/* Umumiy uslublar va reset */
body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--color-light-bg);
    color: var(--color-dark-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.6;
    overflow-x: hidden;
    padding-top: var(--header-height); /* Header uchun joy ajratish */
}

/* Menyuni ochganda orqa fonni qimirlatmaslik uchun */
body.nav-open {
    overflow: hidden;
}

/* Menyuni ochganda asosiy kontentni xira qiluvchi uslub */
body.nav-open > main, body.nav-open > footer {
    filter: blur(5px);
    transform: scale(0.98); /* Kichik masshtab effekti */
    transition: filter 0.4s ease, transform 0.4s ease;
}

/* Preloader (Yuklanish effekti) */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity 0.75s ease, visibility 0.75s ease;
}
#preloader img {
    width: 80px;
    animation: pulse 1.5s infinite ease-in-out;
}
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.7; }
}
#preloader.preloader-hidden {
    opacity: 0;
    visibility: hidden;
}

/* ========================================= */
/* =========== HEADER (SHAPKA) ============= */
/* ========================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(229, 231, 235, 0.5);
    padding: 0 1.5rem;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: top 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}
.header-logo img {
    height: 4rem; /* O'zgarmas o'lcham */
    display: block;
}

/* ================================================= */
/* === MOBIL MENYU UCHUN YANGI KREATIV USLUBLAR === */
/* ================================================= */

/* Animatsiya uchun Keyframes */
@keyframes navLinkFadeIn {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* O'ngdan chiqadigan "suzib yuruvchi" menyu paneli */
.header-nav {
    position: fixed;
    top: 1rem; /* Tepadagi bo'sh joy */
    right: -100%; /* Boshida ekran tashqarisida */
    width: 320px; /* Panel kengligi */
    max-width: calc(100% - 2rem);
    height: auto;
    max-height: calc(100vh - 2rem); /* Ekrandan chiqib ketmasligi uchun */
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    border-radius: 1.25rem; /* Dumaloq qirralar */
    border: 1px solid rgba(255, 255, 255, 0.5);
    z-index: 1002;
    display: flex;
    flex-direction: column;
    transition: right 0.5s cubic-bezier(0.22, 1, 0.36, 1); /* Silliq ochilish effekti */
    overflow: hidden;
}
.header-nav.active {
    right: 1rem; /* JS orqali 'active' class qo'shilganda ko'rinadi */
}

/* Mobil menyu sarlavhasi */
.mobile-nav-header {
    display: flex;
    align-items: center;
    padding: 1.25rem 1.5rem;
    flex-shrink: 0;
}
.mobile-nav-logo {
    height: 2.25rem;
    margin-right: 0.75rem;
}
.mobile-nav-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-dark-text);
    margin: 0;
}

/* Asosiy menyu havolalari */
.header-nav > ul {
    display: flex; 
    flex-direction: column; /* Mobil uchun vertikal joylashuv */
    list-style: none;
    padding: 0 1rem 1rem 1rem;
    margin: 0;
    flex-grow: 1;
    overflow-y: auto;
}
.header-nav > ul li {
    opacity: 0; /* Animatsiya uchun boshlang'ich holat */
}
/* Animatsiyani aktiv holatda qo'llash */
.header-nav.active > ul li {
    animation: navLinkFadeIn 0.5s ease forwards;
}

/* Animatsiya kechikishini har bir bandga alohida berish */
.header-nav.active > ul li:nth-child(1) { animation-delay: 0.1s; }
.header-nav.active > ul li:nth-child(2) { animation-delay: 0.15s; }
.header-nav.active > ul li:nth-child(3) { animation-delay: 0.2s; }
.header-nav.active > ul li:nth-child(4) { animation-delay: 0.25s; }
.header-nav.active > ul li:nth-child(5) { animation-delay: 0.3s; }
.header-nav.active > ul li:nth-child(6) { animation-delay: 0.35s; }
.header-nav.active > ul li:nth-child(7) { animation-delay: 0.4s; }


.header-nav > ul a {
    text-decoration: none;
    color: #334155; /* Matn rangi */
    font-size: 1rem;
    font-weight: 600;
    padding: 0.8rem 1rem;
    display: block;
    border-radius: 0.6rem;
    transition: color 0.2s ease, background-color 0.2s ease;
}
.header-nav > ul a:hover, .header-nav > ul a.active {
    color: var(--color-primary-blue);
    background-color: rgba(0, 123, 255, 0.1);
}

/* Mobil menyu pastki qismi (tugmalar) */
.mobile-nav-footer {
    padding: 1.25rem;
    background-color: rgba(248, 249, 250, 0.8);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* ================================================= */
/* === YANGI: TIL TANLASH DROPDOWN USLUBLARI === */
/* ================================================= */

.language-selector-wrapper {
    position: relative;
    width: 100%;
}

.language-selector-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 0.6rem;
    padding: 0.75rem 1rem;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark-text);
    cursor: pointer;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
    text-align: left;
}
.language-selector-btn:hover {
    background-color: #f8f9fa;
}
.language-selector-btn.active {
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2);
    border-color: var(--color-primary-blue);
}
.lang-text-group {
    display: flex;
    align-items: center;
    gap: 0.75rem; /* Bayroq va matn orasi */
}

.lang-flag {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.language-selector-btn .chevron-down {
    transition: transform 0.3s ease;
}
.language-selector-btn.active .chevron-down {
    transform: rotate(180deg);
}

