/*
 * Batu Teknik - Custom CSS
 * Premium dark blue, accent orange, and crisp white theme
 */

:root {
  --color-primary: #0f172a; /* Dark Blue */
  --color-primary-light: #1e293b;
  --color-secondary: #f97316; /* Accent Orange */
  --color-secondary-hover: #ea580c;
  --color-light: #ffffff;
  --color-bg: #f8fafc;
  --color-text: #334155;
  --color-text-light: #64748b;
  --color-border: #e2e8f0;

  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --container-max: 1200px;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  --transition: all 0.3s ease;
  --border-radius: 8px;
}

/* Reset & BaseStyles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-family);
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-primary);
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1.5rem;
}

a {
  text-decoration: none;
  color: var(--color-secondary);
  transition: var(--transition);
}

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

ul {
  list-style: none;
}

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

/* Layout Classes */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section-light {
  background-color: var(--color-light);
}

.section-dark {
  background-color: var(--color-primary);
  color: var(--color-light);
}

.section-dark h2, .section-dark h3 {
  color: var(--color-light);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
  position: relative;
  padding-bottom: 15px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background-color: var(--color-secondary);
  border-radius: 2px;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  max-width: 700px;
  margin: 0 auto 50px auto;
  font-size: 1.1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
  font-size: 1rem;
}

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

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

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-secondary);
  color: var(--color-secondary);
}

.btn-outline:hover {
  background-color: var(--color-secondary);
  color: var(--color-light);
}

/* Top Bar (Contact Info) */
.top-bar {
  background-color: var(--color-primary);
  color: var(--color-light);
  padding: 8px 0;
  font-size: 0.9rem;
}

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

.top-info {
  display: flex;
  gap: 20px;
}

.top-info span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.top-info i {
  color: var(--color-secondary);
}

@media (max-width: 768px) {
  .top-bar {
    display: none;
  }
}

/* Header & Navigation */
.header {
  background-color: var(--color-light);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

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

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo i {
  color: var(--color-secondary);
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  color: var(--color-text);
  font-weight: 600;
  font-size: 1rem;
}

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

.header-btn {
  display: flex;
  align-items: center;
}

.mobile-menu-btn {
  display: none;
  font-size: 1.5rem;
  color: var(--color-primary);
  cursor: pointer;
  background: none;
  border: none;
}

/* Responsive Navigation */
@media (max-width: 992px) {
  .header-btn {
    display: none;
  }
  
  .nav-links {
    position: fixed;
    top: 115px; /* Adjust if Top Bar height differs */
    left: -100%;
    width: 100%;
    height: calc(100vh - 110px);
    background-color: var(--color-light);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 40px;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
  }

  .nav-links.active {
    left: 0;
  }

  .mobile-menu-btn {
    display: block;
  }
  
  .header.scrolled + .nav-links {
    top: 80px;
    height: calc(100vh - 80px);
  }
}

/* Footer Section */
.footer {
  background-color: var(--color-primary);
  color: var(--color-light);
  padding: 80px 0 20px 0;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h3 {
  color: var(--color-light);
  font-size: 1.3rem;
  margin-bottom: 25px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 3px;
  background-color: var(--color-secondary);
}

.footer-col.about p {
  color: #94a3b8;
  margin-bottom: 20px;
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-primary-light);
  color: var(--color-light);
  border-radius: 50%;
  transition: var(--transition);
}

.social-links a:hover {
  background-color: var(--color-secondary);
  transform: translateY(-3px);
}

.footer-links li {
  margin-bottom: 15px;
}

.footer-links a {
  color: #94a3b8;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-links a::before {
  content: '\f105'; /* FontAwesome angle-right */
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 0.8rem;
  color: var(--color-secondary);
}

.footer-links a:hover {
  color: var(--color-secondary);
  padding-left: 5px;
}

.footer-contact li {
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
  color: #94a3b8;
}

.footer-contact i {
  color: var(--color-secondary);
  font-size: 1.2rem;
  margin-top: 3px;
}

.footer-bottom {
  text-align: center;
  padding-top: 25px;
  border-top: 1px solid var(--color-primary-light);
  color: #64748b;
  font-size: 0.95rem;
}

/* Floating Phone Button */
.phone-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 110px;
  right: 40px;
  background-color: var(--color-primary);
  color: #FFF;
  border-radius: 50px;
  text-align: center;
  font-size: 24px;
  box-shadow: 2px 2px 10px rgba(0,0,0,0.15);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.phone-float:hover {
  background-color: var(--color-secondary);
  color: #fff;
  transform: scale(1.1);
}

/* Floating WhatsApp Button */
.whatsapp-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 40px;
  right: 40px;
  background-color: #25d366;
  color: #FFF;
  border-radius: 50px;
  text-align: center;
  font-size: 30px;
  box-shadow: 2px 2px 10px rgba(0,0,0,0.15);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.whatsapp-float:hover {
  background-color: #128C7E;
  color: #fff;
  transform: scale(1.1);
}

@media (max-width: 768px) {
  .whatsapp-float {
    width: 50px;
    height: 50px;
    bottom: 20px;
    right: 20px;
    font-size: 26px;
  }
  .phone-float {
    width: 50px;
    height: 50px;
    bottom: 80px;
    right: 20px;
    font-size: 20px;
  }
}