/* =========================================================
   Buku Indah — Main Stylesheet
   ========================================================= */
:root{
	--bi-accent: #d97757;
	--bi-accent-dark: #b95f42;
	--bi-ink: #201a17;
	--bi-ink-soft: #5b524c;
	--bi-cream: #faf6f1;
	--bi-cream-dark: #f0e8de;
	--bi-line: #e7ddd0;
	--bi-white: #ffffff;
	--bi-success: #2f8f5b;
	--bi-warn: #c98a1c;
	--bi-danger: #c94f4f;
	--bi-radius: 16px;
	--bi-radius-sm: 10px;
	--bi-shadow: 0 10px 30px -12px rgba(32, 26, 23, .18);
	--bi-font-heading: 'Poppins', sans-serif;
	--bi-font-body: 'Poppins', sans-serif;
	--bi-font-serif: 'Lora', serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
	margin:0;
	font-family:var(--bi-font-body);
	color:var(--bi-ink);
	background:var(--bi-cream);
	line-height:1.6;
	font-size:16px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{font-family:var(--bi-font-heading);font-weight:700;line-height:1.25;margin:0 0 .5em}
.screen-reader-text{position:absolute;left:-9999px}

.bi-container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- Buttons ---------- */
.bi-btn{
	display:inline-flex;align-items:center;justify-content:center;gap:8px;
	padding:12px 22px;border-radius:999px;font-weight:600;font-size:.95rem;
	border:2px solid transparent;cursor:pointer;transition:.2s ease;white-space:nowrap;
}
.bi-btn-primary{background:var(--bi-accent);color:#fff}
.bi-btn-primary:hover{background:var(--bi-accent-dark)}
.bi-btn-outline{background:transparent;border-color:var(--bi-ink);color:var(--bi-ink)}
.bi-btn-outline:hover{background:var(--bi-ink);color:#fff}
.bi-btn-wa{background:#25D366;color:#fff}
.bi-btn-wa:hover{background:#1ebe5a}
.bi-btn-lg{padding:16px 30px;font-size:1.05rem}
.bi-btn-block{width:100%}

/* ---------- Header ---------- */
.bi-header{position:sticky;top:0;z-index:50;background:rgba(250,246,241,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--bi-line)}
.bi-header-inner{display:flex;align-items:center;gap:32px;padding:16px 24px}
.bi-logo{display:flex;align-items:center;gap:8px;font-family:var(--bi-font-heading);font-weight:800;font-size:1.3rem;color:var(--bi-ink)}
.bi-logo-mark{font-size:1.4rem}
.bi-nav{flex:1}
.bi-nav-list{display:flex;gap:28px}
.bi-nav-list a{font-weight:600;color:var(--bi-ink-soft);padding:8px 0;border-bottom:2px solid transparent}
.bi-nav-list a:hover{color:var(--bi-accent);border-color:var(--bi-accent)}
.bi-header-actions{display:flex;align-items:center;gap:14px}
.bi-search-form{display:flex;align-items:center;background:var(--bi-white);border:1px solid var(--bi-line);border-radius:999px;padding:6px 6px 6px 16px}
.bi-search-form input{border:0;background:transparent;outline:0;width:200px;font-family:inherit}
.bi-search-form button{border:0;background:var(--bi-accent);color:#fff;width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer}
.bi-icon-btn{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--bi-white);border:1px solid var(--bi-line)}
.bi-icon-btn:hover{background:var(--bi-accent);color:#fff;border-color:var(--bi-accent)}
.bi-menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.bi-menu-toggle span{width:24px;height:2px;background:var(--bi-ink)}

/* ---------- Hero ---------- */
.bi-hero{padding:70px 0;overflow:hidden}
.bi-hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.bi-eyebrow{display:inline-block;background:var(--bi-cream-dark);color:var(--bi-accent-dark);padding:6px 16px;border-radius:999px;font-weight:700;font-size:.8rem;letter-spacing:.03em;text-transform:uppercase;margin-bottom:18px}
.bi-hero-text h1{font-size:clamp(2rem,4vw,3rem);margin-bottom:20px}
.bi-hero-text p{color:var(--bi-ink-soft);font-size:1.1rem;max-width:520px;margin-bottom:28px}
.bi-hero-cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:36px}
.bi-hero-stats{display:flex;gap:36px}
.bi-hero-stats strong{display:block;font-size:1.5rem;font-family:var(--bi-font-heading)}
.bi-hero-stats span{color:var(--bi-ink-soft);font-size:.85rem}
.bi-hero-visual{display:flex;align-items:center;justify-content:center}
.bi-hero-stack{position:relative;width:280px;height:340px}
.bi-hero-book{position:absolute;border-radius:12px;box-shadow:var(--bi-shadow)}
.bi-hero-book-1{width:180px;height:250px;background:linear-gradient(135deg,var(--bi-accent),var(--bi-accent-dark));top:0;left:20px;transform:rotate(-8deg)}
.bi-hero-book-2{width:180px;height:250px;background:linear-gradient(135deg,#3d3733,#201a17);top:40px;left:80px;transform:rotate(6deg)}
.bi-hero-book-3{width:180px;height:250px;background:linear-gradient(135deg,#e8c99b,#d9a76b);top:20px;left:50px;transform:rotate(-1deg)}

