:root {
    --main-green-color: #427c5c;
    --bright-green-color: #00bf63;
    --title-font: Anton;
    --tab-min-height: 240px; /* altezza minima visibile per l'area contenuto tab */
    --tab-empty-min-height: 340px; /* altezza minima per le tab con i documenti */
}

body {
    background-color: #1f3e2d;
    color: #e0e0e0;
    font-family: 'Montserrat', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background-color: rgba(66, 124, 92, 1);
    /* per fallback */
    border-bottom: 1px solid rgba(0, 0, 0, 0.15);
    position: sticky;
    top: 0;
    z-index: 50;
    /* per il vertical scroll */
    transition: transform 260ms cubic-bezier(.2, .8, .2, 1),
        background-color 260ms ease,
        box-shadow 260ms ease,
        opacity 260ms ease,
        backdrop-filter 260ms ease;
}

/* quando avviene lo scroll */
header.scrolled {
    transform: translateY(-6px);
    background-color: rgba(66, 124, 92, 0.85);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
    opacity: 0.95;
    backdrop-filter: blur(6px) saturate(120%);
}

h2 {
    font-family: var(--title-font), sans-serif;
    font-size: 3rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0;
}

h3 {
    font-family: var(--title-font), sans-serif;
    font-size: 2.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0;
}

li:has(>h3) {
    padding-left: 0;
    list-style-type: none;
}

li:has(>h4) {
    padding-left: 0;
    list-style-type: none;
}

h4 {
    font-family: var(--title-font), sans-serif;
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0;
}

nav a {
    font-family: var(--title-font), sans-serif;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;

    color: #e0e0e0;
    text-decoration: none;
    margin-left: 0; /* la spaziatura avviene in .nav-buttons gap */
    transition: color 0.3s ease;
}

header nav {
    margin-left: auto;
    display: flex;
    align-items: center;
}

/* SELEZIONI TESTO */

/* stile per la selezione del testo (ovunque) */
::selection {
    background-color: var(--bright-green-color);
    color: #1f3e2d;
}

::-moz-selection {
    background-color: var(--bright-green-color);
    color: #1f3e2d;
}

/* stile per l'evidenziazione (solo dei risultati della ricerca nel glossario) */
mark {
    background-color: var(--bright-green-color);
    color: #1f3e2d;
    padding: 2px 3px;
    border-radius: 3px;
    font-weight: 600;
}

/* INTERNO NAVBAR */

.logo {
    margin: 0;
    font-size: inherit;
    font-weight: normal;
}

.logo img {
    padding: 5px;
    max-width: 180px;
    height: auto;
}

/* per nascondere visivamente il testo ma mantenerlo accessibile agli screen reader, utile anche per indicizzazione */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.nav-buttons {
    display: flex;
    gap: 15px;
    align-items: center;
}

.nav-button {
    display: inline-block;
    padding: 16px 36px;
    border-radius: 26px;
    border: 2px solid rgba(255, 255, 255, 0.95);
    text-decoration: none;
    color: rgba(255, 255, 255, 0.95);
    background-color: transparent;
    font-weight: 800;
    font-family: var(--title-font), sans-serif;
    font-size: 1.25rem;
    transition: background-color 180ms ease, color 180ms ease, transform 120ms ease;
}

.nav-button:hover {
    background-color: rgba(255,255,255,0.95);
    color: var(--main-green-color);
    transform: translateY(-1px);
}

/* per ridurre i bottoni sugli schermi stretti */
@media (max-width: 520px) {
    :root {
        --nav-button-padding-vertical: 10px;
        --nav-button-padding-horizontal: 10px;
        --nav-button-font-size: 0.4rem;
        --nav-button-gap: 8px;
    }

    .nav-buttons {
        gap: var(--nav-button-gap);
    }

    .nav-button {
        font-size: 1.05rem;
        padding: 10px 16px;
    }

    .logo img {
        padding: 5px;
        max-width: 100px;
    }

    h1.logo {
        margin: 0;
    }
}

.member p {
    font-family: var(--title-font), sans-serif;
    font-size: 1rem;
    letter-spacing: 0.4px;

    /* il resto dello stile rimane uguale */
    margin-top: 8px;
    font-weight: normal;
}

main {
    max-width: 1100px;
    margin: 5px auto;
    padding: 0 20px;
}

/* PARTE TEAM */

#team {
    text-align: center;
}

/* Card wrapper per i membri del team (separata dalla mini-card GitHub) */
.team-card {
    position: relative;
    border-radius: 24px;
    overflow: visible; /* permette alle ombre di essere visibili */
    background: linear-gradient(180deg, rgba(22,38,28,0.98), rgba(26,51,38,1));
    margin: 18px auto 24px;
    max-width: 1000px;
    width: 100%; /* assicura che rispetti il max-width */
    box-sizing: border-box; /* include padding nel calcolo della larghezza */
    box-shadow: 0 12px 34px rgba(0,0,0,0.38), inset 0 1px 0 rgba(255,255,255,0.02),
                0 0 0 3px var(--bright-green-color);
    border: none;
    padding: 20px 24px 24px;
}

/* sfondo gradient per la card del team */
.team-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(closest-side at 30% 25%, var(--bright-green-color), transparent 20%),
                radial-gradient(closest-side at 70% 75%, var(--main-green-color), transparent 25%);
    filter: blur(14px);
    opacity: 0.9;
    z-index: 0;
    pointer-events: none;
    border-radius: inherit;
}

.team-container {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 12px;
}

.member {
    text-align: center;
    max-width: 100px;
    cursor: pointer;
    transition: transform 180ms ease, background-color 180ms ease;
    text-decoration: none;
    color: inherit;
    display: block;
    padding: 8px 8px 4px 8px;
    border-radius: 12px;
}

.member:hover {
    transform: translateY(-3px);
    background-color: rgba(0, 191, 99, 0.15);
}

.member img {
    width: 86px;
    height: 86px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--bright-green-color);
    transition: border-color 180ms ease;
}

.member:hover img {
    border-color: #ffffff;
}

.member p {
    margin-top: 8px;
    font-weight: bold;
    font-size: 1.2rem;
}


/* PARTE DOCUMENTI */

#documents {
    margin-top: 5px;
}

#documents > h2 {
    text-align: center;
    margin-top: 20px;
    margin-bottom: 15px;
}

.tab-buttons {
    display: flex;
    justify-content: flex-start;
    gap: 12px;
}

/* wrapper per il bordo dei bottoni + il contenuto */
.tab-card {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    /* per i bordi arrotondati */
    background: linear-gradient(180deg, rgba(22, 38, 28, 0.98), rgba(26, 51, 38, 1));
    margin: 0 auto 24px;
    max-width: 1000px;
    /* outer ring per seguire il border-radius */
    box-shadow: 0 12px 34px rgba(0, 0, 0, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.02),
        0 0 0 3px var(--bright-green-color);
    border: none;
    /* transizione smooth per il resize quando si apre/chiude una tab */
    transition: height 400ms cubic-bezier(0.4, 0, 0.2, 1), box-shadow 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* DOCUMENTI: mini-card */

/* mini card usata per GitHub/email nella sezione team */
.tab-card.mini-card {
    /* copia lo stile usato per .tab-card */
    border-radius: 24px;
    max-width: 1000px;
    padding: 18px 24px;
    margin: 24px auto 25px; /* margine superiore aumentato per staccare dal titolo */
    min-height: 80px;
    width: 100%;
    box-sizing: border-box;
    box-shadow: 0 12px 34px rgba(0, 0, 0, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.02), 0 0 0 3px var(--bright-green-color);
}

.tab-card.mini-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(closest-side at 30% 25%, var(--bright-green-color), transparent 20%),
        radial-gradient(closest-side at 70% 75%, var(--main-green-color), transparent 25%);
    filter: blur(14px);
    opacity: 0.9;
    z-index: 0;
    pointer-events: none;
    border-radius: inherit;
}

.mini-card-inner {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    /* in modo che il gap sia responsive tra i due gruppi */
    gap: clamp(12px, 4vw, 60px);
}

.mini-left,
.mini-right {
    display: flex;
    align-items: center;
    gap: 18px;
}

.github-link svg {
    color: var(--bright-green-color);
    display: inline-block;
    /* icona responsive, non va oltre i 56px ma non diventa meno di 36px */
    width: clamp(36px, 6vw, 56px);
    height: auto;
    flex-shrink: 0;
}

.github-link-text,
.email-link {
    color: #e0e0e0;
    text-decoration: none;
    font-weight: 900;
    /* font responsice */
    font-size: clamp(0.95rem, 2.2vw, 1.35rem);
}

