/*
Theme Name: Oshmanovsky - Personal Brand Theme
Theme URI: https://oshmanovsky.ru
Author: AI Developer
Author URI: https://oshmanovsky.ru
Description: Современная тема для персонального сайта эксперта по маркетингу, SEO и разработке. Дизайн 2026 года с glassmorphism, градиентами и микро-анимациями.
Version: 1.1.2
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: oshmanovsky
Domain Path: /languages
Tags: custom-background, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready, blog, portfolio, seo-friendly

This theme is built with modern web standards and optimized for performance.
*/

/* ========================================
   CSS VARIABLES - DESIGN SYSTEM 2026
   ======================================== */
:root {
    /* Colors - Modern Palette 2026 */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #06b6d4;
    --color-accent: #f59e0b;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* Neutral Colors */
    --color-dark: #0f172a;
    --color-dark-secondary: #1e293b;
    --color-gray-900: #111827;
    --color-gray-800: #1f2937;
    --color-gray-700: #374151;
    --color-gray-600: #4b5563;
    --color-gray-500: #6b7280;
    --color-gray-400: #9ca3af;
    --color-gray-300: #d1d5db;
    --color-gray-200: #e5e7eb;
    --color-gray-100: #f3f4f6;
    --color-gray-50: #f9fafb;
    --color-white: #ffffff;
    
    /* Gradients - 2026 Trend */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
    --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #312e81 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    --gradient-mesh: radial-gradient(at 40% 20%, hsla(250,100%,70%,0.15) 0px, transparent 50%),
                      radial-gradient(at 80% 0%, hsla(189,100%,56%,0.15) 0px, transparent 50%),
                      radial-gradient(at 0% 50%, hsla(340,100%,76%,0.15) 0px, transparent 50%),
                      radial-gradient(at 80% 50%, hsla(250,100%,70%,0.15) 0px, transparent 50%),
                      radial-gradient(at 0% 100%, hsla(189,100%,56%,0.15) 0px, transparent 50%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Space Grotesk', var(--font-primary);
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;
    
    /* Line Heights */
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    
    /* Border Radius - 2026: more rounded */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    
    /* Shadows - 2026: softer, more diffuse */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

/* ========================================
   BASE STYLES
   ======================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-gray-700);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

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

a:hover {
    color: var(--color-primary-dark);
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

ul, ol {
    list-style: none;
    padding-left: 0;
}

/* ========================================
   LAYOUT
   ======================================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-narrow {
    max-width: 960px;
}

.container-wide {
    max-width: 1440px;
}

.section {
    padding: var(--space-24) 0;
}

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

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

/* ========================================
   HEADER & NAVIGATION
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.site-header.scrolled {
    background: rgba(15, 23, 42, 0.95);
    box-shadow: var(--shadow-lg);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.site-branding {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.site-logo {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: -0.02em;
}

.site-logo span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Main Navigation - FIXED */
.main-navigation {
    display: block;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    display: block;
    padding: var(--space-2) var(--space-4);
    color: var(--color-gray-300);
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a:focus {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.1);
}

.nav-menu .current-menu-item a,
.nav-menu .current_page_item a {
    color: var(--color-white);
    background: rgba(99, 102, 241, 0.2);
}

/* Mobile Menu Toggle - FIXED */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
}

.menu-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: white;
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
.mobile-navigation {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 400px;
    height: 100vh;
    background: var(--color-dark);
    z-index: var(--z-modal);
    transition: right var(--transition-base);
    overflow-y: auto;
}

.mobile-navigation.active {
    right: 0;
}

.mobile-navigation[aria-hidden="true"] {
    display: none;
}

.mobile-navigation[aria-hidden="false"] {
    display: block;
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-white);
}

.mobile-menu-close {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-lg);
    color: var(--color-white);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.mobile-menu-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.mobile-menu-list {
    padding: var(--space-6);
}

.mobile-menu-list a {
    display: block;
    padding: var(--space-4) 0;
    color: var(--color-gray-300);
    font-size: var(--text-lg);
    font-weight: 500;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: color var(--transition-fast);
}

.mobile-menu-list a:hover {
    color: var(--color-white);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: 600;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    transform: translateX(100%);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-dark);
    border: 2px solid var(--color-gray-200);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--color-gray-700);
}

.btn-ghost:hover {
    background: var(--color-gray-100);
    color: var(--color-dark);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
    border-radius: var(--radius-xl);
}

/* ========================================
   FORMS
   ======================================== */
.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    color: var(--color-gray-900);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.card-glass {
    background: var(--gradient-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card-glass:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(99, 102, 241, 0.3);
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .main-navigation {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .section {
        padding: var(--space-16) 0;
    }
}

@media (max-width: 768px) {
    :root {
        --text-5xl: 2.5rem;
        --text-6xl: 3rem;
        --text-7xl: 3.5rem;
    }
    
    .header-inner {
        height: 64px;
    }
    
    .site-logo {
        font-size: var(--text-lg);
    }
    
    .btn {
        padding: var(--space-3) var(--space-5);
        font-size: var(--text-sm);
    }
    
    .section {
        padding: var(--space-12) 0;
    }
    
    .container {
        padding: 0 var(--space-4);
    }
}

@media (max-width: 480px) {
    :root {
        --text-4xl: 1.875rem;
        --text-5xl: 2.25rem;
    }
    
    .header-actions .btn {
        display: none;
    }
}

/* Print Styles */
@media print {
    .site-header,
    .mobile-navigation,
    .menu-toggle {
        display: none !important;
    }
    
    body {
        color: #000;
        background: #fff;
    }
    
    a {
        text-decoration: underline;
    }
    
    .container {
        max-width: 100%;
    }
}