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

:root {
  /* Dark theme (default) */
  --bg-color: #0f172a;
  --text-color: #f8fafc;
  --primary: #38bdf8;
  --primary-hover: #0ea5e9;
  --surface: #1e293b;
  --surface-hover: #334155;
  --border: #334155;
  --muted: #cbd5e1;
  --muted-lighter: #94a3b8;
  --footer-bg: #0f172a;
  --input-bg: #0f172a;
  --accent: #f8fafc;
  --shadow: rgba(0, 0, 0, 0.3);
  --shadow-sm: rgba(0, 0, 0, 0.2);
  --shadow-lighter: rgba(0, 0, 0, 0.1);
  --hero-overlay: rgba(15, 23, 42, 0.85);
  --btn-text: #0f172a;
}

[data-theme="light"] {
  --bg-color: #f8fafc;
  --text-color: #0f172a;
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --surface: #ffffff;
  --surface-hover: #f1f5f9;
  --border: #cbd5e1;
  --muted: #475569;
  --muted-lighter: #64748b;
  --footer-bg: #f1f5f9;
  --input-bg: #ffffff;
  --accent: #0f172a;
  --shadow: rgba(15, 23, 42, 0.08);
  --shadow-sm: rgba(15, 23, 42, 0.05);
  --shadow-lighter: rgba(15, 23, 42, 0.02);
  --hero-overlay: rgba(248, 250, 252, 0.85);
  --btn-text: #ffffff;
}

body {
  font-family: 'Poppins', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  transition: background-color 0.3s, color 0.3s;
}

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

ul {
  list-style: none;
}

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

/* UTILITY CLASSES */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 10px 25px;
  background-color: var(--primary);
  color: var(--btn-text);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  transition: background-color 0.3s, color 0.3s;
}

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

.btn-dark {
  background-color: var(--border);
  color: var(--text-color);
}

.btn-dark:hover {
  background-color: var(--muted-lighter);
  color: var(--bg-color);
}

.section-padding {
  padding: 60px 0;
}

.text-center {
  text-align: center;
}

.section-title {
  font-size: 32px;
  margin-bottom: 40px;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--primary);
  margin: 10px auto 0;
}

header {
  background-color: var(--surface);
  color: var(--text-color);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px var(--shadow);
  transition: background-color 0.3s, box-shadow 0.3s;
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 1px;
}

.logo img {
  height: 35px;
  width: auto;
}

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

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 20px;
  cursor: pointer;
  margin-left: auto;
  margin-right: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.3s, transform 0.2s;
  padding: 5px;
}

.theme-toggle:hover {
  color: var(--primary);
  transform: scale(1.1);
}

.nav-menu {
  display: flex;
}

.nav-menu li {
  margin-left: 30px;
}

.nav-link {
  font-weight: 500;
  transition: color 0.2s;
  color: var(--muted);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.hamburger {
  display: none;
  cursor: pointer;
  font-size: 24px;
}

.hero {
  background: linear-gradient(var(--hero-overlay), var(--hero-overlay)), url('images/hero-bg.webp') no-repeat center center/cover;
  background-color: var(--bg-color);
  height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  color: var(--text-color);
  transition: background 0.3s, color 0.3s;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 15px;
}

.hero p {
  font-size: 18px;
  max-width: 600px;
  margin: 0 auto 30px;
  color: var(--muted);
}

.services-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: center;
}

.service-card {
  background-color: var(--surface);
  color: var(--text-color);
  flex: 1 1 300px;
  max-width: 350px;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 6px -1px var(--shadow-sm);
  text-align: center;
  transition: transform 0.3s, border-color 0.3s, background-color 0.3s, box-shadow 0.3s;
  border: 1px solid var(--border);
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
}

.service-icon {
  font-size: 40px;
  color: var(--primary);
  margin-bottom: 20px;
}

.service-card h3 {
  margin-bottom: 15px;
}

/* TESTIMONIALS */
.testimonials-section {
  background-color: var(--surface);
  transition: background-color 0.3s;
}

.testimonial-container {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.testimonial-box {
  background: var(--bg-color);
  padding: 20px;
  border-left: 5px solid var(--primary);
  border-radius: 5px;
  flex: 1 1 45%;
  box-shadow: 0 4px 6px var(--shadow-lighter);
  transition: background-color 0.3s, box-shadow 0.3s;
}

