section {
        padding: var(--spacing-xl) 0;
    }
}

@media (max-width: 768px) {
    .site-branding h1 {
        font-size: 1rem;
    }

    .logo-icon {
        font-size: 1.125rem;
    }
}

@media (max-width: 640px) {
    .site-branding h1 {
        font-size: 0.9375rem;
    }

    .logo-icon {
        font-size: 1.0625rem;
    }

    /* Footer Mobile */
    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-column {
        text-align: center;
    }

    .footer-menu {
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }
}

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

    .header-content {
        padding: 0.625rem 0;
        gap: 1rem;
    }

    .site-branding h1 {
        font-size: 0.875rem;
    }

    .site-branding a {
        gap: 0.3125rem;
    }

    .logo-icon {
        font-size: 1rem;
    }

    .header-cta .btn {
        padding: 0.625rem 1.125rem;
        font-size: 0.875rem;
    }

    .grid {
        gap: var(--spacing-md);
    }

    section {
        padding: var(--spacing-lg) 0;
    }

    .footer-column {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 375px) {
    .container {
        padding: 0 0.75rem;
    }

    .header-content {
        padding: 0.5rem 0;
        gap: 0.75rem;
    }

    .site-branding h1 {
        font-size: 0.8125rem;
    }

    .site-branding a {
        gap: 0.25rem;
    }

    .logo-icon {
        font-size: 0.9375rem;
    }

    .header-cta .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8125rem;
    }

    .grid {
        gap: var(--spacing-sm);
    }
}
/* ============================================
   HEADER BUTTON STYLES
   ============================================ */

.header-cta .btn {
    background: var(--gradient-primary);
    color: var(--color-white);
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.25);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.header-cta .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.35);
    border-color: rgba(255, 255, 255, 0.4);
}

.header-cta .btn svg {
    transition: var(--transition-base);
}

.header-cta .btn:hover svg {
    transform: translateY(2px);
}
@media (max-width: 360px) {
    .site-branding h1 {
        font-size: 0.75rem;
    }

    .logo-icon {
        font-size: 0.875rem;
    }

    .header-content {
        padding: 0.5rem 0;
        gap: 0.625rem;
    }

    .site-branding a {
        gap: 0.1875rem;
    }

    .menu-toggle {
        padding: 0.5rem;
    }

    .menu-toggle span {
        width: 18px;
    }
}

@media (max-width: 320px) {
    .site-branding h1 {
        font-size: 0.6875rem;
    }

    .logo-icon {
        font-size: 0.8125rem;
    }

    .header-content {
        padding: 0.375rem 0;
        gap: 0.5rem;
    }

    .site-branding a {
        gap: 0.1875rem;
    }
}