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

:root {
    --color-primary: #111111;
    --color-primary-second: #2f2f2f;
    --color-secondary: #666666;
    --color-background: #ffffff;
    --color-background-secondary: #f6f6f6;
    --color-additional: #c8c8c8;
    
    --font-family: "DM Sans", sans-serif;
    
    --font-size-tiny: clamp(12px, 0.75rem + 0.217vw, 14px);
    --font-size-small: clamp(14px, 0.875rem + 0.217vw, 16px);
    --font-size-normal: clamp(16px, 1rem + 0.217vw, 18px);
    --font-size-medium: clamp(18px, 1.125rem + 0.217vw, 20px);
    --font-size-large: clamp(20px, 1.25rem + 0.435vw, 24px);
    --font-size-x-large: clamp(24px, 1.5rem + 0.87vw, 32px);
    --font-size-xx-large: clamp(32px, 2rem + 1.087vw, 42px);
    
    --spacing-10: 8px;
    --spacing-20: 16px;
    --spacing-30: 24px;
    --spacing-40: clamp(24px, 6vw, 32px);
    --spacing-50: clamp(32px, 7.5vw, 40px);
    --spacing-60: clamp(48px, 9vw, 64px);
    
    --content-width: 960px;
    --wide-width: 1240px;
    
    --line-height: 1.35;
    --border-radius: 20px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-normal);
    line-height: var(--line-height);
    color: var(--color-primary);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-primary);
    font-weight: 400;
    line-height: 1.25;
}

h1 {
    font-size: var(--font-size-xx-large);
}

h2 {
    font-size: var(--font-size-x-large);
    margin-bottom: var(--spacing-40);
}

h3 {
    font-size: var(--font-size-medium);
}

p {
    margin-bottom: 1em;
}

p:last-child {
    margin-bottom: 0;
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    border-bottom: 1px solid var(--color-secondary);
    transition: border-color 0.2s ease;
}

a:hover {
    border-bottom-color: transparent;
}

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

/* Layout */
.site-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    padding: var(--spacing-30);
}

.header-content {
    max-width: var(--wide-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-20);
}

.site-title {
    font-size: var(--font-size-medium);
    font-weight: 400;
    color: var(--color-primary);
    border-bottom: none;
}

.site-title:hover {
    border-bottom: none;
}

.social-links {
    display: flex;
    gap: var(--spacing-20);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background-color: var(--color-primary);
    color: var(--color-background);
    border-radius: 50%;
    border-bottom: none;
    transition: transform 0.2s ease;
}

.social-links a:hover {
    transform: scale(1.1);
    border-bottom: none;
}

.social-links svg {
    width: 18px;
    height: 18px;
}

/* Main Content */
.main {
    flex: 1;
    max-width: var(--content-width);
    margin: 0 auto;
    padding: var(--spacing-50) var(--spacing-30);
    width: 100%;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    gap: var(--spacing-60);
    padding: var(--spacing-50) 0;
}

.hero-image {
    flex-shrink: 0;
}

.hero-image img {
    width: 300px;
    aspect-ratio: 3/4;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.hero-content h1 {
    margin-bottom: var(--spacing-20);
}

.hero-subtitle {
    font-size: clamp(14px, 0.875rem + 0.652vw, 20px);
    line-height: 1.5;
    color: var(--color-primary);
}

/* Sections */
.section {
    padding: var(--spacing-50) 0;
}

.section p {
    font-size: clamp(14px, 0.875rem + 0.435vw, 18px);
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-40);
}

.skill-card {
    background-color: var(--color-background-secondary);
    border-radius: var(--border-radius);
    padding: var(--spacing-40);
}

.skill-card h3 {
    margin-bottom: var(--spacing-10);
}

.skill-card p {
    font-size: var(--font-size-small);
    color: var(--color-secondary);
    line-height: 1.5;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-40);
}

.project-card {
    display: flex;
    flex-direction: column;
}

.project-image {
    margin-bottom: var(--spacing-20);
}

.project-image img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-10);
    margin-bottom: var(--spacing-10);
}

.project-header h3 {
    margin: 0;
}

.project-tag {
    font-size: var(--font-size-small);
    color: var(--color-secondary);
}

.project-card > p {
    font-size: var(--font-size-small);
    color: var(--color-secondary);
    line-height: 1.5;
}

/* Contacts Grid */
.contacts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-40);
}

.contact-item h3 {
    font-size: clamp(14px, 0.875rem + 0.652vw, 20px);
    margin-bottom: var(--spacing-10);
}

.contact-item p {
    font-size: clamp(14px, 0.875rem + 0.435vw, 18px);
    color: var(--color-secondary);
}

.contact-item a {
    color: var(--color-secondary);
}

/* Footer */
.footer {
    padding: var(--spacing-30);
}

.footer-content {
    max-width: var(--wide-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-20);
}

.footer p {
    font-size: var(--font-size-small);
    color: var(--color-primary);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-subtitle br {
        display: none;
    }
    
    .skills-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contacts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .header-content {
        justify-content: center;
        text-align: center;
    }
    
    .hero-image img {
        width: 250px;
    }
    
    h1 br {
        display: none;
    }
    
    .contacts-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        justify-content: center;
        text-align: center;
        flex-direction: column;
    }
}