@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-card: #1c2128;
    --bg-input: #0d1117;
    --border: #30363d;
    --border-focus: #58a6ff;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #484f58;
    --accent-green: #3fb950;
    --accent-blue: #58a6ff;
    --accent-purple: #bc8cff;
    --accent-orange: #d29922;
    --accent-red: #f85149;
    --accent-cyan: #39d353;
    --glow-green: rgba(63, 185, 80, 0.15);
    --glow-blue: rgba(88, 166, 255, 0.1);
    --font-mono: "JetBrains Mono", "Fira Code", Consolas, monospace;
    --font-display: "Space Grotesk", sans-serif;
    --radius: 6px;
}

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

body {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    display: flex;
    flex-direction: column;
    line-height: 1.6;
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-display);
    color: var(--text-primary);
}

p {
    color: var(--text-secondary);
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.2s;
}

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

article p {
    color: var(--text-secondary);
}

p a {
    text-decoration: underline 2px var(--accent-blue);
    font-weight: 600;
}

/* HIDDEN */
.hidden {
    display: none;
}

.code-block {
    font-family: var(--font-mono);
}

.color-red {
    color: var(--accent-red);
}

/* FORMS */
.form-format {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-format input, .form-format select {
    padding: 0.6rem 0.8rem;
    margin-bottom: 3px;
    border-radius: var(--radius);
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.form-format select {
    padding: 0.8rem;
    margin: 0.3rem 0;
}

.form-format label {
    text-align: left;
    color: var(--text-secondary);
}

/* BUTTONS */
.btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
}

.btn:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.btn-dblue {
    background-color: var(--accent-blue);
    color: #fff;
    border-color: var(--accent-blue);
}

/* HEADER / NAVBAR */
header {
    margin-bottom: 1.5rem;
}

#menu {
    position: fixed;
    z-index: 10;
    inset: 0;
    background-color: var(--bg-primary);
    opacity: 1;
}

#menu.chiuso {
    z-index: 99;
    transform: translateX(100vw);
    transition: all 0.3s ease-in-out;
}

#menu.aperto {
    z-index: 10;
    transform: translateX(0vw);
    transition: all 0.3s ease-in-out;
    background-color: var(--bg-primary);
}

nav ul {
    margin-top: 6rem;
    list-style: none;
}

nav ul li {
    margin-bottom: 1.2rem;
}

nav a {
    text-decoration: none;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 500;
    border: 1px solid var(--border);
    padding: 0.4rem 1.2rem;
    border-radius: var(--radius);
    transition: all 0.2s;
}

nav a:hover {
    color: var(--accent-green);
    border-color: var(--accent-green);
    text-decoration: none;
}

nav a.active {
    background-color: var(--accent-green);
    color: var(--bg-primary);
    border-color: var(--accent-green);
}

#barra-1,
#barra-2,
#barra-3 {
    background-color: var(--accent-green);
    display: block;
    width: 1.8rem;
    height: 3px;
    margin: 0.35rem 0;
    transition: 0.3s;
    border-radius: 2px;
}

#menu-icon {
    position: fixed;
    right: 1.2rem;
    top: 1rem;
    cursor: pointer;
    z-index: 30;
    background-color: transparent;
}

#menu-icon.trasforma #barra-2 {
    opacity: 0;
}

#menu-icon.trasforma #barra-1 {
    transform: rotate(-45deg) translate(-0.35rem, 0.35rem);
    background-color: var(--accent-red);
}

#menu-icon.trasforma #barra-3 {
    transform: rotate(45deg) translate(-0.38rem, -0.38rem);
    background-color: var(--accent-red);
}

@media (min-width: 700px) {
    #menu-icon {
        display: none;
    }

    #menu {
        z-index: 10;
        position: relative;
        height: 2.8rem;
        background-color: var(--bg-secondary);
        border-bottom: 1px solid var(--border);
    }

    #menu.chiuso {
        transform: translateX(0);
    }

    nav ul {
        margin-top: 0;
        display: flex;
        height: 2.8rem;
        align-items: center;
    }

    nav li {
        margin-left: 0.5rem;
        height: inherit;
        line-height: 2.8rem;
    }

    nav li:last-of-type {
        margin-left: auto;
        margin-right: 1rem;
    }

    nav a {
        font-size: 0.8rem;
        padding: 0.3rem 0.8rem;
        border: none;
        border-radius: var(--radius);
    }

    nav a:hover {
        background: rgba(63, 185, 80, 0.1);
    }

    nav a.active {
        background-color: var(--glow-green);
        color: var(--accent-green);
        border: none;
    }
}

/* FOOTER */
.bg-design {
    background-color: var(--bg-secondary);
}

footer {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border-top: 1px solid var(--border);
}

/* ARTICLES */
.article-img {
    max-width: 35%;
    height: auto;
}

.article-container {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
}

.article-title {
    font-size: 1.5rem;
    font-weight: bold;
}

.article-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.article-overview {
    font-size: 0.9rem;
}

.article-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.img-lenguage {
    background: var(--bg-secondary);
}

.img-lenguage img {
    width: 200px;
    height: 200px;
}

img:hover {
    cursor: pointer;
}

/* SCROLLBAR */
.scroll-bar {
    overflow-x: auto;
    scrollbar-width: none;
}

.scroll-bar:hover {
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--text-muted) transparent;
}

/* FADE IN */
.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.5s ease;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* SCROLL TO TOP */
.btn-arrow {
    opacity: 0;
    border: 1px solid var(--accent-green);
    padding: 12px;
    border-radius: var(--radius);
    font-size: 18px;
    z-index: 9999;
    position: fixed;
    right: 15px;
    bottom: 15px;
    background-color: var(--bg-secondary);
    color: var(--accent-green);
    cursor: pointer;
    transition: opacity 0.3s, box-shadow 0.3s;
}

.btn-arrow:hover {
    box-shadow: 0 0 12px var(--glow-green);
}

.btn-arrow.visible {
    opacity: 1;
}

.color-text-primary {
    color: var(--text-primary);
}

/* ALERTS */
.alert {
    padding: 0.8rem 1rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    border-left: 3px solid;
}

.alert-danger {
    color: var(--accent-red);
    background-color: rgba(248, 81, 73, 0.08);
    border-left-color: var(--accent-red);
}

.alert-success {
    color: var(--accent-green);
    background-color: rgba(63, 185, 80, 0.08);
    border-left-color: var(--accent-green);
}

.alert-warning {
    color: var(--accent-orange);
    background-color: rgba(210, 153, 34, 0.08);
    border-left-color: var(--accent-orange);
}

/* ANIMATED GRADIENT (disabled - dark mode) */
.animated-gradient {
    background-color: var(--bg-primary);
}

@media (max-width: 768px) {
    #menu a {
        color: var(--text-secondary);
    }
}

/* HOVER EFFECTS */
.on-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.on-hover:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(88, 166, 255, 0.1);
}

/* IMAGE WRAPPER */
.image-wrapper {
    position: relative;
    display: block;
    overflow: hidden;
    border-radius: var(--radius);
}

.image-wrapper img {
    display: block;
    width: 100%;
    height: auto;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.overlay-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(13, 17, 23, 0.7);
    color: var(--accent-green);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-wrapper:hover img {
    transform: scale(1.03);
    filter: brightness(0.7);
}

.image-wrapper:hover .overlay-text {
    opacity: 1;
}