@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;700&family=Inter:wght@300;400;500&display=swap');

:root {
  --bg-color: #0d070b; /* Deepest crimson-gray void */
  --surface-color: rgba(28, 16, 24, 0.65);
  --surface-color-light: rgba(43, 26, 37, 0.85);
  --text-primary: #e8e6ed;
  --text-secondary: #a395a1;
  --accent-primary: #8b1e3f; /* Deep crimson/burgundy */
  --accent-primary-glow: rgba(139, 30, 63, 0.35);
  --accent-secondary: #4a4d52;
  --accent-gold: #d4af37;
  --font-serif: 'Cinzel', serif;
  --font-sans: 'Inter', sans-serif;
  --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  --glass-border: 1px solid rgba(255, 255, 255, 0.05);
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: linear-gradient(rgba(13, 7, 11, 0.75), rgba(13, 7, 11, 0.75)), url('midsummer_bg.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 2px;
}

/* Header */
header {
  padding: 2rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: var(--glass-border);
  background: rgba(13, 7, 11, 0.85);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content h1 {
  font-size: 1.8rem;
  text-transform: uppercase;
  text-shadow: 0 0 10px var(--accent-primary-glow);
}

.header-content p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  letter-spacing: 1px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 1.8rem;
  text-decoration: none;
  font-family: var(--font-serif);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.85rem;
  transition: var(--transition);
  border-radius: 4px;
  cursor: pointer;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.btn-outline {
  background: rgba(139, 30, 63, 0.05);
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
}

.btn-outline:hover {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: 0 0 20px var(--accent-primary-glow);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), #521124);
  color: #fff;
  border: none;
  font-weight: 700;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 20px var(--accent-primary-glow);
  filter: brightness(1.1);
}

/* Hero section */
.hero {
  position: relative;
  padding: 6rem 5%;
  text-align: center;
  border-bottom: var(--glass-border);
  background: rgba(13, 7, 11, 0.5);
  margin-bottom: 2rem;
}

.hero h2 {
  font-size: 3rem;
  margin-bottom: 1rem;
  text-shadow: 0 0 30px rgba(255,255,255,0.1);
  color: #fff;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 1.5rem;
}

.price-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.filter-btn {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-secondary);
  padding: 0.6rem 1.4rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
  box-shadow: 0 0 15px var(--accent-primary-glow);
}

/* Grid & Cards */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2.5rem;
  padding: 2rem 5% 4rem;
  max-width: 1400px;
  margin: 0 auto;
}

.book-card {
  background: var(--surface-color);
  backdrop-filter: blur(12px);
  border: var(--glass-border);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.book-card:hover {
  transform: translateY(-8px);
  border-color: rgba(139, 30, 63, 0.45);
  box-shadow: 0 15px 40px rgba(139, 30, 63, 0.35);
}

.book-cover-container {
  width: 100%;
  height: 420px;
  position: relative;
  overflow: hidden;
  background: #000;
}

.book-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
  opacity: 0.85;
}

.book-card:hover .book-cover {
  transform: scale(1.06);
  opacity: 1;
}

.book-info {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.book-title {
  font-size: 1.3rem;
  margin-bottom: 0.3rem;
  color: #fff;
}

.book-author {
  font-size: 0.85rem;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1rem;
}

.book-metadata {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.8rem;
}

.meta-tag {
  font-size: 0.72rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: rgba(139, 30, 63, 0.15);
  border: 1px solid rgba(139, 30, 63, 0.3);
  color: #e8e6ed;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.price-tag {
  background: rgba(212, 175, 55, 0.15);
  border-color: rgba(212, 175, 55, 0.4);
  color: #ffd700;
  font-weight: 700;
}

.book-blurb {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 5rem 2rem;
  color: var(--text-secondary);
  font-family: var(--font-serif);
}

/* Forms */
.form-container {
  max-width: 650px;
  margin: 3rem auto;
  padding: 3rem;
  background: var(--surface-color);
  border: var(--glass-border);
  border-radius: 12px;
  box-shadow: 0 10px 35px rgba(0,0,0,0.5);
}

.form-group {
  margin-bottom: 1.8rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-serif);
  color: var(--accent-gold);
  font-size: 0.95rem;
}

input[type="text"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: 0.9rem;
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-primary);
  border-radius: 6px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition);
}

input[type="text"]:focus,
input[type="url"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  background: rgba(0,0,0,0.5);
  box-shadow: 0 0 15px var(--accent-primary-glow);
}

.form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2rem;
}

/* Success Alert */
#success-message {
  display: none;
  padding: 1.2rem;
  background: rgba(46, 139, 87, 0.1);
  border: 1px solid rgba(46, 139, 87, 0.3);
  border-left: 4px solid #2e8b57;
  border-radius: 6px;
  margin-bottom: 1.5rem;
  color: #a8d5ba;
}