/* ---------- Sections ---------- */
.bi-section{padding:64px 0}
.bi-section-alt{background:var(--bi-cream-dark)}
.bi-section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}
.bi-section-title{font-size:1.8rem}
.bi-link-arrow{font-weight:700;color:var(--bi-accent)}

/* ---------- Kategori ---------- */
.bi-kategori-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}
.bi-kategori-pill{background:var(--bi-white);border:1px solid var(--bi-line);border-radius:var(--bi-radius-sm);padding:18px;text-align:center;transition:.2s}
.bi-kategori-pill:hover{border-color:var(--bi-accent);transform:translateY(-3px)}
.bi-kategori-pill span{display:block;font-weight:700;margin-bottom:4px}
.bi-kategori-pill small{color:var(--bi-ink-soft)}

/* ---------- Grid & Cards ---------- */
.bi-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:24px}
.bi-card{background:var(--bi-white);border-radius:var(--bi-radius);overflow:hidden;box-shadow:var(--bi-shadow);display:flex;flex-direction:column;transition:.2s}
.bi-card:hover{transform:translateY(-4px)}
.bi-card-thumb{position:relative;aspect-ratio:3/4;background:var(--bi-cream-dark);overflow:hidden;display:block}
.bi-card-thumb img{width:100%;height:100%;object-fit:cover}
.bi-card-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:var(--bi-line);font-size:2.5rem}
.bi-card-body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1}
.bi-card-kategori{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--bi-accent)}
.bi-card-title{font-size:1.02rem;margin:0}
.bi-card-title a:hover{color:var(--bi-accent)}
.bi-card-harga{display:flex;align-items:baseline;gap:8px;margin-top:auto}
.bi-harga-now{font-weight:800;font-size:1.1rem}
.bi-harga-lg{font-size:1.8rem}
.bi-harga-coret{text-decoration:line-through;color:var(--bi-ink-soft);font-size:.85rem}

.bi-badge{position:absolute;top:10px;left:10px;font-size:.68rem;font-weight:700;padding:4px 10px;border-radius:999px;color:#fff}
.bi-badge-in{background:var(--bi-success)}
.bi-badge-low{background:var(--bi-warn)}
.bi-badge-out{background:var(--bi-danger)}

/* ---------- Why us ---------- */
.bi-why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:28px;text-align:center}
.bi-why-icon{font-size:2.2rem;margin-bottom:10px}

/* ---------- Catalog page ---------- */
.bi-page-head{padding:32px 0 8px}
.bi-page-title{font-size:2rem}
.bi-breadcrumb{color:var(--bi-ink-soft);font-size:.9rem;margin-bottom:8px}
.bi-breadcrumb a:hover{color:var(--bi-accent)}
.bi-catalog-layout{display:grid;grid-template-columns:260px 1fr;gap:36px;padding:24px 0 64px;align-items:start}
.bi-catalog-filter{background:var(--bi-white);border:1px solid var(--bi-line);border-radius:var(--bi-radius);padding:20px;position:sticky;top:96px}
.bi-filter-group{margin-bottom:18px}
.bi-filter-group label{display:block;font-weight:700;font-size:.85rem;margin-bottom:6px}
.bi-filter-group input,.bi-filter-group select{width:100%;padding:10px 12px;border:1px solid var(--bi-line);border-radius:8px;font-family:inherit}
.bi-pagination{display:flex;gap:8px;justify-content:center;margin-top:36px}
.bi-pagination .page-numbers{padding:8px 14px;border-radius:8px;background:var(--bi-white);border:1px solid var(--bi-line)}
.bi-pagination .page-numbers.current{background:var(--bi-accent);color:#fff;border-color:var(--bi-accent)}

