/* Main Styles - PieFed Client */
/* Using Inter font for optimal readability */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Default spacing and sizing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.25);
    
    /* Layout */
    --navbar-height: 60px;
    --sidebar-width: 280px;
    --content-max-width: 800px;
    
    /* Z-index layers */
    --z-sidebar: 150;
    --z-sidebar-overlay: 140;
    --z-sticky: 200;
    --z-dropdown: 250;
    --z-modal: 300;
    --z-toast: 400;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Selection */
::selection {
    background-color: var(--accent-color);
    color: white;
}

/* Focus styles */
:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Links */
a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Buttons */
button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Inputs */
input, textarea, select {
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-primary);
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px var(--accent-transparent);
}

input::placeholder, textarea::placeholder {
    color: var(--text-tertiary);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 20px;
    padding-right: 36px;
}

/* Utility classes */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* App Layout */
#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background-color: var(--bg-navbar);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.navbar-left, .navbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.navbar-right {
    position: relative;
    z-index: 10;
}

.navbar-center {
    flex: 1;
    max-width: 500px;
    margin: 0 var(--spacing-md);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-text {
    display: inline;
    letter-spacing: -0.5px;
}

.logo-afs {
    color: var(--text-primary);
}

.logo-pie {
    color: var(--accent-color);
}

/* Menu Toggle Button - visible on mobile and tablet */
#menu-toggle {
    display: flex;
}

@media (min-width: 1024px) {
    #menu-toggle {
        display: none;
    }
}

/* Icon Button */
.icon-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    position: relative;
}

.icon-btn:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.icon-btn svg {
    width: 22px;
    height: 22px;
}

/* Badge */
.badge {
    position: absolute;
    top: 4px;
    right: 4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: 0.7rem;
    font-weight: 600;
    color: white;
    background-color: var(--danger-color);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Search */
.search-container {
    position: relative;
    width: 100%;
}

.search-container .search-icon {
    position: absolute;
    left: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-tertiary);
    pointer-events: none;
}

.search-container input {
    width: 100%;
    padding-left: 40px;
    background-color: var(--bg-search);
    border: 1px solid transparent;
}

.search-container input:focus {
    background-color: var(--bg-input);
    border-color: var(--accent-color);
}

.search-results {
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    left: 0;
    right: 0;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    z-index: var(--z-dropdown);
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.search-result-item:hover {
    background-color: var(--bg-hover);
}

.search-result-item .avatar {
    flex-shrink: 0;
}

.search-result-info {
    flex: 1;
    min-width: 0;
}

.search-result-name {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-result-meta {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

/* User Menu */
.user-menu-container {
    position: relative;
}

.dropdown-container {
    position: relative;
}

.dropdown-panel {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    max-width: calc(100vw - 20px);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    display: none;
    overflow: hidden;
    margin-top: var(--spacing-xs);
}

.dropdown-panel.visible {
    display: block;
}

.dropdown-panel button {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-align: left;
    transition: background-color var(--transition-fast);
}

.dropdown-panel button:hover {
    background-color: var(--bg-hover);
}

.dropdown-panel button svg {
    width: 18px;
    height: 18px;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.dropdown-panel button.active {
    background-color: var(--accent-transparent);
    color: var(--accent-color);
}

.dropdown-panel button.active svg {
    color: var(--accent-color);
}

.dropdown-panel button.danger {
    color: var(--danger-color);
}

.dropdown-panel button.danger svg {
    color: var(--danger-color);
}

.dropdown-panel hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-xs) 0;
}

.dropdown-panel .dropdown-header {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#sort-menu {
    max-height: 70vh;
    overflow-y: auto;
}

.user-btn {
    padding: var(--spacing-xs);
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast);
    position: relative;
    z-index: 1;
    cursor: pointer;
}

.user-btn:hover {
    background-color: var(--bg-hover);
}

/* Avatar */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background-color: var(--bg-tertiary);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar svg {
    width: 60%;
    height: 60%;
}

.avatar-sm {
    width: 32px;
    height: 32px;
}

.avatar-lg {
    width: 64px;
    height: 64px;
}

.avatar-xl {
    width: 96px;
    height: 96px;
}

/* Dropdown */
.dropdown {
    display: block;
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    right: 0;
    min-width: 200px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xs);
    z-index: var(--z-dropdown);
}

