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

:root {
    --bg: #faf9f7;
    --surface: #f3f1ed;
    --surface-2: #eae7e2;
    --surface-3: #e0ddd7;
    --border: #e0e1e5;
    --border-hover: #c5c7cc;
    --text: #1a1a1a;
    --text-muted: #6b6b6b;
    --accent: #7c3aed;
    --accent-2: #6d28d9;
    --accent-light: #ede9fe;
    --accent-glow: rgba(124, 58, 237, 0.08);
    --accent-glow-strong: rgba(124, 58, 237, 0.15);
    --green: #059669;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

body {
    font-family: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.25s;
}

a:hover {
    color: var(--accent-2);
}

/* ── Page wrapper ── */
.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Header ── */
.site-header {
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 max(2rem, calc((100% - 1100px) / 2 + 2rem));
    position: sticky;
    top: 0;
    z-index: 100;
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    background: rgba(250, 249, 247, 0.85);
}

.site-header .logo {
    padding: 0.85rem 0;
    text-decoration: none;
}

.site-header .logo:hover {
    text-decoration: none;
}

.site-header .logo h1 {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, #1a1a1a 0%, #7c3aed 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.site-header nav ul {
    list-style: none;
    display: flex;
    gap: 0.2rem;
}

.site-header nav ul li a {
    display: block;
    padding: 0.45rem 0.85rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.25s;
}

.site-header nav ul li a:hover {
    color: var(--text);
    background: var(--surface-2);
    text-decoration: none;
}

.site-header nav ul li a.active {
    color: #fff;
    background: var(--accent);
    text-decoration: none;
    box-shadow: 0 2px 10px var(--accent-glow-strong);
}

/* ── Main ── */
.main-content {
    flex: 1;
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    padding: 3rem 2rem;
    animation: fadeUp 0.6s ease-out;
}

.main-content > header {
    margin-bottom: 2.5rem;
}

.main-content > header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.04em;
    line-height: 1.2;
}

.main-content > header hgroup h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.04em;
    line-height: 1.2;
}

.main-content > header hgroup h3 {
    font-size: 1.05rem;
    font-weight: 400;
    color: var(--text-muted);
    margin-top: 0.4rem;
}

/* ── Footer ── */
.site-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    padding: 3rem max(2rem, calc((100% - 1100px) / 2 + 2rem)) 2rem;
    margin-top: auto;
}

.site-footer nav {
    margin-bottom: 1.5rem;
}

.site-footer nav h3 {
    color: var(--text);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 0.9rem;
}

.site-footer nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.5rem;
}

.site-footer nav ul li a {
    color: var(--text-muted);
    font-size: 0.88rem;
    transition: color 0.25s;
}

.site-footer nav ul li a:hover {
    color: var(--accent);
    text-decoration: none;
}

.site-footer .copyright {
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    text-align: center;
    font-size: 0.78rem;
}

/* ── Sections ── */
section {
    margin-bottom: 3rem;
}

section > header {
    margin-bottom: 1.25rem;
}

section > header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
}

section > footer {
    margin-top: 1.25rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ── Article ── */
article {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    margin-bottom: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

article:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

article > header h3 {
    color: var(--text);
    font-weight: 700;
    margin-bottom: 0.4rem;
    letter-spacing: -0.01em;
}

article > header p {
    color: var(--text-muted);
    font-size: 0.88rem;
}

article > footer {
    margin-top: 1.25rem;
    font-size: 0.82rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    padding-top: 0.75rem;
}

/* ── Aside ── */
aside {
    background: var(--accent-light);
    border: 1px solid rgba(124, 58, 237, 0.15);
    border-left: 3px solid var(--accent);
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: var(--radius);
}

aside header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-2);
    margin-bottom: 0.4rem;
}

/* ── hgroup ── */
hgroup h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.04em;
}

hgroup h3 {
    font-size: 1.05rem;
    font-weight: 400;
    color: var(--text-muted);
    margin-top: 0.3rem;
}

/* ── Gallery ── */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
}

figure {
    margin: 0;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg);
    border: 1px solid var(--border);
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.35s, box-shadow 0.35s;
}

figure:hover {
    transform: translateY(-5px) scale(1.01);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
}

figure img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

figure:hover img {
    transform: scale(1.05);
}

figcaption {
    padding: 0.85rem 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ── Forms ── */
/* ── Contact layout ── */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2.5rem;
    align-items: start;
}

.contact-form {
    margin-bottom: 0;
}

.contact-sidebar {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    border-left: 3px solid var(--accent);
    padding: 1.75rem;
    position: sticky;
    top: 5rem;
}

.contact-sidebar header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 1.25rem;
}

.contact-item {
    margin-bottom: 1.25rem;
}

.contact-item strong {
    display: block;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 0.2rem;
}

.contact-item p {
    color: var(--text);
    font-size: 0.92rem;
    line-height: 1.5;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    font-size: 0.88rem;
    margin-bottom: 0.45rem;
    color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.7rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    font-family: inherit;
    color: var(--text);
    transition: border-color 0.25s, box-shadow 0.25s;
}

