/* ==========================================================================
   A Plus Drains — Site Stylesheet
   Palette: white / navy / gray / muted blue
   ========================================================================== */

:root {
  --navy: #0b2545;
  --navy-2: #13315c;
  --blue: #3a6ea5;
  --blue-soft: #e6eef7;
  --gray-900: #1f2937;
  --gray-700: #374151;
  --gray-500: #6b7280;
  --gray-300: #d1d5db;
  --gray-100: #f3f4f6;
  --gray-50:  #f8fafc;
  --white: #ffffff;
  --shadow: 0 6px 18px rgba(11, 37, 69, 0.08);
  --radius: 8px;
  --max: 1140px;
  --font: 'Helvetica Neue', Arial, 'Segoe UI', Roboto, system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, h4 {
  font-weight: 700;
  color: var(--navy);
  line-height: 1.25;
  margin: 0 0 .6em;
}
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: 1.15rem; }
p  { margin: 0 0 1em; color: var(--gray-700); }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Top bar ---------- */
.topbar {
  background: var(--navy);
  color: #cbd5e1;
  font-size: .87rem;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
  padding-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}
.topbar a { color: #ffffff; }
.topbar .tb-item + .tb-item { margin-left: 18px; }

/* ---------- Header / Nav ---------- */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-100);
  position: sticky; top: 0; z-index: 50;
}
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; color: var(--navy);
  font-size: 1.15rem; letter-spacing: .2px;
}
.brand img { width: 32px; height: 32px; }
.brand small { display:block; font-weight: 500; color: var(--gray-500); font-size: .72rem; letter-spacing: .5px; text-transform: uppercase; }

.nav-links {
  list-style: none;
  display: flex; gap: 22px;
  margin: 0; padding: 0;
}
.nav-links a {
  color: var(--gray-900);
  font-weight: 600;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--navy);
  border-bottom-color: var(--blue);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none; border: 1px solid var(--gray-300);
  border-radius: 6px; padding: 6px 10px; cursor: pointer;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--navy);
  margin: 4px 0;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .98rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .05s ease, background .2s ease, color .2s ease;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-2); text-decoration: none; }
.btn-outline { background: transparent; color: #fff; border-color: #fff; }
.btn-outline:hover { background: #fff; color: var(--navy); text-decoration: none; }
.btn-dark-outline { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-dark-outline:hover { background: var(--navy); color: #fff; text-decoration: none; }
.btn:active { transform: translateY(1px); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: linear-gradient(rgba(11, 37, 69, .72), rgba(11, 37, 69, .72)),
              url('../images/hero.jpg') center/cover no-repeat;
  color: #fff;
  padding: 90px 0;
}
.hero h1 { color: #fff; max-width: 780px; }
.hero p.lead {
  font-size: 1.1rem;
  max-width: 640px;
  color: #e5edf6;
}
.hero .cta-row {
  display: flex; flex-wrap: wrap; gap: 14px;
  margin-top: 22px;
}

/* ---------- Sections ---------- */
section { padding: 64px 0; }
.section-light { background: var(--gray-50); }
.section-title { text-align: center; margin-bottom: 36px; }
.section-title p { color: var(--gray-500); max-width: 640px; margin: 0 auto; }

/* ---------- Service cards ---------- */
.grid {
  display: grid;
  gap: 22px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform .15s ease;
}
.card:hover { transform: translateY(-2px); }
.card .icon {
  width: 44px; height: 44px;
  background: var(--blue-soft);
  color: var(--navy);
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.1rem;
  margin-bottom: 12px;
}
.card h3 { margin-bottom: 8px; }
.card p { color: var(--gray-700); font-size: .96rem; margin: 0; }

/* ---------- Why-choose / Feature blocks ---------- */
.feature {
  display: grid; grid-template-columns: 80px 1fr; gap: 16px; align-items: start;
  padding: 14px 0;
}
.feature .num {
  width: 56px; height: 56px;
  background: var(--navy); color: #fff;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.1rem;
}
.feature h3 { margin: 0 0 4px; }
.feature p { margin: 0; }

/* ---------- Split (image + text) ---------- */
.split {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 40px; align-items: center;
}
.split img { border-radius: var(--radius); box-shadow: var(--shadow); }

/* ---------- Service area / chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 12px; }
.chip {
  background: var(--white);
  border: 1px solid var(--gray-300);
  color: var(--navy);
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600; font-size: .92rem;
}

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--navy);
  color: #fff;
  text-align: center;
  padding: 50px 20px;
}
.cta-banner h2 { color: #fff; }
.cta-banner p  { color: #cbd5e1; max-width: 640px; margin: 0 auto 20px; }

/* ---------- Service detail blocks ---------- */
.service-block {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: start;
  padding: 28px 0;
  border-bottom: 1px solid var(--gray-100);
}
.service-block:last-child { border-bottom: 0; }
.service-block img { border-radius: var(--radius); box-shadow: var(--shadow); }
.service-block h2 { margin-top: 0; font-size: 1.4rem; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.info-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 22px;
}
.info-box h3 { margin-top: 0; }
.info-box dl { margin: 0; }
.info-box dt { font-weight: 700; color: var(--navy); margin-top: 10px; }
.info-box dd { margin: 0; color: var(--gray-700); }

form .field { margin-bottom: 14px; }
form label {
  display: block; font-weight: 600; color: var(--navy);
  margin-bottom: 6px; font-size: .92rem;
}
form input, form textarea, form select {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font: inherit;
  background: #fff;
  color: var(--gray-900);
}
form input:focus, form textarea:focus, form select:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(58, 110, 165, .15);
}
.form-msg { font-size: .92rem; margin-top: 8px; }
.form-msg.ok { color: #166534; }
.form-msg.err { color: #b91c1c; }

.map-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-100);
}
.map-wrap iframe { width: 100%; height: 360px; border: 0; display: block; }

/* ---------- Footer ---------- */
.site-footer {
  background: #081a30;
  color: #cbd5e1;
  padding: 40px 0 18px;
  font-size: .92rem;
}
.site-footer a { color: #fff; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 28px;
}
.site-footer h4 {
  color: #fff; font-size: 1rem; margin: 0 0 12px;
  text-transform: uppercase; letter-spacing: .5px;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 6px; }
.copy {
  border-top: 1px solid #14304f;
  margin-top: 28px; padding-top: 16px;
  text-align: center; color: #94a3b8;
}

/* ---------- Page header (inner pages) ---------- */
.page-header {
  background: linear-gradient(rgba(11, 37, 69, .85), rgba(11, 37, 69, .85)),
              url('../images/hero.jpg') center/cover no-repeat;
  color: #fff;
  padding: 60px 0;
  text-align: center;
}
.page-header h1 { color: #fff; margin-bottom: 6px; }
.page-header p  { color: #cbd5e1; margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .split  { grid-template-columns: 1fr; }
  .service-block { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: absolute; top: 64px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--gray-100);
    padding: 8px 20px 16px;
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    display: block; padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
  }
  .nav-toggle { display: inline-block; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .topbar .tb-item + .tb-item { margin-left: 0; }
  .topbar .container { justify-content: center; text-align: center; }
  .hero { padding: 60px 0; }
  section { padding: 48px 0; }
}