/* ==========================================================================
   AndrioSol Tech — Site Stylesheet
   ========================================================================== */

:root {
  --navy-900: #0f1b33;
  --navy-800: #16233f;
  --navy-700: #1b2a4a;
  --navy-600: #223460;
  --blue-500: #1e9bd7;
  --blue-400: #3fb4ec;
  --blue-100: #e6f5fc;
  --gray-900: #1f2937;
  --gray-700: #445061;
  --gray-500: #6b7280;
  --gray-300: #d6dce5;
  --gray-100: #f5f7fa;
  --white: #ffffff;
  --success: #16a34a;
  --danger: #dc2626;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  --max-width: 1180px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(15, 27, 51, 0.08);
  --shadow-md: 0 8px 24px rgba(15, 27, 51, 0.10);
  --shadow-lg: 0 20px 48px rgba(15, 27, 51, 0.16);
  --transition: 200ms ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 88px 0; }

@media (max-width: 768px) {
  section { padding: 56px 0; }
}

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; color: var(--navy-900); }

h1 { font-size: clamp(2.2rem, 4.2vw, 3.4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); letter-spacing: -0.01em; }
h3 { font-size: 1.25rem; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue-500);
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--blue-500);
  display: inline-block;
}

.section-head { max-width: 680px; margin: 0 0 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.section-head p { color: var(--gray-700); font-size: 1.05rem; margin-top: 14px; }

.lede { font-size: 1.15rem; color: var(--gray-700); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.98rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--blue-500);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--blue-400); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.35);
  color: var(--white);
}
.btn-outline:hover { border-color: var(--white); transform: translateY(-2px); }

.btn-navy {
  background: var(--navy-700);
  color: var(--white);
}
.btn-navy:hover { background: var(--navy-600); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-block { width: 100%; }

/* ---------- Header / Nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--gray-300);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.15rem; color: var(--navy-900); }
.brand img { width: 36px; height: 36px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-links a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--gray-700);
  transition: color var(--transition);
  position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--navy-900); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -18px;
  height: 3px;
  background: var(--blue-500);
  border-radius: 2px;
}

.nav-cta { display: flex; align-items: center; gap: 18px; }
.nav-cta .btn { padding: 11px 22px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--navy-900); border-radius: 2px; }

@media (max-width: 900px) {
  .nav-links { position: fixed; top: 68px; left: 0; right: 0; background: var(--white); flex-direction: column; align-items: flex-start; gap: 0; padding: 8px 24px 20px; border-bottom: 1px solid var(--gray-300); box-shadow: var(--shadow-md); transform: translateY(-140%); opacity: 0; transition: transform var(--transition), opacity var(--transition); }
  .nav-links.open { transform: translateY(0); opacity: 1; }
  .nav-links a { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--gray-100); }
  .nav-links a.active::after { display: none; }
  .nav-cta .btn-navy-link { display: none; }
  .nav-toggle { display: flex; }
}

/* ---------- Hero ---------- */

.hero {
  background: linear-gradient(155deg, var(--navy-900) 0%, var(--navy-700) 55%, var(--navy-600) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
  padding: 120px 0 100px;
}

.hero::after {
  content: "";
  position: absolute;
  top: -180px;
  right: -180px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(30,155,215,0.35) 0%, rgba(30,155,215,0) 70%);
}

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

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero h1 { color: var(--white); margin-bottom: 20px; }
.hero .lede { color: rgba(255,255,255,0.82); margin-bottom: 34px; max-width: 560px; }

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 56px;
  max-width: 560px;
}
.hero-stats div { border-left: 2px solid rgba(255,255,255,0.25); padding-left: 14px; }
.hero-stats strong { display: block; font-size: 1.6rem; color: var(--white); }
.hero-stats span { font-size: 0.85rem; color: rgba(255,255,255,0.65); }

.hero-panel {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(6px);
}
.hero-panel h3 { color: var(--white); font-size: 1.05rem; margin-bottom: 20px; }
.hero-steps { display: flex; flex-direction: column; gap: 4px; }
.hero-steps li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 4px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.9);
  font-weight: 600;
  font-size: 0.95rem;
}
.hero-steps li:last-child { border-bottom: none; }
.hero-steps .num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--blue-500);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero { padding: 90px 0 64px; }
}

