/* =========================================================
   VARIABILI GLOBALI / RESET
========================================================= */

:root {
    user-select: none;
    -webkit-user-select: none; /* Safari */
    -moz-user-select: none;    /* Firefox */
    -ms-user-select: none;     /* IE */
    --color-bg: #0f172a;
    --color-surface: rgba(15, 23, 42, 0.7);
    --color-surface-strong: rgba(15, 23, 42, 0.85);
    --color-text: #e2e8f0;
    --color-muted: #94a3b8;
    --color-accent: #3b82f6;
    --color-accent-soft: rgba(59, 130, 246, 0.2);
    --shadow-soft: 0 30px 70px -45px rgba(15, 23, 42, 0.8);
    --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;  
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

/* =========================================================
   BODY / SFONDO
========================================================= */

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-sans);
    color: var(--color-text);

    /* Sfondo con gradienti + colore base */
    background:
        radial-gradient(circle at 16% 28%, rgba(148, 163, 184, 0.14), transparent 55%),
        radial-gradient(circle at 82% 0%, rgba(96, 165, 250, 0.18), transparent 60%),
        var(--color-bg);

    line-height: 1.6;
    transition: background 0.6s ease, color 0.6s ease;
}

/* Effetto alone luminoso fisso sopra lo sfondo */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 8% 90%, var(--color-accent-soft), transparent 65%),
        radial-gradient(circle at 92% 80%, rgba(59, 130, 246, 0.18), transparent 65%);
    opacity: 0.8;
    z-index: -1;
    transition: background 0.6s ease, opacity 0.6s ease;
}

/* =========================================================
   ELEMENTI DI BASE
========================================================= */

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Wrapper centrale per il contenuto */
.container {
    width: min(1100px, 92vw);
    margin: 0 auto;
}

/* =========================================================
   HEADER / NAVBAR
========================================================= */

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(18px);
    background: linear-gradient(180deg, rgba(10, 20, 45, 0.9), transparent);
    border-bottom: 1px solid rgba(148, 163, 184, 0.12);
    transform: translateY(0);
    transition:
        transform 0.3s ease,
        background 0.3s ease,
        border-color 0.3s ease;
}

/* Classe aggiunta via JS per nascondere la navbar in scroll down */
.site-header.is-hidden {
    transform: translateY(-100%);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1rem 0.25rem;
}

/* Logo in navbar */
.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.logo-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

/* Menu principale */

.main-nav ul {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

/* =========================================================
   NAV LINK (PILL GLASS)
========================================================= */

.nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.45rem 1.1rem;
    border-radius: 999px;

    font-weight: 500;
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;

    color: var(--color-muted);
    border: 1px solid rgba(148, 163, 184, 0.3);
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(14px) saturate(160%);
    -webkit-backdrop-filter: blur(14px) saturate(160%);

    box-shadow:
        0 0 0 1px rgba(15, 23, 42, 0.8) inset,
        0 16px 32px -24px rgba(15, 23, 42, 0.9);

    transition:
        color 0.22s ease,
        border-color 0.22s ease,
        background 0.22s ease,
        box-shadow 0.22s ease,
        transform 0.16s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
    color: #e5f0ff;
    border-color: var(--color-accent);
    background: rgba(15, 23, 42, 0.9);
    box-shadow:
        0 0 0 1px rgba(17, 45, 104, 0.8) inset,
        0 22px 40px -26px rgba(10, 35, 87, 0.55);
    transform: translateY(-1px);
}

.nav-link:active {
    transform: translateY(0);
    box-shadow:
        0 0 0 1px rgba(15, 23, 42, 1) inset,
        0 14px 26px -22px rgba(15, 23, 42, 0.95);
}

/* Stato attivo: gestito dallo script con aria-current="page" */
.nav-link[aria-current="page"] {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: rgba(59, 130, 246, 0.18);
}

/* Variante "secondary" old-style (tenuta per riuso eventuale) */
.nav-link.secondary {
    padding: 0.45rem 1rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.28);
    color: var(--color-text);
    transition: border 0.3s ease, transform 0.3s ease;
}

.nav-link.secondary:hover,
.nav-link.secondary:focus-visible {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

/* Pulsante login in header (leggermente più grande) */
.header-login {
    font-size: 0.9rem;
    padding: 0.55rem 1.3rem;
}

/* =========================================================
   FORM ELEMENTS / SELECT CUSTOM
========================================================= */

