:root{
  --bg1: #f5f8ff;
  --bg2: #eaf1ff;
  --card: #ffffff;
  --text: #071022;
  --muted: #6b7280;
  --accent: #4f8ef6;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(5,10,25,0.08);
}
[data-theme="dark"]{
  --bg1: #071427;
  --bg2: #061226;
  --card: #4E1010; /* Aslida #141c2c yoki shunga yaqin bo'lishi kerak. Sizning original kodingizdagi #4E1010 qoldirildi. */
  --text: #e6eefb;
  --muted: #9aa6bd;
  --accent: #6ea3ff;
  --shadow: 0 12px 40px rgba(0,0,0,0.6);
}

/* ================================================= */
/* BASE STYLES */
/* ================================================= */
*{box-sizing:border-box}
html,body{
  min-height: 100vh;
  margin:0;
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  background: linear-gradient(180deg,var(--bg1),var(--bg2) 140%);
  color:var(--text);
}

/* Ensure header space so fixed topbar doesn't cover content */
body {
  padding-top: 80px;
  transition: background .2s, color .2s;
  /* ✨ BODY ga ham overflow-x ni yashiramiz, agar biror narsa to'liq chiqa olsa */
  overflow-x: hidden;
}

/* ================================================= */
/* TOPBAR fixed */
/* ================================================= */
.topbar{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1200;
  background: linear-gradient(180deg, rgba(255,255,255,0.7), rgba(255,255,255,0.4));
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(16,24,40,0.04);
  padding: 14px 16px;
}
[data-theme="dark"] .topbar{
  background: linear-gradient(180deg, rgba(8,12,20,0.95), rgba(8,12,20,0.9));
  border-bottom: 1px solid rgba(255,255,255,0.03);
}
.topbar-inner{ max-width:1100px; margin:0 auto; display:flex; align-items:center; justify-content:space-between; gap:12px; }

/* Brand */
.brand{ display:flex; gap:12px; align-items:center; min-width:0; }
.logo{ width:48px; height:48px; border-radius:12px; display:flex; align-items:center; justify-content:center; color:#fff; font-weight:700; background: linear-gradient(135deg,var(--accent), #82d1ff); box-shadow:0 8px 24px rgba(79,142,246,0.16); }
.brand-text .app-name{ font-weight:700; font-size:16px; white-space:nowrap; }
.brand-text .app-sub{ font-size:13px; color:var(--muted); }

/* theme toggle */
.theme-toggle{ background:transparent; border:none; font-size:20px; cursor:pointer; padding:8px; border-radius:10px; color:var(--text); }
/* auth area added from html */
.auth-area{ display: flex; align-items: center; gap: 10px; }
.auth-area a{ text-decoration: none; color: var(--accent); font-weight: 600; font-size: 14px; }
.auth-area .avatar{ width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }


/* Search area (below header) */
.search-area{ max-width:1100px; margin:10px auto 0; padding:0 16px; }
.search-area input{
  width:100%; padding:15px 15px; border-radius:100px; border:1px solid rgba(16,24,40,0.06); background:var(--card); outline:none; color:inherit;
}

/* ================================================= */
/* MAIN CONTENT LAYOUT - KARTALAR MUAMMOLARINI TO'G'IRLASH UCHUN */
/* ================================================= */
.main{
  max-width: 1100px;
  margin: 18px auto;
  padding: 0 16px 80px;

  /* ✨ TO'G'RILASH 1: Flex konteyner qilib, ichidagi hamma narsani markazga olamiz */
  display: flex;
  flex-direction: column;
  align-items: center; /* Gorizontal markazlashtirish */
  width: 100%;
}
.page-title{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  margin-bottom:12px;
  width: 100%; /* Kenglikni to'liq egallaydi */
  max-width: 720px; /* Kartalar bilan mos kelishi uchun qo'shildi */
}
.page-title h1{ margin:0; font-size:20px; }
.small{ color:var(--muted); font-size:13px; }

/* SPLASH */
.splash{ display:none; text-align:center; color:var(--muted); padding:36px; border-radius:12px; }

