/* ============================================================
   AIO Digital Library - Front Website Styles
   ============================================================ */

/* ---- NAVBAR ---- */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 999; padding: 0 24px; height: 70px; display: flex; align-items: center; justify-content: space-between; transition: all 0.3s ease; }
.navbar.scrolled { background: var(--dark); box-shadow: 0 2px 20px rgba(0,0,0,0.3); }
.navbar-transparent { background: transparent; }
.nav-brand { display: flex; align-items: center; gap: 12px; }
.nav-brand .brand-icon { width: 42px; height: 42px; background: var(--accent); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 20px; }
.nav-brand .brand-text .name { font-family: 'Playfair Display', serif; font-size: 18px; font-weight: 700; color: #fff; line-height: 1; }
.nav-brand .brand-text .sub  { font-size: 10px; color: rgba(255,255,255,0.55); letter-spacing: 1px; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a { padding: 8px 14px; border-radius: 6px; font-size: 13.5px; font-weight: 500; color: rgba(255,255,255,0.85); transition: var(--transition); }
.nav-links a:hover, .nav-links a.active { color: var(--accent); background: rgba(255,255,255,0.08); }
.nav-actions { display: flex; gap: 10px; align-items: center; }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 24px; cursor: pointer; }
.mobile-menu { display: none; position: fixed; inset: 0; background: var(--dark); z-index: 998; flex-direction: column; padding: 90px 24px 24px; gap: 8px; }
.mobile-menu.open { display: flex; }
.mobile-menu a { padding: 14px 18px; border-radius: var(--radius-sm); color: rgba(255,255,255,0.85); font-size: 16px; border-bottom: 1px solid rgba(255,255,255,0.08); }

/* ---- HERO ---- */
.hero { min-height: 100vh; background: linear-gradient(160deg, var(--dark) 0%, var(--primary) 55%, #1e4d7b 100%); display: flex; align-items: center; position: relative; overflow: hidden; padding-top: 70px; }
.hero::before { content: ''; position: absolute; top: -60%; right: -20%; width: 700px; height: 700px; border-radius: 50%; background: radial-gradient(circle, rgba(212,160,23,0.12), transparent 70%); pointer-events: none; }
.hero::after  { content: ''; position: absolute; bottom: -30%; left: -10%; width: 500px; height: 500px; border-radius: 50%; background: radial-gradient(circle, rgba(37,99,168,0.2), transparent 70%); pointer-events: none; }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; min-height: calc(100vh - 70px); padding: 60px 0; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(212,160,23,0.18); border: 1px solid rgba(212,160,23,0.35); color: var(--accent-light); padding: 5px 14px; border-radius: 20px; font-size: 12px; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 20px; }
.hero h1 { font-family: 'Playfair Display', serif; font-size: clamp(32px, 4.5vw, 58px); font-weight: 700; color: #fff; line-height: 1.15; margin-bottom: 20px; }
.hero h1 span { color: var(--accent); }
.hero-desc { font-size: 16px; color: rgba(255,255,255,0.7); max-width: 480px; margin-bottom: 32px; line-height: 1.7; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 32px; margin-top: 48px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.12); }
.hero-stat .value { font-size: 28px; font-weight: 700; color: var(--accent); }
.hero-stat .label { font-size: 12px; color: rgba(255,255,255,0.5); margin-top: 2px; }
.hero-visual { display: flex; justify-content: center; align-items: center; position: relative; }
.hero-card { background: rgba(255,255,255,0.08); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.15); border-radius: 20px; padding: 28px; width: 340px; }
.hero-card-title { font-size: 12px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--accent); margin-bottom: 16px; font-weight: 700; }
.hero-card-item { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.08); }
.hero-card-item:last-child { border-bottom: none; }
.hci-icon { width: 38px; height: 38px; background: rgba(255,255,255,0.1); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.hci-text .hci-name { font-size: 13px; font-weight: 600; color: #fff; }
.hci-text .hci-sub  { font-size: 11px; color: rgba(255,255,255,0.5); }
.hci-avail { margin-left: auto; font-size: 11px; font-weight: 700; color: var(--success); background: rgba(34,197,94,0.15); padding: 2px 8px; border-radius: 20px; }