.dropdown.hidden {
    display: none;
}

.dropdown button {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-align: left;
    transition: background-color var(--transition-fast);
}

.dropdown button:hover {
    background-color: var(--bg-hover);
}

.dropdown button svg {
    width: 18px;
    height: 18px;
    color: var(--text-secondary);
}

.dropdown button.danger {
    color: var(--danger-color);
}

.dropdown button.danger svg {
    color: var(--danger-color);
}

.dropdown hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-xs) 0;
}

/* Dropdown Menu (for sort, etc) */
.dropdown-menu {
    display: block;
    position: fixed;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xs);
    z-index: var(--z-dropdown);
    min-width: 180px;
    max-height: 70vh;
    overflow-y: auto;
}

.dropdown-menu.hidden {
    display: none;
}

.dropdown-menu hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-xs) 0;
}

.dropdown-header {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dropdown-menu button {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-align: left;
    transition: background-color var(--transition-fast);
}

.dropdown-menu button:hover {
    background-color: var(--bg-hover);
}

.dropdown-menu button.active {
    background-color: var(--accent-transparent);
    color: var(--accent-color);
}

.dropdown-menu button svg {
    width: 18px;
    height: 18px;
    color: var(--text-secondary);
}

.dropdown-menu button.active svg {
    color: var(--accent-color);
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    z-index: var(--z-sidebar);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    visibility: hidden;
}

.sidebar.open {
    transform: translateX(0);
    visibility: visible;
}

/* Only show sidebar by default on large screens (desktop) */
@media (min-width: 1024px) {
    .sidebar {
        transform: translateX(0);
        visibility: visible;
    }
}

/* Mobile and tablet - force sidebar hidden */
@media (max-width: 1023px) {
    .sidebar {
        width: 85% !important;
        max-width: 320px !important;
        box-shadow: var(--shadow-xl);
        z-index: 999 !important;
        transform: translateX(-100%) !important;
        visibility: hidden !important;
    }
    
    .sidebar.open {
        transform: translateX(0) !important;
        visibility: visible !important;
    }
    
    /* Make sidebar content disappear instantly when closing */
    .sidebar .sidebar-content {
        opacity: 0;
        transition: opacity 0s;
    }
    
    .sidebar.open .sidebar-content {
        opacity: 1;
        transition: opacity 0.15s ease-in 0.1s;
    }
    
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 998;
    }
    
    .sidebar-overlay.visible {
        display: block;
    }
}

.sidebar-content {
    padding: var(--spacing-md);
}

.sidebar-section {
    margin-bottom: var(--spacing-lg);
}

.sidebar-create-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
}

.sidebar-create-btn svg {
    width: 18px;
    height: 18px;
}

.sidebar-section h3 {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
    padding: 0 var(--spacing-sm);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: background-color var(--transition-fast), color var(--transition-fast);
    text-decoration: none;
}

.nav-item:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
    text-decoration: none;
}

.nav-item.active {
    background-color: var(--accent-transparent);
    color: var(--accent-color);
}

.nav-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-empty {
    padding: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.community-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.community-item .avatar {
    width: 24px;
    height: 24px;
    font-size: 0.7rem;
}

.community-item span {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Instance Info */
.instance-info {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

#instance-info {
    padding: var(--spacing-sm);
}

.instance-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

/* Main Content */
.main-content {
    margin-top: var(--navbar-height);
    padding: var(--spacing-md);
    min-height: calc(100vh - var(--navbar-height));
}

@media (min-width: 1024px) {
    .main-content {
        margin-left: var(--sidebar-width);
        padding: var(--spacing-lg);
    }
}

.feed-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* Loading Spinner */
.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl);
    color: var(--text-tertiary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-hover);
}

.btn-outline {
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--bg-hover);
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

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

.btn-icon {
    padding: var(--spacing-sm);
}

/* FAB */
.fab {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background-color: var(--accent-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: var(--z-sticky);
    transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.fab:hover {
    background-color: var(--accent-hover);
    transform: scale(1.05);
}

.fab svg {
    width: 24px;
    height: 24px;
}

@media (min-width: 1024px) {
    .fab {
        bottom: var(--spacing-xl);
        right: var(--spacing-xl);
    }
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 450px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.2s ease;
}

