:root{
  --sky: #EAF6FF;
  --sky-deep: #CDEBFF;
  --sun: #FFB800;
  --coral: #FF6F59;
  --leaf: #3DA35D;
  --ink: #1F3A5F;
  --paper: #FFFFFF;
  --shadow: rgba(31,58,95,0.16);
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--sky);
  font-family:'Nunito', sans-serif;
  color:var(--ink);
  overflow-x:hidden;
}
h1,h2,h3, .display{
  font-family:'Baloo 2', sans-serif;
}
a{color:inherit;}

/* ---------- Header / Hero ---------- */
header{
  position:relative;
  padding:28px 6vw 90px;
  background:linear-gradient(180deg, var(--sky-deep) 0%, var(--sky) 85%);
  overflow:hidden;
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:'Baloo 2', sans-serif;
  font-weight:800;
  font-size:1.4rem;
  color:var(--ink);
}
.logo-badge{
  width:44px;height:44px;border-radius:14px;
  background:var(--sun);
  display:flex;align-items:center;justify-content:center;
  font-size:1.5rem;
  box-shadow:0 6px 0 rgba(0,0,0,0.08);
  transform:rotate(-6deg);
}
.mascot-badge{
  display:flex; align-items:center; gap:10px;
  background:var(--paper);
  padding:8px 16px 8px 8px;
  border-radius:999px;
  box-shadow:0 6px 16px var(--shadow);
  font-weight:700;
  font-size:0.95rem;
}
.mascot-badge .owl{font-size:1.6rem;}

.nav-right{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}
.btn-admin{
  border:none;
  background:var(--ink);
  color:white;
  font-family:'Baloo 2';
  font-weight:700;
  font-size:0.88rem;
  padding:10px 18px;
  border-radius:999px;
  cursor:pointer;
  box-shadow:0 6px 14px var(--shadow);
  transition:transform .15s ease;
}
.btn-admin:hover{transform:translateY(-2px);}
.admin-panel{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  background:var(--paper);
  padding:6px 8px 6px 14px;
  border-radius:999px;
  box-shadow:0 6px 16px var(--shadow);
}
.admin-tag{
  font-weight:800;
  font-size:0.85rem;
  color:var(--leaf);
}
.btn-add-book, .btn-logout{
  border:none;
  font-family:'Baloo 2';
  font-weight:700;
  font-size:0.85rem;
  padding:8px 14px;
  border-radius:999px;
  cursor:pointer;
}
.btn-add-book{background:var(--sun); color:var(--ink);}
.btn-account{background:var(--sky-deep); color:var(--ink);}
.btn-logout{background:#FFE1DC; color:var(--coral);}

.hero{
  display:flex;
  align-items:center;
  gap:40px;
  margin-top:48px;
  flex-wrap:wrap;
}
.hero-text{flex:1 1 340px;}
.eyebrow{
  display:inline-block;
  background:var(--paper);
  color:var(--coral);
  font-weight:800;
  padding:6px 14px;
  border-radius:999px;
  font-size:0.85rem;
  margin-bottom:14px;
  box-shadow:0 4px 10px var(--shadow);
}
.hero h1{
  font-size:clamp(2.1rem, 5vw, 3.4rem);
  line-height:1.1;
  margin:0 0 16px;
  font-weight:800;
}
.hero h1 span{color:var(--coral);}
.hero p{
  font-size:1.15rem;
  max-width:480px;
  line-height:1.6;
  margin:0 0 26px;
}
.search-box{
  display:flex;
  gap:10px;
  background:var(--paper);
  padding:8px;
  border-radius:18px;
  box-shadow:0 10px 24px var(--shadow);
  max-width:480px;
}
.search-box input{
  flex:1;
  border:none;
  outline:none;
  font-family:'Nunito';
  font-size:1rem;
  padding:10px 14px;
  border-radius:12px;
  background:transparent;
  color:var(--ink);
}
.search-box button{
  border:none;
  background:var(--leaf);
  color:white;
  font-weight:800;
  font-family:'Baloo 2';
  padding:0 22px;
  border-radius:12px;
  cursor:pointer;
  font-size:1rem;
  transition:transform .15s ease;
}
.search-box button:hover{transform:scale(1.04);}