/* ---- SECTIONS ---- */
.section { padding: 80px 0; }
.section-alt { background: #f0f4f9; }
.section-dark { background: var(--dark); }
.section-label { font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
.section-title { font-family: 'Playfair Display', serif; font-size: clamp(24px, 3vw, 38px); font-weight: 700; color: var(--dark); margin-bottom: 16px; }
.section-dark .section-title { color: #fff; }
.section-sub { font-size: 16px; color: var(--text-muted); max-width: 560px; line-height: 1.7; }
.section-head { text-align: center; margin-bottom: 52px; }
.section-head .section-sub { margin: 0 auto; }
.divider { display: block; width: 48px; height: 3px; background: var(--accent); border-radius: 2px; margin: 14px auto 0; }

/* ---- FEATURES GRID ---- */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: 24px; }
.feature-card { background: var(--bg-card); border-radius: var(--radius); padding: 28px; border: 1px solid var(--border); transition: var(--transition); }
.feature-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
.feature-icon { width: 54px; height: 54px; border-radius: var(--radius-sm); background: linear-gradient(135deg, var(--primary), var(--primary-light)); display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 18px; }
.feature-card h4 { font-size: 16px; margin-bottom: 8px; }
.feature-card p  { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* ---- BOOKS SECTION ---- */
.public-book-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px,1fr)); gap: 20px; }
.pub-book-card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); }
.pub-book-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.pub-book-cover { height: 230px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 56px; position: relative; }
.pub-new-tag { position: absolute; top: 10px; right: 10px; background: var(--accent); color: var(--dark); font-size: 10px; font-weight: 700; padding: 3px 8px; border-radius: 4px; letter-spacing: 0.5px; }
.pub-book-info { padding: 14px; }
.pub-book-title  { font-size: 13px; font-weight: 700; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.pub-book-author { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.pub-book-footer { padding: 0 14px 12px; display: flex; align-items: center; justify-content: space-between; }
.avail-tag { font-size: 11px; font-weight: 600; }
.avail-tag.avail  { color: var(--success); }
.avail-tag.unavail{ color: var(--danger); }

/* ---- NOTICES ---- */
.notices-list { display: flex; flex-direction: column; gap: 14px; }
.notice-item { background: #fff; border-radius: var(--radius-sm); padding: 18px 20px; border-left: 4px solid var(--primary-light); box-shadow: var(--shadow); }
.notice-item.urgent { border-left-color: var(--danger); }
.notice-title { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.notice-date  { font-size: 12px; color: var(--text-muted); }
.notice-desc  { font-size: 13px; color: var(--text-muted); margin-top: 6px; }

/* ---- ROLE CARDS ---- */
.roles-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 20px; }
.role-card { text-align: center; background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.12); border-radius: var(--radius); padding: 28px 16px; transition: var(--transition); cursor: pointer; }
.role-card:hover { background: rgba(255,255,255,0.13); transform: translateY(-4px); }
.role-card .r-icon { font-size: 42px; margin-bottom: 14px; display: block; }
.role-card .r-name { font-size: 15px; font-weight: 700; color: #fff; }
.role-card .r-desc { font-size: 12px; color: rgba(255,255,255,0.5); margin-top: 6px; }

/* ---- FOOTER ---- */
.site-footer { background: var(--dark); color: rgba(255,255,255,0.7); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-about .about-name { font-family: 'Playfair Display', serif; font-size: 20px; font-weight: 700; color: var(--accent); margin-bottom: 12px; }
.footer-about p { font-size: 13px; line-height: 1.7; }
.footer-col h5 { font-size: 13px; font-weight: 700; color: #fff; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 14px; }
.footer-col a  { display: block; font-size: 13px; color: rgba(255,255,255,0.55); margin-bottom: 8px; transition: var(--transition); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact-item { display: flex; gap: 10px; font-size: 13px; margin-bottom: 10px; }
.footer-bottom { margin-top: 40px; padding: 16px 0; border-top: 1px solid rgba(255,255,255,0.08); text-align: center; font-size: 12px; color: rgba(255,255,255,0.35); }

/* ---- SEARCH HERO ---- */
.hero-search { display: flex; background: rgba(255,255,255,0.12); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.2); border-radius: 50px; overflow: hidden; max-width: 500px; }
.hero-search input { flex: 1; background: none; border: none; outline: none; padding: 14px 20px; font-size: 15px; color: #fff; }
.hero-search input::placeholder { color: rgba(255,255,255,0.5); }
.hero-search button { background: var(--accent); color: var(--dark); border: none; padding: 0 24px; font-size: 16px; cursor: pointer; font-weight: 700; transition: var(--transition); }
.hero-search button:hover { background: var(--accent-light); }

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero-desc { margin: 0 auto 32px; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 52px 0; }
}