/* ---------- Single book ---------- */
.bi-book-detail{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;padding:12px 0 48px}
.bi-book-media img{border-radius:var(--bi-radius);box-shadow:var(--bi-shadow);width:100%;aspect-ratio:3/4;object-fit:cover}
.bi-book-placeholder{border-radius:var(--bi-radius);aspect-ratio:3/4;font-size:4rem}
.bi-book-title{font-size:2rem;margin-bottom:6px}
.bi-book-penulis{color:var(--bi-ink-soft);margin-bottom:18px}
.bi-book-harga-box{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:24px}
.bi-book-harga-box .bi-badge{position:static}
.bi-wa-note{color:var(--bi-ink-soft);font-size:.85rem;margin-top:10px}
.bi-spec-table{width:100%;border-collapse:collapse;margin-top:28px}
.bi-spec-table th,.bi-spec-table td{text-align:left;padding:10px 0;border-bottom:1px solid var(--bi-line)}
.bi-spec-table th{width:160px;color:var(--bi-ink-soft);font-weight:600}
.bi-book-sinopsis{padding-bottom:48px}
.bi-book-content{font-family:var(--bi-font-serif);font-size:1.05rem;color:var(--bi-ink-soft);max-width:800px}

/* ---------- Auth ---------- */
.bi-auth-wrap{padding:64px 0;display:flex;justify-content:center}
.bi-auth-box{background:var(--bi-white);border-radius:var(--bi-radius);box-shadow:var(--bi-shadow);padding:40px;width:100%;max-width:420px}
.bi-auth-title{text-align:center;font-size:1.6rem;margin-bottom:24px}
.bi-form{display:flex;flex-direction:column;gap:16px}
.bi-field label{display:block;font-weight:700;margin-bottom:6px;font-size:.9rem}
.bi-field input{width:100%;padding:12px 14px;border:1px solid var(--bi-line);border-radius:10px;font-family:inherit}
.bi-field input:focus{outline:2px solid var(--bi-accent);border-color:var(--bi-accent)}
.bi-form-errors{background:#fdeceb;color:var(--bi-danger);padding:12px 16px;border-radius:10px;font-size:.9rem}
.bi-form-footer{text-align:center;font-size:.9rem;color:var(--bi-ink-soft)}
.bi-form-footer a{color:var(--bi-accent);font-weight:700}
.bi-notice{background:var(--bi-white);padding:20px;border-radius:12px;text-align:center}
.bi-account{background:var(--bi-white);text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}
.bi-account-avatar img{border-radius:50%}

/* ---------- Blog ---------- */
.bi-blog-layout{display:grid;grid-template-columns:1fr 280px;gap:40px;padding:40px 0 64px}
.bi-post-card{background:var(--bi-white);border-radius:var(--bi-radius);overflow:hidden;box-shadow:var(--bi-shadow);margin-bottom:28px}
.bi-post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.bi-post-body{padding:20px}
.bi-post-date{color:var(--bi-ink-soft);font-size:.8rem}
.widget{background:var(--bi-white);border-radius:var(--bi-radius);padding:20px;margin-bottom:20px}
.bi-404{text-align:center;padding:100px 0}
.bi-404 h1{font-size:5rem;color:var(--bi-accent)}

/* ---------- Comments ---------- */
.bi-comments-wrap,.bi-comments{padding:32px 0}
.bi-comment-list{margin-top:20px}

/* ---------- WhatsApp floating button ---------- */
.bi-wa-float{position:fixed;bottom:24px;right:24px;width:58px;height:58px;background:#25D366;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(0,0,0,.25);z-index:60}
.bi-wa-float svg{width:28px;height:28px}

/* ---------- Footer ---------- */
.bi-footer{background:var(--bi-ink);color:#e8e0d8;padding-top:56px}
.bi-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px}
.bi-footer .bi-logo{color:#fff}
.bi-footer-brand p{color:#b7ada3;margin-top:12px}
.footer-widget-title{color:#fff;font-size:1rem;margin-bottom:14px}
.bi-footer-menu li{margin-bottom:8px}
.bi-footer-menu a{color:#c9beb3}
.bi-footer-menu a:hover{color:#fff}
.bi-footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;text-align:center;color:#9c9088;font-size:.85rem}

/* ---------- Responsive ---------- */
@media (max-width: 960px){
	.bi-hero-inner{grid-template-columns:1fr}
	.bi-hero-visual{order:-1}
	.bi-book-detail{grid-template-columns:1fr}
	.bi-catalog-layout{grid-template-columns:1fr}
	.bi-blog-layout{grid-template-columns:1fr}
	.bi-footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 720px){
	.bi-search-form{display:none}
	.bi-nav{position:fixed;top:73px;left:0;right:0;background:var(--bi-cream);border-bottom:1px solid var(--bi-line);transform:translateY(-150%);opacity:0;transition:.25s;padding:16px 24px}
	.bi-nav.is-open{transform:translateY(0);opacity:1}
	.bi-nav-list{flex-direction:column;gap:4px}
	.bi-nav-list a{display:block;padding:10px 0}
	.bi-menu-toggle{display:flex}
	.bi-footer-grid{grid-template-columns:1fr}
	.bi-hero-stats{flex-wrap:wrap;gap:20px}
}