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

:root {
  --primary: #00796b;
  --accent: #ffd600;
  --background: #fff;
  --text: #222;
  --secondary: #f5f7fa;
  --border-radius: 14px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --transition: all 0.3s cubic-bezier(.4,0,.2,1);
}

html, body {
  font-family: 'Poppins', Arial, sans-serif;
  background: var(--background);
  color: var(--text);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  scroll-behavior: smooth;
}

/* Header */
header {
  background: var(--background);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 2rem;
}
.logo {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
}
nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: var(--transition);
}
nav a.active, nav a:hover {
  background: var(--primary);
  color: #fff;
}

/* Hero Section */
.hero {
  background: linear-gradient(120deg, var(--primary) 60%, var(--accent) 100%);
  color: #fff;
  padding: 5rem 2rem 6rem 2rem;
  text-align: center;
  position: relative;
}
.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -1px;
}
.hero p {
  font-size: 1.3rem;
  margin-bottom: 2.5rem;
  font-weight: 400;
  opacity: 0.95;
}
.hero .cta-btn {
  background: var(--accent);
  color: var(--primary);
  font-weight: 700;
  border: none;
  border-radius: 8px;
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.hero .cta-btn:hover {
  background: #fff;
  color: var(--primary);
}

/* Section */
section {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}
.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 1.5rem;
  text-align: center;
}
.section-desc {
  color: #555;
  font-size: 1.1rem;
  text-align: center;
  margin-bottom: 2.5rem;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 2rem;
}
.card {
  background: var(--secondary);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: var(--transition);
  position: relative;
}
.card:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 8px 32px rgba(0,0,0,0.13);
}
.card .icon {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
}
.card h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.7rem;
}
.card p {
  color: #444;
  font-size: 1rem;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}
.project-card {
  background: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 8px 32px rgba(0,0,0,0.13);
}
.project-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--secondary);
}
.project-content {
  padding: 1.5rem;
  flex: 1;
}
.project-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.project-category {
  display: inline-block;
  background: var(--accent);
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 12px;
  padding: 0.3rem 1rem;
  margin-bottom: 0.7rem;
}

/* Contact Section */
.contact-form {
  background: var(--secondary);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 2.5rem 2rem;
  max-width: 500px;
  margin: 0 auto;
}
.contact-form label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--primary);
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  border-radius: 8px;
  border: 1px solid #ddd;
  margin-bottom: 1.2rem;
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  transition: border 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  border: 1.5px solid var(--primary);
  outline: none;
}
.contact-form button {
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.contact-form button:hover {
  background: var(--accent);
  color: var(--primary);
}

/* Modern Footer Redesign */
footer {
  background: var(--primary);
  color: #fff;
  padding: 3rem 2rem 1rem 2rem;
  text-align: left;
  position: relative;
}
.footer-widgets {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  max-width: 1200px;
  margin: 0 auto 2rem auto;
  justify-content: space-between;
}
.footer-widget {
  flex: 1 1 220px;
  min-width: 200px;
}
.footer-logo {
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 1rem;
  color: #fff;
}
.footer-about {
  font-size: 1rem;
  color: #e0e0e0;
  margin-bottom: 1.2rem;
}
.footer-links-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links-list li {
  margin-bottom: 0.7rem;
}
.footer-links-list a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}
.footer-links-list a:hover {
  color: var(--accent);
}
.footer-contact {
  font-size: 1rem;
  color: #e0e0e0;
}
.footer-contact i {
  margin-right: 0.7rem;
  color: var(--accent);
}
.footer-social {
  margin-top: 1.2rem;
  display: flex;
  gap: 1rem;
}
.footer-social a {
  color: #fff;
  font-size: 1.3rem;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
}
.footer-social a:hover {
  background: var(--accent);
  color: var(--primary);
}
.footer-bottom {
  text-align: center;
  font-size: 0.98rem;
  color: #e0e0e0;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1.2rem;
  margin-top: 1.2rem;
}
@media (max-width: 900px) {
  .footer-widgets {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }
  .footer-widget {
    min-width: 0;
  }
}

/* Responsive */
@media (max-width: 900px) {
  .header-container, section {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .hero {
    padding: 3.5rem 1rem 4rem 1rem;
  }
}
@media (max-width: 600px) {
  .header-container {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }
  nav ul {
    flex-direction: column;
    gap: 1rem;
  }
  .hero h1 {
    font-size: 2.1rem;
  }
  .section-title {
    font-size: 1.4rem;
  }
  .cards, .projects-grid {
    grid-template-columns: 1fr;
  }
  section {
    padding: 2.5rem 0.5rem;
  }
}

/* Floating Contact Button */
.floating-contact-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--primary);
    color: #fff;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    transition: all 0.3s ease;
    z-index: 1000;
}

.floating-contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(0,0,0,0.2);
    background: var(--accent);
    color: var(--primary);
}

.floating-contact-btn i {
    font-size: 1.2rem;
}

@media (max-width: 600px) {
    .floating-contact-btn {
        bottom: 1.5rem;
        right: 1.5rem;
        padding: 0.8rem 1.2rem;
    }
    .floating-contact-btn span {
        display: none;
    }
    .floating-contact-btn i {
        margin: 0;
    }
}

/* Header Desktop */
@media (min-width: 901px) {
  .desktop-nav { display: flex; }
  .hamburger, .menu-overlay, .close-menu { display: none !important; }
  header { background: var(--background); color: var(--primary); box-shadow: var(--shadow); }
  .logo { color: var(--primary); }
}

/* Header Mobile/Tablet */
@media (max-width: 900px) {
  .desktop-nav { display: none !important; }
  .hamburger {
    display: flex;
    margin-right: 16px;
    z-index: 1001;
    color: var(--primary);
  }
  .header-container {
    padding: 0.7rem 1rem;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }
  .logo { font-size: 1.5rem; color: var(--primary); }
  header { background: #fff; color: var(--primary); box-shadow: var(--shadow); }
  .menu-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(0,0,0,0.96);
    z-index: 9999;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 0.3s;
    overflow-y: auto;
  }
  .menu-overlay.open { display: flex; }
  .menu-overlay nav ul {
    list-style: none;
    padding: 0; margin: 0;
    display: flex; flex-direction: column; gap: 2.2rem; align-items: center;
  }
  .menu-overlay nav a {
    font-size: 2rem; color: #fff; font-weight: 700;
    padding: 0.7rem 2.5rem; border-radius: 8px;
    transition: background 0.2s, color 0.2s;
    text-decoration: none; letter-spacing: 1px;
  }
  .menu-overlay nav a.active, .menu-overlay nav a:hover {
    background: var(--accent); color: var(--primary);
  }
  .close-menu {
    display: block;
    position: absolute;
    top: 1.2rem; right: 1.5rem;
    background: none; border: none; color: #fff;
    font-size: 2.5rem; cursor: pointer; z-index: 10001;
  }
}

/* Hamburger icon lines */
.hamburger {
  flex-direction: column; justify-content: center; align-items: center;
  width: 40px; height: 40px; background: none; border: none; cursor: pointer; padding: 0; margin: 0;
}
.hamburger span {
  height: 4px; width: 28px; background: var(--primary); margin: 4px 0; border-radius: 2px; transition: 0.3s; display: block;
}

.cta-btn.heartbeat-btn {
    padding: 0.5rem 1.1rem;
    font-size: 1rem;
    border-radius: 8px;
    display: inline-block;
}