/* ============================================
   SST - Studio Servizi Tecnici
   Restyling completo 2026
   ============================================ */

:root {
  --primary: #0A2540;
  --primary-light: #1a3a5c;
  --accent: #E85D04;
  --accent-hover: #c44d03;
  --text: #1e293b;
  --text-light: #64748b;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.06);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 12px;
  --transition: all 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== HEADER ========== */
.header {
  background: var(--primary);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: var(--accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: #fff;
}

.logo span {
  display: block;
  font-size: 0.7rem;
  font-weight: 400;
  opacity: 0.85;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav a {
  color: rgba(255,255,255,0.9);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
}

.nav a:hover,
.nav a.active {
  background: rgba(255,255,255,0.12);
  color: #fff;
}

.nav a.active {
  background: var(--accent);
}

/* Mobile menu button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle svg {
  width: 28px;
  height: 28px;
}

/* ========== HERO ========== */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  padding: 80px 0 90px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -50px;
  right: -50px;
  width: 300px;
  height: 300px;
  background: var(--accent);
  opacity: 0.15;
  border-radius: 50%;
}

.hero-content {
  max-width: 700px;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.9;
  margin-bottom: 32px;
  line-height: 1.7;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.4);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  color: #fff;
}

/* ========== SECTIONS ========== */
.section {
  padding: 70px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--text-light);
  font-size: 1.1rem;
  max-width: 600px;
  margin-bottom: 40px;
}

/* ========== CARDS ========== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.card-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--accent), #f48c06);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: #fff;
  font-size: 1.4rem;
}

.card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.card p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.65;
}

.card a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-weight: 600;
  font-size: 0.95rem;
}

/* ========== CONTENT PAGES ========== */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  padding: 50px 0 55px;
}

.page-header h1 {
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-header p {
  opacity: 0.85;
  margin-top: 8px;
  font-size: 1.05rem;
}

.content-block {
  max-width: 800px;
}

.content-block h2 {
  font-size: 1.45rem;
  color: var(--primary);
  margin: 36px 0 14px;
  font-weight: 700;
}

.content-block h2:first-child {
  margin-top: 0;
}

.content-block p {
  margin-bottom: 16px;
  color: var(--text);
  line-height: 1.75;
}

.content-block ul {
  margin: 12px 0 20px 0;
}

.content-block ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: var(--text);
}

.content-block ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}

/* ========== TEAM ========== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.team-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  box-shadow: var(--shadow);
}

.team-avatar {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.6rem;
  font-weight: 700;
}

.team-card h3 {
  font-size: 1.15rem;
  color: var(--primary);
  margin-bottom: 4px;
}

.team-card .role {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.team-card a {
  font-size: 0.9rem;
}

/* ========== CONTACT ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-item .icon {
  width: 44px;
  height: 44px;
  background: var(--bg-alt);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
  font-size: 1.2rem;
}

.contact-item h4 {
  font-size: 0.95rem;
  color: var(--text-light);
  font-weight: 500;
  margin-bottom: 2px;
}

.contact-item p,
.contact-item a {
  color: var(--primary);
  font-weight: 600;
  font-size: 1.05rem;
}

.contact-form {
  background: var(--bg-alt);
  padding: 32px;
  border-radius: var(--radius);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
  background: #fff;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(232, 93, 4, 0.15);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* ========== FOOTER ========== */
.footer {
  background: var(--primary);
  color: rgba(255,255,255,0.85);
  padding: 50px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer h4 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 16px;
  font-weight: 700;
}

.footer p {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 8px;
}

.footer a {
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
}

.footer a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.875rem;
}

/* ========== UTILITIES ========== */
.text-center { text-align: center; }
.mt-4 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1.5rem; }

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 12px 16px;
    width: 100%;
  }

  .menu-toggle {
    display: block;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 50px 0 60px;
  }

  .section {
    padding: 50px 0;
  }

  .logo span {
    display: none;
  }
}