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

:root {
  --blue-dark: #1a3a5c;
  --blue: #2b6cb0;
  --blue-light: #4a9bd9;
  --blue-pale: #dceefb;
  --white: #ffffff;
  --grey-light: #f0f6fc;
  --grey: #6c757d;
  --text: #212529;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

ul {
  list-style: none;
}

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

/* ===== Header & Nav ===== */
.header {
  background: var(--blue-dark);
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.logo span {
  color: var(--blue-pale);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--white);
  font-weight: 500;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.3s;
}

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

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--white);
  margin: 5px 0;
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue-light));
  color: var(--white);
  text-align: center;
  padding: 5rem 2rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 60% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 45%),
    radial-gradient(circle at 10% 70%, rgba(255, 255, 255, 0.07) 0%, transparent 35%),
    radial-gradient(circle at 90% 60%, rgba(255, 255, 255, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

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

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.hero .tagline {
  font-size: 1.3rem;
  font-weight: 300;
  font-style: italic;
  opacity: 0.9;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 2rem;
  opacity: 0.85;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
  border: none;
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn-primary:hover {
  background: var(--blue-pale);
}

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

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

/* ===== Sections ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 4rem 0;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--blue-dark);
}

.section-subtitle {
  text-align: center;
  color: var(--grey);
  margin-bottom: 3rem;
  font-size: 1.1rem;
}

/* ===== Service Cards ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--white);
  border-radius: 8px;
  padding: 2rem;
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  border-top: 3px solid var(--blue-light);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  color: var(--blue-dark);
}

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

/* ===== Areas ===== */
.areas {
  background: var(--grey-light);
}

.area-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.area-tag {
  background: var(--blue-pale);
  color: var(--blue-dark);
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-weight: 500;
}

/* ===== CTA Banner ===== */
.cta {
  background: var(--blue);
  color: var(--white);
  text-align: center;
  padding: 3rem 2rem;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.04) 0%, transparent 35%);
  pointer-events: none;
}

.cta > * {
  position: relative;
  z-index: 1;
}

.cta h2 {
  margin-bottom: 0.75rem;
  font-size: 1.8rem;
}

.cta p {
  margin-bottom: 1.5rem;
  opacity: 0.9;
}

/* ===== Services Detail Page ===== */
.service-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.service-item {
  background: var(--white);
  border-radius: 8px;
  padding: 2.5rem;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--blue);
}

.service-item h3 {
  font-size: 1.4rem;
  color: var(--blue-dark);
  margin-bottom: 1rem;
}

.service-item p {
  color: var(--grey);
  line-height: 1.8;
  margin-bottom: 0.75rem;
}

.service-item ul {
  list-style: disc;
  padding-left: 1.5rem;
  color: var(--grey);
}

.service-item li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

/* ===== About Page ===== */
.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-content p {
  margin-bottom: 1.5rem;
  line-height: 1.8;
  color: var(--grey);
}

.values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.value-item {
  text-align: center;
  padding: 2rem;
}

.value-item .icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.value-item h3 {
  color: var(--blue-dark);
  margin-bottom: 0.75rem;
}

.value-item p {
  color: var(--grey);
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info h3 {
  color: var(--blue-dark);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.contact-info p {
  margin-bottom: 1rem;
  color: var(--grey);
  line-height: 1.7;
}

.contact-info .phone {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 1.5rem;
}

.contact-form {
  background: var(--white);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 500;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #dee2e6;
  border-radius: 4px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group .error-message {
  color: #dc3545;
  font-size: 0.85rem;
  margin-top: 0.3rem;
  display: none;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
  border-color: #dc3545;
}

.form-group.error .error-message {
  display: block;
}

.form-success {
  display: none;
  background: var(--blue-pale);
  color: var(--blue-dark);
  padding: 1rem;
  border-radius: 4px;
  text-align: center;
  font-weight: 500;
  margin-top: 1rem;
}

.form-success.show {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  font-size: 1.15rem;
}

/* ===== Footer ===== */
.footer {
  background: var(--blue-dark);
  color: var(--white);
  text-align: center;
  padding: 2rem;
  margin-top: auto;
}

.footer p {
  opacity: 0.8;
  font-size: 0.9rem;
}

.footer .phone-link {
  color: var(--blue-pale);
  font-weight: 600;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--blue-dark);
    padding: 1rem 2rem 2rem;
    gap: 1rem;
  }

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

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero .tagline {
    font-size: 1.1rem;
  }

  .hero p {
    font-size: 1rem;
  }

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

  .section-title {
    font-size: 1.6rem;
  }
}