/* ===================================
   Военторг - Apple Style 2025
   Цветовая палитра: хаки, черный, белый, серый
   =================================== */

/* CSS Variables */
:root {
    /* Colors - Khaki Palette */
    --color-primary: #5a6b3f;        /* Основной хаки */
    --color-primary-dark: #3d4729;   /* Темный хаки */
    --color-primary-light: #8a9a6d;  /* Светлый хаки */
    --color-accent: #4a7c59;         /* Холодный зеленый акцент */
    
    /* Neutrals */
    --color-black: #1d1d1f;
    --color-gray-dark: #424245;
    --color-gray: #86868b;
    --color-gray-light: #d2d2d7;
    --color-white: #ffffff;
    --color-bg: #f5f5f7;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing - Улучшенные отступы */
    --spacing-xs: 0.5rem;     /* 8px */
    --spacing-sm: 0.75rem;    /* 12px */
    --spacing-md: 1rem;       /* 16px */
    --spacing-lg: 1.5rem;     /* 24px */
    --spacing-xl: 2rem;       /* 32px */
    --spacing-2xl: 3rem;      /* 48px */
    --spacing-3xl: 4rem;      /* 64px */
    --spacing-4xl: 6rem;      /* 96px */
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    
    /* Transitions - Все плавные */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
    
    /* Z-index */
    --z-header: 1000;
    --z-mega-menu: 999;
    --z-search: 998;
    --z-modal: 1100;
}

/* Tablet adjustments */
@media (max-width: 1024px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 3rem;
        --spacing-4xl: 4rem;
    }
}

/* Mobile adjustments */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.25rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
        --spacing-4xl: 3rem;
    }
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-black);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul {
    list-style: none;
}

/* ===================================
   Header
   =================================== */
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-gray-light);
}

.header-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

/* Logo */
.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.8;
}

.logo-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.main-nav {
    flex: 1;
    margin: 0 var(--spacing-lg);
}

.nav-list {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-black);
    white-space: nowrap;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

/* Mega Menu */
.mega-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: max-content;
    min-width: 500px;
    max-width: 800px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-10px);
    transition: all var(--transition-normal);
    z-index: var(--z-mega-menu);
    margin-top: var(--spacing-sm);
}

@media (hover: hover) and (pointer: fine) {
    .nav-item:hover .mega-menu {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(0);
    }
}

.mega-menu-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.mega-menu-column {
    min-width: 200px;
}

.mega-menu-title {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    text-decoration: none;
    transition: color 0.2s;
}

.mega-menu-title:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

.mega-menu-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.mega-menu-list a {
    font-size: 0.875rem;
    color: var(--color-gray-dark);
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.mega-menu-list a:hover {
    background: var(--color-bg);
    color: var(--color-primary);
    padding-left: calc(var(--spacing-xs) + 4px);
}

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

.search-toggle,
.contact-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-dark);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.search-toggle:hover,
.contact-link:hover {
    background: var(--color-bg);
    color: var(--color-primary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-black);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* Search Panel */
.search-panel {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-light);
    padding: var(--spacing-lg) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: var(--z-search);
}

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

.search-panel-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.search-input {
    flex: 1;
    padding: var(--spacing-md);
    font-size: 1.125rem;
    border: 2px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast);
}

.search-input:focus {
    border-color: var(--color-primary);
}

.search-close {
    padding: var(--spacing-sm);
    color: var(--color-gray);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.search-close:hover {
    background: var(--color-bg);
    color: var(--color-black);
}

/* ===================================
   Main Content
   =================================== */
.main-content {
    min-height: 60vh;
}

/* Container */
.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Section */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-dark);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

/* ===================================
   Cards
   =================================== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    background: var(--color-bg);
}

.card-content {
    padding: var(--spacing-md);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.card-text {
    color: var(--color-gray-dark);
    font-size: 0.875rem;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: scale(1.02);
}

.btn-secondary {
    background: var(--color-gray-light);
    color: var(--color-black);
}

.btn-secondary:hover {
    background: var(--color-gray);
    color: var(--color-white);
}

.btn-outline {
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--color-black);
    color: var(--color-gray-light);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-text {
    font-size: 0.875rem;
    line-height: 1.6;
}

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

.footer-list a {
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-list a:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-dark);
    text-align: center;
    font-size: 0.875rem;
}

/* ===================================
   Responsive - Mobile First
   =================================== */
@media (max-width: 1024px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-list {
        flex-direction: column;
    }
    
    .mega-menu {
        position: static;
        transform: none;
        width: 100%;
    }
}

@media (max-width: 768px) {
    .header-container {
        height: 64px;
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .footer-columns {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* ===================================
   Utilities
   =================================== */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.bg-gray { background: var(--color-bg); }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

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

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}