/* Modern Pyebwa App Styles - Enhanced Design System */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Haitian Flag Colors - Core Brand */
    --primary-red: #D41125;
    --primary-blue: #00217D;
    --accent-yellow: #FFC72C;
    
    /* Extended Brand Palette */
    --red-dark: #B00E20;
    --red-light: #E94255;
    --blue-dark: #001551;
    --blue-light: #0B3FA6;
    --yellow-dark: #E6B400;
    --yellow-light: #FFD651;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --black: #000000;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Modern Shadows with Depth */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px -1px rgba(0, 0, 0, 0.06), 0 1px 2px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -2px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
    
    /* Colored Shadows */
    --shadow-blue: 0 4px 14px 0 rgba(0, 33, 125, 0.25);
    --shadow-red: 0 4px 14px 0 rgba(212, 17, 37, 0.25);
    --shadow-yellow: 0 4px 14px 0 rgba(255, 199, 44, 0.35);
    
    /* Layout */
    --header-height: 72px;
    --sidebar-width: 260px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index Scale */
    --z-base: 0;
    --z-dropdown: 50;
    --z-sticky: 100;
    --z-overlay: 200;
    --z-modal: 9999;
    --z-popover: 10000;
    --z-tooltip: 10001;
}

/* Dark Mode Variables */
body.dark-mode {
    --gray-50: #18181B;
    --gray-100: #27272A;
    --gray-200: #3F3F46;
    --gray-300: #52525B;
    --gray-400: #71717A;
    --gray-500: #A1A1AA;
    --gray-600: #D4D4D8;
    --gray-700: #E4E4E7;
    --gray-800: #F4F4F5;
    --gray-900: #FAFAFA;
    
    --shadow-sm: 0 2px 4px -1px rgba(0, 0, 0, 0.3), 0 1px 2px -1px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -2px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.5);
}

/* Base Typography */
body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-900);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(212, 17, 37, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 33, 125, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 199, 44, 0.02) 0%, transparent 50%);
    min-height: 100vh;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    margin: 0;
    color: var(--gray-900);
}

h1 { font-size: 2.5rem; line-height: 1.2; }
h2 { font-size: 2rem; line-height: 1.3; }
h3 { font-size: 1.5rem; line-height: 1.4; }
h4 { font-size: 1.25rem; line-height: 1.5; }
h5 { font-size: 1.125rem; line-height: 1.5; }
h6 { font-size: 1rem; line-height: 1.5; }

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

/* Modern App Header */
.app-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    height: var(--header-height);
    transition: all var(--transition-base);
}

.app-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        var(--primary-red) 0%, 
        var(--primary-blue) 50%, 
        var(--accent-yellow) 100%);
    opacity: 0.8;
}

body.dark-mode .app-header {
    background: #000 !important;
    background-color: #000 !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px -1px rgba(0, 0, 0, 0.3);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 48px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

/* Logo */
.app-logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-logo-img {
    height: 44px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    transition: transform var(--transition-base);
}

.app-logo-img:hover {
    transform: scale(1.05);
}

/* Modern Navigation */
.nav-menu {
    display: flex;
    gap: 8px;
}

.nav-item {
    background: none;
    border: none;
    padding: 10px 20px;
    color: var(--gray-600);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.nav-item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(0, 33, 125, 0.1) 0%, 
        rgba(212, 17, 37, 0.1) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.nav-item:hover {
    color: var(--primary-blue);
    transform: translateY(-2px);
}

.nav-item:hover::before {
    opacity: 1;
}

.nav-item.active {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--blue-dark) 100%);
    color: white;
    box-shadow: var(--shadow-blue);
}

.nav-item.active:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 20px 0 rgba(0, 33, 125, 0.35);
}

.nav-item .material-icons {
    font-size: 20px;
}

/* Modern Language Selector */
.language-selector {
    background: var(--gray-100);
    padding: 4px;
    border-radius: 24px;
    display: flex;
    gap: 2px;
}

.lang-btn {
    background: none;
    border: none;
    padding: 8px 16px;
    color: var(--gray-600);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    border-radius: 20px;
    position: relative;
}

.lang-btn:hover {
    color: var(--primary-blue);
}

.lang-btn.active {
    background: white;
    color: var(--primary-blue);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

body.dark-mode .lang-btn.active {
    background: var(--gray-700);
    color: var(--accent-yellow);
}

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

.user-menu-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--gray-100);
    border: none;
    border-radius: 24px;
    color: var(--gray-700);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-base);
}

.user-menu-btn:hover {
    background: var(--gray-200);
    transform: translateY(-1px);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.user-menu:hover .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-dropdown a {
    display: block;
    padding: 12px 20px;
    color: var(--gray-700);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.user-dropdown a:hover {
    background: var(--gray-50);
    color: var(--primary-blue);
    padding-left: 24px;
}

