/* Import Clash Display font */
@import url('https://api.fontshare.com/v2/css?f[]=clash-display@400,500,600,700&display=swap');

/* CSS Variables */
:root {
  --primary-color: steelblue;
  --accent-color: coral;
  --text-color: #2c3e50;
  --bg-light: #f8f9fa;
  --transition: all 0.3s ease;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Clash Display', sans-serif;
  color: var(--text-color);
  line-height: 1.7;
  font-size: 18px;
  overflow-x: hidden;
}

/* Typography */
h1 {
  font-size: 3rem !important;
  font-weight: 700 !important;
  margin-bottom: 1.5rem !important;
  line-height: 1.2 !important;
}

h2 {
  font-size: 2.2rem !important;
  font-weight: 700 !important;
  margin-top: 3rem !important;
  margin-bottom: 1.5rem !important;
  color: var(--primary-color) !important;
}

h3 {
  font-size: 1.6rem !important;
  font-weight: 600 !important;
  margin-top: 2rem !important;
  margin-bottom: 1rem !important;
  color: var(--text-color) !important;
}

p {
  font-size: 18px;
  margin-bottom: 1.25rem;
  color: var(--text-color);
}

strong {
  font-weight: 600;
  color: var(--primary-color);
}

/* Navigation */
.navbar {
  background: white !important;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  padding: 1rem 0 !important;
}

.navbar-brand {
  font-size: 1.8rem !important;
  font-weight: 700 !important;
  color: var(--primary-color) !important;
  display: flex !important;
  align-items: center !important;
  gap: 0.75rem !important;
}

.navbar-brand:hover {
  color: var(--accent-color) !important;
}

.navbar-brand img {
  width: 40px;
  height: 40px;
}

.navbar-nav {
  list-style: none !important;
}

.navbar-nav .nav-link {
  font-size: 1.05rem !important;
  font-weight: 500 !important;
  color: var(--text-color) !important;
  padding: 0.5rem 1rem !important;
  transition: var(--transition) !important;
  list-style: none !important;
}

.navbar-nav .nav-link::before,
.navbar-nav .nav-link::after {
  display: none !important;
}

.navbar-nav .nav-item {
  list-style: none !important;
}

.navbar-nav .nav-item::before,
.navbar-nav .nav-item::after {
  display: none !important;
}

.navbar-nav .nav-link:hover {
  color: var(--accent-color) !important;
}

/* Hero Section */
.hero-section {
  position: relative !important;
  min-height: 600px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  overflow: hidden !important;
  background: linear-gradient(135deg, #4682b4 0%, #5f9ea0 100%) !important;
  padding: 80px 0 !important;
  margin-bottom: 0 !important;
}

.hero-section::before {
  content: '' !important;
  position: absolute !important;
  top: -50% !important;
  left: -10% !important;
  width: 500px !important;
  height: 500px !important;
  background: rgba(255, 127, 80, 0.2) !important;
  border-radius: 50% !important;
  z-index: 0 !important;
}

.hero-section::after {
  content: '' !important;
  position: absolute !important;
  bottom: -30% !important;
  right: -5% !important;
  width: 400px !important;
  height: 400px !important;
  background: rgba(255, 255, 255, 0.1) !important;
  border-radius: 50% !important;
  z-index: 0 !important;
}

.hero-content {
  position: relative !important;
  z-index: 1 !important;
  text-align: center !important;
  color: white !important;
  max-width: 900px !important;
  padding: 40px 20px !important;
}

.hero-content h1 {
  color: white !important;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3) !important;
  font-size: 3rem !important;
  margin-bottom: 1.5rem !important;
}

.hero-content p {
  color: white !important;
  font-size: 1.25rem !important;
  margin-bottom: 2rem !important;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.2) !important;
}

.hero-content .btn-hero {
  background-color: var(--accent-color) !important;
  color: white !important;
  border: none !important;
  padding: 1rem 2.5rem !important;
  font-size: 1.1rem !important;
  font-weight: 600 !important;
  border-radius: 50px !important;
  transition: var(--transition) !important;
  text-decoration: none !important;
  display: inline-block !important;
  white-space: nowrap !important;
  box-shadow: 0 4px 15px rgba(255, 127, 80, 0.4) !important;
}

.hero-content .btn-hero:hover {
  background-color: #ff6347 !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 20px rgba(255, 127, 80, 0.5) !important;
}

/* Table of Contents */
.toc-section {
  background: var(--bg-light);
  padding: 2rem;
  border-radius: 10px;
  margin-bottom: 3rem;
}

.toc-list {
  list-style: none !important;
  padding-left: 0 !important;
  margin: 0 !important;
}

.toc-list li {
  margin-bottom: 0.75rem;
  list-style: none !important;
}

.toc-list li::before {
  content: '' !important;
  display: inline-block !important;
  width: 8px !important;
  height: 8px !important;
  background-color: var(--accent-color) !important;
  border-radius: 50% !important;
  margin-right: 0.75rem !important;
}

.toc-list a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  font-size: 1.05rem;
  transition: var(--transition);
}

