/* =================================================================
   ISO TECH — style.css  (index.html)
   ================================================================= */

/* ── 1. VARIABILI ─────────────────────────────────────────────── */
:root {
  --color-primary:       #0047AB;
  --color-primary-light: #1A66D4;
  --color-primary-glow:  rgba(0, 71, 171, 0.3);
  --color-bg:            #050505;
  --color-text:          #F5F5F5;
  --color-surface:       #0D0D0D;
  --color-border:        rgba(0, 71, 171, 0.25);
  --font-sans:           'Inter', system-ui, -apple-system, sans-serif;
  --transition:          0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── 2. RESET BASE ────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin:     0;
  padding:    0;
}

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

body {
  font-family:            var(--font-sans);
  background-color:       var(--color-bg);
  color:                  var(--color-text);
  line-height:            1.5;
  -webkit-font-smoothing: antialiased;
  min-height:             100dvh;
}

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

ul, ol        { list-style: none; }
a             { color: inherit; text-decoration: none; }
button, input { font: inherit; border: none; background: none; cursor: pointer; }

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

:focus-visible {
  outline:        2px solid var(--color-primary);
  outline-offset: 3px;
}

/* ── 3. HOVER TRANSITION GLOBALE ──────────────────────────────── */
a, button, [role="button"], .card {
  transition: color            var(--transition),
              background-color var(--transition),
              border-color     var(--transition),
              box-shadow       var(--transition),
              transform        var(--transition);
}

/* ── 4. FLEXBOX UTILITIES ─────────────────────────────────────── */
.flex         { display: flex; }
.inline-flex  { display: inline-flex; }
.flex-col     { flex-direction: column; }
.flex-wrap    { flex-wrap: wrap; }
.flex-1       { flex: 1 1 0%; }
.flex-none    { flex: none; }

.justify-start   { justify-content: flex-start; }
.justify-end     { justify-content: flex-end; }
.justify-center  { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-evenly  { justify-content: space-evenly; }

.items-start   { align-items: flex-start; }
.items-end     { align-items: flex-end; }
.items-center  { align-items: center; }
.items-stretch { align-items: stretch; }

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

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

/* ── 5. GRID UTILITIES ────────────────────────────────────────── */
.grid        { display: grid; }
.inline-grid { display: inline-grid; }

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.grid-auto  { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.col-span-2 { grid-column: span 2 / span 2; }
.col-span-3 { grid-column: span 3 / span 3; }
.col-full   { grid-column: 1 / -1; }

.place-center { place-items: center; }

/* ── 6. RESPONSIVE UTILITIES ──────────────────────────────────── */
@media (max-width: 768px) {
  .md\:flex-col    { flex-direction: column; }
  .md\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .md\:hidden      { display: none; }
}

@media (max-width: 480px) {
  .sm\:flex-col    { flex-direction: column; }
  .sm\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration:  0.01ms !important;
  }
}

/* ==================================================================
   NAVBAR
================================================================== */
.navbar {
  position:        sticky;
  top:             0;
  z-index:         100;
  width:           100%;
  padding:         0 2rem;
  height:          64px;
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  background:      rgba(5, 5, 5, 0.65);
  backdrop-filter: blur(18px) saturate(1.6);
  -webkit-backdrop-filter: blur(18px) saturate(1.6);
  border-bottom:   1px solid rgba(0, 71, 171, 0.18);
  transition:      background var(--transition), border-color var(--transition);
}

.navbar.scrolled {
  background:   rgba(5, 5, 5, 0.9);
  border-color: rgba(0, 71, 171, 0.35);
}

.navbar__logo {
  font-size:      1.2rem;
  font-weight:    900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color:          var(--color-primary-light);
  flex-shrink:    0;
  transition:     color var(--transition), text-shadow var(--transition);
}

.navbar__logo:hover {
  color:       var(--color-text);
  text-shadow: 0 0 20px var(--color-primary-glow);
}

.navbar__logo::after {
  content:        '';
  display:        inline-block;
  width:          5px;
  height:         5px;
  border-radius:  50%;
  background:     var(--color-primary);
  box-shadow:     0 0 6px var(--color-primary);
  margin-left:    4px;
  vertical-align: middle;
  position:       relative;
  top:            -1px;
}

.navbar__links {
  display:      flex;
  align-items:  center;
  gap:          0.25rem;
  list-style:   none;
  position:     absolute;
  left:         50%;
  transform:    translateX(-50%);
}

.navbar__links a {
  padding:        0.45rem 0.9rem;
  font-size:      0.8125rem;
  font-weight:    500;
  letter-spacing: 0.04em;
  color:          rgba(245, 245, 245, 0.6);
  border-radius:  6px;
  position:       relative;
  transition:     color var(--transition), background var(--transition);
}

