/* ============================================================
   NCS Cleans – styles.css
   Color palette:
     --teal:     #1A8C8C   (brand primary)
     --teal-dk:  #136868   (hover)
     --navy:     #0D2B3E   (headings / dark bg)
     --white:    #FFFFFF
     --off-white:#F5F8F8
     --gray:     #6B7280
     --light-gray:#E5E7EB
============================================================ */

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --teal: #1A8C8C;
  --teal-dk: #136868;
  --navy: #0D2B3E;
  --white: #ffffff;
  --off-white: #F5F8F8;
  --gray: #6B7280;
  --light-gray: #E5E7EB;
  --radius: 8px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --transition: 0.25s ease;
  --max-width: 1140px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Open Sans', sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--navy);
  background: var(--white);
}

img { max-width: 100%; display: block; }
a { color: var(--teal); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--teal-dk); }
ul { list-style: none; }
h1, h2, h3 { font-family: 'Montserrat', sans-serif; line-height: 1.2; }

/* ===== UTILITY ===== */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin-inline: auto;
}

.section { padding: 88px 0; }
.section-alt { background: var(--off-white); }

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 16px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--gray);
  max-width: 640px;
  margin-bottom: 48px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: 'Montserrat', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  border: 2px solid transparent;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--teal);
  color: var(--white);
  border-color: var(--teal);
}
.btn-primary:hover {
  background: var(--teal-dk);
  border-color: var(--teal-dk);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn-outline:hover {
  background: var(--white);
  color: var(--teal);
  transform: translateY(-2px);
}

.btn-nav {
  background: var(--teal);
  color: var(--white);
  border-color: var(--teal);
  padding: 10px 22px;
}
.btn-nav:hover {
  background: var(--teal-dk);
  color: var(--white);
  border-color: var(--teal-dk);
}


/* ===== HEADER / NAV ===== */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  background: rgba(13, 43, 62, 0.96);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: var(--navy);
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 5%;
  max-width: var(--max-width);
  margin-inline: auto;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  text-decoration: none;
}

.brand-logo { height: 40px; width: auto; }

.brand-text {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.02em;
}

.brand-accent { color: var(--teal); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--white); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }


/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  /* Fallback gradient shown when image is missing */
  background: linear-gradient(135deg, var(--navy) 0%, #1a5060 100%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(13, 43, 62, 0.82) 0%,
    rgba(13, 43, 62, 0.55) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 100px;
  padding-bottom: 80px;
  max-width: 680px;
}

.hero-tag {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,0.88);
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}


/* ===== SERVICES ===== */
.services { text-align: center; }
.services .section-sub { margin-inline: auto; }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--light-gray);
  border-radius: 12px;
  padding: 36px 28px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  text-align: center;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.12);
}

.service-icon-wrap {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: var(--off-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  overflow: hidden;
}

.service-icon-wrap img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--navy);
}

.service-card p {
  font-size: 0.94rem;
  color: var(--gray);
  line-height: 1.65;
}


/* ===== WHY US ===== */
.why-us-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.why-us-text .section-title { margin-bottom: 16px; }
.why-us-text > p { color: var(--gray); margin-bottom: 28px; }

.why-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.why-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.why-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--teal);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 2px;
}

.why-list strong { display: block; color: var(--navy); }
.why-list div { font-size: 0.93rem; color: var(--gray); }

.why-us-photo {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.14);
}

/* Fallback when photo is missing */
.media-placeholder {
  width: 100%;
  height: 480px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--teal) 0%, var(--navy) 100%);
}


/* ===== CONTACT ===== */
.contact .section-sub { margin-inline: auto; margin-bottom: 48px; text-align: center; }
.contact > .container > .section-tag,
.contact > .container > .section-title { text-align: center; }
.contact > .container > .section-title { margin-inline: auto; }

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 56px;
  align-items: start;
}

/* Form */
.contact-form { display: flex; flex-direction: column; gap: 0; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width { margin-bottom: 24px; }

label {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.02em;
}

label span[aria-hidden] { color: var(--teal); }

input, select, textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--light-gray);
  border-radius: var(--radius);
  font-family: 'Open Sans', sans-serif;
  font-size: 0.95rem;
  color: var(--navy);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(26,140,140,0.15);
}

input.invalid, select.invalid, textarea.invalid {
  border-color: #e05858;
}

textarea { resize: vertical; min-height: 110px; }

.field-error {
  font-size: 0.8rem;
  color: #e05858;
  min-height: 18px;
}

.btn-submit { align-self: flex-start; margin-top: 4px; }

.form-success {
  margin-top: 16px;
  padding: 14px 20px;
  background: #e6f7f7;
  color: var(--teal-dk);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Contact aside */
.contact-details {
  background: var(--navy);
  color: var(--white);
  border-radius: 16px;
  padding: 36px 28px;
}

.contact-details h3 {
  font-size: 1.2rem;
  margin-bottom: 24px;
  color: var(--white);
}

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

.contact-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
}

.contact-list a, .contact-list span {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.88);
  line-height: 1.5;
}

.contact-list a:hover { color: var(--white); }


/* ===== FOOTER ===== */
.site-footer {
  background: var(--navy);
  padding: 32px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-brand .brand-text { font-size: 1.1rem; }

.footer-copy {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--white); }


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

/* Tablet */
@media (max-width: 900px) {
  .why-us-inner {
    grid-template-columns: 1fr;
  }
  .why-us-media { order: -1; }
  .why-us-photo, .media-placeholder { height: 320px; }

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

/* Mobile */
@media (max-width: 640px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    position: absolute;
    inset-block-start: 100%;
    inset-inline: 0;
    background: var(--navy);
    padding: 16px 5%;
    border-top: 1px solid rgba(255,255,255,0.1);
  }

  .nav-links.open { display: flex; }

  .nav-links li { width: 100%; }

  .nav-links a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    font-size: 0.95rem;
  }

  .nav-links li:last-child a { border-bottom: none; }

  .btn-nav {
    background: none;
    border-color: transparent;
    padding-left: 0;
    color: var(--teal);
  }

  .section { padding: 60px 0; }

  .form-row { grid-template-columns: 1fr; }

  .hero-cta-group { flex-direction: column; }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}