/* ============================================
   DAWACLE — Premium Digital Engineering Site
   Colors: Black + Electric Blue (#0EA5E9) + White
   ============================================ */

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

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

:root {
  --black: #000000;
  --dark: #0A0A0A;
  --dark-800: #0F172A;
  --dark-700: #1E293B;
  --dark-600: #334155;
  --gray-400: #94A3B8;
  --gray-300: #CBD5E1;
  --gray-100: #F1F5F9;
  --white: #FFFFFF;
  --blue: #0EA5E9;
  --blue-light: #38BDF8;
  --blue-dark: #0284C7;
  --blue-glow: rgba(14, 165, 233, 0.15);
  --blue-glow-strong: rgba(14, 165, 233, 0.3);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-w: 1200px;
  --transition: 0.3s ease;
}

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

body {
  font-family: var(--font);
  background: var(--dark);
  color: var(--gray-300);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* --- Header / Nav --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(14, 165, 233, 0.1);
  transition: background var(--transition);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  color: var(--gray-300);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--blue);
}

.nav-lang {
  padding: 4px 14px;
  border: 1px solid var(--dark-600);
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-400);
  transition: all var(--transition);
}

.nav-lang:hover {
  border-color: var(--blue);
  color: var(--blue);
}

/* Mobile menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--gray-300);
  transition: all var(--transition);
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 10, 0.97);
    flex-direction: column;
    justify-content: center;
    gap: 32px;
    transform: translateX(100%);
    transition: transform var(--transition);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 1.2rem; }
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--black);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--blue-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--blue-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-tagline {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--blue);
  margin-bottom: 20px;
  padding: 6px 16px;
  border: 1px solid rgba(14, 165, 233, 0.3);
  border-radius: 4px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-title span {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--gray-400);
  margin-bottom: 40px;
  max-width: 600px;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  border: none;
  box-shadow: 0 0 30px var(--blue-glow-strong);
}

.btn-primary:hover {
  background: var(--blue-light);
  color: var(--white);
  box-shadow: 0 0 50px var(--blue-glow-strong);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--gray-300);
  border: 1px solid var(--dark-600);
}

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

/* --- Sections --- */
.section {
  padding: 120px 0;
}

.section-dark { background: var(--dark); }
.section-darker { background: var(--black); }

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--gray-400);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Services Grid --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .services-grid { grid-template-columns: 1fr; }
}

.service-card {
  background: var(--dark-800);
  border: 1px solid rgba(14, 165, 233, 0.08);
  border-radius: 12px;
  padding: 40px 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  border-color: rgba(14, 165, 233, 0.2);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.service-card:hover::before { opacity: 1; }

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-glow);
  border-radius: 10px;
  margin-bottom: 24px;
  color: var(--blue);
  font-size: 1.5rem;
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 0.95rem;
  color: var(--gray-400);
  line-height: 1.7;
}

/* --- References / Industries --- */
.ref-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

@media (max-width: 1024px) {
  .ref-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .ref-grid { grid-template-columns: 1fr; }
}

.ref-card {
  text-align: center;
  padding: 48px 24px;
  background: var(--dark-800);
  border: 1px solid rgba(14, 165, 233, 0.08);
  border-radius: 12px;
  transition: all var(--transition);
}

.ref-card:hover {
  border-color: rgba(14, 165, 233, 0.2);
  transform: translateY(-4px);
}

.ref-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

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

.ref-card p {
  font-size: 0.9rem;
  color: var(--gray-400);
  line-height: 1.6;
}

/* --- About --- */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

@media (max-width: 768px) {
  .about-content { grid-template-columns: 1fr; gap: 48px; }
}

.about-text h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 24px;
}

.about-text .lead {
  font-size: 1.15rem;
  color: var(--blue-light);
  margin-bottom: 24px;
  line-height: 1.7;
}

.about-text p {
  margin-bottom: 20px;
  color: var(--gray-400);
  line-height: 1.8;
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.value-item {
  padding: 32px;
  background: var(--dark-800);
  border-left: 3px solid var(--blue);
  border-radius: 0 12px 12px 0;
}

.value-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

.value-item p {
  font-size: 0.95rem;
  color: var(--gray-400);
  line-height: 1.6;
}

.certs-badge {
  margin-top: 40px;
  padding: 24px 32px;
  background: var(--blue-glow);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.certs-badge .badge-icon {
  font-size: 2rem;
  color: var(--blue);
}

.certs-badge h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}

.certs-badge p {
  font-size: 0.85rem;
  color: var(--gray-400);
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-300);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
  padding: 14px 18px;
  background: var(--dark-800);
  border: 1px solid var(--dark-600);
  border-radius: 8px;
  color: var(--white);
  font-size: 1rem;
  font-family: var(--font);
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-glow);
}