.modal-large {
    max-width: 600px;
}

.modal-fullscreen {
    max-width: 900px;
    height: 90vh;
    display: flex;
    flex-direction: column;
}

/* Web Registration Modal */
.web-register-container {
    flex: 1;
    overflow: hidden;
    background: var(--bg-secondary);
}

.web-register-container iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: #fff;
}

.web-register-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    text-align: center;
    background: var(--bg-card);
}

.web-register-footer p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background-color: var(--bg-card);
    z-index: 1;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-close svg {
    width: 20px;
    height: 20px;
}

.modal-content form {
    padding: var(--spacing-lg);
}

.modal-footer-text {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.modal-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    margin-top: var(--spacing-md);
}

/* Form elements */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
}

.form-help {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

.form-error {
    background-color: var(--danger-transparent);
    color: var(--danger-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.checkbox-label input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Form Tabs */
.form-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.form-tabs .tab {
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.form-tabs .tab:hover {
    color: var(--text-primary);
}

.form-tabs .tab.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

/* Chips */
.chip {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: background-color var(--transition-fast);
}

.chip:hover {
    background-color: var(--bg-hover);
}

.instance-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.popular-instances {
    margin-top: var(--spacing-lg);
}

.popular-instances h4 {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    pointer-events: none;
    width: auto;
    max-width: 90%;
}

.toast {
    background-color: var(--bg-card);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    animation: toastSlideIn 0.3s ease;
    pointer-events: auto;
    text-align: center;
    white-space: nowrap;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

.toast.info {
    border-left: 4px solid var(--accent-color);
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Settings */
.settings-container {
    padding: var(--spacing-lg);
}

.settings-section {
    margin-bottom: var(--spacing-xl);
}

.settings-section h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.setting-item {
    margin-bottom: var(--spacing-md);
}

.setting-item label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.setting-item select {
    max-width: 300px;
}

.settings-empty {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

/* Theme Selector */
.theme-selector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.theme-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.theme-btn:hover {
    background-color: var(--bg-hover);
}

.theme-btn.active {
    background-color: var(--accent-transparent);
}

.theme-preview {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
}

.theme-btn.active .theme-preview {
    border-color: var(--accent-color);
}

.dark-preview {
    background: linear-gradient(135deg, #1a1a2e 50%, #2d2d44 50%);
}

.light-preview {
    background: linear-gradient(135deg, #ffffff 50%, #f5f5f5 50%);
}

.oled-preview {
    background: linear-gradient(135deg, #000000 50%, #111111 50%);
}

.reddit-preview {
    background: linear-gradient(135deg, #1a1a1b 50%, #ff4500 50%);
}

.voyager-preview {
    background: linear-gradient(135deg, #16161a 50%, #7f5af0 50%);
}

.theme-btn span {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Responsive */

/* Mobile-only elements */
.mobile-only {
    display: none;
}

@media (max-width: 767px) {
    .mobile-only {
        display: flex;
    }
    
    .desktop-only {
        display: none !important;
    }
}

/* Mobile search modal */
.mobile-search-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-card);
}

.mobile-search-results {
    padding: var(--spacing-sm);
    max-height: calc(100vh - 80px);
    overflow-y: auto;
}

.mobile-search-results .search-result-item {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

@media (max-width: 767px) {
    :root {
        --spacing-md: 12px;
        --spacing-lg: 16px;
        --navbar-height: 56px;
    }
    
    .navbar-center {
        display: none;
    }
    
    .navbar {
        padding: 0 var(--spacing-sm);
    }
    
    .icon-btn {
        width: 36px;
        height: 36px;
    }
    
    .icon-btn svg {
        width: 20px;
        height: 20px;
    }
    
    /* Mobile sidebar overlay */
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: var(--z-sidebar-overlay);
        opacity: 0;
        transition: opacity var(--transition-normal);
    }
    
    .sidebar-overlay.visible {
        display: block;
        opacity: 1;
    }
    
    /* Main content mobile */
    .main-content {
        padding: var(--spacing-sm);
    }
    
    .feed-container {
        max-width: 100%;
    }
    
    /* Modal fullscreen on mobile */
    .modal-content {
        width: 100%;
        max-width: 100%;
        max-height: 100vh;
        height: 100vh;
        border-radius: 0;
        margin: 0;
    }
    