/* ---------- Page hero (interior pages) ---------- */

.page-hero {
  background: linear-gradient(155deg, var(--navy-900) 0%, var(--navy-700) 100%);
  color: var(--white);
  padding: 76px 0 68px;
  text-align: center;
}
.page-hero h1 { color: var(--white); margin-bottom: 14px; }
.page-hero p { color: rgba(255,255,255,0.8); max-width: 620px; margin: 0 auto; font-size: 1.08rem; }
.breadcrumb { font-size: 0.85rem; color: rgba(255,255,255,0.55); margin-bottom: 18px; }
.breadcrumb a { color: rgba(255,255,255,0.8); }
.breadcrumb a:hover { color: var(--white); }

/* ---------- Logo strip ---------- */

.industry-strip { padding: 40px 0; border-bottom: 1px solid var(--gray-300); }
.industry-strip p { text-align: center; font-size: 0.82rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--gray-500); font-weight: 700; margin-bottom: 22px; }
.industry-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.industry-row span {
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--gray-100);
  color: var(--gray-700);
  font-size: 0.88rem;
  font-weight: 600;
}

/* ---------- Cards: Services ---------- */

.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }

@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.service-card {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: transparent; }

.icon-badge {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--blue-100);
  color: var(--blue-500);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.icon-badge svg { width: 24px; height: 24px; }

.service-card h3 { margin-bottom: 10px; }
.service-card p { color: var(--gray-700); font-size: 0.95rem; }

/* ---------- Process ---------- */

.process-section { background: var(--navy-900); color: var(--white); }
.process-section .section-head h2 { color: var(--white); }
.process-section .section-head p { color: rgba(255,255,255,0.65); }

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  counter-reset: step;
}
@media (max-width: 980px) { .process-steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .process-steps { grid-template-columns: 1fr; } }

.process-step {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 26px 20px;
  position: relative;
}
.process-step .step-number {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--blue-400);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  display: block;
}
.process-step h3 { color: var(--white); font-size: 1.05rem; margin-bottom: 8px; }
.process-step p { color: rgba(255,255,255,0.62); font-size: 0.88rem; }

/* ---------- Projects ---------- */

.project-card {
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}
.project-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }

.project-thumb {
  height: 168px;
  background: linear-gradient(135deg, var(--navy-700), var(--blue-500));
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 18px;
}
.project-thumb span {
  background: rgba(255,255,255,0.15);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.project-body { padding: 26px; flex: 1; display: flex; flex-direction: column; }
.project-body h3 { margin-bottom: 10px; }
.project-body p { color: var(--gray-700); font-size: 0.94rem; margin-bottom: 18px; }
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; margin-bottom: 16px; }
.project-tags span { font-size: 0.76rem; font-weight: 700; color: var(--navy-700); background: var(--gray-100); padding: 5px 10px; border-radius: 6px; }
.project-link { font-weight: 700; color: var(--blue-500); font-size: 0.92rem; display: inline-flex; align-items: center; gap: 6px; }
.project-link svg { width: 16px; height: 16px; transition: transform var(--transition); }
.project-link:hover svg { transform: translateX(3px); }

/* Full case-study layout on projects.html */

.case-study {
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  padding: 44px;
  margin-bottom: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.case-study:nth-child(even) { background: var(--gray-100); }
@media (max-width: 900px) { .case-study { grid-template-columns: 1fr; padding: 30px 24px; } }

.case-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.case-meta span { font-size: 0.75rem; font-weight: 700; color: var(--navy-700); background: var(--blue-100); padding: 5px 10px; border-radius: 6px; text-transform: uppercase; letter-spacing: 0.03em; }

.case-study h2 { font-size: 1.5rem; margin-bottom: 14px; }
.case-block { margin-bottom: 18px; }
.case-block h4 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--blue-500); margin-bottom: 6px; }
.case-block p { color: var(--gray-700); font-size: 0.96rem; }