.user-dropdown hr {
    margin: 8px 0;
    border: none;
    border-top: 1px solid var(--gray-200);
}

/* Modern Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.02em;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    transform: translateY(0);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--blue-dark) 100%);
    color: white;
    box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--blue-dark) 0%, var(--primary-blue) 100%);
    box-shadow: 0 6px 20px 0 rgba(0, 33, 125, 0.35);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-blue);
}

.btn-secondary {
    background: white;
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-danger {
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--red-dark) 100%);
    color: white;
    box-shadow: var(--shadow-red);
}

.btn-danger:hover {
    background: linear-gradient(135deg, var(--red-dark) 0%, var(--primary-red) 100%);
    box-shadow: 0 6px 20px 0 rgba(212, 17, 37, 0.35);
    transform: translateY(-2px);
}

.btn-warning {
    background: linear-gradient(135deg, var(--accent-yellow) 0%, var(--yellow-dark) 100%);
    color: var(--gray-900);
    box-shadow: var(--shadow-yellow);
}

.btn-warning:hover {
    background: linear-gradient(135deg, var(--yellow-dark) 0%, var(--accent-yellow) 100%);
    box-shadow: 0 6px 20px 0 rgba(255, 199, 44, 0.45);
    transform: translateY(-2px);
}

/* Main Content Area */
.app-main {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 32px 24px;
}

/* View Container */
.view-container {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.view-header h2 {
    font-size: 32px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-red) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Modern Cards */
.card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, 
        var(--primary-red) 0%, 
        var(--primary-blue) 50%, 
        var(--accent-yellow) 100%);
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card:hover::before {
    transform: translateX(0);
}

body.dark-mode .card {
    background: var(--gray-100);
}

/* Modern Member Grid */
.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.member-card {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.member-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(135deg, 
        var(--primary-blue) 0%, 
        var(--primary-red) 100%);
    opacity: 0.9;
}

.member-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px) scale(1.02);
}

.member-card-content {
    padding: 24px;
    position: relative;
}

.member-photo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: -50px auto 16px;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    border: 4px solid white;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
    transition: all var(--transition-base);
}

.member-photo .material-icons {
    font-size: 48px;
    color: var(--gray-400);
}

.member-card:hover .member-photo {
    transform: scale(1.1);
}

.member-info {
    text-align: center;
}

.member-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.member-relationship {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 8px;
}

.member-dates {
    font-size: 13px;
    color: var(--gray-500);
}

/* Search Box */
.search-box {
    position: relative;
    width: 300px;
}

.search-box .material-icons {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 20px;
}

.search-box input {
    width: 100%;
    padding: 12px 16px 12px 48px;
    font-size: 14px;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    background: var(--gray-50);
    transition: all var(--transition-base);
}

.search-box input:hover {
    border-color: var(--gray-300);
    background: white;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-blue);
    background: white;
    box-shadow: 0 0 0 4px rgba(0, 33, 125, 0.1);
}

/* Modern Form Styles */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="file"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    background: var(--gray-50);
    transition: all var(--transition-base);
    font-family: inherit;
}

input:hover,
select:hover,
textarea:hover {
    border-color: var(--gray-300);
    background: white;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    background: white;
    box-shadow: 0 0 0 4px rgba(0, 33, 125, 0.1);
}

/* File Input */
input[type="file"] {
    padding: 8px 12px;
    background: white;
}

/* Form Row */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
}

/* Modern Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: 20px;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.modal.active {
    display: flex;
    opacity: 1;
    animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: white;
    border-radius: var(--border-radius-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    animation: slideUp var(--transition-base);
    display: flex;
    flex-direction: column;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 32px 32px 24px;
    background: linear-gradient(135deg, 
        rgba(0, 33, 125, 0.05) 0%, 
        rgba(212, 17, 37, 0.05) 100%);
}

.modal-header h3 {
    font-size: 24px;
    color: var(--gray-900);
}

.modal-close {
    background: var(--gray-100);
    border: none;
    font-size: 24px;
    color: var(--gray-600);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: var(--gray-200);
    color: var(--gray-900);
    transform: rotate(90deg);
}

.modal-form {
    padding: 0 32px 32px;
    overflow-y: auto;
    max-height: calc(90vh - 120px);
}

body.dark-mode .modal-content {
    background: var(--gray-100);
}

/* Modern Toast Notifications */
.toast-notification {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: white;
    color: var(--gray-900);
    padding: 16px 24px 16px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-tooltip);
    max-width: 400px;
    min-width: 300px;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: toastSlideIn var(--transition-base) forwards;
}

@keyframes toastSlideIn {
    to {
        transform: translateX(-50%) translateY(0);
    }
}

.toast-notification::before {
    content: '';
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: bold;
}