.navbar__links a::after {
  content:          '';
  position:         absolute;
  bottom:           4px;
  left:             50%;
  transform:        translateX(-50%) scaleX(0);
  width:            calc(100% - 1.8rem);
  height:           1px;
  background:       var(--color-primary-light);
  border-radius:    2px;
  transition:       transform var(--transition);
  transform-origin: center;
}

.navbar__links a:hover,
.navbar__links a.active { color: var(--color-text); }

.navbar__links a:hover { background: rgba(0, 71, 171, 0.08); }

.navbar__links a:hover::after,
.navbar__links a.active::after { transform: translateX(-50%) scaleX(1); }

.navbar__cta {
  white-space:     nowrap;
  flex-shrink:     0;
  display:         inline-flex;
  align-items:     center;
  gap:             0.4rem;
  padding:         0.45rem 1.1rem;
  font-size:       0.8125rem;
  font-weight:     600;
  letter-spacing:  0.06em;
  text-transform:  uppercase;
  color:           var(--color-primary-light);
  border:          1px solid var(--color-primary);
  border-radius:   6px;
  background:      transparent;
  cursor:          pointer;
  transition:      color var(--transition), background var(--transition),
                   border-color var(--transition), box-shadow var(--transition),
                   transform var(--transition);
}

.navbar__cta:hover {
  color:        var(--color-text);
  background:   var(--color-primary);
  border-color: var(--color-primary-light);
  box-shadow:   0 0 20px var(--color-primary-glow),
                0 0 60px rgba(0, 71, 171, 0.12);
  transform:    translateY(-1px);
}

.navbar__cta:active { transform: translateY(0); }

.navbar__cta svg {
  width:       13px;
  height:      13px;
  flex-shrink: 0;
  transition:  transform var(--transition);
}
.navbar__cta:hover svg { transform: translateX(3px); }

.navbar__hamburger {
  display:         none;
  flex-direction:  column;
  justify-content: center;
  gap:             5px;
  width:           36px;
  height:          36px;
  padding:         6px;
  border-radius:   6px;
  cursor:          pointer;
  background:      transparent;
  border:          none;
  transition:      background var(--transition);
}

.navbar__hamburger:hover { background: rgba(0, 71, 171, 0.1); }

.navbar__hamburger span {
  display:          block;
  width:            100%;
  height:           1.5px;
  background:       var(--color-text);
  border-radius:    2px;
  transform-origin: center;
  transition:       transform var(--transition), opacity var(--transition);
}

.navbar__hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.navbar__hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.navbar__hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.navbar__mobile {
  display:         none;
  position:        fixed;
  top:             64px;
  left:            0;
  right:           0;
  padding:         1rem 1.5rem 1.5rem;
  background:      rgba(5, 5, 5, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom:   1px solid var(--color-border);
  flex-direction:  column;
  gap:             0.25rem;
  opacity:         0;
  transform:       translateY(-8px);
  pointer-events:  none;
  transition:      opacity var(--transition), transform var(--transition);
  z-index:         99;
}

.navbar__mobile.open {
  display:        flex;
  opacity:        1;
  transform:      translateY(0);
  pointer-events: auto;
}

.navbar__mobile a {
  padding:       0.75rem 1rem;
  font-size:     0.9375rem;
  font-weight:   500;
  color:         rgba(245, 245, 245, 0.65);
  border-radius: 6px;
  transition:    color var(--transition), background var(--transition);
}

.navbar__mobile a:hover {
  color:      var(--color-text);
  background: rgba(0, 71, 171, 0.1);
}

.navbar__mobile .navbar__cta {
  margin-top:      0.75rem;
  width:           100%;
  justify-content: center;
}

/* FIX 2+3: media query — nasconde navbar desktop ma ripristina CTA nel menu mobile */
@media (max-width: 768px) {
  .navbar__links,
  .navbar__cta       { display: none; }
  .navbar__hamburger { display: flex; }

  /* CTA nel menu mobile sempre visibile */
  .navbar__mobile .navbar__cta { display: inline-flex; }
}

/* ==================================================================
   DEMO HERO
================================================================== */
.demo-hero {
  display:         flex;
  flex-direction:  column;
  align-items:     center;
  justify-content: center;
  padding:         8rem 2rem 4rem;
  text-align:      center;
  gap:             1rem;
}

.demo-hero h1 {
  font-size:      clamp(2rem, 6vw, 4rem);
  font-weight:    900;
  letter-spacing: -0.03em;
  background:     linear-gradient(135deg, #F5F5F5 30%, #0047AB);
  -webkit-background-clip: text;
  background-clip:         text;
  -webkit-text-fill-color: transparent;
}

.demo-hero p {
  color:       rgba(245, 245, 245, 0.45);
  font-size:   0.9375rem;
  max-width:   380px;
  line-height: 1.6;
}

