/* PS6 Repair - Professional blue theme inspired by modern service sites */
:root {
  --blue-900: #0a1f44;
  --blue-800: #0d2b5e;
  --blue-700: #123a7a;
  --blue-600: #1a4d9e;
  --blue-500: #2563eb;
  --blue-400: #3b82f6;
  --blue-300: #60a5fa;
  --blue-100: #dbeafe;
  --blue-50: #eff6ff;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --accent: #0ea5e9;
  --accent-hover: #0284c7;
  --warning: #f59e0b;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 40px rgba(15, 23, 42, 0.12);
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--gray-800);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--blue-600); text-decoration: none; }
a:hover { color: var(--blue-500); }

/* ========== HEADER ========== */
.site-header {
  background: var(--blue-900);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

.header-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--white);
  letter-spacing: -0.02em;
}

.nav-toggle {
  display: none;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--white);
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
  font-size: 1.15rem;
  cursor: pointer;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav a {
  color: rgba(255,255,255,0.85);
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}

.nav a:hover,
.nav a.active {
  background: rgba(255,255,255,0.12);
  color: var(--white);
}

.nav .btn-nav {
  background: var(--accent);
  color: var(--white) !important;
  margin-left: 0.4rem;
  font-weight: 600;
}

.nav .btn-nav:hover {
  background: var(--accent-hover);
}

@media (max-width: 800px) {
  .nav-toggle { display: block; }
  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    padding-top: 0.75rem;
    gap: 0.2rem;
  }
  .nav.open { display: flex; }
  .header-inner { flex-wrap: wrap; }
  .nav .btn-nav { margin-left: 0; text-align: center; }
}

/* ========== LAYOUT ========== */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

section { padding: 3.5rem 0; }

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.1rem);
  font-weight: 800;
  color: var(--blue-900);
  text-align: center;
  margin-bottom: 0.6rem;
  letter-spacing: -0.025em;
}

.section-sub {
  text-align: center;
  color: var(--gray-600);
  max-width: 580px;
  margin: 0 auto 2.25rem;
  font-size: 1.05rem;
}

/* ========== HERO ========== */
.hero {
  background: linear-gradient(160deg, var(--blue-900) 0%, var(--blue-800) 45%, var(--blue-700) 100%);
  color: var(--white);
  text-align: center;
  padding: 4.5rem 1.25rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 20%, rgba(14,165,233,0.15), transparent 50%);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(2rem, 5.5vw, 3.1rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
  position: relative;
}

.hero-lead {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  opacity: 0.92;
  max-width: 620px;
  margin: 0 auto 1.75rem;
  position: relative;
}

.hero .btn-row {
  position: relative;
  justify-content: center;
}

/* ========== BUTTONS ========== */
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform 0.12s, background 0.15s, box-shadow 0.15s;
  text-align: center;
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(14,165,233,0.35);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--white);
  box-shadow: 0 6px 20px rgba(14,165,233,0.45);
}

.btn-secondary {
  background: rgba(255,255,255,0.12);
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.35);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.2);
  color: var(--white);
}

.btn-dark {
  background: var(--blue-900);
  color: var(--white);
}

.btn-dark:hover {
  background: var(--blue-800);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--blue-700);
  border: 1.5px solid var(--blue-300);
}

.btn-outline:hover {
  background: var(--blue-50);
  color: var(--blue-800);
}

.btn-full { width: 100%; }

/* ========== CARDS ========== */
.grid {
  display: grid;
  gap: 1.35rem;
}

.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

@media (min-width: 600px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem;
  box-shadow: var(--shadow);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  display: flex;
  flex-direction: column;
}

.card:hover {
  border-color: var(--blue-300);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card h3 {
  font-size: 1.15rem;
  color: var(--blue-900);
  margin-bottom: 0.45rem;
  font-weight: 700;
}

.card p {
  color: var(--gray-600);
  font-size: 0.95rem;
  flex-grow: 1;
  margin-bottom: 1rem;
}

.card .card-link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--blue-600);
  margin-top: auto;
}

.card .card-link:hover { color: var(--accent); }

/* Why choose cards */
.why-card {
  text-align: center;
  padding: 1.75rem 1.4rem;
}

.why-card .icon {
  width: 48px;
  height: 48px;
  background: var(--blue-50);
  color: var(--blue-600);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin: 0 auto 1rem;
  font-weight: 700;
}