.language-dropdown {
    position: absolute;
    bottom: 100%; /* Tugmaning tepasida paydo bo'ladi */
    left: 0;
    width: 100%;
    background-color: #ffffff;
    border-radius: 0.6rem;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    border: 1px solid var(--color-border);
    list-style: none;
    padding: 0.5rem;
    margin: 0 0 0.5rem 0;
    z-index: 10;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}
.language-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.language-dropdown li a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1rem;
    color: var(--color-dark-text);
    text-decoration: none;
    font-weight: 500;
    border-radius: 0.4rem;
    transition: background-color 0.2s ease, color 0.2s ease;
    margin-bottom: 5px;
}
.language-dropdown li a:hover, .language-dropdown li a.selected {
    background-color: var(--color-light-blue);
    color: var(--color-primary-blue);
}


/* Kirish va ro'yxatdan o'tish tugmalari */
.auth-buttons {
    display: flex;
    gap: 0.75rem;
}
.login-btn, .signup-btn {
    width: 100%;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    padding: 0.8rem;
    border-radius: 0.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
}
.login-btn { 
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    color: var(--color-dark-text);
}
.login-btn:hover {
    background-color: #f1f5f9;
}
.signup-btn {
    background-color: var(--color-primary-blue);
    color: #fff;
    border: 1px solid var(--color-primary-blue);
}
.signup-btn:hover {
    background-color: #0056b3;
    border-color: #0056b3;
    transform: scale(1.03);
}

/* Gamburger Menyusi va Yopish belgisi */
.hamburger-menu {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1003;
    color: var(--color-dark-text);
    position: relative;
    width: 24px;
    height: 24px;
}
.hamburger-menu svg {
    position: absolute;
    top: 0;
    left: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
}
.hamburger-menu .hamburger-icon {
    opacity: 1;
    transform: rotate(0deg);
}
.hamburger-menu .close-icon {
    opacity: 0;
    transform: rotate(-90deg);
}
.hamburger-menu.active .hamburger-icon {
    opacity: 0;
    transform: rotate(90deg);
}
.hamburger-menu.active .close-icon {
    opacity: 1;
    transform: rotate(0deg);
}

/* O'ng tarafdagi harakatlar uchun konteyner */
.header-right-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Mobil uchun til va kirish tugmalarini yashiramiz (ular endi menyu ichida) */
.mobile-lang-selector, .mobile-login-btn {
    display: none;
}


/* Desktop uchun harakatlar (mobilda yashirin) */
.header-actions {
    display: none;
}

/* ========================================= */
/* ====== DESKTOP UCHUN MEDIA SO'ROVLARI === */
/* ========================================= */

@media (min-width: 992px) {
    body {
        padding-top: var(--header-height);
    }
    .header {
        padding: 10px 2.5rem;
        transition: height 0.3s ease-in-out, background-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    }
    
    .header.scrolled {
        height: var(--header-height-scrolled);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
        background-color: rgba(255, 255, 255, 0.95);
    }
    
    .header-logo img {
        height: 4rem;
        transition: height 0.3s ease-in-out;
    }

    .header.scrolled .header-logo img {
        height: 3.5rem;
    }
    

    .hamburger-menu, .mobile-login-btn, .mobile-nav-header, .mobile-nav-footer, .mobile-lang-selector {
        display: none;
    }
    .header-nav {
        position: static;
        top: auto;
        right: auto;
        width: auto;
        height: auto;
        max-height: none;
        background-color: transparent;
        backdrop-filter: none;
        box-shadow: none;
        border-radius: 0;
        border: none;
        padding: 0;
        flex-direction: row;
        /* margin: 0 auto; <-- O'chirildi, chunki ota elementda justify-content: space-between ishlatilgan */
    }
    .header-nav > ul {
        flex-direction: row;
        gap: 2.5rem;
        padding: 0;
        overflow-y: visible;
        flex-grow: 0; /* O'sishni bekor qilish */
    }

    /* ===== MUHIM O'ZGARTIRISH: Desktopda menyu bandlarini ko'rinadigan qilish ===== */
    .header-nav > ul li {
        opacity: 1; /* Mobil animatsiya uchun qo'yilgan 'opacity: 0' ni bekor qiladi */
        animation: none; /* Mobil animatsiyani o'chiradi */
    }
    /* ===== O'ZGARTIRISH TUGADI ===== */
    
    .header-nav > ul a {
        font-size: 0.95rem;
        position: relative;
        padding: 0.5rem 0;
        border-radius: 0;
    }
    .header-nav > ul a:hover, .header-nav > ul a.active {
        background-color: transparent;
    }
    .header-nav > ul a::after {
        content: '';
        position: absolute;
        bottom: -5px;
        left: 0;
        width: 0;
        height: 2px;
        background-color: var(--color-primary-blue);
        transition: width 0.3s ease;
    }
    .header-nav > ul a:hover::after, .header-nav > ul a.active::after {
        width: 100%;
    }
    /* Desktop uchun tugmalar va tilni ko'rsatish */
    .header-actions {
        display: flex;
        align-items: center;
        gap: 1rem;
    }
    .header-actions .auth-buttons {
        flex-direction: row;
        gap: 0.75rem;
    }
    
    /* Desktop uchun til tanlash menyusi */
    .header-actions .language-selector-wrapper {
        width: auto;
    }
    .header-actions .language-selector-btn {
        background-color: transparent;
        border: none;
        padding: 0.5rem;
    }
    .header-actions .language-selector-btn:hover {
        background-color: #f1f5f9;
    }
    .header-actions .language-dropdown {
        bottom: auto;
        top: 100%; /* Endi tugmaning pastida ochiladi */
        right: 0;
        left: auto;
        width: 160px; /* Kenglikni belgilash */
        margin: 0.5rem 0 0 0;
    }

    .header-actions .login-btn, .header-actions .signup-btn {
        font-size: 0.9rem;
        padding: 0.6rem 1rem;
    }
}