/* ============================================
   GABRIELE MUSSO - Personal Website
   Cloud / DevOps focused visual system
   ============================================ */

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

:root {
  --bg: #eef3f7;
  --bg-grid: rgba(21, 94, 117, 0.08);
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --surface-dark: #07111f;
  --border: #d8e1e8;
  --border-hover: #98aebc;
  --text-primary: #08111f;
  --text-secondary: #425466;
  --text-muted: #758495;
  --accent: #0891b2;
  --accent-hover: #0e7490;
  --accent-soft: #dff7fb;
  --ops: #22c55e;
  --ops-soft: #dcfce7;
  --warn: #f59e0b;
  --header-bg: rgba(7, 17, 31, 0.92);
  --header-text: #f8fafc;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(8, 17, 31, 0.08), 0 8px 24px rgba(8, 17, 31, 0.05);
  --shadow-md: 0 18px 44px rgba(8, 17, 31, 0.13);
  --t: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --max-w: 980px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background:
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px),
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(135deg, #eef7f4 0%, #f7f8fb 48%, #eef4fb 100%);
  background-size: 44px 44px, 44px 44px, auto;
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  font-size: 1rem;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,0.16), rgba(255,255,255,0.72) 42%, rgba(255,255,255,0.35));
  z-index: -1;
}

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

header {
  background: var(--header-bg);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(125, 211, 252, 0.18);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-title {
  color: var(--header-text);
  font-size: 0.96rem;
  font-weight: 700;
  letter-spacing: 0;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.site-title::before {
  content: "";
  width: 0.58rem;
  height: 0.58rem;
  border-radius: 50%;
  background: var(--ops);
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.14), 0 0 18px rgba(34, 197, 94, 0.75);
}

.site-title:hover {
  color: var(--header-text);
  text-decoration: none;
}

nav.menu-desktop {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}

nav.menu-desktop a {
  color: rgba(248, 250, 252, 0.68);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 600;
  padding: 0.42rem 0.72rem;
  border-radius: var(--radius-sm);
  transition: color var(--t), background var(--t), box-shadow var(--t);
  white-space: nowrap;
}

nav.menu-desktop a:hover,
nav.menu-desktop a.active {
  color: var(--header-text);
  background: rgba(8, 145, 178, 0.2);
  box-shadow: inset 0 -1px 0 rgba(34, 197, 94, 0.45);
  text-decoration: none;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  cursor: pointer;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  padding: 7px;
  border-radius: var(--radius-sm);
  transition: background var(--t), border-color var(--t);
}

.hamburger:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.24);
}

.hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--header-text);
  border-radius: 2px;
  transition: transform var(--t), opacity var(--t);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(7, 17, 31, 0.58);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 110;
  opacity: 0;
  transition: opacity var(--t);
}

.nav-overlay.active {
  display: block;
  opacity: 1;
}

nav.menu-mobile {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(300px, 82vw);
  background: #07111f;
  z-index: 120;
  display: flex;
  flex-direction: column;
  padding: 5rem 1.25rem 2rem;
  gap: 0.35rem;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-left: 1px solid rgba(125, 211, 252, 0.18);
  overflow-y: auto;
}

nav.menu-mobile.active { transform: none; }

nav.menu-mobile a {
  color: rgba(248, 250, 252, 0.78);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.78rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: color var(--t), background var(--t);
}

nav.menu-mobile a:hover {
  color: var(--header-text);
  background: rgba(8, 145, 178, 0.18);
  text-decoration: none;
}

/* ============================================
   MAIN CONTENT
   ============================================ */

main {
  flex: 1;
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: 3rem 1.5rem 4.5rem;
  animation: fadeUp 0.45s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: 0;
}

.page-title {
  font-size: clamp(2rem, 5vw, 3.8rem);
  margin-bottom: 0.65rem;
}

.page-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  font-weight: 450;
  margin-bottom: 2rem;
  line-height: 1.6;
  max-width: 760px;
}

h2.section-title {
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #0e7490;
  margin-top: 2.75rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

h2.section-title::before {
  content: "";
  width: 1.8rem;
  height: 1px;
  background: linear-gradient(90deg, var(--ops), var(--accent));
}

