/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,400;0,500;0,700;1,400&family=Playfair+Display:wght@600;700&display=swap');

/* Original Color Palette & CSS Variables */
:root {
  --bg-color: #F8F6FA;
  --text-color: #36304A;
  --accent-color: #B8A2CD;
  --accent-hover: #9E84BA;
  --card-bg: #FFFFFF;
  --border-color: #E2DAEB;
}

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

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

html {
  scroll-behavior: smooth;
}

/* --- Top Header Bar (Logo Left + Main Page Tabs Right) --- */
.main-header {
  background-color: var(--card-bg);
  padding: 1.25rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  font-family: 'Playfair Display', serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-color);
  text-decoration: none;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 1.25rem;
  align-items: center;
}

.main-nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  font-size: 1rem;
  padding: 0.5rem 0.85rem;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.main-nav a:hover, 
.main-nav a.active {
  background-color: var(--accent-color);
  color: #FFFFFF;
}

/* --- Secondary Sub-Nav Bar (Centered & Styled) --- */
.sub-nav-bar {
  background-color: var(--card-bg);
  padding: 0.9rem 2.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 10px rgba(54, 48, 74, 0.03);
}

.sub-nav-bar a {
  color: var(--text-color);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 0.4rem 0.85rem;
  border-radius: 20px;
  transition: all 0.25s ease;
}

.sub-nav-bar a:hover {
  color: var(--accent-hover);
  background-color: var(--bg-color);
  transform: translateY(-1px);
}

/* --- Main Layout & Cards --- */
main {
  max-width: 900px;
  margin: 2.5rem auto;
  padding: 0 1.5rem;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 15px rgba(54, 48, 74, 0.04);
}

/* Typography */
h1, h2, h3 {
  font-family: 'Playfair Display', serif;
  color: var(--text-color);
  margin-bottom: 0.75rem;
}

h1 { font-size: 2.2rem; }
h2 { font-size: 1.6rem; margin-top: 0.5rem; }
h3 { font-size: 1.2rem; margin-top: 0.5rem; }

p {
  margin-bottom: 1rem;
}

/* Media */
.responsive-img {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  border-radius: 8px;
  margin: 1rem 0;
  border: 1px solid var(--border-color);
}

audio {
  width: 100%;
  margin-top: 0.75rem;
}

/* Lists */
ul, ol {
  margin-left: 1.5rem;
  margin-bottom: 1.25rem;
}

li {
  margin-bottom: 0.5rem;
}

/* --- Footer & Back to Top Button --- */
footer {
  text-align: center;
  padding: 2rem 0 3.5rem 0;
}

.back-to-top {
  display: inline-block;
  background-color: var(--accent-color);
  color: #FFFFFF;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: 30px;
  box-shadow: 0 4px 10px rgba(54, 48, 74, 0.1);
  transition: all 0.2s ease;
}

.back-to-top:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
}