/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black:        #0a0a0a;
  --dark:         #111111;
  --card:         rgba(18, 18, 18, 0.92);
  --white:        #ffffff;
  --muted:        #999999;
  --accent:       #2a6496;
  --accent-light: #3a80c0;
  --border:       rgba(255,255,255,0.1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  color: var(--white);
  background: var(--black);
  line-height: 1.6;
}

/* ===== NAV ===== */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10,10,10,0.97);
  border-bottom: 1px solid rgba(42,100,150,0.3);
  backdrop-filter: blur(8px);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  color: var(--white);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  gap: 0.2rem;
  align-items: center;
}
.nav-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 0.75rem;
  border-radius: 2px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--white); background: rgba(255,255,255,0.06); }
.nav-links a.active { color: var(--white); border-bottom: 2px solid var(--accent); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.3rem;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(0,0,0,0.65) 0%, rgba(42,100,150,0.25) 100%),
    url('https://images.unsplash.com/photo-1513364776144-60967b0f800f?w=1800&auto=format&fit=crop')
    center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
}
.hero-content h1 {
  font-size: clamp(2.8rem, 8vw, 6rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  line-height: 1.1;
  margin-bottom: 1rem;
  text-transform: uppercase;
}
.hero-content h1 span { color: var(--accent-light); font-weight: 700; }
.hero-content p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.1em;
  margin-bottom: 2.5rem;
  text-transform: uppercase;
}
.hero-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ===== PAGE HEADER ===== */
.page-header {
  padding: 8rem 2rem 3rem;
  text-align: center;
  background:
    linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)),
    url('https://images.unsplash.com/photo-1513364776144-60967b0f800f?w=1800&auto=format&fit=crop')
    center/cover no-repeat fixed;
}
.page-header h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.page-header p { color: var(--muted); font-size: 1rem; letter-spacing: 0.05em; }

/* ===== SECTIONS ===== */
.section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}
.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 0.5rem;
}
.section-heading {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  margin-bottom: 3rem;
}
.divider {
  width: 60px; height: 2px;
  background: var(--accent);
  margin: 1rem 0 3rem;
}

/* ===== PHOTO GRID ===== */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.photo-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.photo-card:hover {
  transform: translateY(-4px);
  border-color: rgba(42,100,150,0.5);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}
.photo-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  transition: opacity 0.3s;
}
.photo-card:hover img { opacity: 0.9; }
.photo-info {
  padding: 1rem 1.2rem;
  border-top: 1px solid var(--border);
}
.photo-info h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  color: var(--white);
}
.photo-info p {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.2rem;
}
.photo-price {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-light);
}
.sold-badge {
  position: absolute;
  top: 1rem; right: 1rem;
  background: var(--accent);
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
  text-transform: uppercase;
}
.sold-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
  pointer-events: none;
}
.empty-state {
  grid-column: 1/-1;
  text-align: center;
  padding: 4rem 2rem;
  color: var(--muted);
}
.empty-state p { font-size: 1rem; margin-top: 0.5rem; }

/* ===== LIGHTBOX ===== */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border: 1px solid var(--border);
}
.lightbox-info {
  margin-top: 1.2rem;
  text-align: center;
}
.lightbox-info h3 { font-size: 1.1rem; margin-bottom: 0.3rem; }
.lightbox-info p { font-size: 0.85rem; color: var(--muted); }
.lightbox-close {
  position: absolute;
  top: 1.5rem; right: 2rem;
  background: none; border: none;
  color: var(--white);
  font-size: 2rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.lightbox-close:hover { opacity: 1; }
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: none; border-radius: 2px;
  color: var(--white);
  font-size: 1.8rem;
  cursor: pointer;
  padding: 0.5rem 1rem;
  transition: background 0.2s;
}
.lightbox-nav:hover { background: rgba(255,255,255,0.2); }
.lightbox-prev { left: 1rem; }
.lightbox-next { right: 1rem; }

