/* Navbar Shared Styles */

/* Header */
.header {
    background: var(--bg-secondary);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    overflow: visible;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 30px;
    overflow: visible;
    flex-wrap: nowrap;
}

.nav-spacer {
    flex: 1;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
}

/* Personal Feed Button (desktop) */
.personal-feed-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 999px;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    font-weight: 700;
    font-size: 14px;
    text-decoration: none;
    box-shadow: 0 6px 18px rgba(59, 130, 246, 0.25);
    transition: transform 0.15s ease, box-shadow 0.2s ease, opacity 0.2s ease;
    white-space: nowrap;
}

.personal-feed-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 22px rgba(59, 130, 246, 0.35);
}

.personal-feed-btn:active {
    transform: translateY(0);
}

/* Hide on small screens */
@media (max-width: 992px) {
    .personal-feed-btn { display: none !important; }
}

.back-btn {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
    transition: background 0.3s, color 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.back-btn:hover {
    background: var(--border-color);
}

.back-btn::before {
    content: '←';
    font-size: 16px;
    transition: transform 0.3s ease;
}

[dir="rtl"] .back-btn::before {
    content: '→';
}

.back-btn:hover::before {
    transform: translateX(-2px);
}

[dir="rtl"] .back-btn:hover::before {
    transform: translateX(2px);
}

.search-bar {
    flex: 0 1 420px;
    max-width: 420px;
}

.search-bar input {
    width: 100%;
    padding: 12px 20px;
    border: 2px solid var(--border-color);
    border-radius: 25px;
    font-size: 16px;
    background: var(--input-bg);
    color: var(--text-primary);
    transition: border-color 0.3s, background-color 0.3s, color 0.3s;
}

/* Compact search */
.search-toggle {
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    flex: 0 0 40px; /* don't shrink on mobile */
    aspect-ratio: 1 / 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0;
}

.search-collapsible {
    width: 0;
    opacity: 0;
    overflow: hidden;
    transition: width 0.25s ease, opacity 0.2s ease, margin 0.2s ease;
    margin-inline-start: 0;
}

.search-collapsible.open {
    width: 320px;
    opacity: 1;
    margin-inline-start: 12px;
}

/* When search is open, hide other nav items and expand input */
.header-content.search-open .nav-menu,
.header-content.search-open .back-btn,
.header-content.search-open .search-toggle {
    display: none;
}

.header-content.search-open .search-collapsible {
    width: 100%;
    opacity: 1;
    margin-inline-start: 12px;
}

@media (max-width: 768px) {
    .search-collapsible.open {
        width: 100%;
    }
}

.search-bar input:focus {
    outline: none;
    border-color: #2563eb;
}

.nav-menu {
    display: flex;
    gap: 25px;
    align-items: center;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .header-content { gap: 18px; }
    .logo { font-size: 22px; }
    .nav-menu { display: none; }
    .nav-link { font-size: 14px; }
    .search-toggle { display: none !important; }
    .search-collapsible { display: none !important; }
    .user-dropdown { display: none !important; }
    .dark-mode-toggle { display: none !important; }
}

@media (max-width: 480px) {
    .header-content { gap: 14px; }
    .logo { font-size: 20px; }
    .nav-menu { display: none; }
    .nav-link { font-size: 13px; }
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.2s;
    cursor: pointer;
}

.nav-link:hover {
    color: #2563eb;
}

/* Language Selector */
.language-selector {
    position: relative;
}

.language-selector-btn {
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 24px;
    padding: 8px 14px;
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    min-width: 130px;
    position: relative;
}

.language-selector-btn:hover {
    background: var(--border-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.language-selector-btn:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.language-selector-btn:active {
    transform: translateY(0);
}

.language-flag {
    font-size: 18px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.language-name {
    flex: 1;
    text-align: start;
    white-space: nowrap;
}

.language-chevron {
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.language-selector-btn[aria-expanded="true"] .language-chevron {
    transform: rotate(180deg);
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    padding: 6px;
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
}

[dir="rtl"] .language-dropdown {
    right: auto;
    left: 0;
}

.language-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    width: 100%;
    border: none;
    background: transparent;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
    position: relative;
}