/* ========== CALLOUTS ========== */
.callout {
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-left: 4px solid var(--blue-500);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.25rem 1.4rem;
  margin: 1.5rem 0;
}

.callout.warning {
  background: #fffbeb;
  border-color: #fde68a;
  border-left-color: var(--warning);
}

.callout h3 {
  font-size: 1.05rem;
  color: var(--blue-900);
  margin-bottom: 0.4rem;
}

.callout p, .callout ul {
  color: var(--gray-700);
  font-size: 0.95rem;
}

.callout ul {
  margin: 0.5rem 0 0 1.15rem;
}

.callout li { margin-bottom: 0.3rem; }

/* ========== PAGE HERO (service pages) ========== */
.page-hero {
  background: linear-gradient(160deg, var(--blue-900), var(--blue-800));
  color: var(--white);
  padding: 2.75rem 1.25rem 2.5rem;
  text-align: center;
}

.page-hero .breadcrumb {
  font-size: 0.85rem;
  opacity: 0.75;
  margin-bottom: 0.75rem;
}

.page-hero .breadcrumb a { color: rgba(255,255,255,0.85); }
.page-hero .breadcrumb a:hover { color: var(--white); }

.page-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  font-weight: 800;
  margin-bottom: 0.5rem;
  letter-spacing: -0.025em;
}

.page-hero .lead {
  opacity: 0.9;
  max-width: 640px;
  margin: 0 auto 1.5rem;
  font-size: 1.05rem;
}

/* ========== CONTENT BLOCK ========== */
.content-block {
  max-width: 760px;
  margin: 0 auto;
}

.content-block h2 {
  font-size: 1.4rem;
  color: var(--blue-900);
  margin: 2rem 0 0.65rem;
  font-weight: 700;
}

.content-block h3 {
  font-size: 1.15rem;
  color: var(--blue-800);
  margin: 1.5rem 0 0.5rem;
}

.content-block p {
  color: var(--gray-700);
  margin-bottom: 1rem;
}

.content-block ul, .content-block ol {
  margin: 0.5rem 0 1.25rem 1.25rem;
  color: var(--gray-700);
}

.content-block li { margin-bottom: 0.4rem; }

.keywords-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  color: var(--gray-600);
}

.keywords-box strong {
  color: var(--blue-800);
  display: block;
  margin-bottom: 0.3rem;
}

/* FAQ */
.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.faq-item summary {
  padding: 1rem 1.2rem;
  font-weight: 600;
  color: var(--blue-900);
  cursor: pointer;
  background: var(--gray-50);
  list-style: none;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  float: right;
  font-weight: 700;
  color: var(--blue-500);
}

.faq-item[open] summary::after { content: "−"; }

.faq-item .faq-body {
  padding: 0 1.2rem 1.1rem;
  color: var(--gray-700);
  font-size: 0.95rem;
}

/* ========== CTA BAND ========== */
.cta-band {
  background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
  color: var(--white);
  text-align: center;
  padding: 3.25rem 1.25rem;
}

.cta-band h2 {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
  font-weight: 800;
}

.cta-band p {
  opacity: 0.9;
  margin-bottom: 1.5rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== FOOTER ========== */
.site-footer {
  background: var(--gray-900);
  color: rgba(255,255,255,0.7);
  padding: 2.75rem 1.25rem 2rem;
  text-align: center;
  font-size: 0.9rem;
}

.site-footer a {
  color: rgba(255,255,255,0.75);
}

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

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.1rem;
  margin-bottom: 1.5rem;
}

.footer-brand {
  color: var(--white);
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.footer-note {
  margin-top: 1.25rem;
  font-size: 0.8rem;
  opacity: 0.65;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== MOBILE CTA ========== */
.mobile-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(10, 31, 68, 0.97);
  backdrop-filter: blur(10px);
  padding: 0.7rem 1rem;
  z-index: 90;
  gap: 0.5rem;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.2);
}

@media (max-width: 768px) {
  .mobile-cta { display: flex; }
  body { padding-bottom: 72px; }
}

/* ========== UTILS ========== */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-2 { margin-bottom: 1rem; }
.muted { color: var(--gray-600); }
.small { font-size: 0.9rem; }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}