.custom-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;

    width: 100%;
    min-height: 2.7rem;
    padding: 0.75rem 1.15rem;
    padding-right: 3rem;
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, 0.32);

    background-color: rgba(15, 23, 42, 0.68);
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    line-height: 1.3;
    cursor: pointer;
    text-align: left;
    text-align-last: left;
    display: inline-block;

    box-shadow: 0 12px 28px -20px rgba(15, 23, 42, 0.8);
    transition:
        border 0.25s ease,
        box-shadow 0.25s ease,
        transform 0.25s ease,
        background 0.25s ease;

    /* Freccia custom con tre gradient */
    background-image:
        linear-gradient(45deg, transparent 50%, rgba(148, 163, 184, 0.78) 50%),
        linear-gradient(-45deg, transparent 50%, rgba(148, 163, 184, 0.78) 50%),
        linear-gradient(to right, rgba(148, 163, 184, 0.18), rgba(148, 163, 184, 0.18));
    background-position:
        calc(100% - 1.1rem) center,
        calc(100% - 0.7rem) center,
        calc(100% - 1.85rem) center;
    background-size: 7px 7px, 7px 7px, 1px 60%;
    background-repeat: no-repeat;
}

.custom-select:hover {
    border-color: var(--color-accent);
    box-shadow:
        0 0 0 2px rgba(59, 130, 246, 0.22),
        0 14px 34px -22px rgba(59, 130, 246, 0.45);
    background-image:
        linear-gradient(45deg, transparent 50%, var(--color-accent) 50%),
        linear-gradient(-45deg, transparent 50%, var(--color-accent) 50%),
        linear-gradient(to right, rgba(59, 130, 246, 0.24), rgba(59, 130, 246, 0.24));
}

.custom-select:focus,
.custom-select:focus-visible {
    outline: none;
    border-color: var(--color-accent);
    box-shadow:
        0 0 0 3px rgba(59, 130, 246, 0.28),
        0 16px 36px -22px rgba(59, 130, 246, 0.5);
    transform: translateY(-1px) scale(1.01);
    background-image:
        linear-gradient(45deg, transparent 50%, var(--color-accent) 50%),
        linear-gradient(-45deg, transparent 50%, var(--color-accent) 50%),
        linear-gradient(to right, rgba(59, 130, 246, 0.26), rgba(59, 130, 246, 0.26));
}

.custom-select option {
    background-color: rgba(10, 19, 35, 0.98);
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.95rem;
    padding: 0.65rem 1rem;
}

.custom-select option:checked {
    background-color: rgba(59, 130, 246, 0.32);
}

.custom-select option:hover {
    background-color: rgba(148, 163, 184, 0.2);
}

/* Nasconde la freccia di select su IE */
select::-ms-expand {
    display: none;
}

/* =========================================================
   HERO (HOME)
========================================================= */

.hero {
    padding: 7rem 0 5rem;
}

.hero-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    align-items: center;
}

/* Eyebrow piccola sopra il titolo (icone + testo) */
.hero-text .eyebrow {
    margin: 0 0 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.24em;
    font-size: 0.75rem;
    color: var(--color-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.hero-text h1 {
    margin: 0 0 1.2rem;
    font-size: clamp(2.5rem, 6vw, 3.6rem);
    line-height: 1.1;
    letter-spacing: -0.01em;
}

.hero-text .lead {
    margin: 0 0 2rem;
    max-width: 34rem;
    color: var(--color-muted);
    font-size: 1.05rem;
}

/* =========================================================
   HERO STATS
========================================================= */

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.1rem;
    margin: 0 0 1.8rem;
}

.stat-card {
    min-width: 150px;
    padding: 0.9rem 1.2rem;
    border-radius: 1rem;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(148, 163, 184, 0.6);
    box-shadow: var(--shadow-soft);
}

.stat-number {
    display: block;
    font-size: 1.6rem;
    font-weight: 700;
}

.stat-label {
    display: block;
    margin-top: 0.2rem;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--color-muted);
}

/* =========================================================
   BUTTONS GENERICI
========================================================= */

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.button {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.85rem 1.7rem;
    border-radius: 999px;

    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    cursor: pointer;

    border: 1px solid var(--color-accent);
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(14px) saturate(160%);
    -webkit-backdrop-filter: blur(14px) saturate(160%);

    color: var(--color-text);
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.06) inset,
        0 25px 40px -25px rgba(15, 23, 42, 0.9);

    transition:
        transform 0.18s ease-out,
        box-shadow 0.18s ease-out,
        background 0.18s ease-out,
        border-color 0.18s ease-out,
        color 0.18s ease-out;
}

