/**
 * Kule CMS - Language Switcher Components
 * Apple Glass Design UI
 * Version: 1.0.0
 * 
 * This file provides consistent styling for language components
 * across all themes. Do not modify unless updating globally.
 */

/* ============================================
   CSS Variables (Theme-agnostic)
   ============================================ */
:root {
    --kule-lang-primary: #6366f1;
    --kule-lang-primary-light: #818cf8;
    --kule-lang-primary-bg: rgba(99, 102, 241, 0.1);
    --kule-lang-text: #1f2937;
    --kule-lang-text-secondary: #6b7280;
    --kule-lang-border: rgba(0, 0, 0, 0.08);
    --kule-lang-bg: rgba(255, 255, 255, 0.85);
    --kule-lang-bg-solid: #ffffff;
    --kule-lang-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    --kule-lang-shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --kule-lang-blur: 20px;
    --kule-lang-radius: 16px;
    --kule-lang-radius-sm: 12px;
    --kule-lang-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --kule-lang-text: #f9fafb;
        --kule-lang-text-secondary: #9ca3af;
        --kule-lang-border: rgba(255, 255, 255, 0.1);
        --kule-lang-bg: rgba(31, 41, 55, 0.9);
        --kule-lang-bg-solid: #1f2937;
        --kule-lang-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    }
}

/* ============================================
   Header Dropdown
   ============================================ */
.kule-lang-dropdown {
    position: relative;
}

.kule-lang-trigger {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--kule-lang-bg);
    backdrop-filter: blur(var(--kule-lang-blur));
    -webkit-backdrop-filter: blur(var(--kule-lang-blur));
    border: 1px solid var(--kule-lang-border);
    border-radius: var(--kule-lang-radius-sm);
    cursor: pointer;
    transition: var(--kule-lang-transition);
    font-family: inherit;
    font-size: 14px;
    color: var(--kule-lang-text);
}

.kule-lang-trigger:hover {
    background: var(--kule-lang-bg-solid);
    border-color: var(--kule-lang-primary-light);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.kule-lang-flag {
    width: 20px;
    height: 15px;
    object-fit: cover;
    border-radius: 3px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.kule-lang-code {
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.5px;
}

.kule-lang-arrow {
    width: 16px;
    height: 16px;
    color: var(--kule-lang-text-secondary);
    transition: transform 0.2s ease;
}

.kule-lang-dropdown.open .kule-lang-arrow {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.kule-lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    max-height: 320px;
    background: var(--kule-lang-bg);
    backdrop-filter: blur(var(--kule-lang-blur));
    -webkit-backdrop-filter: blur(var(--kule-lang-blur));
    border: 1px solid var(--kule-lang-border);
    border-radius: var(--kule-lang-radius);
    box-shadow: var(--kule-lang-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.95);
    transition: var(--kule-lang-transition);
    z-index: 1000;
    overflow: hidden;
}

.kule-lang-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.kule-lang-menu-inner {
    max-height: 300px;
    overflow-y: auto;
    padding: 6px;
}

.kule-lang-menu-inner::-webkit-scrollbar {
    width: 6px;
}

.kule-lang-menu-inner::-webkit-scrollbar-track {
    background: transparent;
}

.kule-lang-menu-inner::-webkit-scrollbar-thumb {
    background: var(--kule-lang-border);
    border-radius: 3px;
}

.kule-lang-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--kule-lang-text);
    text-decoration: none;
    transition: var(--kule-lang-transition);
}

.kule-lang-item:hover {
    background: var(--kule-lang-primary-bg);
}

.kule-lang-item.active {
    background: var(--kule-lang-primary-bg);
    color: var(--kule-lang-primary);
}

.kule-lang-name {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
}

.kule-lang-check {
    width: 18px;
    height: 18px;
    color: var(--kule-lang-primary);
}

