/*
 * GlobalTech Solutions Stylesheet
 *
 * This file defines the color palette, layout, typography and responsive styles
 * for the GlobalTech Solutions website. All animations and hover effects are
 * implemented with pure CSS. To replace images, update the files in
 * the assets/images directory. Adjust variables below to customize the color
 * scheme.
 */

/* CSS Variables */
:root {
  --primary-color: #0A84FF;       /* Main accent color (blue) */
  --primary-hover: #0667CC;       /* Hover state for primary buttons */
  --secondary-color: #00C49A;     /* Secondary accent color (teal) */
  --secondary-hover: #009D79;     /* Hover state for secondary buttons */
  --background-color: #0F1A24;    /* Site background */
  --surface-color: #1A2530;       /* Cards and surfaces */
  --text-color: #CCCCCC;          /* Base text color */
  --heading-color: #FFFFFF;       /* Heading text color */
  --muted-color: #888888;         /* Secondary text color */
  --border-color: #2A3440;        /* Borders and separators */
  --border-radius: 8px;           /* Global border radius */
  --transition: 0.3s ease;        /* Global transition timing */
}

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

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

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

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

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Header & Navigation */
.header {
  background: var(--background-color);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
}

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

.logo {
  display: flex;
  align-items: center;
  color: var(--heading-color);
  font-weight: 600;
  font-size: 1.2rem;
}

.logo img {
  width: 40px;
  height: 40px;
  margin-right: 0.5rem;
  border-radius: 4px;
}

.nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.nav ul li a {
  color: var(--text-color);
  font-weight: 400;
  transition: color var(--transition);
}

.nav ul li a:hover,
.nav ul li a.active {
  color: var(--primary-color);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle .hamburger,
.nav-toggle .hamburger::before,
.nav-toggle .hamburger::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--heading-color);
  position: relative;
  transition: transform var(--transition), background var(--transition);
}

.nav-toggle .hamburger::before,
.nav-toggle .hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
}

.nav-toggle .hamburger::before {
  top: -7px;
}

.nav-toggle .hamburger::after {
  top: 7px;
}

/* Hamburger animations when open */
.nav-toggle.open .hamburger {
  background: transparent;
}

.nav-toggle.open .hamburger::before {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.open .hamburger::after {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
#nav-list.open {
  display: block;
}

@media (max-width: 768px) {
  .nav ul {
    display: none;
    flex-direction: column;
    background: var(--surface-color);
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    border-radius: var(--border-radius);
    padding: 1rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
  }
  .nav ul li {
    margin-bottom: 1rem;
  }
  .nav ul li:last-child {
    margin-bottom: 0;
  }
  .nav-toggle {
    display: block;
  }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  font-weight: 600;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

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

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

.secondary-btn {
  background: var(--secondary-color);
  color: #fff;
}

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

.center-btn {
  display: inline-block;
  margin-top: 2rem;
}

/* Hero Section */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--heading-color);
  height: 80vh;
  background: url('assets/images/hero-bg.png') center/cover no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 0;
}

.hero .hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw + 1rem, 4rem);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  color: var(--muted-color);
}

.hero-buttons .btn {
  margin: 0 0.5rem;
}

/* Overview & Cards */
.services-overview {
  padding: 4rem 0;
  text-align: center;
}

.services-overview h2 {
  color: var(--heading-color);
  margin-bottom: 1rem;
  font-size: 2rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.card {
  background: var(--surface-color);
  padding: 2rem;
  border-radius: var(--border-radius);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.card-icon {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.card h3 {
  color: var(--heading-color);
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}

.card p {
  color: var(--muted-color);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.card-link {
  color: var(--primary-color);
  font-weight: 600;
  position: relative;
  display: inline-block;
}

.card-link::after {
  content: '\f105';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  margin-left: 0.5rem;
  transition: transform var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

.card:hover .card-link::after {
  transform: translateX(3px);
}

.card.appear {
  opacity: 1;
  transform: translateY(0);
}

/* How It Works Preview */
.how-it-works-preview {
  background: var(--surface-color);
  padding: 4rem 0;
  text-align: center;
}