/* ==================================================================
   STACK TECNOLOGICO
================================================================== */
.tech-stack {
  padding:   6rem 2rem;
  max-width: 1200px;
  margin:    0 auto;
}

.tech-stack__header {
  text-align:    center;
  margin-bottom: 3.5rem;
}

.tech-stack__eyebrow {
  display:        inline-block;
  font-size:      0.6875rem;
  font-weight:    600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color:          var(--color-primary-light);
  margin-bottom:  0.75rem;
  position:       relative;
  padding:        0 1.5rem;
}

.tech-stack__eyebrow::before,
.tech-stack__eyebrow::after {
  content:    '';
  position:   absolute;
  top:        50%;
  width:      36px;
  height:     1px;
  background: linear-gradient(90deg, transparent, var(--color-primary));
}
.tech-stack__eyebrow::before { right: calc(100% - 1.5rem); transform: rotate(180deg); }
.tech-stack__eyebrow::after  { left:  calc(100% - 1.5rem); }

.tech-stack__title {
  font-size:      clamp(1.75rem, 4vw, 2.5rem);
  font-weight:    800;
  letter-spacing: -0.03em;
  line-height:    1.15;
  color:          var(--color-text);
}

.tech-stack__title .highlight {
  background:              linear-gradient(135deg, var(--color-primary-light), #00CFFF);
  -webkit-background-clip: text;
  background-clip:         text;
  -webkit-text-fill-color: transparent;
}

.tech-stack__subtitle {
  margin-top:    0.75rem;
  font-size:     0.9375rem;
  color:         rgba(245, 245, 245, 0.4);
  max-width:     420px;
  margin-left:   auto;
  margin-right:  auto;
  line-height:   1.6;
}

.tech-stack__grid {
  display:               grid;
  grid-template-columns: repeat(4, 1fr);
  gap:                   1rem;
  list-style:            none;
}

.tech-card {
  position:       relative;
  background:     var(--color-surface);
  border:         1px solid rgba(245, 245, 245, 0.06);
  border-radius:  12px;
  padding:        1.75rem 1.25rem 1.5rem;
  display:        flex;
  flex-direction: column;
  align-items:    center;
  gap:            1rem;
  overflow:       hidden;
  transition:     border-color var(--transition),
                  box-shadow   var(--transition),
                  transform    var(--transition),
                  background   var(--transition);
}

.tech-card::before {
  content:        '';
  position:       absolute;
  inset:          0;
  background:     radial-gradient(circle at 50% 0%, rgba(0, 71, 171, 0.12), transparent 70%);
  opacity:        0;
  transition:     opacity var(--transition);
  border-radius:  inherit;
  pointer-events: none;
}

.tech-card::after {
  content:    '';
  position:   absolute;
  top:        0;
  left:       20%;
  width:      60%;
  height:     1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity:    0;
  transition: opacity var(--transition);
}

.tech-card:hover {
  border-color: var(--color-primary);
  background:   #0e1520;
  box-shadow:   0 0 0 1px rgba(0, 71, 171, 0.2),
                0 8px 32px rgba(0, 0, 0, 0.5),
                0 0 40px rgba(0, 71, 171, 0.08);
  transform:    translateY(-4px);
}

.tech-card:hover::before,
.tech-card:hover::after { opacity: 1; }

.tech-card__logo {
  width:           56px;
  height:          56px;
  display:         flex;
  align-items:     center;
  justify-content: center;
  border-radius:   12px;
  background:      rgba(0, 71, 171, 0.1);
  border:          1px solid rgba(0, 71, 171, 0.2);
  padding:         10px;
  flex-shrink:     0;
  transition:      background var(--transition), border-color var(--transition),
                   box-shadow  var(--transition);
}

.tech-card:hover .tech-card__logo {
  background:   rgba(0, 71, 171, 0.18);
  border-color: rgba(0, 71, 171, 0.4);
  box-shadow:   0 0 16px rgba(0, 71, 171, 0.3);
}

.tech-card__logo img {
  width:      100%;
  height:     100%;
  object-fit: contain;
  filter:     invert(30%) sepia(90%) saturate(1200%) hue-rotate(200deg) brightness(110%) contrast(105%);
  opacity:    0.9;
  transition: filter var(--transition), opacity var(--transition), transform var(--transition);
}

.tech-card:hover .tech-card__logo img {
  filter:    brightness(0) invert(1);
  opacity:   1;
  transform: scale(1.1);
}

.tech-card__body {
  text-align:     center;
  display:        flex;
  flex-direction: column;
  gap:            0.3rem;
}

.tech-card__name {
  font-size:      0.875rem;
  font-weight:    600;
  letter-spacing: 0.02em;
  color:          var(--color-text);
  transition:     color var(--transition);
}
.tech-card:hover .tech-card__name { color: #fff; }