.button i {
    font-size: 1rem;
}

/* Primario: evidenziato sul colore accent */
.button.primary {
    color: var(--color-accent);
}

/* Ghost: contorno più neutro */
.button.ghost {
    border-color: rgba(148, 163, 184, 0.6);
    color: var(--color-text);
    opacity: 0.95;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-2px) scale(1.01);
    background: rgba(15, 23, 42, 0.45);
    border-color: var(--color-accent);
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.12) inset,
        0 28px 55px -25px rgba(47, 66, 105, 0.7);
}

.button.primary:hover,
.button.primary:focus-visible {
    color: #e5f0ff;
}

.button:active {
    transform: translateY(0) scale(0.98);
    box-shadow:
        0 0 0 1px rgba(15, 23, 42, 0.9) inset,
        0 16px 30px -22px rgba(15, 23, 42, 1);
    filter: brightness(0.96);
}

/* =========================================================
   HERO VISUAL / ORBITAL (LOGO + ANELLI)
========================================================= */

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    position: relative;
    height: 70%;
    padding-top: 80px; /* Spazio tra hero text / bottoni e il visual */
}

.orbital {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Anello principale che ruota */
.ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(148, 163, 184, 0.5);
    width: 250px;
    height: 250px;
    animation: spin 10s linear infinite;
}

/* Secondo anello più grande con bordo tratteggiato */
.ring.secondary {
    border: 2px dashed rgba(148, 163, 184, 0.5);
    width: 300px;
    height: 300px;
    animation-duration: 12s;
}

/* Logo centrale sopra agli anelli */
.logo-img2 {
    width: 230px;
    height: 230px;
    position: absolute;
    z-index: 1;
}

/* ---------- ORBITAL: MEDIA QUERIES ---------- */

/* Tablet / medium */
@media (max-width: 920px) {
    .hero-visual {
        height: 60%;
        padding-top: 100px;
    }

    .orbital {
        width: 80%;
        height: 80%;
    }

    .ring {
        width: 220px;
        height: 220px;
    }

    .ring.secondary {
        width: 250px;
        height: 250px;
    }

    .logo-img2 {
        width: 200px;
        height: 200px;
    }

    .hero-actions {
        margin-top: 100px;
    }
}

/* Mobile piccolo */
@media (max-width: 640px) {
    .hero-visual {
        height: 50%;
        padding-top: 100px;
    }

    .orbital {
        width: 70%;
        height: 70%;
    }

    .ring {
        width: 180px;
        height: 180px;
    }

    .ring.secondary {
        width: 210px;
        height: 210px;
    }

    .logo-img2 {
        width: 160px;
        height: 160px;
    }

    .hero-actions {
        margin-top: 50px;
    }
}

/* =========================================================
   SEZIONI GENERICHE (FEATURES, ETC.)
========================================================= */

.section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    margin: 0 0 0.75rem;
    font-size: clamp(2.2rem, 5vw, 3rem);
    letter-spacing: -0.01em;
}

.section-header p {
    margin: 0 auto;
    max-width: 36rem;
    color: var(--color-muted);
}

.section-footer {
    margin-top: 3rem;
    text-align: center;
}

/* Link testuale di sezione (es: "Apri la pagina intera") */
.text-link {
    color: var(--color-muted);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    transition: color 0.3s ease, transform 0.3s ease;
}

.text-link:hover,
.text-link:focus-visible {
    color: var(--color-accent);
    transform: translateY(-2px);
}

/* =========================================================
   CARDS FUNZIONI (FEATURE-GRID)
========================================================= */

.feature-grid {
    display: grid;
    gap: 1.8rem;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.feature-grid--expanded {
    gap: 2rem;
}

.feature-card {
    padding: 2.2rem;
    border-radius: 1.6rem;
    background: var(--color-surface);
    border: 1px solid rgba(148, 163, 184, 0.14);
    box-shadow: var(--shadow-soft);
    transition: transform 0.3s ease, border 0.3s ease;
}

.feature-card:hover,
.feature-card:focus-within {
    transform: translateY(-6px);
    border-color: var(--color-accent);
}

.feature-card h3,
.feature-card h2 {
    margin: 0 0 0.75rem;
    font-size: 1.35rem;
}

.feature-card p {
    margin: 0;
    color: var(--color-muted);
}

/* Icona quadrata in alto alla card */
.icon-badge {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: rgba(59, 130, 246, 0.14);
    color: var(--color-accent);
    margin-bottom: 1.4rem;
    font-size: 1.3rem;
}