/* ============================================
   Mobile Language Button
   ============================================ */
.kule-lang-mobile-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 12px 16px;
    background: var(--kule-lang-bg);
    backdrop-filter: blur(var(--kule-lang-blur));
    -webkit-backdrop-filter: blur(var(--kule-lang-blur));
    border: 1px solid var(--kule-lang-border);
    border-radius: var(--kule-lang-radius-sm);
    cursor: pointer;
    transition: var(--kule-lang-transition);
    font-family: inherit;
    font-size: 15px;
    color: var(--kule-lang-text);
    text-align: left;
}

.kule-lang-mobile-btn:hover {
    background: var(--kule-lang-bg-solid);
    border-color: var(--kule-lang-primary-light);
}

/* ============================================
   Footer Language Button
   ============================================ */
.kule-lang-footer-btn {
    display: inline-flex;
    background: transparent;
    border: none;
    padding: 0;
    cursor: pointer;
    font-family: inherit;
}

.kule-lang-footer-btn-inner {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--kule-lang-bg);
    backdrop-filter: blur(var(--kule-lang-blur));
    -webkit-backdrop-filter: blur(var(--kule-lang-blur));
    border: 1px solid var(--kule-lang-border);
    border-radius: 50px;
    transition: var(--kule-lang-transition);
    color: var(--kule-lang-text);
}

.kule-lang-footer-btn:hover .kule-lang-footer-btn-inner {
    background: var(--kule-lang-bg-solid);
    border-color: var(--kule-lang-primary-light);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.2);
    transform: translateY(-2px);
}

.kule-lang-footer-icon {
    width: 18px;
    height: 18px;
    color: var(--kule-lang-text-secondary);
}

.kule-lang-footer-flag {
    width: 22px;
    height: 16px;
    object-fit: cover;
    border-radius: 3px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.kule-lang-footer-text {
    font-size: 14px;
    font-weight: 500;
}

.kule-lang-footer-arrow {
    width: 16px;
    height: 16px;
    color: var(--kule-lang-text-secondary);
}

/* ============================================
   Language Modal (Apple Glass Design)
   ============================================ */
.kule-lang-modal {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.kule-lang-modal.show {
    opacity: 1;
    visibility: visible;
}

.kule-lang-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.kule-lang-modal-container {
    position: relative;
    width: 100%;
    max-width: 480px;
    max-height: calc(100vh - 40px);
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.kule-lang-modal.show .kule-lang-modal-container {
    transform: scale(1) translateY(0);
}

.kule-lang-modal-content {
    background: var(--kule-lang-bg);
    backdrop-filter: blur(var(--kule-lang-blur));
    -webkit-backdrop-filter: blur(var(--kule-lang-blur));
    border: 1px solid var(--kule-lang-border);
    border-radius: var(--kule-lang-radius);
    box-shadow: var(--kule-lang-shadow-lg);
    overflow: hidden;
}

/* Modal Header */
.kule-lang-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--kule-lang-border);
}

.kule-lang-modal-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 600;
    color: var(--kule-lang-text);
}

.kule-lang-modal-icon {
    width: 24px;
    height: 24px;
    color: var(--kule-lang-primary);
}

.kule-lang-modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--kule-lang-primary-bg);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--kule-lang-transition);
    color: var(--kule-lang-text-secondary);
}

.kule-lang-modal-close:hover {
    background: var(--kule-lang-primary);
    color: white;
}

.kule-lang-modal-close svg {
    width: 18px;
    height: 18px;
}

/* Modal Search */
.kule-lang-modal-search {
    position: relative;
    padding: 16px 24px;
    border-bottom: 1px solid var(--kule-lang-border);
}

.kule-lang-search-icon {
    position: absolute;
    left: 40px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--kule-lang-text-secondary);
    pointer-events: none;
}

.kule-lang-search-input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    background: var(--kule-lang-bg-solid);
    border: 1px solid var(--kule-lang-border);
    border-radius: var(--kule-lang-radius-sm);
    font-family: inherit;
    font-size: 15px;
    color: var(--kule-lang-text);
    outline: none;
    transition: var(--kule-lang-transition);
}

.kule-lang-search-input::placeholder {
    color: var(--kule-lang-text-secondary);
}

.kule-lang-search-input:focus {
    border-color: var(--kule-lang-primary);
    box-shadow: 0 0 0 3px var(--kule-lang-primary-bg);
}

