/* ===============================================================
   du-pau - shared stylesheet
   Modern professional dark/blue theme
   =============================================================== */

:root {
  --bg:        #0b1120;
  --bg-alt:    #0f172a;
  --surface:   #131c31;
  --surface-2: #1a2540;
  --border:    #24304d;
  --text:      #e6ecff;
  --text-mut:  #93a1c4;
  --primary:   #3b82f6;
  --primary-2: #2563eb;
  --accent:    #22d3ee;
  --radius:    14px;
  --radius-sm: 9px;
  --shadow:    0 10px 30px rgba(2, 8, 23, 0.55);
  --maxw:      1120px;
  --font:      "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* radial glow backdrop */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60rem 40rem at 80% -10%, rgba(59,130,246,0.18), transparent 60%),
    radial-gradient(50rem 40rem at -10% 20%, rgba(34,211,238,0.10), transparent 55%);
}

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

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

h1, h2, h3 { line-height: 1.2; margin: 0 0 0.5em; }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); letter-spacing: -0.01em; }
p  { color: var(--text-mut); }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.section { padding: 5rem 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.lead { font-size: 1.15rem; color: var(--text-mut); max-width: 46ch; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--primary); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(11, 17, 32, 0.72);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
}
.brand:hover { text-decoration: none; }
.brand .logo { width: 32px; height: 32px; }
.brand span b { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--text-mut);
  font-weight: 500;
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
}
.nav-links a:hover { color: var(--text); background: var(--surface); text-decoration: none; }
.nav-links a.active { color: var(--text); background: var(--surface-2); }
.nav-links .btn { color: #fff; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.55rem;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 4px 0;
  transition: 0.25s;
}

/* ---------- Hero ---------- */
.hero { padding: 5.5rem 0 4.5rem; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}
.hero p.lead { margin: 1.25rem 0 2rem; }
.hero-actions { display: flex; gap: 0.9rem; flex-wrap: wrap; }
.hero-badges {
  display: flex;
  gap: 1.5rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}
.hero-badges div { }
.hero-badges strong { display: block; font-size: 1.5rem; color: var(--text); }
.hero-badges span { font-size: 0.85rem; color: var(--text-mut); }

.hero-visual {
  background: linear-gradient(160deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}
.hero-visual ul { list-style: none; margin: 0; padding: 0; }
.hero-visual li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--border);
  color: var(--text);
}
.hero-visual li:last-child { border-bottom: none; }
.hero-visual li::before {
  content: "";
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  flex: none;
}

/* ---------- Cards / Grid ---------- */
.grid { display: grid; gap: 1.5rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--primary); }
.card .icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(59,130,246,0.25), rgba(34,211,238,0.18));
  border: 1px solid var(--border);
  margin-bottom: 1rem;
}
.card .icon svg { width: 26px; height: 26px; stroke: var(--accent); }
.card h3 { color: var(--text); }
.card p { margin: 0; }

.section-head { text-align: center; max-width: 60ch; margin: 0 auto 3rem; }
.section-head p { margin: 0.5rem auto 0; }

/* feature list */
.feature-list { list-style: none; margin: 1rem 0 0; padding: 0; }
.feature-list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.6rem;
  color: var(--text-mut);
}
.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* service detail block */
.service-block {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1.25rem;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.service-block + .service-block { margin-top: 1.5rem; }
.service-block .icon {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(59,130,246,0.25), rgba(34,211,238,0.18));
  border: 1px solid var(--border);
}
.service-block .icon svg { width: 30px; height: 30px; stroke: var(--accent); }
.service-block h3 { color: var(--text); }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--primary-2), #0ea5b7);
  border-radius: var(--radius);
  padding: 3rem;
  text-align: center;
  box-shadow: var(--shadow);
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.85); margin-bottom: 1.5rem; }
.cta-band .btn-primary { background: #fff; color: var(--primary-2); box-shadow: none; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero { padding: 4rem 0 2rem; text-align: center; }
.page-hero p { max-width: 55ch; margin-inline: auto; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}
.info-item {
  display: flex;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
}
.info-item:last-child { border-bottom: none; }
.info-item .icon { color: var(--accent); }
.info-item h4 { margin: 0 0 0.2rem; color: var(--text); }
.info-item p { margin: 0; }

form.contact-form { display: grid; gap: 1.1rem; }
.field { display: grid; gap: 0.4rem; }
.field label { font-size: 0.9rem; color: var(--text); font-weight: 600; }
.field input,
.field textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.25);
}
.field textarea { resize: vertical; min-height: 140px; }
.form-note { font-size: 0.85rem; color: var(--text-mut); }
.form-status { font-size: 0.95rem; padding: 0.5rem 0; min-height: 1.5rem; }
.form-status.ok { color: #4ade80; }
.form-status.err { color: #f87171; }

/* ---------- Values grid ---------- */
.about-lead-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 2.5rem 0;
  margin-top: 2rem;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-grid p { margin: 0; font-size: 0.9rem; }
.footer-links { display: flex; gap: 1.25rem; list-style: none; margin: 0; padding: 0; }
.footer-links a { color: var(--text-mut); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-lead-grid { grid-template-columns: 1fr; }

  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.25rem 1.5rem;
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.28s ease, opacity 0.28s ease;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 0.75rem 0.85rem; }
  .nav-links .btn { justify-content: center; }
}

@media (max-width: 560px) {
  .section { padding: 3.5rem 0; }
  .cta-band, .service-block { padding: 1.75rem; }
  .service-block { grid-template-columns: 1fr; }
}