.toast-notification.success {
    border-left: 4px solid #4CAF50;
}

.toast-notification.success::before {
    content: '✓';
    background: #4CAF50;
    color: white;
}

.toast-notification.error {
    border-left: 4px solid #f44336;
}

.toast-notification.error::before {
    content: '✕';
    background: #f44336;
    color: white;
}

body.dark-mode .toast-notification {
    background: var(--gray-100);
    box-shadow: var(--shadow-2xl);
}

/* Modern Loading Animation */
.loading-spinner {
    text-align: center;
    padding: 80px 20px;
}

.spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto 24px;
    position: relative;
}

.spinner::before,
.spinner::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 3px solid transparent;
}

.spinner::before {
    border-top-color: var(--primary-red);
    animation: spin 1.5s linear infinite;
}

.spinner::after {
    border-bottom-color: var(--primary-blue);
    border-right-color: var(--accent-yellow);
    animation: spin 1.5s linear infinite reverse;
}

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

.loading-spinner p {
    font-size: 16px;
    color: var(--gray-600);
    font-weight: 500;
}

/* Modern Empty State */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    max-width: 400px;
    margin: 0 auto;
}

.empty-icon {
    font-size: 80px;
    margin-bottom: 24px;
    display: inline-block;
    animation: float 3s ease-in-out infinite;
    opacity: 0.8;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.empty-state h3 {
    color: var(--gray-800);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.empty-state p {
    color: var(--gray-600);
    font-size: 16px;
    margin-bottom: 32px;
    line-height: 1.6;
}

/* Back to Top Button */
#backToTop {
    position: fixed;
    bottom: 32px;
    right: 32px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--blue-dark) 100%);
    color: white;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    opacity: 0;
    visibility: hidden;
    z-index: var(--z-sticky);
    border: none;
}

#backToTop::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: linear-gradient(135deg, 
        var(--primary-blue) 0%, 
        var(--primary-red) 100%);
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition-base);
}

#backToTop.visible {
    opacity: 1;
    visibility: visible;
}

#backToTop:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: var(--shadow-xl);
}

#backToTop:hover::before {
    opacity: 0.3;
}

#backToTop:active {
    transform: translateY(-2px) scale(1.05);
}

#backToTop .material-icons {
    font-size: 28px;
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 96px;
    right: 32px;
    background: white;
    color: var(--gray-700);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    z-index: var(--z-sticky);
    border: 2px solid var(--gray-200);
    font-size: 24px;
}

.theme-toggle:hover {
    transform: rotate(20deg) scale(1.1);
    border-color: var(--gray-300);
    box-shadow: var(--shadow-lg);
}

body.dark-mode .theme-toggle {
    background: var(--gray-800);
    color: var(--accent-yellow);
    border-color: var(--gray-700);
}

/* Mobile Navigation */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--gray-700);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
}

.mobile-menu-btn:hover {
    background: var(--gray-100);
}

/* Footer */
.app-footer {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--blue-dark) 100%);
    color: white;
    padding: 24px 0;
    margin-top: auto;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.footer-container p {
    margin: 0;
    font-size: 14px;
    opacity: 0.9;
}

.footer-container a {
    color: var(--accent-yellow);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.footer-container a:hover {
    color: var(--yellow-light);
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }
    
    .header-left {
        gap: 16px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .user-menu-btn .user-email {
        display: none;
    }
    
    .search-box {
        width: 100%;
    }
    
    .view-header {
        flex-direction: column;
        gap: 16px;
        align-items: stretch;
    }
    
    .members-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 20px;
        max-height: calc(100vh - 40px);
    }
    
    #backToTop,
    .theme-toggle {
        width: 48px;
        height: 48px;
        right: 20px;
    }
    
    #backToTop {
        bottom: 20px;
    }
    
    .theme-toggle {
        top: 80px;
    }
}

/* Print Styles */
@media print {
    .app-header,
    .app-footer,
    .mobile-menu-btn,
    .theme-toggle,
    #backToTop,
    .btn,
    .user-menu {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Styles */
*:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: rgba(0, 33, 125, 0.2);
    color: var(--gray-900);
}

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

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* Custom Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.gap-4 { gap: 32px; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

.hidden { display: none; }
.visible { visibility: visible; }
.invisible { visibility: hidden; }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }

.rounded { border-radius: var(--border-radius); }
.rounded-sm { border-radius: var(--border-radius-sm); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-xl { border-radius: var(--border-radius-xl); }
.rounded-full { border-radius: 9999px; }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-2xl { box-shadow: var(--shadow-2xl); }
.shadow-none { box-shadow: none; }

.transition-all { transition: all var(--transition-base); }
.transition-fast { transition: all var(--transition-fast); }
.transition-slow { transition: all var(--transition-slow); }