:root {
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Space Grotesk', var(--font-sans);

    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-accent: #f0f0f0;

    --text-primary: #111111;
    --text-secondary: #555555;
    --text-muted: #888888;

    --accent: #000000;
    --accent-light: #333333;
    --border-color: #eeeeee;

    --container-width: 1200px;
    --header-height: 80px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: 8rem 0;
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-link {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 32px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: 3rem;
    list-style: none;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.nav-link:hover {
    color: var(--accent);
}

/* Hero */
.hero {
    padding-top: calc(var(--header-height) + 6rem);
    padding-bottom: 8rem;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    margin-bottom: 2rem;
}

.text-gradient {
    color: var(--text-muted);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 540px;
    margin-bottom: 3rem;
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.85rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--accent-light);
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid var(--accent);
    background: transparent;
}

.btn-outline:hover {
    background: var(--bg-accent);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

/* Glass Card */
.glass-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    transition: var(--transition);
}

.hero-card {
    box-shadow: 20px 20px 0px var(--bg-accent);
}

.card-header {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.red {
    background: #ff5f56;
}

.yellow {
    background: #ffbd2e;
}

.green {
    background: #27c93f;
}

.code-preview {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Sections Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
}

/* Projects */
.filter-group {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    background: none;
    border: none;
    padding: 0.5rem 1rem;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition);
}

.filter-btn.active,
.filter-btn:hover {
    color: var(--accent);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 2rem;
}

.project-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card:hover {
    border-color: var(--accent);
}

.project-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.project-cat {
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.1em;
}

.project-status {
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    padding: 0.25rem 0.5rem;
    background: var(--bg-accent);
}

.project-status.active {
    background: #e6fcf5;
    color: #0ca678;
}

.project-status.maintenance {
    background: #fff9db;
    color: #f08c00;
}

.project-status.archived {
    background: #f1f3f5;
    color: #495057;
}

.project-card h3 {
    margin-bottom: 1rem;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.project-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

/* Docs */
.bg-alt {
    background-color: var(--bg-secondary);
}

.search-wrapper {
    position: relative;
    width: 300px;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid var(--border-color);
    background: white;
    font-family: inherit;
    font-size: 0.9rem;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.doc-item {
    background: white;
    padding: 2rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.doc-item:hover {
    border-color: var(--accent);
}

.doc-icon {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.doc-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.doc-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.doc-link {
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Contact */
.contact-card-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    padding: 4rem !important;
}

.social-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 3rem;
}

.social-link {
    color: var(--text-muted);
}

.social-link:hover {
    color: var(--accent);
    transform: translateY(-3px);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.form-group input,
.form-group textarea {
    padding: 1rem;
    border: 1px solid var(--border-color);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.doc-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 2rem;
}

.preview-modal {
    width: 100%;
    max-width: 900px;
    background: white;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    padding: 2.5rem;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.close-preview {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-muted);
}

.preview-note {
    margin-top: 1.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a:hover {
    color: var(--accent);
}

/* Mobile */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-btns {
        justify-content: center;
    }

    .hero-card {
        margin-top: 4rem;
    }

    .contact-card-wrapper {
        grid-template-columns: 1fr;
        padding: 2.5rem !important;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
}