/* ============================================================
   Modern Techworks — Shared Stylesheet
   moderntech.works | Repair. Upgrade. Recycle.
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- CSS Variables --- */
:root {
  --navy: #0d1b2a;
  --navy-mid: #162032;
  --navy-light: #1e2f45;
  --accent: #00d4ff;
  --accent-dark: #00a8cc;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --text-primary: #f0f4f8;
  --text-secondary: #9bb3cc;
  --text-muted: #607d99;
  --white: #ffffff;
  --card-bg: #162032;
  --card-border: rgba(0, 212, 255, 0.12);
  --success: #22c55e;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.25);
  --transition: 0.22s ease;
  --max-width: 1140px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background-color: var(--navy);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul {
  list-style: none;
}

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

.section {
  padding: 80px 0;
}

.section-alt {
  background-color: var(--navy-mid);
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 48px;
}

.section-header {
  margin-bottom: 48px;
}

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

/* --- Navigation --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(13, 27, 42, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
  padding: 0 24px;
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--white);
  text-decoration: none;
}

.navbar-logo:hover {
  color: var(--accent);
}

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

.navbar-nav a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
}

.navbar-nav a:hover {
  color: var(--white);
}

.navbar-cta {
  background-color: var(--accent);
  color: var(--navy) !important;
  font-weight: 700 !important;
  padding: 9px 20px;
  border-radius: var(--radius);
  font-size: 0.88rem !important;
  white-space: nowrap;
  transition: background-color var(--transition), transform var(--transition) !important;
}

.navbar-cta:hover {
  background-color: var(--white) !important;
  color: var(--navy) !important;
  transform: translateY(-1px);
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-primary);
  font-size: 1.4rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--navy);
}

.btn-primary:hover {
  background-color: var(--white);
  color: var(--navy);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 212, 255, 0.3);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 2px solid rgba(255, 255, 255, 0.25);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 0.9rem;
}

/* --- Trust Bar --- */
.trust-bar {
  background-color: var(--navy-light);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  padding: 16px 24px;
}

.trust-bar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 40px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.trust-item .trust-icon {
  color: var(--accent);
  font-size: 1rem;
}

/* --- Cards --- */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 14px;
  display: block;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.card-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.card-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
}

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

/* --- Services Grid --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* --- Why Choose Grid --- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.why-card {
  text-align: center;
  padding: 32px 20px;
}

.why-card .card-icon {
  font-size: 2.5rem;
}

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, var(--navy-light) 0%, #0d2233 100%);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  padding: 72px 24px;
  text-align: center;
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
}

.cta-banner p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 32px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.cta-phone {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.cta-phone:hover {
  color: var(--accent);
}

/* --- Footer --- */
.footer {
  background-color: var(--navy-mid);
  border-top: 1px solid var(--card-border);
  padding: 56px 24px 32px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-contact-item {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.footer-contact-item a {
  color: var(--text-secondary);
}

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

.footer-col-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

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

.footer-bottom {
  border-top: 1px solid var(--card-border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* --- Page Hero (inner pages) --- */
.page-hero {
  background: linear-gradient(135deg, var(--navy-light) 0%, var(--navy) 100%);
  border-bottom: 1px solid var(--card-border);
  padding: 64px 24px 56px;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 14px;
}

.page-hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto;
}

/* --- Service Detail (services page) --- */
.service-section {
  padding: 64px 0;
  border-bottom: 1px solid var(--card-border);
}

.service-section:last-child {
  border-bottom: none;
}

.service-header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 24px;
}

.service-emoji {
  font-size: 2.8rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 4px;
}

.service-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
}

.service-body {
  max-width: 720px;
}

.service-body p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.service-list {
  margin: 20px 0 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.service-list li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* --- Contact Form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 48px;
  align-items: start;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background-color: var(--navy-light);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: border-color var(--transition);
  appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-group select option {
  background-color: var(--navy-mid);
}

.contact-info-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
}

.contact-info-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
}

.contact-info-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-info-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-info-value {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.contact-info-value a {
  color: var(--accent);
}

.contact-chat-box {
  background: linear-gradient(135deg, var(--accent-glow), transparent);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-top: 24px;
  text-align: center;
}

.contact-chat-box p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

/* --- About Page --- */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-photo-placeholder {
  background-color: var(--navy-light);
  border: 2px dashed var(--card-border);
  border-radius: var(--radius-lg);
  height: 340px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
  gap: 8px;
}

.about-photo-placeholder .ph-icon {
  font-size: 2.5rem;
  opacity: 0.4;
}

.about-text h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.75;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.value-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px 20px;
}

.value-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.value-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Smart Home Highlight --- */
.smarthome-highlight {
  background: linear-gradient(135deg, #0d2233 0%, var(--navy-mid) 100%);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}

.smarthome-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.smarthome-text h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}

.smarthome-text p {
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.7;
}

.smarthome-list {
  margin: 20px 0 28px;
}

.smarthome-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 10px;
}

.smarthome-list li::before {
  content: '→';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

.smarthome-visual {
  background-color: var(--navy-light);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.smarthome-feature {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background-color: rgba(0, 212, 255, 0.05);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
}

.smarthome-feature .sh-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.smarthome-feature h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 2px;
}

.smarthome-feature p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
}

/* --- Service Area --- */
.area-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: start;
}

.area-primary h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.area-primary p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

.area-badge {
  display: inline-block;
  background-color: var(--accent);
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.cities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.city-tag {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-align: center;
}

/* --- Intro Section --- */
.intro-text {
  max-width: 760px;
}

.intro-text p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .smarthome-inner,
  .about-story,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .area-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-grid > :first-child {
    grid-column: 1 / -1;
  }

  .values-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 56px 0;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .why-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cities-grid {
    grid-template-columns: 1fr 1fr;
  }

  .navbar-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background-color: var(--navy-mid);
    border-bottom: 1px solid var(--card-border);
    flex-direction: column;
    padding: 20px 24px;
    gap: 20px;
    align-items: flex-start;
  }

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

  .navbar-toggle {
    display: block;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .cta-actions {
    flex-direction: column;
  }

  .smarthome-visual {
    display: none;
  }

  .about-photo-placeholder {
    height: 220px;
  }
}

/* --- Utility --- */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-0 { margin-bottom: 0; }