.form-group label input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
    vertical-align: middle;
}

.form-group .checkbox-label {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #aaa;
}

.form-group small {
    display: block;
    margin-top: 0.35rem;
    color: var(--text-muted);
    font-size: 0.78rem;
}

button, .btn {
    display: inline-block;
    padding: 0.7rem 1.75rem;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    letter-spacing: -0.01em;
}

button:hover, .btn:hover {
    background: var(--accent-2);
    box-shadow: 0 4px 15px var(--accent-glow-strong);
    transform: translateY(-1px);
}

/* ── Table ── */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

th, td {
    padding: 0.85rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--surface);
    font-weight: 600;
    color: var(--text);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

tr {
    transition: background 0.2s;
}

tr:hover {
    background: var(--surface);
}

/* ── Media ── */
video, audio {
    max-width: 100%;
    border-radius: var(--radius);
    margin: 1rem 0;
}

canvas {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: block;
    margin: 1rem 0;
}

/* ── Cards ── */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 1rem;
}

.card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #7c3aed, #059669);
    opacity: 0;
    transition: opacity 0.35s;
}

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

.card:hover::before {
    opacity: 1;
}

.card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.card .tag {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-radius: 6px;
    margin-bottom: 0.6rem;
}

.card .tag.lang { background: #dbeafe; color: #1d4ed8; }
.card .tag.it { background: #d1fae5; color: #047857; }
.card .tag.dev { background: #ede9fe; color: #6d28d9; }

.card h3 {
    color: var(--text);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
    letter-spacing: -0.01em;
}

.card .price {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--green);
    margin: 0.4rem 0;
    letter-spacing: -0.03em;
}

.card p {
    color: var(--text-muted);
    font-size: 0.88rem;
}

/* ── FAQ ── */
details {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 0.6rem;
    overflow: hidden;
    transition: border-color 0.25s;
}

details:hover {
    border-color: var(--border-hover);
}

details summary {
    padding: 1.1rem 1.4rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    background: var(--surface);
    color: var(--text);
    transition: background 0.25s;
}

details summary:hover {
    background: var(--surface-2);
}

details[open] summary {
    border-bottom: 1px solid var(--border);
    color: var(--accent);
}

details .answer {
    padding: 1.1rem 1.4rem;
    color: var(--text-muted);
}

/* ── Hero ── */
.hero {
    position: relative;
    padding: 4.5rem 2.5rem;
    border-radius: 20px;
    margin-bottom: 2.5rem;
    text-align: center;
    overflow: hidden;
    color: #fff;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 30%, #4c1d95 60%, #581c87 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse 600px 300px at 20% 20%, rgba(139, 92, 246, 0.3), transparent),
        radial-gradient(ellipse 400px 400px at 80% 80%, rgba(59, 130, 246, 0.2), transparent);
}

.hero::after {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    pointer-events: none;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero h2 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 0.6rem;
    letter-spacing: -0.04em;
    position: relative;
    line-height: 1.15;
}

.hero p {
    font-size: 1.15rem;
    opacity: 0.85;
    position: relative;
    max-width: 500px;
    margin: 0 auto;
}

.hero .btn {
    margin-top: 2rem;
    background: #fff;
    color: #4c1d95;
    font-weight: 700;
    position: relative;
    padding: 0.8rem 2rem;
    font-size: 0.95rem;
}

.hero .btn:hover {
    background: #f0ecff;
    box-shadow: 0 0 40px rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* ── Image banner ── */
.img-banner {
    width: 100%;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 2.5rem;
    position: relative;
}

.img-banner img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    display: block;
    filter: brightness(0.7);
}

.img-banner .overlay {
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
}

.img-banner .overlay p {
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

/* ── Stats ── */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin: 2.5rem 0;
}

.stat {
    text-align: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem 1rem;
    transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.stat:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 20px var(--accent-glow);
    transform: translateY(-3px);
}

.stat .number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -0.03em;
}

.stat .label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

/* ── About image section ── */
.about-img {
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 2rem;
    border: 1px solid var(--border);
}

.about-img img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .site-header {
        flex-direction: column;
        text-align: center;
        padding: 0.75rem 1rem;
        gap: 0.5rem;
    }

    .site-header nav ul {
        justify-content: center;
        flex-wrap: wrap;
    }

    .site-footer {
        padding: 2rem 1rem 1.5rem;
    }

    .main-content {
        padding: 2rem 1rem;
    }

    .main-content > header h2,
    .main-content > header hgroup h2,
    hgroup h2 {
        font-size: 1.8rem;
    }

    .hero {
        padding: 3rem 1.5rem;
    }

    .hero h2 {
        font-size: 1.8rem;
    }

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

    .site-footer nav ul {
        flex-direction: column;
        gap: 0.3rem;
    }

    .contact-layout {
        grid-template-columns: 1fr;
    }

    .contact-sidebar {
        position: static;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}