/* ===== CSS Variables ===== */
:root {
    color-scheme: light dark;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Colors */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #64748b;
    --color-warning: #f59e0b;
    --color-success: #10b981;
    --color-error: #ef4444;
    
    --color-dark: #0f172a;
    --color-dark-light: #1e293b;
    --color-light: #f8fafc;
    --color-light-dark: #e2e8f0;
    
    --color-text: #0f172a;
    --color-text-light: #64748b;
    --color-text-on-dark: #f1f5f9;
    
    /* Typography */
    --font-base: 16px;
    --font-scale: 1.25;
    
    --font-sm: clamp(0.8rem, 0.17vi + 0.76rem, 0.89rem);
    --font-base: clamp(1rem, 0.34vi + 0.91rem, 1.19rem);
    --font-md: clamp(1.25rem, 0.61vi + 1.1rem, 1.58rem);
    --font-lg: clamp(1.56rem, 1vi + 1.31rem, 2.11rem);
    --font-xl: clamp(1.95rem, 1.56vi + 1.56rem, 2.81rem);
    --font-2xl: clamp(2.44rem, 2.38vi + 1.85rem, 3.75rem);
    
    /* Borders */
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.1), 0 8px 10px -6px rgba(0,0,0,.1);
    
    /* Transitions */
    --transition: all 0.2s ease;
    --transition-slow: all 0.3s ease;
}

/* ===== Base Reset & Typography ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    font-size: var(--font-base);
    line-height: 1.6;
    background: var(--color-light);
    color: var(--color-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Page Layout ===== */
.page {
    min-height: 100vh; /* Fallback */
    min-height: 100svh; /* Small viewport */
    min-height: 100dvh; /* Dynamic viewport */
    display: flex;
    flex-direction: column;
}

main { 
    flex: 1; 
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding-inline: clamp(var(--space-md), calc(.5rem + 1vw), var(--space-xl));
}

/* ===== Skip Link ===== */
.skip-link {
    position: absolute;
    inset-inline-start: var(--space-md);
    inset-block-start: -100%;
    z-index: 10000;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-dark);
    color: var(--color-text-on-dark);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.skip-link:focus,
.skip-link:focus-visible { 
    inset-block-start: var(--space-md);
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* ===== Focus Management ===== */
:focus-visible { 
    outline: 3px solid var(--color-primary); 
    outline-offset: 2px; 
}

a, button, input, textarea, select { 
    outline-offset: 2px; 
}

/* Touch targets for mobile */
@media (pointer: coarse) {
    a, button, .nav-link { 
        min-height: 44px; 
        min-width: 44px;
        padding: var(--space-sm) var(--space-md); 
    }
}

/* ===== Utility Classes ===== */
.visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

/* ===== Header ===== */
.header {
    background: var(--color-dark);
    color: var(--color-text-on-dark);
    padding: var(--space-lg) 0;
    border-bottom: 2px solid var(--color-warning);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
}

.logo {
    height: 40px;
    width: auto;
    border-radius: var(--border-radius);
}

.site-title {
    font-size: clamp(1.25rem, 4vw, 1.5rem);
    font-weight: 700;
    margin: 0;
}

/* ===== Navigation ===== */
.nav {
    position: sticky;
    top: 0;
    background: var(--color-dark-light);
    z-index: 100;
    isolation: isolate;
    box-shadow: var(--shadow-sm);
    
    /* Safe areas для вырезов */
    padding-block-start: calc(.75rem + env(safe-area-inset-top));
    padding-block-end: .75rem;
    padding-inline-start: calc(var(--space-md) + env(safe-area-inset-left));
    padding-inline-end: calc(var(--space-md) + env(safe-area-inset-right));
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.nav-brand {
    color: var(--color-text-on-dark);
    font-size: var(--font-md);
    font-weight: 700;
    text-decoration: none;
    padding: var(--space-sm);
    border-radius: var(--border-radius);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--space-xs);
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--color-text-on-dark);
    text-decoration: none;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
}

.nav-link:hover,
.nav-link:focus {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-warning);
}

.nav-link.active {
    background: var(--color-primary);
    color: white;
}

/* ===== Hero Section ===== */
.hero {
    text-align: center;
    margin-block: var(--space-3xl);
    padding: var(--space-2xl) 0;
}