.toc-list a:hover {
  color: var(--accent-color);
}

/* Content Lists */
ul, ol {
  margin-bottom: 1.5rem;
  padding-left: 0;
  list-style: none;
}

ul li, ol li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 1rem;
  font-size: 18px;
  line-height: 1.7;
  list-style: none !important;
}

ul li::before {
  content: '' !important;
  position: absolute !important;
  left: 0 !important;
  top: 0.6em !important;
  width: 10px !important;
  height: 10px !important;
  background-color: var(--accent-color) !important;
  border-radius: 50% !important;
}

ol {
  counter-reset: item;
}

ol li::before {
  content: counter(item) !important;
  counter-increment: item !important;
  position: absolute !important;
  left: 0 !important;
  top: 0 !important;
  width: 24px !important;
  height: 24px !important;
  background-color: var(--accent-color) !important;
  color: white !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-weight: 600 !important;
  font-size: 14px !important;
}

/* Cards */
.card {
  border: none !important;
  border-radius: 15px !important;
  box-shadow: 0 5px 20px rgba(0,0,0,0.08) !important;
  transition: var(--transition) !important;
  margin-bottom: 2rem !important;
  overflow: hidden !important;
}

.card:hover {
  box-shadow: 0 8px 30px rgba(0,0,0,0.12) !important;
  transform: translateY(-5px) !important;
}

.card-header {
  background: linear-gradient(135deg, var(--primary-color), #5f9ea0) !important;
  color: white !important;
  border: none !important;
  padding: 1.25rem 1.5rem !important;
  font-weight: 600 !important;
  font-size: 1.25rem !important;
}

.card-body {
  padding: 1.5rem !important;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

picture {
  display: block;
  margin: 2rem 0;
}

/* Tables */
.table-container {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  background: white;
}

thead {
  background: linear-gradient(135deg, var(--primary-color), #5f9ea0);
  color: white;
}

thead th {
  padding: 1.25rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 1.05rem;
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid #e9ecef;
  transition: var(--transition);
}

tbody tr:hover {
  background: var(--bg-light);
}

tbody td {
  padding: 1rem;
  font-size: 17px;
  color: var(--text-color);
}

tbody tr:last-child {
  border-bottom: none;
}

/* Sections */
section {
  padding: 4rem 0;
}

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

/* Footer */
footer {
  background: #2c3e50;
  color: white;
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

footer h5 {
  font-size: 1.25rem !important;
  font-weight: 600 !important;
  margin-bottom: 1.25rem !important;
  color: white !important;
}

footer ul {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

footer ul li {
  margin-bottom: 0.75rem !important;
  padding-left: 0 !important;
  list-style: none !important;
}

footer ul li::before {
  display: none !important;
}

footer ul li::after {
  display: none !important;
}

footer a {
  color: #ecf0f1 !important;
  text-decoration: none !important;
  font-size: 1rem !important;
  transition: var(--transition) !important;
}

footer a:hover {
  color: var(--accent-color) !important;
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.95rem;
  color: #95a5a6;
}

/* Buttons */
.btn-primary {
  background-color: var(--accent-color) !important;
  border: none !important;
  padding: 0.75rem 2rem !important;
  font-size: 1.05rem !important;
  font-weight: 600 !important;
  border-radius: 50px !important;
  transition: var(--transition) !important;
  white-space: nowrap !important;
  color: white !important;
}

.btn-primary:hover {
  background-color: #ff6347 !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 4px 15px rgba(255, 127, 80, 0.3) !important;
}

/* Responsive Design */
@media (max-width: 992px) {
  h1 {
    font-size: 2.5rem !important;
  }

  h2 {
    font-size: 1.9rem !important;
  }

  h3 {
    font-size: 1.4rem !important;
  }

  .hero-content h1 {
    font-size: 2.5rem !important;
  }

  .navbar-nav {
    padding: 1rem 0;
  }

  .navbar-nav .nav-link {
    padding: 0.75rem 0 !important;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 17px;
  }

  h1 {
    font-size: 2rem !important;
  }

  h2 {
    font-size: 1.6rem !important;
  }

  h3 {
    font-size: 1.3rem !important;
  }

  .hero-section {
    min-height: 500px !important;
    padding: 60px 0 !important;
  }

  .hero-content h1 {
    font-size: 2rem !important;
  }

  .hero-content p {
    font-size: 1.1rem !important;
  }

  .hero-content .btn-hero {
    padding: 0.85rem 2rem !important;
    font-size: 1rem !important;
  }

  section {
    padding: 3rem 0;
  }

  .card-header {
    font-size: 1.1rem !important;
  }

  img {
    margin: 1.5rem auto !important;
    display: block !important;
    width: 100% !important;
  }
}

@media (max-width: 576px) {
  body {
    font-size: 16px;
  }

  h1 {
    font-size: 1.75rem !important;
  }

  h2 {
    font-size: 1.4rem !important;
  }

  h3 {
    font-size: 1.2rem !important;
  }

  .hero-content h1 {
    font-size: 1.75rem !important;
  }

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

  .navbar-brand {
    font-size: 1.5rem !important;
  }

  .navbar-brand img {
    width: 35px;
    height: 35px;
  }

  thead th, tbody td {
    padding: 0.75rem 0.5rem;
    font-size: 15px;
  }
}