.how-it-works-preview h2 {
  margin-bottom: 1rem;
  color: var(--heading-color);
  font-size: 2rem;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.step {
  background: var(--background-color);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  text-align: center;
  transition: transform var(--transition), opacity var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.step-icon {
  font-size: 2rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.step h3 {
  color: var(--heading-color);
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.step p {
  color: var(--muted-color);
  font-size: 0.9rem;
}

.step:hover {
  transform: translateY(-5px);
}

.step.appear {
  opacity: 1;
  transform: translateY(0);
}

/* Case Studies Preview */
.case-studies-preview {
  padding: 4rem 0;
  text-align: center;
}

.case-studies-preview h2 {
  color: var(--heading-color);
  font-size: 2rem;
  margin-bottom: 1rem;
}

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

.case-card {
  background: var(--surface-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.case-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.case-content {
  padding: 1.5rem;
}

.case-content h3 {
  color: var(--heading-color);
  margin-bottom: 0.5rem;
}

.case-content p {
  color: var(--muted-color);
  font-size: 0.9rem;
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

.case-card.appear {
  opacity: 1;
  transform: translateY(0);
}

/* CTA Banner */
.cta-banner {
  background: var(--primary-color);
  color: #fff;
  text-align: center;
  padding: 3rem 0;
}

.cta-banner h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.cta-banner p {
  font-size: 1rem;
  margin-bottom: 1.5rem;
  color: #f1f1f1;
}

.cta-banner .btn {
  margin-top: 1rem;
}

/* Footer */
.footer {
  background: var(--surface-color);
  color: var(--muted-color);
  padding-top: 3rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-about img {
  width: 40px;
  height: 40px;
  margin-bottom: 1rem;
}

.footer-about p {
  font-size: 0.9rem;
}

.footer-links h4,
.footer-contact h4,
.footer-social h4 {
  color: var(--heading-color);
  margin-bottom: 1rem;
}

.footer-links ul,
.footer-contact ul {
  list-style: none;
}

.footer-links ul li,
.footer-contact ul li {
  margin-bottom: 0.5rem;
  /* Align icon and multi-line address/text using flex layout */
  display: flex;
  align-items: flex-start;
}

.footer-links ul li a,
.footer-contact ul li a {
  color: var(--muted-color);
  transition: color var(--transition);
  font-size: 0.9rem;
}

.footer-links ul li a:hover,
.footer-contact ul li a:hover {
  color: var(--primary-color);
}

.footer-contact ul li i {
  margin-right: 0.5rem;
}

.footer-social .social-links a {
  color: var(--muted-color);
  font-size: 1.2rem;
  margin-right: 0.75rem;
  transition: color var(--transition);
}

.footer-social .social-links a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  text-align: center;
  padding: 1rem 0;
  font-size: 0.8rem;
  color: var(--muted-color);
}

/* Page Hero */
.page-hero {
  background: var(--surface-color);
  padding: 6rem 0 4rem;
  text-align: center;
  color: var(--heading-color);
}

.page-hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.page-hero p {
  color: var(--muted-color);
  font-size: 1rem;
}

/* Service Detail Sections */
.service-detail {
  padding: 4rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: opacity var(--transition), transform var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.service-detail:last-of-type {
  border-bottom: none;
}

.service-heading {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.service-heading .service-icon {
  font-size: 2rem;
  color: var(--primary-color);
  margin-right: 0.75rem;
}

.service-detail h2 {
  color: var(--heading-color);
  margin-bottom: 0.5rem;
}

.service-detail p {
  color: var(--muted-color);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.service-detail ul {
  margin-left: 1rem;
  margin-bottom: 1rem;
}

.service-detail ul li {
  margin-bottom: 0.5rem;
  color: var(--muted-color);
  font-size: 0.95rem;
}