/* Bookshelf illustration */
.shelf-wrap{
  flex:1 1 300px;
  display:flex;
  justify-content:center;
}
.shelf{
  position:relative;
  width:min(360px, 90vw);
}
.plank{
  display:flex;
  align-items:flex-end;
  gap:6px;
  background:#B98452;
  border-radius:8px 8px 4px 4px;
  padding:14px 12px 10px;
  box-shadow: 0 10px 0 #9C6B3F, 0 18px 20px rgba(0,0,0,0.15);
  margin-bottom:26px;
}
.book-spine{
  border-radius:4px 4px 2px 2px;
  flex:1;
  display:flex;
  align-items:flex-start;
  justify-content:center;
  padding-top:8px;
  font-size:1.1rem;
  cursor:default;
  transition:transform .2s ease;
}
.book-spine:hover{transform:translateY(-8px) rotate(-1deg);}
.owl-perch{
  position:absolute;
  right:-6px;
  top:-58px;
  font-size:3rem;
  filter:drop-shadow(0 8px 6px rgba(0,0,0,0.15));
  animation:bob 3.2s ease-in-out infinite;
}
@keyframes bob{
  0%,100%{transform:translateY(0) rotate(-2deg);}
  50%{transform:translateY(-8px) rotate(2deg);}
}

/* ---------- Video section (dashboard, dekat pencarian) ---------- */
.video-section{
  margin-top:44px;
  position:relative;
  z-index:1;
}
.video-section .section-title h2{color:var(--ink);}
.video-section .section-title p{opacity:0.7; font-weight:600; font-size:0.9rem;}
.video-row{
  display:flex;
  gap:16px;
  overflow-x:auto;
  padding-bottom:6px;
}
.video-card{
  flex:0 0 220px;
  background:var(--paper);
  border-radius:18px;
  overflow:hidden;
  box-shadow:0 10px 20px var(--shadow);
  cursor:pointer;
  transition:transform .18s ease;
  position:relative;
}
.video-card:hover{transform:translateY(-4px);}
.video-thumb{
  height:120px;
  background:linear-gradient(135deg, var(--coral), var(--sun));
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:2.4rem;
  color:white;
  position:relative;
}
.video-thumb .play-badge{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(0,0,0,0.15);
  font-size:2.2rem;
  color:white;
}
.video-card .vinfo{padding:10px 12px 14px;}
.video-card .vinfo h4{
  margin:0 0 3px;
  font-size:0.95rem;
  font-family:'Baloo 2';
}
.video-card .vinfo p{
  margin:0;
  font-size:0.78rem;
  opacity:0.65;
  font-weight:600;
}
.video-card .vcontrols{
  position:absolute;
  top:8px; right:8px;
  display:flex;
  gap:6px;
  z-index:2;
}
.video-card .vcontrols button{
  background:rgba(255,255,255,0.9);
  border:none;
  border-radius:50%;
  width:28px;height:28px;
  font-size:0.85rem;
  cursor:pointer;
}
.video-empty{
  background:var(--paper);
  border-radius:16px;
  padding:24px;
  text-align:center;
  font-weight:700;
  opacity:0.7;
  flex:1;
}

/* ---------- Stats strip ---------- */
.stats{
  display:flex;
  gap:14px;
  justify-content:center;
  flex-wrap:wrap;
  margin:-46px 6vw 40px;
  position:relative;
  z-index:2;
}
.stat-card{
  background:var(--paper);
  padding:14px 22px;
  border-radius:16px;
  box-shadow:0 10px 20px var(--shadow);
  text-align:center;
  min-width:130px;
}
.stat-card .num{
  font-family:'Baloo 2';
  font-size:1.5rem;
  font-weight:800;
  color:var(--coral);
}
.stat-card .lbl{font-size:0.8rem; font-weight:700; color:var(--ink); opacity:0.75;}

/* ---------- Category chips ---------- */
main{padding:0 6vw 70px;}
section{max-width:1180px; margin:0 auto;}
.section-title{
  display:flex;
  align-items:baseline;
  gap:10px;
  margin-bottom:18px;
  flex-wrap:wrap;
}
.section-title h2{font-size:1.6rem; margin:0;}
.section-title p{margin:0; opacity:0.7; font-weight:600; font-size:0.95rem;}