/* ================================================= */
/* CARDS GRID/CONTAINER - Kartalar ro'yxatini ushlab turuvchi */
/* ================================================= */
.cards {
    /* ✨ TO'G'RILASH 2: Kartalar to'plamini max. kenglikda ushlab turamiz */
    width: 100%;
    max-width: 720px; /* Kartalar gorizontal ravishda 720px dan oshmasligini ta'minlaydi */
    margin: 0; /* `.main` align-items: center bo'lgani uchun margin 0 bo'ladi */
    padding: 0;
}

/* ================================================= */
/* CARD ITEM */
/* ================================================= */
.card {
  background: var(--card);
  padding: 16px;
  border-radius: 14px;
  box-shadow: var(--shadow);

  display: flex;
  flex-direction: column;
  gap: 8px;

  /* ✨ TO'G'RILASH 3: Kartalarning yon tomonga surilib ketishini oldini olish uchun */
  width: 100%; /* Asosiy konteynerning 100% ni egallaydi */
  max-width: 400px; /* Eng katta kartaning o'lchami */

  margin: 0 auto 12px auto; /* Karta o'zini o'rtaga oladi va pastdan bo'shliq qoldiradi */

  transition: transform .18s ease;
}

.card:hover {
  transform: translateY(-4px);
}

.card h3 {
  margin: 0;
  font-size: 15px;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
}

.card .meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}

/* TAG / PILL */
.pill {
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(79, 142, 246, 0.08);
  color: var(--accent);
  font-weight: 700;
  font-size: 12px;
}

/* buttons in card */
.row-right{ margin-left:auto; display:flex; gap:8px; align-items:center; }
.btn{ padding:8px 12px; border-radius:10px; border:1px solid rgba(16,24,40,0.06); background:transparent; cursor:pointer; }
.btn.primary{ background:var(--accent); color:#fff; border:none; }

/* ================================================= */
/* TABBAR bottom */
/* ================================================= */
.tabbar{
  overflow-x: auto;
  position: fixed;
  left: 10px; right: 10px; bottom: 12px;
  z-index: 1200;
  background: var(--card); /* Original koddagi background: var(--card) qoldirildi */
  border-radius: 14px;
  box-shadow: 0 12px 30px rgba(60, 255, 0, 0.76); /* Original koddagi yashil soya qoldirildi */
  display:flex;
  justify-content:flex-start; /* Tablar boshidan boshlanishi uchun */
  padding:10px;
  gap:8px;
  /* ✨ Tabbar ichidagi tugmalar noto'g'ri joylashishi uchun ortiqcha paddinglarni olib tashlash */
  -webkit-overflow-scrolling: touch; /* iOS da surishni yaxshilaydi */
}

/* Tab tugmasi stillarini alohida to'g'irlash */
.tabbar .tab {
  background:transparent;
  border:none;
  padding:10px 12px;
  border-radius:10px;
  color:var(--text);
  font-weight:700;
  cursor:pointer;
  /* Tabbar ichidagi .tab uchun margin va paddinglar tug'irlanadi */
  margin: 0;
}

.tabbar .tab.active{
  background: linear-gradient(90deg, rgba(79,142,246,0.08), rgba(130,209,255,0.04));
  color:var(--accent);
}

.tap{
  height: 40px;
  min-width: 100px;

  display: flex;
  align-items: center;
  justify-content: center;

  text-align: center;
  line-height: 1.2;

  font-size: 14px;
  font-weight: 600;

  padding: 6px 8px;
  border-radius: 14px;

  white-space: nowrap; /* Matn tushmasligi, yonma-yon turishi uchun. (Original kodingizda normal edi, lekin suriluvchi tabbar uchun nowrap mantiqiyroq) */
  word-break: break-word; /* Qoldirildi (zarur bo'lmasa olib tashlash mumkin) */

  background: rgba(255, 0, 176, 1); /* Original koddagi fon qoldirildi */
}

/* modal */
.modal-backdrop{ position:fixed; inset:0; display:flex; align-items:center; justify-content:center; background: rgba(0,0,0,0.5); z-index:1300; }
.modal{ background:var(--card); padding:18px; border-radius:12px; width:92%; max-width:720px; box-shadow:var(--shadow); max-height:88vh; overflow:auto; }

