/* ===== CSS Variables ===== */
:root {
  --primary: #2d3436;
  --primary-light: #4a5568;
  --accent: #d5926f;
  --accent-light: #e0a685;
  --accent-dark: #c07a55;
  --text: #2d3436;
  --text-light: #636e72;
  --bg: #ffffff;
  --bg-alt: #faf9f7;
  --bg-dark: #2d3436;
  --white: #ffffff;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--bg);
}

h1, h2, h3, h4 {
  line-height: 1.2;
  color: var(--primary);
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Header & Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--white);
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo img {
  height: 140px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--text);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Mobile Menu Button */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--bg) 0%, var(--bg-alt) 100%);
  padding-top: 140px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 70%;
  height: 200%;
  background: linear-gradient(135deg, rgba(13, 148, 136, 0.05) 0%, rgba(26, 54, 93, 0.05) 100%);
  transform: rotate(-12deg);
  z-index: 0;
}

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

.hero-content {
  max-width: 700px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: 1.5rem;
  color: var(--primary);
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-light);
  margin-bottom: 2rem;
  max-width: 600px;
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ===== Sections Common ===== */
section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.125rem;
}

/* ===== Services Section ===== */
.services {
  background: var(--bg-alt);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--white);
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.service-icon svg {
  width: 30px;
  height: 30px;
  stroke: var(--white);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.service-card .tagline {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--text-light);
}

/* ===== Technology Section ===== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.tech-category {
  background: var(--bg-alt);
  padding: 2rem;
  border-radius: 12px;
  border-left: 4px solid var(--accent);
}

.tech-category h3 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  background: var(--white);
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow);
}

/* ===== About Section ===== */
.about {
  background: var(--bg-alt);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-text p {
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.highlight-box {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.highlight-box strong {
  color: var(--accent);
  display: block;
  margin-bottom: 0.5rem;
}

.highlight-box span {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ===== Contact Section ===== */
.contact {
  background: var(--primary);
  color: var(--white);
}

.contact .section-header h2 {
  color: var(--white);
}

.contact .section-header p {
  color: rgba(255, 255, 255, 0.8);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.15);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.btn-submit {
  width: 100%;
  background: var(--accent);
  color: var(--white);
  padding: 1rem 2rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-submit:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.6);
  padding: 2rem 0;
  text-align: center;
}

.footer p {
  font-size: 0.875rem;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Mobile Responsive ===== */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 120px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    transition: var(--transition);
  }

  .nav-links.active {
    transform: translateY(0);
  }

  .menu-toggle {
    display: flex;
  }

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

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

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

  .hero {
    padding-top: 140px;
    text-align: center;
  }

  .hero p {
    margin-left: auto;
    margin-right: auto;
  }

  section {
    padding: 4rem 0;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .about-highlights {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

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

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