.github-link-text:hover,
.email-link:hover {
    color: var(--bright-green-color);
    text-decoration: underline;
}

@media (max-width: 520px) {
    .mini-card-inner {
        flex-direction: column;
        align-items: center;
        gap: 8px;
        text-align: center;
    }

    /* la mini-card si adatta via clamp() */
}

/* DOCUMENTI: tab-card */



.tab-buttons-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 6;
}

.tab-buttons-wrapper .tab-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    align-items: center;
}

@media (max-width: 520px) {
    .tab-buttons-wrapper {
        padding: 0 10px;
    }

    .tab-buttons-wrapper .tab-buttons {
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }
}

/* gradient dietro le card e dentro */
.tab-card::before {
    content: "";
    position: absolute;
    inset: 0;
    /* per riempire le card all'interno */
    background: radial-gradient(closest-side at 30% 25%, var(--bright-green-color), transparent 20%),
        radial-gradient(closest-side at 70% 75%, var(--main-green-color), transparent 25%);
    filter: blur(14px);
    opacity: 0.9;
    z-index: 0;
    pointer-events: none;
    border-radius: inherit;
    /* per far rispettare i bordi arrotondati */
}

/* porta il contenuto sopra il glow */
.tab-card .tab-buttons,
.tab-card .tab-content-area,
.tab-card .tab-content {
    position: relative;
    z-index: 1;
}

.tab-button {
    padding: 14px 28px;
    border: none;
    border-radius: 18px 18px 0 0;

    font-family: var(--title-font), sans-serif;
    font-size: 1.9rem;
    text-transform: uppercase;
    color: var(--bright-green-color);

    background-color: rgba(0, 191, 99, 0.12);
    cursor: pointer;
    transition: color 160ms ease, transform 120ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.tab-button:active {
    transform: scale(0.98);
}

/* stile pulsante attivo o in hover */
.tab-button:hover {
    background-color: rgba(0, 191, 99, 0.20);
    color: #f7f7f7;
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.25);
}

/* bottone attivo: evidenziato ma senza separazione dal bordo */
.tab-button.active {
    /* squadrata in basso così che sia "appoggi" alle card */
    background-color: var(--bright-green-color);
    color: #1f3e2d;
    border-radius: 18px 18px 0 0;
    margin-bottom: 0;
    box-shadow: none;
    position: relative;
    z-index: 4;
}

.tab-content-area {
    margin-top: 0;
    position: relative;
    /* per il posizionamento assoluto */
    /* nota: rimosso transizione per ora, preferita la velocità */
    transition: none;
    min-height: var(--tab-min-height);
    background: linear-gradient(180deg, rgba(22, 38, 28, 0.9), rgba(26, 51, 38, 1));
    border-radius: 0 0 24px 24px;
    padding-top: 18px;
}

/* quando il placeholder è visibile forzo il container ad essere più alto così che non ci sia il "salto" del layout */
.tab-content-area.empty-visible {
    min-height: var(--tab-empty-min-height);
}

.tab-content {
    max-height: 0;
    overflow: hidden;
    background-color: transparent;
    /* la card ha il bg */
    padding: 0 30px;
    /* per collassare verticalmente */
    border-radius: 0;
    border: none;
    pointer-events: none;
    opacity: 0;
    transition: opacity 180ms ease;
}

.tab-content.active {
    max-height: 1000px;
    opacity: 1;
    padding: 16px 30px 20px 30px;
    pointer-events: auto;
}

/* animazioni slide + fade */
.tab-content a {
    color: var(--bright-green-color);
    text-decoration: none;
    font-weight: bold;
}

.tab-content a:hover {
    text-decoration: underline;
}

/* scroll orizzontale per i link lunghi su schermi piccoli */
@media (max-width: 768px) {
    .tab-content {
        padding: 0 16px;
    }
    
    .tab-content.active {
        padding: 16px 16px 20px 16px;
        overflow-x: auto;
        overflow-y: visible;
    }
    
    .tab-content ul {
        display: inline-block;
        min-width: 100%;
        width: max-content;
    }
    
    .tab-content li a {
        white-space: nowrap;
    }

    /* scrollbar sottile e discreta */
    .tab-content {
        scrollbar-width: thin;
        scrollbar-color: var(--bright-green-color) rgba(0, 0, 0, 0.1);
    }

