/**
 * Первый Вагон — Layout
 * Header, Footer, Navigation, Sidebar
 */

/* ========================================
   GLOBAL BACKGROUND ANIMATION (Deep Aurora)
   ======================================== */
html {
    background-color: transparent !important;
    scroll-behavior: smooth;
}

body {
    background-color: transparent !important;
    position: relative;
    overflow-x: hidden;
    min-height: 100vh;
}

/*
   "Wallpaper" Layer
   Z-Index 0: Sits behind content (z-index 1+) but on top of canvas
*/
.ambient-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
    background-color: var(--bg-primary);
    /* The Black Canvas */
}

/* Content Layering - Ensure everything sits ON TOP of the wallpaper */
.header,
.footer,
main,
.hero,
section {
    position: relative;
    z-index: 1;
}

.header {
    z-index: 100;
    /* Header always top */
}

/*
   DEEP AURORA ANIMATION
   Colors: Indigo / Blue for premium "Night Mode" feel
   Blur: Ultra-soft (150px)
*/

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.5;
    /* Rich color visibility */
    animation: floatAurora 25s infinite alternate ease-in-out;
    mix-blend-mode: screen;
    /* Glowing effect */
}

/* Orb 1: Deep Indigo (Top Left) */
.orb-1 {
    top: -15%;
    left: -15%;
    width: 80vw;
    height: 80vw;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.4) 0%, transparent 70%);
}

/* Orb 2: Royal Blue (Bottom Right) */
.orb-2 {
    bottom: -15%;
    right: -15%;
    width: 90vw;
    height: 90vw;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, transparent 70%);
    animation-delay: -8s;
}

@keyframes floatAurora {
    0% {
        transform: translate(0, 0) scale(1);
    }

    50% {
        transform: translate(30px, 50px) scale(1.1);
    }

    100% {
        transform: translate(0, 0) scale(1);
    }
}

/* Ensure no sections block the view (Fixing "Strips") */
section,
.section,
.hero {
    background-color: transparent !important;
}

/* ========================================
   HEADER
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding: var(--spacing-4) 0;
    transition: all var(--transition-base);
    background-color: transparent;
    /* Prevent white line flash on scroll */
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    transform: translateZ(0);
}

.header.scrolled {
    background-color: rgba(10, 10, 11, 0.2);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

/* Extend header background to cover any rendering gaps */
.header.scrolled::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to bottom, rgba(10, 10, 11, 0.2), transparent);
    pointer-events: none;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--brand-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.nav-link {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.nav-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-card);
}

.nav-link.active {
    color: var(--text-primary);
    position: relative;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--brand-primary);
    border-radius: 1px;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

/* Mobile menu button */
.mobile-menu-btn {
    display: none;
    padding: var(--spacing-2);
    color: var(--text-secondary);
}

.mobile-menu-btn:hover {
    color: var(--text-primary);
}

/* Hamburger icon */
.hamburger {
    width: 24px;
    height: 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: currentColor;
    border-radius: 1px;
    transition: all var(--transition-base);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-primary);
    z-index: var(--z-modal);
    padding: var(--spacing-20) var(--spacing-6);
    flex-direction: column;
    gap: var(--spacing-2);
    align-items: center;
    /* Center items horizontally */
    text-align: center;
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav-link {
    padding: var(--spacing-4);
    font-size: var(--text-xl);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.mobile-nav-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.mobile-nav-close {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    padding: var(--spacing-3);
    color: var(--text-secondary);
    font-size: var(--text-2xl);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background-color: transparent !important;
    border: none !important;
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-inner {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-12);
    margin-bottom: var(--spacing-12);
}

.footer-brand {
    max-width: 280px;
}

.footer-brand-description {
    margin-top: var(--spacing-4);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
}

.footer-column-title {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.footer-link {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: color var(--transition-base);
}

.footer-link:hover {
    color: var(--text-primary);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--border-subtle);
}

.footer-copyright {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.footer-socials {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.footer-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.footer-social-link:hover {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
}

/* ========================================
   SIDEBAR (Dashboard)
   ======================================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 260px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-subtle);
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    z-index: var(--z-sticky);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: var(--spacing-6);
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    overflow-y: auto;
}

.sidebar-section {
    margin-bottom: var(--spacing-6);
}

.sidebar-section-title {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: var(--spacing-2) var(--spacing-3);
    margin-bottom: var(--spacing-1);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.sidebar-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-card);
}

.sidebar-link.active {
    color: var(--text-primary);
    background-color: var(--bg-card);
}

.sidebar-link-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.sidebar-link-badge {
    margin-left: auto;
    padding: 2px 8px;
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    background-color: var(--brand-primary);
    color: var(--text-primary);
    border-radius: var(--radius-full);
}

.sidebar-footer {
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-subtle);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-base);
}

.sidebar-user:hover {
    background-color: var(--bg-card);
}

.sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user-name {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-plan {
    font-size: var(--text-xs);
    color: var(--text-muted);
}

/* ========================================
   MAIN CONTENT AREA
   ======================================== */
.main-content {
    min-height: 100vh;
}

/* With sidebar */
.main-content.with-sidebar {
    margin-left: 260px;
    padding: var(--spacing-8);
}

/* Page header */
.page-header {
    margin-bottom: var(--spacing-8);
}

.page-title {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
}

.page-description {
    margin-top: var(--spacing-2);
    color: var(--text-secondary);
    font-size: var(--text-base);
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-4);
}

.breadcrumb-separator {
    color: var(--text-disabled);
}

.breadcrumb-link {
    color: var(--text-secondary);
}

.breadcrumb-link:hover {
    color: var(--text-primary);
}

.breadcrumb-current {
    color: var(--text-primary);
}

/* ========================================
   SECTIONS
   ======================================== */
.section {
    padding: var(--spacing-24) 0;
}

.section-sm {
    padding: var(--spacing-16) 0;
}

.section-lg {
    padding: var(--spacing-32) 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-16);
}

.section-eyebrow {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--brand-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-4);
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    margin-bottom: var(--spacing-4);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-8);
    }

    .footer-brand {
        grid-column: span 2;
        max-width: none;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content.with-sidebar {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    .header-inner {
        padding: 0 var(--spacing-4);
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-brand {
        grid-column: span 1;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-4);
        text-align: center;
    }

    .section {
        padding: var(--spacing-16) 0;
    }

    .section-title {
        font-size: var(--text-3xl);
    }
}