/* Header & Navigation Components — ОбрГарант */
.header-main {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(253, 251, 247, 0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--surface-border);
    box-shadow: 0 4px 18px rgba(74, 18, 32, 0.05);
    height: 76px;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--primary);
    font-family: var(--font-heading);
    font-size: 23px;
    font-weight: 700;
    flex-shrink: 0;
    letter-spacing: -0.01em;
}

.header-logo svg {
    width: 34px;
    height: 34px;
    fill: var(--primary);
}

/* Desktop Nav */
.desktop-nav {
    display: none;
}

@media (min-width: 1024px) {
    .desktop-nav {
        display: flex;
        gap: 24px;
        align-items: center;
    }
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    color: var(--body);
    font-size: 14.5px;
    font-weight: 600;
    transition: color 0.2s;
    white-space: nowrap;
    position: relative;
    padding: 4px 0;
}

.nav-item:hover {
    color: var(--primary);
}

.nav-item svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

.btn-sm {
    min-height: 44px;
    height: 44px;
    padding: 0 22px;
    font-size: 14px;
}

.burger-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: transparent;
    border: 1px solid var(--surface-border);
    border-radius: var(--rounded-xs);
    cursor: pointer;
    color: var(--primary);
}

@media (min-width: 1024px) {
    .burger-btn {
        display: none;
    }
}

/* Mobile Nav Drawer */
.mobile-nav-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(30, 20, 24, 0.55);
    backdrop-filter: blur(4px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-drawer {
    position: fixed;
    top: 0; left: -310px;
    width: 310px;
    height: 100dvh;
    background: var(--canvas);
    border-right: 1px solid var(--surface-border);
    z-index: 1001;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    padding: var(--spacing-xl);
    box-sizing: border-box;
    overflow-y: auto;
}

.mobile-nav-overlay.active .mobile-nav-drawer {
    transform: translateX(310px);
}

.mobile-nav-close {
    align-self: flex-end;
    width: 40px; height: 40px;
    background: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: 50%;
    font-size: 20px; cursor: pointer;
    color: var(--ink);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(30, 20, 24, 0.65);
    backdrop-filter: blur(5px);
    z-index: 2000;
    opacity: 0; visibility: hidden;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal-overlay.active {
    opacity: 1; visibility: visible;
}

.modal-content {
    background: #FFFFFF;
    border: 1px solid var(--surface-border);
    border-radius: var(--rounded-md);
    padding: var(--spacing-xl);
    width: 100%;
    max-width: 440px;
    position: relative;
    transform: translateY(20px);
    transition: var(--transition);
    max-height: 90dvh;
    overflow-y: auto;
    box-shadow: 0 24px 48px rgba(30, 20, 24, 0.24);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px; right: 16px;
    width: 34px; height: 34px;
    border: 1px solid var(--surface-border);
    background: var(--surface);
    border-radius: 50%;
    cursor: pointer; display: flex;
    align-items: center; justify-content: center;
    transition: background 0.2s;
}

.modal-close:hover { background: #E5DEC9; }

.modal-tabs {
    display: flex;
    gap: 6px;
    background: var(--surface);
    padding: 5px;
    border-radius: var(--rounded-sm);
    margin-bottom: var(--spacing-lg);
}

.modal-tab {
    flex: 1;
    border: none; background: transparent;
    padding: 9px; font-family: var(--font-body);
    font-size: 14px; font-weight: 600;
    cursor: pointer; border-radius: var(--rounded-xs);
    color: var(--hairline); transition: var(--transition);
}

.modal-tab.active {
    background: #FFFFFF; color: var(--primary);
    box-shadow: 0 2px 8px rgba(74, 18, 32, 0.08);
}

.messenger-select { display: none; }
.messenger-select.active { display: block; }

/* Footer */
.footer-main {
    background: linear-gradient(160deg, #4A1220 0%, #2E0A13 100%);
    color: var(--canvas);
    padding: var(--spacing-xxxl) 0 var(--spacing-xl) 0;
    margin-top: auto;
    border-top: 3px solid var(--accent-1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 768px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1024px) {
    .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.2fr; }
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 25px;
    font-weight: 700;
    color: var(--canvas);
    text-decoration: none;
    margin-bottom: var(--spacing-sm);
}

.footer-logo svg { fill: var(--accent-1); width: 34px; height: 34px; }
.footer-desc { color: rgba(253, 251, 247, 0.72); font-size: 14px; line-height: 1.55; margin-bottom: var(--spacing-lg); }
.footer-title { color: var(--accent-1); font-size: 17px; font-family: var(--font-heading); font-weight: 600; margin-bottom: var(--spacing-md); letter-spacing: 0.02em; }
.footer-link {
    display: block; color: rgba(253, 251, 247, 0.82);
    text-decoration: none; font-size: 14px;
    margin-bottom: var(--spacing-sm); transition: color 0.2s;
}
.footer-link:hover { color: var(--accent-1); }

.footer-bottom {
    margin-top: var(--spacing-xxl); padding-top: var(--spacing-md);
    border-top: 1px solid rgba(253, 251, 247, 0.12);
    display: flex; flex-direction: column; gap: var(--spacing-sm);
    font-size: 12.5px; color: rgba(253, 251, 247, 0.55);
}

@media (min-width: 768px) {
    .footer-bottom { flex-direction: row; justify-content: space-between; }
}

/* FLOATING CALLBACK BUTTON */
.floating-callback-btn {
    position: fixed;
    bottom: 26px;
    right: 26px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--canvas);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(107, 29, 47, 0.4);
    cursor: pointer;
    border: 2px solid var(--accent-1);
    z-index: 900;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.floating-callback-btn:hover {
    transform: translateY(-4px) scale(1.06);
    box-shadow: 0 12px 28px rgba(107, 29, 47, 0.55);
    color: var(--canvas);
}

.floating-callback-btn svg {
    width: 26px;
    height: 26px;
    fill: currentColor;
    animation: pulseIcon 2.4s infinite;
}

@keyframes pulseIcon {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

@media (max-width: 768px) {
    .floating-callback-btn {
        bottom: 18px;
        right: 18px;
        width: 52px;
        height: 52px;
    }
    .floating-callback-btn svg {
        width: 22px;
        height: 22px;
    }
}

.header-call-btn {
    display: none;
}

@media (min-width: 1024px) {
    .header-call-btn {
        display: inline-flex;
    }
}