    .tab-content::-webkit-scrollbar {
        height: 6px;
    }

    .tab-content::-webkit-scrollbar-track {
        background: rgba(0, 0, 0, 0.1);
        border-radius: 3px;
    }

    .tab-content::-webkit-scrollbar-thumb {
        background: var(--bright-green-color);
        border-radius: 3px;
    }

    .tab-content::-webkit-scrollbar-thumb:hover {
        background: var(--main-green-color);
    }
}

/* placeholder per quando nessuna tab è selezionata: logo serpente */
.tab-empty {
    /* posizionato in maniera assoluta sull'overlay così che il flow container non sia alterato */
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: rgba(224, 224, 224, 0.85);
    z-index: 1;
    opacity: 1;
    transition: opacity 220ms ease-in-out;
    pointer-events: auto;
}

.tab-empty img {
    max-width: 180px;
    max-height: 80px;
    opacity: 0.92;
    filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.35));
}

/* fade out del logo quando non serve più */
.tab-empty.hidden {
    opacity: 0;
    pointer-events: none;
}

/* quando avviene il resize delle finestre, applica un piccolo effetto per evitare bruschi salti */
.is-resizing .tab-card,
.is-resizing .team-container,
.is-resizing .member img,
.is-resizing .nav-button,
.is-resizing .tab-button {
    transition-duration: 180ms !important;
    transition-timing-function: ease !important;
}

@media (max-width: 520px) {
    :root {
        --button-padding-vertical: 10px;
        --button-padding-horizontal: 20px;
        --button-font-size: 0.95rem;
    }

    .tab-buttons {
        flex-wrap: wrap;
        gap: 12px;
        padding: 0 10px;
    }

    .tab-button {
        font-size: 1.05rem;
        padding: 10px 14px;
        margin-bottom: 0;
    }

    .tab-button.active {
        border-radius: 12px 12px 0 0;
        margin-bottom: 0;
        box-shadow: none;
        z-index: 2;
    }
}

/* 
--------------------------
    PER GLOSSARIO
--------------------------
*/

.search-bar-container {
    max-width: 900px;
    margin: 30px auto 30px;
    padding: 0 20px;
    box-sizing: border-box;
}

#glossary-search {
    width: 100%;
    padding: 14px 22px;
    font-size: 1.1rem;
    font-family: 'Montserrat', sans-serif;
    color: #e0e0e0;
    background-color: rgba(255, 255, 255, 0.08);
    border: 2px solid var(--main-green-color);
    border-radius: 24px;
    box-sizing: border-box;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

#glossary-search:focus {
    outline: none;
    border-color: var(--bright-green-color);
    background-color: rgba(255, 255, 255, 0.05);
}

/* stile per il pulsante X (cancella) nella barra di ricerca */
#glossary-search::-webkit-search-cancel-button {
    -webkit-appearance: none;
    appearance: none;
    height: 20px;
    width: 20px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2300bf63'%3E%3Cpath d='M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12z'/%3E%3C/svg%3E");
    background-size: 20px 20px;
    background-repeat: no-repeat;
    background-position: center;
    cursor: pointer;
    transition: transform 0.2s ease, opacity 0.2s ease;
    opacity: 0.85;
}

#glossary-search::-webkit-search-cancel-button:hover {
    transform: scale(1.15);
    opacity: 1;
}

/* lista del glossario */
.glossary-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.glossary-letter-header {
    font-family: var(--title-font), sans-serif;
    font-size: 3.5rem;
    text-transform: uppercase;
    color: #e0e0e0;
    margin-top: 40px;
    margin-bottom: 10px;
    padding-bottom: 5px;
    border-bottom: 3px solid var(--main-green-color);
}

.glossary-entry {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.glossary-entry dt {
    font-family: var(--title-font), sans-serif;
    font-size: 1.9rem;
    letter-spacing: 0.5px;
    color: var(--bright-green-color);
    font-weight: normal;
    margin-bottom: 8px;
}

.glossary-entry dd {
    font-size: 1rem;
    line-height: 1.7;
    margin-left: 0;
    /* resetta lo stile di default */
}

#no-results {
    display: none;
    text-align: center;
    font-size: 1.3rem;
    color: rgba(224, 224, 224, 0.85);
    margin: 40px 0;
    font-weight: bold;
}

a.ref:visited{
    color: aqua;
}