/* ==========================================================================
   Riccardo Gaffuri - Personal Site
   Minimalismo scuro, accenti ftalo
   ========================================================================== */

:root {
    /* Colors */
    --bg: #0a0a0a;
    --bg-elevated: #111111;
    --text: #e0e0e0;
    --text-muted: #888888;
    --accent: #1a5c4c; /* verde ftalo scuro */
    --accent-bright: #2a8a72; /* verde ftalo più vivido per hover */
    --border: #222222;
    
    /* Typography */
    --font-body: 'OpenDyslexic', sans-serif;
    --font-display: 'OpenDyslexic', sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    
    /* Sizing */
    --max-width: 1100px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    min-height: 100vh;
    overflow-x: hidden;
    max-width: 100vw;
}

::selection {
    background-color: var(--accent);
    color: var(--text);
}

/* Links */
a {
    color: var(--text);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover,
a:focus {
    color: var(--accent-bright);
}

a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    background-color: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav__logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: normal;
    letter-spacing: 0.05em;
}

.nav__links {
    display: flex;
    gap: var(--space-md);
}

.nav__links a {
    font-size: 0.875rem;
    text-transform: lowercase;
    letter-spacing: 0.05em;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--space-lg);
    max-width: var(--max-width);
    margin: 0 auto;
    padding: calc(var(--space-xl) + 40px) var(--space-md) var(--space-lg);
}

.hero__content {
    padding-right: var(--space-md);
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: normal;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.hero__subtitle {
    font-size: 1.125rem;
    color: var(--accent-bright);
    margin-bottom: var(--space-xs);
    letter-spacing: 0.02em;
}

.hero__company {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.hero__separator {
    margin: 0 0.25em;
    opacity: 0.5;
}

.hero__image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__image img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 2px;
    filter: grayscale(100%) contrast(1.1);
    transition: filter 0.4s ease;
}

.hero__image img:hover {
    filter: grayscale(0%) contrast(1);
}

/* ==========================================================================
   About
   ========================================================================== */

.about {
    padding: var(--space-lg) var(--space-md) var(--space-xl);
    max-width: var(--max-width);
    margin: 0 auto;
    border-top: 1px solid var(--border);
}

.about__title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: normal;
    margin-bottom: var(--space-lg);
    color: var(--text-muted);
    text-transform: lowercase;
}

.about__content {
    max-width: 680px;
}

.about__content p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text);
    margin-bottom: var(--space-md);
}

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

.about__content a {
    color: var(--accent-bright);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.about__content a:hover {
    color: var(--text);
}

/* ==========================================================================
   Contact
   ========================================================================== */

.contact {
    padding: var(--space-lg) var(--space-md);
    max-width: var(--max-width);
    margin: 0 auto;
    border-top: 1px solid var(--border);
}

.contact__title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: normal;
    margin-bottom: var(--space-md);
    color: var(--text-muted);
    text-transform: lowercase;
}

.contact__links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-md);
}

.contact__link {
    font-size: 0.9375rem;
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.contact__link:hover {
    color: var(--accent-bright);
}

.contact__form-toggle {
    margin-top: var(--space-sm);
}

.contact__form-toggle summary {
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.875rem;
    padding: var(--space-xs) 0;
    transition: color 0.2s ease;
}

.contact__form-toggle summary:hover {
    color: var(--accent-bright);
}

.contact__form-toggle[open] summary {
    margin-bottom: var(--space-md);
}

.contact__form {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    max-width: 500px;
}

.form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

.form__group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

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

.form__group input,
.form__group textarea {
    font-family: var(--font-body);
    font-size: 1rem;
    padding: var(--space-sm);
    background-color: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 2px;
    transition: border-color 0.2s ease;
}

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

.form__group textarea {
    resize: vertical;
    min-height: 80px;
}

.form__submit {
    font-family: var(--font-body);
    font-size: 0.875rem;
    padding: var(--space-sm) var(--space-md);
    background-color: transparent;
    border: 1px solid var(--text-muted);
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s ease;
    align-self: flex-start;
    text-transform: lowercase;
    letter-spacing: 0.05em;
}

.form__submit:hover,
.form__submit:focus {
    border-color: var(--accent-bright);
    color: var(--accent-bright);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    padding: var(--space-lg) var(--space-md);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
}

.footer p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.footer a {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
    :root {
        --space-lg: 3rem;
        --space-xl: 5rem;
    }
    
    .nav {
        padding: var(--space-sm);
    }
    
    .nav__links {
        gap: var(--space-sm);
    }
    
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: calc(var(--space-xl) + 60px);
    }
    
    .hero__content {
        padding-right: 0;
        order: 2;
    }
    
    .hero__image {
        order: 1;
    }
    
    .hero__image img {
        max-width: 280px;
    }
    
    .about__grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .form__row {
        grid-template-columns: 1fr;
    }
    
    .footer {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .nav {
        padding: var(--space-xs) var(--space-sm);
    }
    
    .nav__links {
        gap: var(--space-xs);
    }
    
    .nav__links a {
        font-size: 0.75rem;
    }
    
    .hero__title {
        font-size: 2.5rem;
    }
}

/* ==========================================================================
   Utilities
   ========================================================================== */

.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;
}