.chips{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:34px;
}
.chip{
  border:2px solid transparent;
  background:var(--paper);
  padding:9px 18px;
  border-radius:999px;
  font-weight:800;
  font-family:'Baloo 2';
  font-size:0.92rem;
  cursor:pointer;
  box-shadow:0 4px 10px var(--shadow);
  transition:all .15s ease;
  color:var(--ink);
}
.chip:hover{transform:translateY(-2px);}
.chip.active{
  background:var(--ink);
  color:white;
}

/* ---------- Book grid ---------- */
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(210px, 1fr));
  gap:22px;
  margin-bottom:56px;
}
.card{
  background:var(--paper);
  border-radius:20px;
  overflow:hidden;
  box-shadow:0 10px 24px var(--shadow);
  cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease;
  display:flex;
  flex-direction:column;
}
.card:hover{
  transform:translateY(-6px) rotate(-0.5deg);
  box-shadow:0 16px 30px var(--shadow);
}
.cover{
  height:150px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:3.2rem;
  position:relative;
  overflow:hidden;
}
.cover img.cover-img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.cover .fav{
  position:absolute;
  top:10px; right:10px;
  background:rgba(255,255,255,0.85);
  border:none;
  border-radius:50%;
  width:34px;height:34px;
  font-size:1.1rem;
  cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.cover .delete-btn{
  position:absolute;
  top:10px; left:10px;
  background:rgba(255,255,255,0.85);
  border:none;
  border-radius:50%;
  width:34px;height:34px;
  font-size:1rem;
  cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.cover .delete-btn:hover{background:var(--coral); color:white;}
.cover .edit-btn{
  position:absolute;
  bottom:10px; left:10px;
  background:rgba(255,255,255,0.85);
  border:none;
  border-radius:50%;
  width:34px;height:34px;
  font-size:1rem;
  cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.cover .edit-btn:hover{background:var(--sun);}

.cover-preview-wrap{
  margin-top:10px;
  display:flex;
  align-items:center;
  gap:12px;
}
.cover-preview{
  width:70px;
  height:70px;
  object-fit:cover;
  border-radius:12px;
  border:2px solid var(--sky-deep);
}
.remove-cover-btn{
  border:none;
  background:#FFE1DC;
  color:var(--coral);
  font-family:'Baloo 2';
  font-weight:700;
  font-size:0.8rem;
  padding:8px 12px;
  border-radius:999px;
  cursor:pointer;
}
.card-body{padding:14px 16px 18px; flex:1; display:flex; flex-direction:column;}
.card-body .cat{
  font-size:0.72rem;
  font-weight:800;
  color:var(--leaf);
  text-transform:uppercase;
  letter-spacing:0.04em;
  margin-bottom:4px;
}
.card-body h3{
  font-size:1.05rem;
  margin:0 0 4px;
  line-height:1.25;
}
.card-body .author{
  font-size:0.85rem;
  opacity:0.65;
  font-weight:700;
  margin-bottom:10px;
}
.level{
  margin-top:auto;
  font-size:0.75rem;
  font-weight:800;
  background:var(--sky-deep);
  color:var(--ink);
  padding:5px 10px;
  border-radius:999px;
  display:inline-block;
  width:fit-content;
}
.empty{
  text-align:center;
  padding:50px 20px;
  background:var(--paper);
  border-radius:20px;
  font-weight:700;
  font-size:1.1rem;
}

/* ---------- How it works ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(220px,1fr));
  gap:20px;
  margin-bottom:20px;
}
.step{
  background:var(--paper);
  border-radius:18px;
  padding:22px 20px;
  box-shadow:0 8px 18px var(--shadow);
}
.step .icon{font-size:2rem; margin-bottom:10px; display:block;}
.step h3{margin:0 0 6px; font-size:1.05rem;}
.step p{margin:0; font-size:0.92rem; line-height:1.5; opacity:0.8;}

footer{
  text-align:center;
  padding:26px;
  font-size:0.85rem;
  opacity:0.6;
  font-weight:700;
}