/* =========================================================
   SEZIONE COMANDI (TABELLA + FILTRI)
========================================================= */

.commands-section {
    padding-bottom: 6rem;
}

/* Card che contiene filtri + tabella */
.commands-card {
    border-radius: 1.8rem;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(148, 163, 184, 0.16);
    box-shadow: 0 40px 90px -60px rgba(15, 23, 42, 0.9);
    padding: clamp(1.8rem, 4vw, 2.6rem);
}

/* Barra di ricerca + select categorie */
.commands-toolbar {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 1.8rem;
}

/* Wrapper per campo label + input/select */
.field {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    min-width: min(280px, 100%);
}

/* Etichetta sopra i campi */
.field-label {
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.72rem;
    color: var(--color-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Input di ricerca */
.field input {
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, 0.26);
    background: rgba(15, 23, 42, 0.6);
    padding: 0.75rem 1.2rem;
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: border 0.3s ease, box-shadow 0.3s ease, transform 0.25s ease;
}

.field input:focus,
.field input:focus-visible {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.16);
    transform: translateY(-1px);
}

/* Rende la select larga come il campo */
.field .custom-select {
    width: 100%;
}

/* Wrapper con bordo / radius per la tabella */
.command-table-wrapper {
    border-radius: 1.2rem;
    overflow: hidden;
    border: 1px solid rgba(148, 163, 184, 0.12);
}

/* Tabella comandi */
.command-table {
    width: 100%;
    border-collapse: collapse;
}

.command-table thead {
    background: rgba(148, 163, 184, 0.08);
    text-align: left;
    font-size: 0.9rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.command-table th,
.command-table td {
    padding: 1.1rem 1.4rem;
    border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}

.command-table tbody tr:last-child td {
    border-bottom: none;
}

.command-table tbody tr {
    transition: background 0.3s ease;
}

.command-table tbody tr:hover {
    background: rgba(148, 163, 184, 0.06);
}

/* prima colonna: nome comando in bold */
.command-table td:nth-child(1) {
    font-weight: 600;
}

/* seconda colonna: categoria con accent */
.command-table td:nth-child(2) {
    color: var(--color-accent);
    font-weight: 500;
}

/* terza colonna: utilizzo in monospace */
.command-table td:nth-child(3) {
    color: var(--color-muted);
    font-family: "Fira Code", "Source Code Pro", Consolas, monospace;
}

/* =========================================================
   FOOTER / BOTTONE BACK TO TOP
========================================================= */

.site-footer {
    padding: 2.4rem 0;
    border-top: 1px solid rgba(148, 163, 184, 0.12);
    background: rgba(10, 19, 35, 0.8);
    animation: fade-in 0.9s ease both;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1.4rem;
    color: var(--color-muted);
}

.footer-title {
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin: 0 0 0.3rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--color-muted);
    transition: color 0.3s ease;
}

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

/* Floating "torna su" */
#back-to-top {
    position: fixed;
    right: 1.8rem;
    bottom: 1.8rem;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: none;
    background: var(--color-accent);
    color: #0f172a;
    display: grid;
    place-items: center;
    cursor: pointer;
    box-shadow: 0 22px 40px -25px var(--color-accent);
    transform: translateY(20px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}

/* Classe aggiunta da JS quando devi farlo comparire */
#back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* =========================================================
   PAGE HERO (PAGINE INTERNE)
========================================================= */

.page-hero {
    padding: 6rem 0 3rem;
}

.page-hero-content h1 {
    margin: 0 0 1rem;
    font-size: clamp(2.4rem, 5vw, 3.1rem);
}

.page-hero-content p {
    margin: 0;
    color: var(--color-muted);
    max-width: 40rem;
}

/* =========================================================
   REVEAL ANIMATIONS / KEYFRAMES
========================================================= */

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

/* aggiunta la classe .revealed via JS quando l'elemento entra in viewport */
.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =========================================================
   MEDIA QUERIES GLOBALI
========================================================= */

@media (max-width: 920px) {
    .nav-container {
        flex-wrap: wrap;
        justify-content: center;
    }

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

    .hero {
        padding-top: 5.5rem;
    }
}

@media (max-width: 640px) {
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-stats {
        flex-direction: column;
    }

    .commands-toolbar {
        flex-direction: column;
    }

    .field {
        width: 100%;
    }

    #back-to-top {
        right: 1.2rem;
        bottom: 1.2rem;
    }
}