.testimonial-box p {
  font-style: italic;
  margin-bottom: 10px;
  color: var(--muted);
}

.client-name {
  font-weight: bold;
  color: var(--primary);
}

/* ABOUT PAGE SPECIFIC */
.about-content {
  display: flex;
  align-items: center;
  gap: 40px;
}

.about-text {
  flex: 1;
}

.about-text p {
  color: var(--muted);
}

.about-image {
  flex: 1;
}

.about-image img {
  border-radius: 10px;
  box-shadow: 0 5px 15px var(--shadow);
}

/* Team Members */
.team-grid {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 30px;
}

.team-card {
  flex: 1 1 250px;
  max-width: 280px;
  background: var(--surface);
  text-align: center;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 6px var(--shadow-lighter);
  border: 1px solid var(--border);
  transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.team-photo {
  height: 200px;
  background-color: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color);
  font-size: 40px;
  transition: background-color 0.3s, color 0.3s;
}

.team-info {
  padding: 20px;
}

.team-info h4 {
  margin-bottom: 5px;
  color: var(--text-color);
}

.team-info p {
  color: var(--muted-lighter);
  font-size: 14px;
}

/* SERVICES PAGE SPECIFIC - ACCORDION */
.accordion-container {
  max-width: 800px;
  margin: 40px auto 0;
}

.accordion-item {
  background: var(--surface);
  margin-bottom: 10px;
  border-radius: 5px;
  box-shadow: 0 2px 5px var(--shadow-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: background-color 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.accordion-header {
  padding: 15px 20px;
  background-color: var(--bg-color);
  color: var(--primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  transition: background-color 0.3s, color 0.3s;
}

.accordion-header:hover {
  background-color: var(--surface);
}

.accordion-body {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease, background-color 0.3s;
  color: var(--muted);
  background-color: var(--surface);
}

.accordion-item.active .accordion-body {
  max-height: 200px;
  padding: 20px;
}

/* CONTACT PAGE FORM */
.contact-wrapper {
  display: flex;
  gap: 50px;
}

.contact-info {
  flex: 1;
}

.contact-info p {
  color: var(--muted);
}

.contact-form-container {
  flex: 2;
  background: var(--surface);
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 12px var(--shadow);
  border: 1px solid var(--border);
  transition: background-color 0.3s, box-shadow 0.3s, border-color 0.3s;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-color);
}

.form-control {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: inherit;
  font-size: 15px;
  background-color: var(--input-bg);
  color: var(--text-color);
  transition: background-color 0.3s, border-color 0.3s, color 0.3s;
}

.form-control::placeholder {
  color: var(--muted-lighter);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

textarea.form-control {
  height: 150px;
  resize: vertical;
}

/* Error messages */
.error-message {
  color: #f87171;
  font-size: 13px;
  margin-top: 5px;
  display: none;
}

/* Success Banner */
#success-banner {
  display: none;
  background-color: #059669;
  color: white;
  padding: 15px;
  border-radius: 5px;
  margin-bottom: 20px;
  text-align: center;
}

/* FOOTER */
footer {
  background-color: var(--footer-bg);
  color: var(--muted);
  padding: 40px 0 20px;
  margin-top: auto;
  border-top: 1px solid var(--border);
  transition: background-color 0.3s, border-color 0.3s;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 30px;
  margin-bottom: 30px;
}

.footer-col {
  flex: 1 1 200px;
}

.footer-col h4 {
  margin-bottom: 15px;
  border-bottom: 2px solid var(--primary);
  color: var(--text-color);
  display: inline-block;
  padding-bottom: 5px;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid var(--border);
  padding-top: 20px;
  font-size: 14px;
  color: var(--muted-lighter);
}

/* RESPONSIVE MEDIA QUERIES */
@media (max-width: 768px) {
  .navbar-container {
    flex-wrap: wrap;
  }

  .hamburger {
    display: block;
    color: var(--text-color);
  }

  .theme-toggle {
    margin-right: 15px;
  }

  nav {
    width: 100%;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    margin-top: 20px;
    background-color: var(--surface);
    border-radius: 5px;
    border: 1px solid var(--border);
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu li {
    margin: 0;
    text-align: center;
  }

  .nav-link {
    display: block;
    padding: 15px;
    border-bottom: 1px solid var(--border);
  }

  .hero h1 {
    font-size: 36px;
  }

  .about-content,
  .contact-wrapper {
    flex-direction: column;
  }
}