h2.section-title:first-child { margin-top: 0; }

h3 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
}

p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

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

ul {
  padding-left: 1.35rem;
  margin-bottom: 0.75rem;
}

li {
  color: var(--text-secondary);
  margin-bottom: 0.32rem;
}

li:last-child { margin-bottom: 0; }

strong {
  color: var(--text-primary);
  font-weight: 750;
}

a {
  color: var(--accent-hover);
  text-decoration: none;
  font-weight: 650;
  transition: color var(--t);
}

a:hover {
  color: #075985;
  text-decoration: underline;
}

/* ============================================
   CARD COMPONENT
   ============================================ */

.card {
  background: var(--surface);
  border: 1px solid rgba(120, 144, 156, 0.28);
  border-left: 3px solid rgba(8, 145, 178, 0.72);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.5rem;
  margin-bottom: 0.9rem;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: box-shadow var(--t), border-color var(--t), transform var(--t), background var(--t);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(8, 145, 178, 0.44);
  background: var(--surface-strong);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}

.card-title {
  font-size: 1.04rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: 0;
}

.card-meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.card-body p,
.card-body li {
  font-size: 0.93rem;
}

/* ============================================
   BADGE
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
  border: 1px solid transparent;
}

.badge-green {
  background: var(--ops-soft);
  color: #166534;
  border-color: rgba(34, 197, 94, 0.24);
}

.badge-blue {
  background: var(--accent-soft);
  color: #155e75;
  border-color: rgba(8, 145, 178, 0.24);
}

.badge-yellow {
  background: #fef3c7;
  color: #92400e;
  border-color: rgba(245, 158, 11, 0.28);
}

.badge-gray {
  background: #eef2f7;
  color: #475569;
  border-color: rgba(100, 116, 139, 0.18);
}

.badge-orange {
  background: #ffedd5;
  color: #9a3412;
  border-color: rgba(249, 115, 22, 0.24);
}

/* ============================================
   INTRO HERO
   ============================================ */

.hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(7, 17, 31, 0.98), rgba(8, 47, 73, 0.96)),
    var(--surface-dark);
  border: 1px solid rgba(125, 211, 252, 0.24);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.7rem);
  margin-bottom: 2.1rem;
  box-shadow: 0 24px 60px rgba(8, 17, 31, 0.24);
  color: var(--header-text);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(125, 211, 252, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(125, 211, 252, 0.08) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(115deg, black, transparent 72%);
  pointer-events: none;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero .page-title {
  color: #f8fafc;
  max-width: 720px;
}

.hero .page-subtitle {
  color: rgba(226, 232, 240, 0.82);
  max-width: 720px;
  margin-bottom: 1.7rem;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: #a7f3d0;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.26);
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  margin-bottom: 1.1rem;
}

.hero-eyebrow::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--ops);
  box-shadow: 0 0 14px rgba(34, 197, 94, 0.85);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 0.72fr);
  gap: 1.5rem;
  align-items: end;
}

.hero-copy {
  min-width: 0;
}

.hero-stack {
  align-self: stretch;
  display: grid;
  align-content: end;
  gap: 0.8rem;
}

.signal-panel {
  background: rgba(3, 7, 18, 0.72);
  border: 1px solid rgba(125, 211, 252, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
}

.signal-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.52rem 0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
  font-size: 0.83rem;
}

.signal-row:last-child {
  border-bottom: 0;
}

.signal-label {
  color: rgba(203, 213, 225, 0.72);
  font-weight: 650;
}

.signal-value {
  color: #f8fafc;
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.78rem;
  text-align: right;
}

.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.stack-tag {
  display: inline-flex;
  align-items: center;
  color: #cffafe;
  background: rgba(8, 145, 178, 0.16);
  border: 1px solid rgba(125, 211, 252, 0.18);
  border-radius: var(--radius-sm);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.28rem 0.46rem;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.62rem;
  margin: 1.25rem 0 0;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(248, 250, 252, 0.08);
  border: 1px solid rgba(248, 250, 252, 0.16);
  color: #f8fafc !important;
  font-size: 0.875rem;
  font-weight: 750;
  padding: 0.48rem 0.95rem;
  border-radius: var(--radius-sm);
  text-decoration: none !important;
  transition: border-color var(--t), background var(--t), transform var(--t);
}

.social-link::after {
  content: ">";
  color: #67e8f9;
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.8rem;
}

.social-link:hover {
  border-color: rgba(34, 197, 94, 0.46);
  background: rgba(34, 197, 94, 0.12);
  transform: translateY(-1px);
  text-decoration: none !important;
}