/* ---------- Modal ---------- */
.overlay{
  position:fixed; inset:0;
  background:rgba(31,58,95,0.45);
  display:none;
  align-items:center;
  justify-content:center;
  padding:20px;
  z-index:50;
}
.overlay.show{display:flex;}
.modal{
  background:var(--paper);
  border-radius:24px;
  max-width:440px;
  width:100%;
  padding:0 0 26px;
  overflow:hidden;
  position:relative;
  animation:pop .22s ease;
}
@keyframes pop{from{transform:scale(0.9); opacity:0;} to{transform:scale(1); opacity:1;}}
.modal-cover{
  height:150px;
  display:flex;align-items:center;justify-content:center;
  font-size:4rem;
  overflow:hidden;
}
.modal-cover img.cover-img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.modal-close{
  position:absolute; top:12px; right:12px;
  background:rgba(255,255,255,0.9);
  border:none; border-radius:50%;
  width:34px;height:34px;
  font-size:1.1rem;
  cursor:pointer;
}
.modal-body{padding:20px 24px 0;}
.modal-body .cat{font-size:0.75rem; font-weight:800; color:var(--leaf); text-transform:uppercase;}
.modal-body h2{margin:6px 0 2px; font-size:1.4rem;}
.modal-body .author{opacity:0.65; font-weight:700; font-size:0.9rem; margin-bottom:14px;}
.modal-body p.desc{line-height:1.6; font-size:0.98rem; margin-bottom:18px;}
.modal-actions{display:flex; gap:10px; padding:0 24px;}
.modal-actions button{
  flex:1;
  border:none;
  padding:12px;
  border-radius:12px;
  font-family:'Baloo 2';
  font-weight:700;
  font-size:0.95rem;
  cursor:pointer;
}
.btn-primary{background:var(--coral); color:white;}
.btn-secondary{background:var(--sky-deep); color:var(--ink);}
.btn-delete{
  flex:1;
  border:none;
  padding:12px;
  border-radius:12px;
  font-family:'Baloo 2';
  font-weight:700;
  font-size:0.95rem;
  cursor:pointer;
  background:#FFE1DC;
  color:var(--coral);
}

/* ---------- Forms (login & tambah buku) ---------- */
.small-modal{max-width:420px;}
.video-modal{max-width:560px; padding-bottom:20px;}
.video-modal .video-wrap{margin:0; border-radius:24px 24px 0 0;}
.form-icon{
  font-size:2.4rem;
  text-align:center;
  margin-bottom:6px;
}
.field{margin-bottom:14px;}
.field label{
  display:block;
  font-weight:800;
  font-size:0.85rem;
  margin-bottom:6px;
  color:var(--ink);
}
.field input, .field select, .field textarea{
  width:100%;
  border:2px solid var(--sky-deep);
  border-radius:12px;
  padding:10px 12px;
  font-family:'Nunito';
  font-size:0.95rem;
  color:var(--ink);
  background:var(--sky);
  outline:none;
  resize:vertical;
}
.field input:focus, .field select:focus, .field textarea:focus{
  border-color:var(--coral);
}
.field-row{
  display:flex;
  gap:12px;
}
.field-row .field{flex:1;}
.form-error{
  color:var(--coral);
  font-weight:700;
  font-size:0.85rem;
  margin:-4px 0 10px;
}
.form-success{
  color:var(--leaf);
  font-weight:700;
  font-size:0.85rem;
  margin:-4px 0 10px;
}
.field-hint{
  font-size:0.78rem;
  opacity:0.65;
  font-weight:600;
  margin:6px 0 0;
  line-height:1.4;
}
.field input[type="file"]{
  background:var(--paper);
  padding:8px;
  cursor:pointer;
}

.resource-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin:-6px 0 18px;
}
.resource-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  text-decoration:none;
  background:var(--sky-deep);
  color:var(--ink);
  font-family:'Baloo 2';
  font-weight:700;
  font-size:0.85rem;
  padding:9px 14px;
  border-radius:999px;
  border:none;
  cursor:pointer;
}
.resource-btn:hover{filter:brightness(0.96);}

.video-wrap{
  margin:-4px 0 16px;
  border-radius:14px;
  overflow:hidden;
  background:#000;
}
.video-wrap iframe, .video-wrap video{
  width:100%;
  aspect-ratio:16/9;
  display:block;
  border:none;
}

.has-file{
  margin-top:6px;
  font-size:0.7rem;
  font-weight:800;
  color:var(--leaf);
  display:block;
}
.has-video{
  margin-top:4px;
  font-size:0.7rem;
  font-weight:800;
  color:var(--coral);
  display:block;
}

@media (max-width:640px){
  header{padding:22px 5vw 70px;}
  .stats{margin:-40px 5vw 34px;}
}