.hero-title {
    font-size: clamp(2rem, 8vw, 3.5rem);
    margin-bottom: var(--space-lg);
    color: var(--color-dark);
    font-weight: 800;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 4vw, 1.5rem);
    color: var(--color-warning);
    margin-bottom: var(--space-2xl);
    line-height: 1.4;
    font-weight: 600;
}

/* ===== Hero Image ===== */
.photo-section {
    text-align: center;
    margin-block: var(--space-2xl);
}

.hero-image {
    display: inline-block;
}

.hero-photo {
    inline-size: clamp(150px, 22vw, 200px);
    block-size: auto;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--shadow-xl);
    border: 4px solid var(--color-light-dark);
    transition: var(--transition-slow);
}

.hero-photo:hover {
    transform: scale(1.05);
    border-color: var(--color-warning);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: max(.5rem, calc((44px - 1em)/2)) var(--space-xl);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    font: inherit;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-slow);
    min-height: 44px;
    text-align: center;
}

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

.btn-primary:hover,
.btn-primary:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: #eab308;
}

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

.btn-secondary:hover,
.btn-secondary:focus {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== Sections ===== */
.section-title {
    font-size: clamp(1.5rem, 6vw, 2.25rem);
    text-align: center;
    margin-bottom: var(--space-2xl);
    color: var(--color-dark);
    font-weight: 700;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -var(--space-md);
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-warning);
    border-radius: 2px;
}

/* ===== Skills Section ===== */
.skills-section {
    margin-block: var(--space-3xl);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    max-width: 800px;
    margin: 0 auto;
}

.skill-card {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-light-dark);
    transition: var(--transition-slow);
}

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

.skill-name {
    font-size: var(--font-md);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-dark);
}

.skill-level {
    background: var(--color-light-dark);
    border-radius: 100px;
    height: 8px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-warning));
    border-radius: 100px;
    width: var(--progress);
    position: relative;
    transition: width 1s ease;
}

.skill-percent {
    position: absolute;
    right: var(--space-sm);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--color-dark);
    background: rgba(255, 255, 255, 0.9);
    padding: 2px 6px;
    border-radius: var(--border-radius);
}

/* ===== Projects Section ===== */
.projects-preview {
    margin-block: var(--space-3xl);
}

.projects-preview__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
    gap: var(--space-lg);
    margin-block: var(--space-2xl);
}

.project-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform .2s ease, box-shadow .2s ease;
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--color-light-dark);
    padding: var(--space-xl);
    text-align: center;
}

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

.project-card__icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.project-card__title {
    font-size: var(--font-md);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-dark);
    overflow-wrap: anywhere;
}

.project-card__description {
    color: var(--color-text-light);
    margin-bottom: var(--space-lg);
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    justify-content: center;
}

.tag {
    background: var(--color-light-dark);
    color: var(--color-text);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 100px;
    font-size: var(--font-sm);
    font-weight: 500;
}

/* ===== Footer ===== */
.footer {
    background: var(--color-dark);
    color: var(--color-text-on-dark);
    text-align: center;
    padding: var(--space-xl) 0;
    margin-top: auto;
    
    /* Safe area для жестовой панели */
    padding-bottom: calc(var(--space-xl) + env(safe-area-inset-bottom));
    border-top: 2px solid var(--color-warning);
}

.footer p {
    margin: 0;
    font-size: var(--font-md);
    font-weight: 500;
    color: var(--color-text-on-dark);
}

/* Дополнительные стили для контраста в светлой теме */
@media (prefers-color-scheme: light) {
    .footer {
        background: #0f172a; /* Темно-синий */
        color: #f1f5f9; /* Светлый текст */
    }
    
    .footer p {
        color: #f1f5f9;
    }
}

/* Явно задаем темный фон для надежности */
.footer {
    background: #0f172a !important;
    color: #f1f5f9 !important;
}

.footer p {
    color: #f1f5f9 !important;
}
/* ===== Container Queries ===== */
@supports (container-type: inline-size) {
    .projects-area {
        container-type: inline-size;
        container-name: projects;
    }
    