/* ===== BOOKS GRID ===== */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 2rem;
}
.book-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}
.book-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.5); }
.book-card img { width: 100%; aspect-ratio: 2/3; object-fit: cover; display: block; }
.book-info { padding: 1.2rem; }
.book-info h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.4rem; }
.book-info p { font-size: 0.82rem; color: var(--muted); line-height: 1.5; }
.book-link {
  display: inline-block;
  margin-top: 0.8rem;
  font-size: 0.8rem;
  color: var(--accent-light);
  text-decoration: none;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
}
.book-link:hover { color: var(--white); }

/* ===== ABOUT PAGE ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 4rem;
  align-items: start;
}
.about-photo img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 4px;
  object-fit: cover;
}
.about-text h2 {
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}
.about-text .subtitle {
  color: var(--accent-light);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.about-text p { color: rgba(255,255,255,0.8); margin-bottom: 1rem; line-height: 1.8; }

/* ===== FEATURED (HOME) ===== */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.featured-card {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  aspect-ratio: 1;
  background: var(--dark);
  border: 1px solid var(--border);
}
.featured-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.featured-card:hover img { transform: scale(1.04); }
.featured-card-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  padding: 2rem 1rem 1rem;
  text-align: center;
}
.featured-card-label span {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.9);
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: start;
}
.contact-info h2 { font-size: 1.8rem; font-weight: 300; letter-spacing: 0.1em; margin-bottom: 1rem; }
.contact-info p { color: rgba(255,255,255,0.7); margin-bottom: 1.5rem; line-height: 1.8; }
.contact-detail { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 0.8rem; color: rgba(255,255,255,0.7); font-size: 0.9rem; }
.contact-detail span { color: var(--accent-light); font-size: 1.1rem; }
.form-card { background: var(--card); border: 1px solid var(--border); border-radius: 4px; padding: 2.5rem; }
.form-row { display: flex; flex-direction: column; margin-bottom: 1.3rem; }
.form-row label { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.55); margin-bottom: 0.4rem; }
.form-row input, .form-row textarea, .form-row select {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 2px;
  color: var(--white);
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 0.2s;
  font-family: inherit;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus { border-color: var(--accent); }
.form-row textarea { resize: vertical; }
select option { background: #1a1a1a; }
.form-msg { padding: 0.7rem 1rem; border-radius: 2px; font-size: 0.9rem; margin-bottom: 1rem; display: none; }
.form-msg.show { display: block; }
.form-msg.info    { background: rgba(255,255,255,0.08); color: var(--white); }
.form-msg.success { background: rgba(40,167,69,0.2); color: #7dde9a; border: 1px solid rgba(40,167,69,0.4); }
.form-msg.error   { background: rgba(220,53,69,0.2); color: #f5a0a8; border: 1px solid rgba(220,53,69,0.4); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 0.85rem 2.5rem;
  background: var(--accent);
  color: var(--white);
  border: 1px solid var(--accent);
  border-radius: 2px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  font-family: inherit;
}
.btn:hover { background: var(--accent-light); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.3);
}
.btn-outline:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.6); transform: translateY(-1px); }

/* ===== LOADING ===== */
.loading { text-align: center; padding: 3rem; color: var(--muted); font-size: 0.9rem; letter-spacing: 0.05em; }

/* ===== FOOTER ===== */
footer {
  background: #050505;
  border-top: 1px solid rgba(42,100,150,0.2);
  text-align: center;
  padding: 2.5rem 1rem;
}
footer p { font-size: 0.82rem; color: var(--muted); margin-bottom: 0.5rem; }
footer a { color: var(--muted); text-decoration: none; margin: 0 0.8rem; font-size: 0.82rem; transition: color 0.2s; }
footer a:hover { color: var(--white); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  .featured-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: rgba(10,10,10,0.98); padding: 1rem; border-bottom: 1px solid var(--border); gap: 0.5rem; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.6rem 1rem; border-radius: 2px; }
  .nav-toggle { display: block; }
  .featured-grid { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .lightbox-nav { font-size: 1.4rem; padding: 0.4rem 0.7rem; }
}