.language-option:hover {
    background: var(--bg-tertiary);
}

.language-option .language-flag {
    font-size: 20px;
}

.language-option .language-name {
    flex: 1;
    text-align: start;
}

.language-option .language-check {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    flex-shrink: 0;
    color: #2563eb;
}

.language-option.active {
    background: rgba(37, 99, 235, 0.08);
}

.language-option.active .language-check {
    opacity: 1;
    visibility: visible;
}

.language-option:not(.active) .language-check {
    opacity: 0 !important;
    visibility: hidden !important;
}

body.dark-mode .language-option:hover {
    background: rgba(255, 255, 255, 0.05);
}

body.dark-mode .language-option.active {
    background: rgba(37, 99, 235, 0.15);
}

@media (max-width: 768px) {
    .language-selector {
        display: none !important;
    }
}

/* Dark Mode Toggle Button */
.dark-mode-toggle {
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    flex: 0 0 40px;
    aspect-ratio: 1 / 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
    transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
}

.dark-mode-toggle .dark-mode-icon {
    font-size: 20px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dark-mode-toggle:hover {
    background: var(--border-color);
    transform: scale(1.05);
}

.dark-mode-toggle:active {
    transform: scale(0.95);
}

@media (max-width: 768px) {
    .dark-mode-toggle {
        width: 36px;
        height: 36px;
        flex: 0 0 36px;
    }
    
    .dark-mode-toggle .dark-mode-icon {
        font-size: 18px;
    }
}

/* User Actions Group - wraps dark mode toggle and user section */
.user-actions-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* User Section */
.user-section {
    display: flex;
    align-items: center;
    gap: 5px;
}

.loading-placeholder {
    width: 100px;
    height: 36px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.btn-login {
    padding: 10px 24px;
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    color: white;
    border: none;
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
    text-decoration: none;
    display: inline-block;
    font-size: 14px;
    white-space: nowrap;
    min-width: fit-content;
}

.btn-login:hover {
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .btn-login {
        padding: 8px 20px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .btn-login {
        padding: 8px 18px;
        font-size: 12px;
    }
}

/* User Dropdown */
.user-dropdown {
    position: relative;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
}

.user-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
    overflow: hidden;
}

.user-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    padding: 12px;
    min-width: 220px;
    display: none;
    z-index: 1001;
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

[dir="rtl"] .user-menu {
    right: auto;
    left: 0;
}

.user-menu.show {
    display: block;
}

.user-menu-item {
    padding: 14px 18px;
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.2s;
    font-size: 15px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    text-decoration: none;
}

.user-menu-item:hover {
    background: var(--bg-tertiary);
}

body.dark-mode .user-menu-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.user-menu-item.danger {
    color: #dc2626;
    margin-top: 4px;
    padding-top: 12px;
}

.user-menu-item.danger:hover {
    background: #fef2f2;
}

body.dark-mode .user-menu-item.danger:hover {
    background: rgba(220, 38, 38, 0.1);
}

/* Mobile Bottom Tab Bar */
.mobile-tab-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 8px 0 calc(8px + env(safe-area-inset-bottom));
}

.mobile-tab-bar-content {
    display: flex;
    justify-content: space-around;
    align-items: center;
    max-width: 600px;
    margin: 0 auto;
}

.mobile-tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px 16px;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    flex: 1;
    border-radius: 12px;
}

.mobile-tab-item:hover {
    background: var(--bg-primary);
}

.mobile-tab-item.active {
    color: #3b82f6;
}

.mobile-tab-icon {
    width: 24px;
    height: 24px;
    transition: transform 0.2s ease, stroke-width 0.2s ease;
    fill: none !important;
    stroke: currentColor;
    stroke-width: 2;
}

.mobile-tab-item.active .mobile-tab-icon {
    transform: scale(1.1);
    stroke-width: 2.5;
    fill: none !important;
}

.mobile-tab-label {
    font-size: 11px;
    font-weight: 600;
}

/* Show tab bar only on mobile */
@media (max-width: 768px) {
    .mobile-tab-bar {
        display: block !important;
    }
    
    /* Add padding to body to prevent content from being hidden behind tab bar */
    body {
        padding-bottom: calc(70px + env(safe-area-inset-bottom));
    }
}

/* Hide tab bar on desktop */
@media (min-width: 769px) {
    .mobile-tab-bar {
        display: none !important;
    }
}