/* ===================================
   Cuba Nica Chess Academy - Main Styles
   Dark Elegant Design
   =================================== */

:root {
  --primary-color: #1a1a2e;
  --secondary-color: #16213e;
  --accent-color: #e94560;
  --light-color: #eaeaea;
  --text-color: #d4d4d4;
  --border-color: #404040;
  --hover-color: #ff6b6b;
  --gold-color: #ffd700;
}

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

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

/* ===================================
   Header & Navigation
   =================================== */

header {
  background-color: var(--secondary-color);
  border-bottom: 2px solid var(--accent-color);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--gold-color);
  font-size: 1.5rem;
  font-weight: bold;
  transition: color 0.3s;
}

.logo:hover {
  color: var(--accent-color);
}

.logo-icon {
  font-size: 2rem;
}

.tagline {
  font-size: 0.75rem;
  color: var(--accent-color);
  margin-top: 0.25rem;
  font-style: italic;
}

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

nav a {
  color: var(--text-color);
  text-decoration: none;
  transition: color 0.3s, border-bottom 0.3s;
  border-bottom: 2px solid transparent;
  padding-bottom: 0.25rem;
}

nav a:hover {
  color: var(--gold-color);
  border-bottom-color: var(--accent-color);
}

nav a.active {
  color: var(--gold-color);
  border-bottom-color: var(--accent-color);
}

/* ===================================
   Footer
   =================================== */

footer {
  background-color: var(--secondary-color);
  border-top: 2px solid var(--accent-color);
  padding: 2rem;
  margin-top: 4rem;
  text-align: center;
  color: var(--text-color);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.social-links {
  margin: 1rem 0;
}

.social-links a {
  color: var(--gold-color);
  text-decoration: none;
  margin: 0 1rem;
  transition: color 0.3s;
}

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

/* ===================================
   Main Container
   =================================== */

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

main {
  min-height: 70vh;
}

/* ===================================
   Hero Section
   =================================== */

.hero {
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
  padding: 4rem 2rem;
  text-align: center;
  border-radius: 8px;
  margin-bottom: 3rem;
  border: 2px solid var(--accent-color);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--gold-color);
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}

.hero .subtitle {
  font-size: 1.5rem;
  color: var(--accent-color);
  margin-bottom: 1rem;
  font-style: italic;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-color);
  max-width: 600px;
  margin: 0 auto;
}

/* ===================================
   Sections & Content
   =================================== */

h2 {
  font-size: 2rem;
  color: var(--gold-color);
  margin: 2rem 0 1rem 0;
  border-bottom: 2px solid var(--accent-color);
  padding-bottom: 0.5rem;
}

h3 {
  color: var(--accent-color);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
  text-align: justify;
}

/* ===================================
   Card Layouts
   =================================== */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.card {
  background-color: var(--secondary-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.card:hover {
  border-color: var(--accent-color);
  box-shadow: 0 8px 15px rgba(233, 69, 96, 0.2);
  transform: translateY(-5px);
}

.card h3 {
  color: var(--gold-color);
  margin-top: 0;
}

.card p {
  color: var(--text-color);
  font-size: 0.95rem;
}

.card-meta {
  font-size: 0.85rem;
  color: var(--accent-color);
  margin-bottom: 1rem;
  font-style: italic;
}

/* ===================================
   Sections Grid
   =================================== */

.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.section-item {
  background-color: var(--secondary-color);
  border-left: 4px solid var(--accent-color);
  padding: 1.5rem;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.section-item:hover {
  background-color: var(--primary-color);
  border-left-color: var(--gold-color);
  box-shadow: 0 4px 8px rgba(233, 69, 96, 0.15);
}

.section-item h4 {
  color: var(--gold-color);
  margin-bottom: 0.75rem;
}

.section-item p {
  font-size: 0.95rem;
  color: var(--text-color);
}

/* ===================================
   Buttons
   =================================== */

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--accent-color);
  color: white;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn:hover {
  background-color: var(--hover-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(233, 69, 96, 0.3);
}

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

.btn-secondary:hover {
  background-color: #ffc700;
  color: var(--primary-color);
}

/* ===================================
   Forms
   =================================== */

form {
  background-color: var(--secondary-color);
  padding: 2rem;
  border-radius: 8px;
  max-width: 600px;
  margin: 2rem auto;
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--gold-color);
  font-weight: 500;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.75rem;
  background-color: var(--primary-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.3s;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 5px rgba(233, 69, 96, 0.3);
}

textarea {
  resize: vertical;
  min-height: 150px;
}

/* ===================================
   Placeholder Sections
   =================================== */

.placeholder {
  background-color: var(--secondary-color);
  border: 2px dashed var(--accent-color);
  padding: 2rem;
  border-radius: 8px;
  text-align: center;
  margin: 2rem 0;
}

.placeholder h3 {
  color: var(--gold-color);
  margin-top: 0;
}

.placeholder p {
  color: var(--text-color);
  font-style: italic;
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: 1rem;
  }

  nav ul {
    gap: 1rem;
    justify-content: center;
  }

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

  .hero .subtitle {
    font-size: 1.2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .card-grid,
  .section-grid {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 1rem;
  }

  footer {
    padding: 1.5rem;
  }

  .social-links a {
    margin: 0 0.5rem;
  }
}

/* ===================================
   Utility Classes
   =================================== */

.text-center {
  text-align: center;
}

.text-gold {
  color: var(--gold-color);
}

.text-accent {
  color: var(--accent-color);
}

.mt-2 {
  margin-top: 2rem;
}

.mb-2 {
  margin-bottom: 2rem;
}

.hidden {
  display: none;
}