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-top: 16px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-glow);
  border-radius: 10px;
  color: var(--blue);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-info-item h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.contact-info-item p {
  font-size: 1rem;
  color: var(--white);
}

.contact-info-item a {
  color: var(--blue);
}

/* --- Footer --- */
.site-footer {
  background: var(--black);
  border-top: 1px solid rgba(14, 165, 233, 0.08);
  padding: 64px 0 32px;
}

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

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

.footer-brand img { height: 32px; margin-bottom: 16px; }

.footer-brand p {
  font-size: 0.9rem;
  color: var(--gray-400);
  max-width: 360px;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-300);
  margin-bottom: 20px;
}

.footer-col ul { list-style: none; }

.footer-col li { margin-bottom: 12px; }

.footer-col a {
  color: var(--gray-400);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-col a:hover { color: var(--blue); }

.footer-bottom {
  border-top: 1px solid var(--dark-700);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--dark-600);
}

/* --- Page-specific layouts --- */
.page-header {
  padding-top: 140px;
  padding-bottom: 60px;
  background: var(--black);
  text-align: center;
}

.page-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
}

.page-header p {
  font-size: 1.1rem;
  color: var(--gray-400);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Utility --- */
.text-center { text-align: center; }
.mt-16 { margin-top: 64px; }
.mb-8 { margin-bottom: 32px; }

/* --- Service Detail Pages --- */
.service-hero {
  padding: 140px 0 80px;
  background: var(--black);
  position: relative;
  overflow: hidden;
}

.service-hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -15%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--blue-glow) 0%, transparent 70%);
  pointer-events: none;
}

.back-link {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--gray-400);
  margin-bottom: 32px;
  transition: color var(--transition);
}

.back-link:hover { color: var(--blue); }

.service-hero-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: var(--blue-glow);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: 16px;
}

.service-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
  position: relative;
}

.service-hero-lead {
  font-size: 1.2rem;
  color: var(--gray-400);
  max-width: 700px;
  line-height: 1.8;
}

/* Service Overview */
.service-overview {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 64px;
  align-items: start;
}

@media (max-width: 768px) {
  .service-overview { grid-template-columns: 1fr; gap: 40px; }
}

.service-overview-text {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--gray-300);
}

.service-overview-text p { margin-bottom: 20px; }

.service-highlights {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--dark-800);
  border: 1px solid rgba(14, 165, 233, 0.08);
  border-radius: 12px;
  transition: all var(--transition);
}

.highlight-item:hover {
  border-color: rgba(14, 165, 233, 0.2);
}

.highlight-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--blue);
  min-width: 60px;
  text-align: center;
}

.highlight-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
}

/* Phase Timeline */
.phase-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.phase-item {
  display: flex;
  gap: 32px;
  position: relative;
  padding-bottom: 48px;
}

.phase-item:last-child { padding-bottom: 0; }
.phase-item:last-child .phase-line { display: none; }

.phase-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.phase-number {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 800;
  border-radius: 50%;
  box-shadow: 0 0 30px var(--blue-glow-strong);
  position: relative;
  z-index: 2;
}

.phase-line {
  width: 2px;
  flex: 1;
  background: linear-gradient(to bottom, var(--blue), rgba(14, 165, 233, 0.1));
  margin-top: 8px;
}

.phase-content {
  padding-top: 8px;
  flex: 1;
}

.phase-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.phase-content p {
  font-size: 1rem;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 16px;
}

.phase-activities {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.phase-activities li {
  font-size: 0.85rem;
  color: var(--blue-light);
  background: var(--blue-glow);
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid rgba(14, 165, 233, 0.15);
}

/* Deliverables */
.deliverables-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.deliverable-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  background: var(--dark-800);
  border: 1px solid rgba(14, 165, 233, 0.08);
  border-radius: 10px;
  transition: all var(--transition);
}

.deliverable-card:hover {
  border-color: rgba(14, 165, 233, 0.2);
  transform: translateX(4px);
}

.deliverable-icon {
  color: var(--blue);
  font-size: 1.2rem;
  font-weight: 700;
  flex-shrink: 0;
}

.deliverable-card span {
  font-size: 0.95rem;
  color: var(--gray-300);
}

/* Tech Stack */
.tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.tech-badge {
  padding: 10px 22px;
  background: var(--dark-800);
  border: 1px solid rgba(14, 165, 233, 0.15);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--blue-light);
  transition: all var(--transition);
}

.tech-badge:hover {
  border-color: var(--blue);
  background: var(--blue-glow);
  transform: translateY(-2px);
}

/* Service card as link */
a.service-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

a.service-card-link:hover { color: inherit; }

@media (max-width: 640px) {
  .phase-item { gap: 20px; }
  .phase-number { width: 42px; height: 42px; font-size: 1rem; }
}