.service-detail ul li strong {
  color: var(--heading-color);
}

.service-detail.appear {
  opacity: 1;
  transform: translateY(0);
}

/* Steps Detail Page */
.steps-detail {
  padding: 4rem 0;
}

.step-detail-card {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  background: var(--surface-color);
  padding: 2rem;
  border-radius: var(--border-radius);
  margin-bottom: 2rem;
  transition: opacity var(--transition), transform var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.step-detail-card .step-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  min-width: 40px;
}

.step-detail-card .step-content h2 {
  color: var(--heading-color);
  margin-bottom: 0.5rem;
}

.step-detail-card .step-content p {
  color: var(--muted-color);
  font-size: 0.95rem;
}

.step-detail-card.appear {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 600px) {
  .step-detail-card {
    flex-direction: column;
  }
  .step-detail-card .step-num {
    margin-bottom: 0.5rem;
  }
}

/* Case Studies Detail Page */
.case-studies-detail {
  padding: 4rem 0;
}

.case-study-card {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
  background: var(--surface-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: opacity var(--transition), transform var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.case-study-card .case-study-image img {
  width: 350px;
  height: 100%;
  object-fit: cover;
}

.case-study-card .case-study-info {
  flex: 1;
  padding: 2rem;
}

.case-study-card .case-study-info h2 {
  color: var(--heading-color);
  margin-bottom: 0.5rem;
}

.case-study-card .case-study-info p {
  color: var(--muted-color);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.case-study-card .case-study-info ul {
  list-style: none;
  padding-left: 0;
}

.case-study-card .case-study-info ul li {
  margin-bottom: 0.5rem;
  color: var(--muted-color);
  font-size: 0.95rem;
}

.case-study-card .case-study-info ul li strong {
  color: var(--primary-color);
}

.case-study-card.appear {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .case-study-card {
    flex-direction: column;
  }
  .case-study-card .case-study-image img {
    width: 100%;
    height: 200px;
  }
}

/* About Page */
.about-section {
  padding: 4rem 0;
}

.about-flex {
  display: flex;
  gap: 3rem;
  align-items: center;
  flex-wrap: wrap;
}

.about-text {
  flex: 1;
}

.about-image {
  flex: 1;
}

.about-image img {
  width: 100%;
  border-radius: var(--border-radius);
  object-fit: cover;
}

.about-text h2 {
  color: var(--heading-color);
  margin-bottom: 0.5rem;
}

.about-text p {
  color: var(--muted-color);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.why-list {
  margin-left: 1rem;
}

.why-list li {
  margin-bottom: 0.5rem;
  color: var(--muted-color);
  font-size: 0.95rem;
}

.why-list li strong {
  color: var(--heading-color);
}

/* Contact Page */
.contact-section {
  padding: 4rem 0;
}

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

.contact-info h2 {
  color: var(--heading-color);
  margin-bottom: 1rem;
}

.contact-info p {
  color: var(--muted-color);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.contact-details {
  list-style: none;
  padding-left: 0;
}

.contact-details li {
  margin-bottom: 0.5rem;
  color: var(--muted-color);
  font-size: 0.95rem;
  /* Use flex to align icon and multi-line address text */
  display: flex;
  align-items: flex-start;
}

.contact-details li a {
  color: var(--muted-color);
  transition: color var(--transition);
}

.contact-details li a:hover {
  color: var(--primary-color);
}

/* Ensure icons in contact details list have space after them */
.contact-details li i {
  margin-right: 0.5rem;
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.contact-form .form-group {
  display: flex;
  flex-direction: column;
}

.contact-form .form-group.full-width {
  grid-column: 1 / -1;
}

.contact-form label {
  color: var(--heading-color);
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}

.contact-form input,
.contact-form textarea {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  background: var(--surface-color);
  color: var(--text-color);
  border-radius: 4px;
  font-size: 0.9rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.contact-form button {
  grid-column: 1 / -1;
  margin-top: 1rem;
}

/* Animation Utility */
.appear {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .cards-grid,
  .steps-grid,
  .case-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
  .footer-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }
}