/* ================================================= */
/* RESPONSIVE */
/* ================================================= */
@media (max-width: 880px) {
  body {
    padding-top: 80px;
  }

  .topbar-inner {
    flex-direction: row;
    align-items: center;
    gap: 8px;
  }

  .brand-text .app-name {
    font-size: 15px;
  }

  .search-area {
    margin-top: 12px;
  }
}

/* ================================================= */
/* QO'SHIMCHA ELEMENTLAR (Original kodingizda topilgan va saqlangan) */
/* ================================================= */

/* HTML dagi header va footer stillari */
header {
  background: #1e3a8a;
  color: #FF0098;
  padding: 15px;
}

header h1 {
  margin: 0;
}

nav a {
  color: #FFFFFF;
  margin-right: 15px;
  text-decoration: none;
  font-weight: bold;
}

.container {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 16px;
  background: #0084FF;
}

footer {
  background: #111827;
  color: #F8F7F7;
  text-align: center;
  padding: 15px;
  margin-top: 40px;
}

footer a {
  color: #93c5fd;
  margin: 0 10px;
  text-decoration: none;
}

/* Button va Input stillari */
input, button {
  display: block;
  margin: 10px auto;
  padding: 10px;
}

.btn {
  display: inline-block;
  margin: 10px;
  padding: 10px 15px;
  background: #007bff;
  color: #01FC0F; /* Original koddagi yashil rang saqlandi */
  text-decoration: none;
}

/* Profile Card stillari */
.profile-card {
  max-width: 32px; /* Juda kichik qiymat, 32px faqat avatar kengligi bo'lishi mumkin */
  margin: 80px auto;
  padding: 20px;
  background: #FFFFFF;
  border-radius: 14px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .15);
}

.avatar-lg {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  margin-bottom: 10px;
}

.profile-card button {
  background: #e53935;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
}

/* Kategoriyalar va Kutubxona tugmalari */
.categories-btn-wrap, .kutubxona-btn-wrap, .dars-btn-wrap {
  width: 100%; /* Mobil uchun 100% ga o'zgartirildi */
  max-width: 400px; /* Kartalar bilan bir xil maksimal kenglik */
  margin: 20px auto 10px auto; /* Markazlashtirish uchun auto */
  padding: 0 16px;
}

.categories-btn, .kutubxona-btn, .dars-btn {
  display: block;
  text-align: center;
  padding: 14px;
  border-radius: 14px;
  background: linear-gradient(90deg, #4f8ef6, #82d1ff);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 10px 25px rgba(79, 142, 246, 0.25);
}

.categories-list {
  list-style: none;
  padding: 0;
  margin-top: 20px;
}

.categories-list li {
  background: #f1f5ff;
  margin-bottom: 10px;
  padding: 14px;
  border-radius: 12px;
  font-weight: 600;
}

/* Kutubxona sahifasi */
.page-title {
  text-align: center;
  margin: 20px 0;
}

.kutubxona-list, .dars-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  padding: 16px;
}

/* PDF/Darslik kartalari stillari */
.pdf-card, .pdff-card {
  background: #111;
  color: #fff;
  padding: 16px;
  border-radius: 16px;
}

.pdf-card h3, .pdff-card h3 {
  margin: 0 0 6px;
}

.pdf-card p, .pdff-card p {
  font-size: 14px;
  opacity: .8;
}

.pdf-card a, .pdff-card a {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 14px;
  background: #facc15;
  color: #000;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
}

.pdf-actions, .pdff-actions {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.view-btn, .vieww-btn {
  flex: 1;
  text-align: center;
  padding: 10px;
  background: #2563eb;
  color: #fff;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
}

.download-btn, .downloadd-btn {
  flex: 1;
  text-align: center;
  padding: 10px;
  background: #facc15;
  color: #000;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
}

/* Yakuniy qavs. Original kodingizda ortiqcha qavs bor edi, u olib tashlandi. */
/* } */