.tech-card__desc {
  font-size:   0.75rem;
  color:       rgba(245, 245, 245, 0.35);
  line-height: 1.5;
  transition:  color var(--transition);
}
.tech-card:hover .tech-card__desc { color: rgba(245, 245, 245, 0.65); }

.tech-card__badge {
  font-size:      0.625rem;
  font-weight:    600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color:          var(--color-primary-light);
  background:     rgba(0, 71, 171, 0.12);
  border:         1px solid rgba(0, 71, 171, 0.2);
  border-radius:  99px;
  padding:        2px 8px;
  transition:     background var(--transition), border-color var(--transition),
                  box-shadow  var(--transition);
}

.tech-card:hover .tech-card__badge {
  background:   rgba(0, 71, 171, 0.22);
  border-color: rgba(0, 71, 171, 0.45);
  box-shadow:   0 0 10px rgba(0, 71, 171, 0.25);
}

@media (max-width: 768px) {
  .tech-stack       { padding: 4rem 1.5rem; }
  .tech-stack__grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
}

@media (max-width: 400px) {
  .tech-stack__grid { gap: 0.5rem; }
  .tech-card        { padding: 1.25rem 0.75rem 1rem; }
}

/* ==================================================================
   FOOTER
   FIX: tag <footer> width:100% + griglia 3 colonne (logo | links | copy)
   identica alla navbar per simmetria perfetta
================================================================== */

/* FIX: il tag <footer> deve occupare tutta la larghezza come il <header> */
footer {
  width:      100%;
  border-top: 1px solid rgba(0, 71, 171, 0.12);
}

/* FIX: griglia 3 colonne uguali — logo sinistra, link centro, copyright destra */
.site-footer {
  padding:               2.5rem 2rem;
  display:               grid;
  grid-template-columns: 1fr auto 1fr;
  align-items:           center;
  gap:                   1rem;
  max-width:             1200px;
  margin:                0 auto;
  width:                 100%;
}

.site-footer__logo {
  font-size:      1rem;
  font-weight:    900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color:          var(--color-primary-light);
  justify-self:   start;
}

.site-footer__logo::after {
  content:        '';
  display:        inline-block;
  width:          5px;
  height:         5px;
  border-radius:  50%;
  background:     var(--color-primary);
  box-shadow:     0 0 6px var(--color-primary);
  margin-left:    4px;
  vertical-align: middle;
  position:       relative;
  top:            -1px;
}

.site-footer__links {
  display:      flex;
  gap:          1.5rem;
  list-style:   none;
  padding-left: 0;
  justify-self: center;
}

.site-footer__links a {
  font-size:   0.8125rem;
  font-weight: 500;
  color:       rgba(245, 245, 245, 0.4);
  transition:  color var(--transition);
}

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

.site-footer__copy {
  font-size:    0.75rem;
  color:        rgba(245, 245, 245, 0.25);
  justify-self: end;
  text-align:   right;
}

@media (max-width: 600px) {
  .site-footer {
    grid-template-columns: 1fr;
    justify-items:         center;
    text-align:            center;
  }
  .site-footer__logo { justify-self: center; }
  .site-footer__copy { justify-self: center; text-align: center; }
  .site-footer__links {
    justify-content: center;
    flex-wrap:       wrap;
  }
}
/* --- ANIMAZIONE HERO ISO TECH (INTER FONT) --- */

.demo-hero {
    padding-top: 80px !important;
    padding-bottom: 40px !important;
    text-align: center;
}

.tech-reveal {
    font-family: 'Inter', sans-serif !important;
    font-size: 4rem !important; /* Dimensione originale bilanciata */
    font-weight: 700 !important; /* Peso originale */
    line-height: 1.1;
    color: #ffffff !important;
    text-transform: none !important; /* Mantiene le minuscole per eleganza */
    margin-bottom: 15px !important;
    
    /* Stato iniziale per l'animazione */
    opacity: 0;
    filter: blur(10px) brightness(2);
    transform: translateY(20px);
    
    /* Attivazione animazione */
    animation: apparizioneInter 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards !important;
}

.blue-highlight {
    color: #007bff !important; /* Il blu del tuo logo */
}

.hero-subtitle {
    font-family: 'Inter', sans-serif !important;
    font-size: 1.2rem !important;
    color: #888888 !important;
    opacity: 0;
    /* Appare con mezzo secondo di ritardo */
    animation: apparizioneInter 1s ease-out 0.5s forwards !important;
}

/* --- MOTORE DELL'ANIMAZIONE (REVEAL TECH) --- */
@keyframes apparizioneInter {
    to {
        opacity: 1;
        filter: blur(0) brightness(1);
        transform: translateY(0);
    }
}

/* Ottimizzazione per Mobile */
@media (max-width: 768px) {
    .tech-reveal {
        font-size: 2.8rem !important;
    }
}