/* Custom Properties & Color Palette */
:root {
  --primary: #0f172a;       /* Deep slate */
  --secondary: #1e293b;     /* Card background dark slate */
  --accent: #f59e0b;        /* Amber accent */
  --accent-hover: #d97706;  /* Darker amber */
  --text-main: #334155;     /* Dark gray reading text */
  --text-dark: #0f172a;     /* Deep navy for headings */
  --bg-light: #f8fafc;      /* Light background */
  --bg-white: #ffffff;      /* White card background */
  --border-color: #e2e8f0;  /* Subtle borders */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  font-family: var(--font-stack);
  background-color: var(--bg-light);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 1.05rem;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  color: var(--accent-hover);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

a:hover {
  text-decoration: underline;
}

/* Typography Hierarchy */
h1, h2, h3 {
  color: var(--text-dark);
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 1.8rem;
  margin-top: 2.5rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.3rem;
  margin-top: 1.5rem;
}

p {
  margin-bottom: 1.25rem;
}

/* Navigation Bar */
.navbar {
  background-color: var(--primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.brand-logo {
  color: #ffffff;
  font-size: 1.25rem;
  font-weight: 700;
}

.brand-logo:hover {
  text-decoration: none;
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
}

.nav-links a {
  color: #f1f5f9;
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--accent);
  text-decoration: none;
}

.btn-nav {
  background-color: var(--accent);
  color: var(--primary) !important;
  padding: 8px 16px;
  border-radius: 4px;
  font-weight: 600 !important;
}

.btn-nav:hover {
  background-color: var(--accent-hover);
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #ffffff;
  padding: 80px 0;
  text-align: center;
}

.hero-content h1 {
  color: #ffffff;
  margin: 15px 0 20px 0;
}

.hero-content p {
  max-width: 800px;
  margin: 0 auto 30px auto;
  font-size: 1.15rem;
  color: #cbd5e1;
}

.badge {
  display: inline-block;
  background-color: rgba(245, 158, 11, 0.2);
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

/* Button Component */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn:hover {
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

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

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

.btn-secondary {
  background-color: transparent;
  color: #ffffff;
  border: 1px solid #ffffff;
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Main Layout Card */
.main-layout {
  margin-top: 40px;
  margin-bottom: 60px;
}

.article-content {
  background-color: var(--bg-white);
  padding: 40px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

/* Benefits Grid */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 20px 0;
}

.card {
  background-color: var(--bg-light);
  padding: 20px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.card h3 {
  margin-top: 0;
  font-size: 1.15rem;
}

.card p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* Table Styling */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 25px 0;
  font-size: 0.95rem;
}

.data-table th, .data-table td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  background-color: var(--primary);
  color: #ffffff;
}

.data-table tr:nth-child(even) {
  background-color: var(--bg-light);
}

/* FAQ Accordion Styling */
.faq-container {
  margin-top: 20px;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: 6px;
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  background-color: var(--bg-light);
  padding: 16px 20px;
  border: none;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--accent-hover);
}

.faq-question.active::after {
  content: '−';
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  background-color: var(--bg-white);
}

.faq-answer p {
  padding: 20px;
  margin-bottom: 0;
}

/* Contact Section */
.contact-section {
  background-color: var(--secondary);
  color: #ffffff;
  padding: 60px 0;
}

.contact-card {
  background-color: var(--primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 40px;
  border-radius: 8px;
  text-align: center;
}

.contact-card h2 {
  color: #ffffff;
  border-bottom: none;
  margin-top: 0;
}

.contact-card p {
  color: #cbd5e1;
}

.contact-details {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
  margin: 30px 0;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.contact-item strong {
  color: var(--accent);
}

.contact-item a, .contact-item span {
  color: #ffffff;
  font-weight: 400;
}

.contact-cta {
  margin-top: 20px;
}

/* Footer */
.footer {
  background-color: #020617;
  color: #94a3b8;
  padding: 30px 0;
  text-align: center;
  font-size: 0.9rem;
}

.footer p {
  margin-bottom: 5px;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  h1 {
    font-size: 1.9rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  .nav-links {
    display: none; /* Mobile optimization: simplifies top navigation */
  }

  .article-content {
    padding: 20px;
  }

  .contact-details {
    flex-direction: column;
    gap: 15px;
  }

  .data-table {
    display: block;
    overflow-x: auto;
  }
}