    @container projects (min-width: 640px) {
        .projects-list { 
            grid-template-columns: repeat(2, 1fr); 
        }
    }
    
    @container projects (min-width: 960px) {
        .projects-list { 
            grid-template-columns: repeat(3, 1fr); 
        }
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .nav-content {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .nav-list {
        justify-content: center;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-preview__grid {
        grid-template-columns: 1fr;
    }
    
    .hero {
        margin-block: var(--space-2xl);
        padding: var(--space-xl) 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding-inline: var(--space-md);
    }
    
    .project-card {
        padding: var(--space-lg);
    }
    
    .skill-card {
        padding: var(--space-lg);
    }
}

/* ===== Accessibility Features ===== */

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

/* High Contrast */
@media (prefers-contrast: more) {
    .btn, .nav-link, .project-card {
        border: 2px solid currentColor;
    }
    
    .skill-progress {
        background: var(--color-dark);
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --color-light: #0f172a;
        --color-light-dark: #1e293b;
        --color-text: #f1f5f9;
        --color-text-light: #cbd5e1;
        --color-dark: #f8fafc;
    }
    
    .skill-card,
    .project-card {
        background: var(--color-light-dark);
        border-color: #334155;
    }
}

/* ===== Print Styles ===== */
@media print {
    .nav,
    .btn {
        display: none;
    }
    
    .page {
        min-height: auto;
    }
    
    .skill-progress {
        background: #000 !important;
    }
}

/* ===== Fix for Header Contrast ===== */
.header {
    background: #0f172a !important; /* Темно-синий */
    color: #ffffff !important;
}

.site-title {
    color: #ffffff !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

/* Убедимся, что навигация тоже контрастная */
.nav {
    background: #1e293b !important; /* Чуть светлее хедера */
}

.nav-brand,
.nav-link {
    color: #ffffff !important;
}

/* ===== Hero Image ===== */
.photo-section {
    text-align: center;
    margin-block: var(--space-2xl);
}

.hero-image {
    display: inline-block;
}

.hero-photo {
    inline-size: clamp(150px, 22vw, 200px);
    block-size: auto;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--shadow-xl);
    border: 4px solid var(--color-light-dark);
    transition: var(--transition-slow);
}

.hero-photo:hover {
    transform: scale(1.05);
    border-color: var(--color-warning);
}

/* ===== Projects Page Styles ===== */
.filters-section {
    margin-bottom: var(--space-2xl);
    text-align: center;
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
}

.filter-btn {
    padding: var(--space-sm) var(--space-lg);
    border: 2px solid var(--color-primary);
    background: transparent;
    color: var(--color-primary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    min-height: 44px;
}

.filter-btn:hover,
.filter-btn:focus {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

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

/* Projects Grid with Container Queries */
.projects-area {
    container-type: inline-size;
    container-name: projects;
}

.projects-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

@container projects (min-width: 640px) {
    .projects-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@container projects (min-width: 960px) {
    .projects-list {
        grid-template-columns: repeat(3, 1fr);
    }
}

.project-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-slow);
    overflow: hidden;
    border: 1px solid var(--color-light-dark);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.project-card__image {
    position: relative;
    overflow: hidden;
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: var(--transition-slow);
}

.project-card:hover .project-image {
    transform: scale(1.05);
}

.project-card__content {
    padding: var(--space-lg);
}

.project-card__title {
    font-size: var(--font-md);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-dark);
    overflow-wrap: anywhere;
}

.project-card__description {
    color: var(--color-text-light);
    margin-bottom: var(--space-lg);
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.project-details-btn {
    width: 100%;
}

/* ===== Modal Styles ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-md);
}

.modal-content {
    background: white;
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-light-dark);
}

.modal-title {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--color-dark);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    padding: var(--space-xs);
    color: var(--color-text-light);
    transition: var(--transition);
    border-radius: var(--border-radius);
}

.modal-close:hover,
.modal-close:focus {
    color: var(--color-dark);
    background: var(--color-light-dark);
}

.modal-body {
    padding: var(--space-lg);
}

.modal-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin-bottom: var(--space-lg);
}

.modal-technologies {
    margin-bottom: var(--space-lg);
}

.modal-technologies h3 {
    font-size: var(--font-md);
    margin-bottom: var(--space-sm);
    color: var(--color-dark);
}

.modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.modal-links {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.modal-links .btn {
    flex: 1;
    min-width: 120px;
}

.success-modal {
    text-align: center;
    max-width: 400px;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
}

/* ===== Diary Page Styles ===== */
.diary-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
}

@container (min-width: 1024px) {
    .diary-layout {
        grid-template-columns: 2fr 1fr;
    }
}

.timeline-section {
    position: relative;
}

.timeline-title {
    font-size: var(--font-lg);
    margin-bottom: var(--space-xl);
    color: var(--color-dark);
}

.timeline {
    position: relative;
    margin-bottom: var(--space-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-light-dark);
}

.timeline-item {
    display: flex;
    margin-bottom: var(--space-xl);
    position: relative;
}

.timeline-marker {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--space-lg);
    flex-shrink: 0;
    z-index: 1;
}

.timeline-marker.completed {
    background: var(--color-success);
    color: white;
}

.timeline-marker.in-progress {
    background: var(--color-warning);
    color: var(--color-dark);
}

.timeline-icon {
    font-weight: bold;
    font-size: 1.2rem;
}

.timeline-content {
    flex: 1;
    background: white;
    padding: var(--space-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-light-dark);
}

.timeline-date {
    display: block;
    font-size: var(--font-sm);
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.timeline-event {
    font-size: var(--font-md);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-dark);
}

.timeline-description {
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

/* Diary Sidebar */
.diary-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.sidebar-title {
    font-size: var(--font-md);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--color-dark);
}

.courses-section {
    background: white;
    padding: var(--space-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-light-dark);
}

.course-item {
    margin-bottom: var(--space-lg);
}

.course-item:last-child {
    margin-bottom: 0;
}

.course-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xs);
}

.course-name {
    font-weight: 500;
    color: var(--color-dark);
}

.course-progress {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--color-primary);
}

.progress-bar {
    background: var(--color-light-dark);
    border-radius: 100px;
    height: 6px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-success));
    border-radius: 100px;
    width: var(--progress);
    transition: width 1s ease;
}

.achievements-section {
    background: white;
    padding: var(--space-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-light-dark);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-lg);
}

.achievement-item {
    text-align: center;
}

.achievement-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}

.achievement-text {
    font-size: var(--font-sm);
    color: var(--color-text-light);
    line-height: 1.4;
}

/* ===== Contacts Page Styles ===== */
.contacts-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    max-width: 1000px;
    margin: 0 auto;
}

@container (min-width: 768px) {
    .contacts-layout {
        grid-template-columns: 2fr 1fr;
    }
}

.contact-form-section {
    background: white;
    padding: var(--space-2xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-light-dark);
}

.form-title {
    font-size: var(--font-lg);
    font-weight: 600;
    margin-bottom: var(--space-xl);
    color: var(--color-dark);
    text-align: center;
}

.contact-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

@container (min-width: 480px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 600;
    color: var(--color-dark);
}

.required {
    color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--color-light-dark);
    border-radius: var(--border-radius);
    font: inherit;
    transition: var(--transition);
    background: white;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-hint {
    font-size: var(--font-sm);
    color: var(--color-text-light);
    margin-top: var(--space-xs);
}

.error-message {
    color: var(--color-error);
    font-size: var(--font-sm);
    margin-top: var(--space-xs);
    display: none;
}

.error-message.show {
    display: block;
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--color-error);
}

.form-actions {
    text-align: center;
    margin-top: var(--space-xl);
}

.btn-large {
    padding: var(--space-md) var(--space-2xl);
    font-size: var(--font-md);
}

/* Contact Info Section */
.contact-info-section {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-light-dark);
    height: fit-content;
}

.contact-info-title {
    font-size: var(--font-lg);
    font-weight: 600;
    margin-bottom: var(--space-xl);
    color: var(--color-dark);
    text-align: center;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.contact-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-details {
    flex: 1;
}

.contact-method-title {
    font-size: var(--font-md);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-dark);
}

.contact-link,
.contact-text {
    color: var(--color-text-light);
    text-decoration: none;
    transition: var(--transition);
}

.contact-link:hover,
.contact-link:focus {
    color: var(--color-primary);
}

.contact-additional {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-light-dark);
}