/* Modal List */
.kule-lang-modal-list {
    max-height: 400px;
    overflow-y: auto;
    padding: 12px;
}

.kule-lang-modal-list::-webkit-scrollbar {
    width: 8px;
}

.kule-lang-modal-list::-webkit-scrollbar-track {
    background: transparent;
}

.kule-lang-modal-list::-webkit-scrollbar-thumb {
    background: var(--kule-lang-border);
    border-radius: 4px;
}

.kule-lang-modal-list::-webkit-scrollbar-thumb:hover {
    background: var(--kule-lang-text-secondary);
}

/* Modal Item */
.kule-lang-modal-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: var(--kule-lang-radius-sm);
    color: var(--kule-lang-text);
    text-decoration: none;
    transition: var(--kule-lang-transition);
    margin-bottom: 4px;
}

.kule-lang-modal-item:last-child {
    margin-bottom: 0;
}

.kule-lang-modal-item:hover {
    background: var(--kule-lang-primary-bg);
}

.kule-lang-modal-item.active {
    background: var(--kule-lang-primary);
    color: white;
}

.kule-lang-modal-item.active .kule-lang-modal-item-name {
    color: rgba(255, 255, 255, 0.8);
}

.kule-lang-modal-item.hidden {
    display: none;
}

.kule-lang-modal-item-flag {
    width: 36px;
    height: 27px;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.kule-lang-modal-item-flag img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.kule-lang-modal-item-emoji {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: 20px;
    background: var(--kule-lang-border);
}

.kule-lang-modal-item-info {
    flex: 1;
    min-width: 0;
}

.kule-lang-modal-item-native {
    display: block;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.3;
}

.kule-lang-modal-item-name {
    display: block;
    font-size: 13px;
    color: var(--kule-lang-text-secondary);
    line-height: 1.3;
}

.kule-lang-modal-item-check {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.kule-lang-modal-item-check svg {
    width: 100%;
    height: 100%;
}

/* Empty State */
.kule-lang-modal-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    color: var(--kule-lang-text-secondary);
    text-align: center;
}

.kule-lang-modal-empty svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.kule-lang-modal-empty span {
    font-size: 15px;
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 640px) {
    .kule-lang-modal {
        padding: 0;
        align-items: flex-end;
    }
    
    .kule-lang-modal-container {
        max-width: 100%;
        max-height: 85vh;
        transform: translateY(100%);
    }
    
    .kule-lang-modal.show .kule-lang-modal-container {
        transform: translateY(0);
    }
    
    .kule-lang-modal-content {
        border-radius: var(--kule-lang-radius) var(--kule-lang-radius) 0 0;
    }
    
    .kule-lang-modal-list {
        max-height: calc(85vh - 180px);
    }
}

/* ============================================
   Animation Keyframes
   ============================================ */
@keyframes kule-lang-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.kule-lang-modal.show .kule-lang-modal-item {
    animation: kule-lang-fade-in 0.3s ease forwards;
}

.kule-lang-modal.show .kule-lang-modal-item:nth-child(1) { animation-delay: 0.02s; }
.kule-lang-modal.show .kule-lang-modal-item:nth-child(2) { animation-delay: 0.04s; }
.kule-lang-modal.show .kule-lang-modal-item:nth-child(3) { animation-delay: 0.06s; }
.kule-lang-modal.show .kule-lang-modal-item:nth-child(4) { animation-delay: 0.08s; }
.kule-lang-modal.show .kule-lang-modal-item:nth-child(5) { animation-delay: 0.1s; }
.kule-lang-modal.show .kule-lang-modal-item:nth-child(6) { animation-delay: 0.12s; }
.kule-lang-modal.show .kule-lang-modal-item:nth-child(7) { animation-delay: 0.14s; }
.kule-lang-modal.show .kule-lang-modal-item:nth-child(8) { animation-delay: 0.16s; }
.kule-lang-modal.show .kule-lang-modal-item:nth-child(9) { animation-delay: 0.18s; }
.kule-lang-modal.show .kule-lang-modal-item:nth-child(10) { animation-delay: 0.2s; }