/* DS Thermal LLC - Main Stylesheet */

:root {
  --primary-color: #1a1a2e;
  --secondary-color: #f39c12;
  --accent-color: #e74c3c;
  --text-light: #ecf0f1;
  --text-dark: #2c3e50;
  --background-light: #ffffff;
  --background-dark: #16213e;
  --border-radius: 8px;
  --transition-speed: 0.3s;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--background-light);
}

/* Responsive Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Header and Navigation */
header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--background-dark) 100%);
  color: var(--text-light);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  height: 120px;
  width: auto;
}

.brand-text h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.tagline {
  font-size: 0.9rem;
  color: var(--secondary-color);
  font-weight: 500;
}

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

nav a {
  color: var(--text-light);
  text-decoration: none;
  transition: color var(--transition-speed);
  font-weight: 500;
}

nav a:hover {
  color: var(--secondary-color);
}

/* Mobile Menu Toggle (Hamburger) */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--text-light);
  transition: all 0.3s;
}

.mobile-menu-toggle:hover span {
  background-color: var(--secondary-color);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--background-dark) 0%, var(--primary-color) 100%);
  color: var(--text-light);
  text-align: center;
  padding: 2.5rem 2rem;
}

.hero-heading-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.hero-bitcoin-logo {
  height: 27px;
  width: auto;
  opacity: 0.9;
  filter: drop-shadow(0 2px 4px rgba(243, 156, 18, 0.3));
}

.hero h2 {
  font-size: 2.2rem;
  margin: 0;
  font-weight: 700;
  color: var(--text-light);
}

.hero p {
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto 1.5rem;
  line-height: 1.7;
}

.cta-button {
  display: inline-block;
  background-color: var(--secondary-color);
  color: var(--primary-color);
  padding: 1rem 2rem;
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: 700;
  font-size: 1.1rem;
  transition: all var(--transition-speed);
  border: none;
  cursor: pointer;
}

.cta-button:hover {
  background-color: #e67e22;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(243, 156, 18, 0.3);
}

.service-area {
  font-size: 0.95rem;
  margin-top: 1rem;
  padding: 0.8rem;
  background-color: rgba(243, 156, 18, 0.1);
  border-radius: var(--border-radius);
  border-left: 3px solid var(--secondary-color);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Sections */
section {
  padding: 4rem 2rem;
}

section h2 {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--primary-color);
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.service-card {
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.service-card h3 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.service-card p {
  color: var(--text-dark);
  line-height: 1.7;
}

/* Why Choose Section */
.why-choose {
  background-color: #f8f9fa;
}

.features-list {
  max-width: 800px;
  margin: 0 auto;
  list-style: none;
}

.features-list li {
  padding: 1rem;
  margin-bottom: 1rem;
  background: white;
  border-left: 4px solid var(--secondary-color);
  border-radius: var(--border-radius);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  font-size: 1.1rem;
}

.features-list li strong {
  color: var(--primary-color);
}

/* Testimonials Section */
.testimonials {
  background-color: white;
}

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

.testimonial-card {
  background: #f8f9fa;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  border-top: 4px solid var(--secondary-color);
}

.testimonial-text {
  font-style: italic;
  color: var(--text-dark);
  line-height: 1.7;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.testimonial-author {
  font-weight: 600;
  color: var(--primary-color);
  text-align: right;
}

.testimonials-note {
  text-align: center;
  margin-top: 2rem;
  color: #666;
  font-size: 0.9rem;
}

/* FAQ Section */
.faq {
  background-color: #f8f9fa;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.faq-item {
  background: white;
  padding: 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
  transition: box-shadow var(--transition-speed);
}

.faq-item:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.12);
}

.faq-item h3 {
  color: var(--primary-color);
  font-size: 1.1rem;
  margin-bottom: 0.8rem;
  font-weight: 600;
}

.faq-item p {
  color: var(--text-dark);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* Contact Section */
.contact {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--background-dark) 100%);
  color: var(--text-light);
  text-align: center;
}

.contact h2 {
  color: var(--text-light);
}

.contact > .container > p {
  margin-bottom: 2rem;
}

/* Contact Form */
.contact-form {
  max-width: 700px;
  margin: 0 auto 2rem;
  text-align: left;
}

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

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-light);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius);
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--text-dark);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition-speed);
}

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

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

.contact-form button[type="submit"] {
  margin-top: 1rem;
  width: 100%;
}

.contact-info {
  margin-top: 2rem;
}

.email-option {
  font-size: 1rem;
  color: var(--text-light);
}

.contact-info a {
  color: var(--secondary-color);
  text-decoration: none;
  font-weight: 700;
  transition: color var(--transition-speed);
}

.contact-info a:hover {
  color: #e67e22;
}

/* Footer */
footer {
  background-color: var(--primary-color);
  color: var(--text-light);
  text-align: center;
  padding: 2rem;
  margin-top: 0;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  /* Show hamburger menu button on mobile */
  .mobile-menu-toggle {
    display: flex;
  }

  nav {
    flex-wrap: nowrap;
    padding: 0 1rem;
  }

  /* Hide navigation menu by default on mobile */
  nav .nav-menu {
    display: none;
    flex-direction: column;
    gap: 0;
    text-align: center;
    width: 100%;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--primary-color);
    padding: 1rem 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  }

  /* Show menu when active */
  nav .nav-menu.active {
    display: flex !important;
  }

  nav .nav-menu li {
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  nav .nav-menu li:last-child {
    border-bottom: none;
  }

  .hero-heading-container {
    flex-direction: column;
    gap: 0.5rem;
  }

  .hero-bitcoin-logo {
    height: 22px;
  }

  .hero h2 {
    font-size: 1.8rem;
  }

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

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

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

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

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  section {
    padding: 3rem 1rem;
  }

  .service-area {
    font-size: 0.85rem;
  }

  /* Ensure touch targets are large enough */
  .cta-button,
  nav a,
  .mobile-menu-toggle {
    min-height: 44px;
    min-width: 44px;
  }

  nav .nav-menu a {
    display: block;
    padding: 0.75rem 1rem;
  }
}

/* Tablet Responsive (768px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
  .container {
    padding: 0 1.5rem;
  }

  .logo {
    height: 100px;
  }

  .brand-text h1 {
    font-size: 1.4rem;
  }

  .hero h2 {
    font-size: 2.2rem;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .faq-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Small Mobile (480px and below) */
@media (max-width: 480px) {
  .logo {
    height: 60px;
  }

  .brand-text h1 {
    font-size: 1rem;
  }

  .tagline {
    font-size: 0.7rem;
  }

  .hero h2 {
    font-size: 1.5rem;
  }

  .hero p {
    font-size: 0.9rem;
  }

  .cta-button {
    width: 100%;
    padding: 1rem;
  }

  section {
    padding: 2rem 0.5rem;
  }
}