.nav-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(205px, 1fr));
  gap: 0.85rem;
}

.nav-card {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid rgba(120, 144, 156, 0.3);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.25rem;
  text-decoration: none !important;
  display: flex;
  flex-direction: column;
  gap: 0.34rem;
  min-height: 116px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--t), border-color var(--t), transform var(--t), background var(--t);
}

.nav-card::before {
  content: "";
  width: 2rem;
  height: 3px;
  background: linear-gradient(90deg, var(--ops), var(--accent));
  border-radius: 999px;
  margin-bottom: 0.45rem;
}

.nav-card::after {
  content: ">";
  position: absolute;
  right: 1rem;
  bottom: 0.85rem;
  color: rgba(8, 145, 178, 0.42);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-weight: 900;
}

.nav-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(8, 145, 178, 0.46);
  background: var(--surface-strong);
  transform: translateY(-2px);
  text-decoration: none !important;
}

.nav-card-title {
  font-size: 0.98rem;
  font-weight: 850;
  color: var(--text-primary);
}

.nav-card-desc {
  font-size: 0.84rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.45;
  padding-right: 1rem;
}

/* ============================================
   RESOURCE LIST
   ============================================ */

.resource-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.65rem;
}

.resource-list li { margin: 0; }

.resource-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 54px;
  background: var(--surface);
  border: 1px solid rgba(120, 144, 156, 0.3);
  border-radius: var(--radius-md);
  padding: 0.72rem 0.92rem;
  font-size: 0.9rem;
  font-weight: 750;
  color: var(--text-primary) !important;
  text-decoration: none !important;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--t), border-color var(--t), transform var(--t), background var(--t);
}

.resource-list a::after {
  content: ">";
  color: rgba(8, 145, 178, 0.5);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  flex: 0 0 auto;
}

.resource-list a:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(8, 145, 178, 0.46);
  background: var(--surface-strong);
  transform: translateY(-2px);
  text-decoration: none !important;
}

/* ============================================
   HIGHLIGHT
   ============================================ */

.highlight {
  background: var(--accent-soft);
  color: #155e75;
  padding: 0.15em 0.45em;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.9em;
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  background: #07111f;
  color: rgba(248, 250, 252, 0.58);
  text-align: center;
  padding: 1.55rem;
  font-size: 0.85rem;
  border-top: 1px solid rgba(125, 211, 252, 0.14);
}

footer p {
  color: inherit;
}

/* ============================================
   LANGUAGE AND CV CONTROLS
   ============================================ */

.cv-download {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.32);
  color: #dcfce7;
  font-family: var(--font);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  padding: 0.34rem 0.72rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  flex-shrink: 0;
  line-height: 1;
  transition: color var(--t), border-color var(--t), background var(--t);
}

.cv-download:hover {
  color: #f8fafc;
  border-color: rgba(34, 197, 94, 0.58);
  background: rgba(34, 197, 94, 0.2);
  text-decoration: none;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid rgba(248, 250, 252, 0.2);
  color: rgba(248, 250, 252, 0.72);
  font-family: var(--font);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  padding: 0.34rem 0.62rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--t), border-color var(--t), background var(--t);
  flex-shrink: 0;
  line-height: 1;
}

.lang-toggle:hover {
  color: var(--header-text);
  border-color: rgba(125, 211, 252, 0.48);
  background: rgba(8, 145, 178, 0.12);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 760px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-stack {
    align-content: start;
  }
}

@media (max-width: 640px) {
  main {
    padding: 2rem 1rem 3rem;
  }

  .header-inner {
    padding: 0 1rem;
    gap: 0.55rem;
  }

  .site-title {
    font-size: 0.9rem;
  }

  .hero {
    padding: 1.35rem 1.15rem;
  }

  .card {
    padding: 1.1rem 1.15rem;
  }

  .cv-download {
    max-width: 118px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  nav.menu-desktop { display: none; }
  .hamburger { display: flex; }
}

@media (max-width: 430px) {
  .header-inner {
    gap: 0.42rem;
  }

  .cv-download {
    display: none;
  }

  .page-title {
    font-size: 2rem;
  }

  .signal-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.12rem;
  }

  .signal-value {
    text-align: left;
  }
}

@media (min-width: 641px) {
  nav.menu-mobile,
  .nav-overlay { display: none !important; }
}