    .modal-fullscreen {
        height: 100vh;
    }
    
    .modal-header {
        padding: var(--spacing-md);
        position: sticky;
        top: 0;
        background: var(--bg-card);
        z-index: 1;
    }
    
    .modal-header h2 {
        font-size: 1.1rem;
    }
    
    /* FAB positioning mobile */
    .fab {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        width: 52px;
        height: 52px;
    }
    
    .fab svg {
        width: 22px;
        height: 22px;
    }
    
    /* Toast positioning mobile - centered */
    #toast-container {
        bottom: calc(var(--spacing-md) + 60px);
        left: 50%;
        right: auto;
        transform: translateX(-50%);
        width: calc(100% - var(--spacing-lg) * 2);
        max-width: 400px;
    }
    
    .toast {
        width: 100%;
        max-width: none;
        justify-content: center;
        text-align: center;
    }
    
    /* Form elements mobile */
    input, select, textarea {
        font-size: 16px !important; /* Prevent zoom on iOS */
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .form-tabs {
        gap: var(--spacing-xs);
    }
    
    .form-tabs .tab {
        padding: var(--spacing-sm);
        font-size: 0.85rem;
    }
    
    /* Buttons mobile */
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        min-height: 44px;
    }
    
    .modal-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .modal-actions .btn {
        width: 100%;
    }
    
    /* Context menu mobile */
    .context-menu {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        top: auto;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        max-height: 70vh;
        overflow-y: auto;
        padding-bottom: env(safe-area-inset-bottom, var(--spacing-md));
    }
    
    .context-menu button {
        padding: var(--spacing-md);
        min-height: 48px;
    }
    
    /* Dropdown mobile */
    .dropdown {
        right: var(--spacing-sm);
        min-width: 200px;
    }
    
    /* Settings mobile */
    .settings-container {
        padding: var(--spacing-md);
    }
    
    .theme-selector {
        gap: var(--spacing-xs);
    }
    
    .theme-btn {
        flex: 1;
        min-width: 60px;
    }
    
    .theme-preview {
        width: 40px;
        height: 40px;
    }
    
    .theme-btn span {
        font-size: 0.7rem;
    }
    
    /* Checkbox toggle mobile */
    .checkbox-toggle {
        min-height: 44px;
    }
}

/* Small phones */
@media (max-width: 374px) {
    :root {
        --spacing-md: 10px;
        --spacing-lg: 14px;
    }
    
    .navbar {
        padding: 0 var(--spacing-xs);
    }
    
    .icon-btn {
        width: 32px;
        height: 32px;
    }
    
    .modal-header h2 {
        font-size: 1rem;
    }
}

/* Safe areas for notched phones */
@supports (padding: env(safe-area-inset-top)) {
    .navbar {
        padding-top: env(safe-area-inset-top);
        height: calc(var(--navbar-height) + env(safe-area-inset-top));
    }
    
    .sidebar {
        top: calc(var(--navbar-height) + env(safe-area-inset-top));
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .main-content {
        margin-top: calc(var(--navbar-height) + env(safe-area-inset-top));
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .modal-content {
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .fab {
        bottom: calc(var(--spacing-md) + env(safe-area-inset-bottom));
    }
}

/* Touch-friendly styles */
@media (hover: none) and (pointer: coarse) {
    /* Larger touch targets */
    .icon-btn {
        min-width: 44px;
        min-height: 44px;
    }
    
    .nav-item {
        min-height: 44px;
    }
    
    .btn {
        min-height: 44px;
    }
    
    /* Remove hover effects on touch devices */
    .icon-btn:hover {
        background-color: transparent;
    }
    
    .nav-item:hover {
        background-color: transparent;
    }
    
    /* Active states for touch */
    .icon-btn:active {
        background-color: var(--bg-hover);
    }
    
    .nav-item:active {
        background-color: var(--bg-hover);
    }
    
    .btn:active {
        transform: scale(0.98);
    }
}

/* Landscape phone */
@media (max-height: 500px) and (orientation: landscape) {
    .modal-content {
        height: 100vh;
        max-height: 100vh;
    }
    
    .sidebar {
        width: 260px;
    }
}

/* Print styles */
@media print {
    .navbar,
    .sidebar,
    .fab,
    .modal,
    #toast-container {
        display: none !important;
    }
    
    .main-content {
        margin: 0 !important;
        padding: 0 !important;
    }
}