.additional-title {
    font-size: var(--font-md);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-dark);
}

.additional-text {
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ===== Responsive Design Improvements ===== */
@media (max-width: 768px) {
    .filters {
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        width: 200px;
    }
    
    .diary-layout {
        grid-template-columns: 1fr;
    }
    
    .contacts-layout {
        grid-template-columns: 1fr;
    }
    
    .contact-form-section,
    .contact-info-section {
        padding: var(--space-lg);
    }
    
    .modal-content {
        margin: var(--space-md);
    }
    
    .modal-links {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .timeline-item {
        flex-direction: column;
    }
    
    .timeline-marker {
        margin-right: 0;
        margin-bottom: var(--space-md);
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ===== Dark Mode Support ===== */
@media (prefers-color-scheme: dark) {
    .project-card,
    .timeline-content,
    .courses-section,
    .achievements-section,
    .contact-form-section,
    .contact-info-section {
        background: var(--color-dark-light);
        border-color: #334155;
        color: var(--color-text-on-dark);
    }
    
    .project-card__title,
    .timeline-event,
    .course-name,
    .form-title,
    .contact-info-title,
    .contact-method-title,
    .additional-title,
    .modal-title {
        color: var(--color-text-on-dark);
    }
    
    .project-card__description,
    .timeline-description,
    .achievement-text,
    .contact-text,
    .additional-text,
    .form-label {
        color: #cbd5e1;
    }
    
    .form-input,
    .form-select,
    .form-textarea {
        background: #1e293b;
        border-color: #334155;
        color: var(--color-text-on-dark);
    }
    
    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
        border-color: var(--color-primary);
    }
    
    .progress-bar {
        background: #334155;
    }
    
    .modal-content {
        background: var(--color-dark-light);
        color: var(--color-text-on-dark);
    }
}

/* Стили для галереи */
.gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin: 2rem 0;
}

.gallery__item {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.gallery__item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.gallery__image-container {
    overflow: hidden;
    position: relative;
}

.gallery__image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.gallery__item:hover .gallery__image {
    transform: scale(1.05);
}

.gallery__caption {
    padding: 1.5rem;
}

.gallery__caption h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.gallery__caption p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Object-fit демонстрация */
.object-fit-demo {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.object-fit-item {
    text-align: center;
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.object-fit-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.object-fit-image-container {
    height: 250px;
    overflow: hidden;
}

.object-fit-image-container img {
    width: 100%;
    height: 100%;
    display: block;
}

.object-fit-cover {
    object-fit: cover;
}

.object-fit-contain {
    object-fit: contain;
    background: #f1f5f9;
}

.object-fit-fill {
    object-fit: fill;
}

.object-fit-caption {
    padding: 1.5rem;
}

.object-fit-caption h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.object-fit-caption p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Адаптивность для планшетов */
@media (max-width: 1024px) {
    .gallery {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .object-fit-demo {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .gallery__image {
        height: 200px;
    }
    
    .object-fit-demo {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .object-fit-image-container {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .gallery {
        grid-template-columns: 1fr;
    }
    
    .gallery__image {
        height: 180px;
    }
    
    .object-fit-image-container {
        height: 180px;
    }
}

/* Добавьте эти стили в ваш styles.css */

/* Стили для доступности */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.required {
    color: #dc2626;
}

.form-label--required::after {
    content: " *";
    color: #dc2626;
}

.error-message {
    color: #dc2626;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: none;
}

.form-input:invalid + .error-message,
.form-textarea:invalid + .error-message {
    display: block;
}

/* Fieldset стили */
.form-fieldset {
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    background: #f8fafc;
}

.form-legend {
    font-weight: 600;
    color: #1e293b;
    padding: 0 0.5rem;
}

/* Checkbox стили */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-input {
    width: 1.25rem;
    height: 1.25rem;
}

/* Фокус стили */
.form-input:focus,
.form-textarea:focus,
.form-select:focus,
.btn:focus,
.nav-link:focus,
.contact-link:focus {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #2563eb;
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 6px;
}

/* Модальное окно */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal.show {
    display: block;
}

.modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 20px;
    border-radius: 8px;
    max-width: 500px;
    position: relative;
}