.result-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 8px; }
.result-stats div { background: var(--white); border: 1px solid var(--gray-300); border-radius: var(--radius-sm); padding: 16px 12px; text-align: center; }
.case-study:nth-child(even) .result-stats div { background: var(--white); }
.result-stats strong { display: block; font-size: 1.4rem; color: var(--navy-900); }
.result-stats span { font-size: 0.76rem; color: var(--gray-500); }

/* ---------- Testimonials ---------- */

.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
@media (max-width: 980px) { .testimonial-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .testimonial-grid { grid-template-columns: 1fr; } }

.testimonial-card {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
}
.stars { color: #f5a623; letter-spacing: 2px; margin-bottom: 14px; font-size: 0.95rem; }
.testimonial-card p.quote { color: var(--gray-900); font-size: 0.97rem; margin-bottom: 22px; flex: 1; }
.testimonial-card p.quote::before { content: "\201C"; }
.testimonial-card p.quote::after { content: "\201D"; }

.testimonial-person { display: flex; align-items: center; gap: 12px; }
.avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--navy-700), var(--blue-500));
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.testimonial-person strong { display: block; font-size: 0.92rem; color: var(--navy-900); }
.testimonial-person span { font-size: 0.8rem; color: var(--gray-500); }

/* ---------- CTA banner ---------- */

.cta-banner {
  background: linear-gradient(120deg, var(--blue-500), var(--navy-700));
  border-radius: var(--radius-lg);
  padding: 56px;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-banner h2 { color: var(--white); margin-bottom: 8px; font-size: 1.6rem; }
.cta-banner p { color: rgba(255,255,255,0.85); }

/* ---------- Contact page ---------- */

.contact-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: flex-start;
}
@media (max-width: 900px) { .contact-layout { grid-template-columns: 1fr; } }

.contact-form-card {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }

.field { margin-bottom: 20px; }
.field label { display: block; font-size: 0.88rem; font-weight: 700; color: var(--navy-900); margin-bottom: 7px; }
.field .req { color: var(--danger); }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--gray-900);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(30,155,215,0.15);
}
.field textarea { resize: vertical; min-height: 130px; }

.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

.form-note { font-size: 0.82rem; color: var(--gray-500); margin-top: 14px; }

.alert {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 24px;
  display: none;
}
.alert.show { display: block; }
.alert-success { background: #eafaf0; color: #146c34; border: 1px solid #b6ecc8; }
.alert-error { background: #fdecec; color: #9b1c1c; border: 1px solid #f6c2c2; }

.contact-info-card {
  background: var(--navy-900);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 24px;
}
.contact-info-card h3 { color: var(--white); margin-bottom: 18px; }
.contact-info-row { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.1); }
.contact-info-row:last-child { border-bottom: none; }
.contact-info-row .ico {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(30,155,215,0.2); color: var(--blue-400);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.contact-info-row strong { display: block; font-size: 0.92rem; color: var(--white); }
.contact-info-row span, .contact-info-row a { font-size: 0.88rem; color: rgba(255,255,255,0.68); }
.contact-info-row a:hover { color: var(--white); }

.faq-card { border: 1px solid var(--gray-300); border-radius: var(--radius-lg); padding: 30px; }
.faq-item { border-bottom: 1px solid var(--gray-300); padding: 16px 0; }
.faq-item:last-child { border-bottom: none; }
.faq-item h4 { font-size: 0.95rem; color: var(--navy-900); margin-bottom: 6px; }
.faq-item p { font-size: 0.88rem; color: var(--gray-700); }

/* ---------- Footer ---------- */

.site-footer { background: var(--navy-900); color: rgba(255,255,255,0.7); padding: 64px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-grid .brand { color: var(--white); margin-bottom: 14px; }
.footer-grid p { font-size: 0.9rem; line-height: 1.7; max-width: 280px; }
.footer-grid h4 { color: var(--white); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 16px; }
.footer-grid ul li { margin-bottom: 10px; }
.footer-grid ul a { font-size: 0.9rem; transition: color var(--transition); }
.footer-grid ul a:hover { color: var(--white); }

.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; }

/* ---------- Reveal animation ---------- */

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }