/* ============================================
   Silent Auction Gallery - Main Stylesheet
   Production-grade CSS with WCAG 2.1 AA Compliance
   ============================================ */

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", 
                 "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
    line-height: 1.6;
    color: #212121;
    background-color: #ffffff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* ===== Color Scheme - WCAG 2.1 AA Compliant ===== */
:root {
    /* Primary Colors */
    --color-primary: #1976d2;
    --color-primary-dark: #1565c0;
    --color-primary-light: #42a5f5;
    
    /* Secondary Colors */
    --color-secondary: #388e3c;
    --color-secondary-dark: #2e7d32;
    --color-secondary-light: #66bb6a;
    
    /* Neutral Colors */
    --color-dark: #212121;
    --color-dark-gray: #424242;
    --color-gray: #757575;
    --color-light-gray: #bdbdbd;
    --color-lighter-gray: #e0e0e0;
    --color-lightest-gray: #f5f5f5;
    --color-white: #ffffff;
    
    /* Status Colors */
    --color-success: #2e7d32;
    --color-warning: #f57c00;
    --color-error: #c62828;
    --color-info: #0277bd;
    
    /* Semantic Colors */
    --color-active: #1976d2;
    --color-disabled: #9e9e9e;
    --color-focus: #1565c0;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.8;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;
    
    /* Box Shadow - WCAG Compliant Depth */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    
    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 50;
    --z-modal-backdrop: 1000;
    --z-modal: 1001;
    --z-tooltip: 1002;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

h5, h6 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-normal);
}

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

a:focus {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

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

/* Skip to Main Content Link - Accessibility */
.skip-to-main {
    position: absolute;
    top: -40px;
    left: 0;
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-md);
    z-index: var(--z-modal);
    text-decoration: none;
}

.skip-to-main:focus {
    top: 0;
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-admin {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== Layout - Main Content ===== */
.main-content {
    padding-top: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    flex: 1;
}

/* ===== Navigation Bar ===== */
.navbar {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-lighter-gray);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.navbar-brand {
    flex-shrink: 0;
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo:focus {
    outline: 2px solid var(--color-focus);
    outline-offset: 4px;
    border-radius: var(--radius-md);
}

.logo-img {
    height: 40px;
    width: auto;
    max-width: 150px;
    object-fit: contain;
}

.logo-text {
    letter-spacing: -0.02em;
}

.navbar-nav {
    flex: 1;
}

.nav-list {
    list-style: none;
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--color-gray);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: color var(--transition-normal);
    position: relative;
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link:focus {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

.nav-link.active {
    color: var(--color-primary);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.navbar-auth {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.user-menu-wrapper {
    position: relative;
}

.btn-profile {
    background-color: var(--color-lightest-gray);
    color: var(--color-dark);
    border: 1px solid var(--color-lighter-gray);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
}

.btn-profile:hover {
    background-color: var(--color-lighter-gray);
}

.btn-profile:focus {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--color-white);
    border: 1px solid var(--color-lighter-gray);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    margin-top: var(--spacing-sm);
    z-index: 1000;
}

.dropdown-item {
    display: block;
    width: 100%;
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-dark);
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-normal);
    font-size: var(--font-size-base);
}

.dropdown-item:hover {
    background-color: var(--color-lightest-gray);
}

.dropdown-item:focus {
    outline: 2px solid var(--color-focus);
    outline-offset: -2px;
}

.dropdown-item:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--color-dark);
    cursor: pointer;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

.menu-toggle:focus {
    outline: 2px solid var(--color-focus);
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: currentColor;
    margin: 6px 0;
    transition: var(--transition-normal);
}

/* Admin Navbar */
.navbar-admin {
    background-color: #f8f9fa;
    border-bottom: 2px solid var(--color-lighter-gray);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    white-space: nowrap;
    outline: none;
}

.btn:focus {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

/* Primary Button */
.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-primary:disabled {
    background-color: var(--color-disabled);
    cursor: not-allowed;
}

/* Secondary Button */
.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.btn-secondary:disabled {
    border-color: var(--color-disabled);
    color: var(--color-disabled);
    cursor: not-allowed;
}

/* Profile Button */
.btn-profile {
    background-color: var(--color-lightest-gray);
    color: var(--color-dark);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    position: relative;
}

.btn-profile:hover {
    background-color: var(--color-lighter-gray);
}

/* Danger Button */
.btn-danger {
    background-color: var(--color-error);
    color: white;
}

.btn-danger:hover {
    background-color: #b71c1c;
    box-shadow: var(--shadow-md);
}

/* Large Button */
.btn-large {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

/* Block Button */
.btn-block {
    display: flex;
    width: 100%;
}

/* Button Link Style */
.btn-link {
    background: none;
    border: none;
    color: var(--color-primary);
    text-decoration: underline;
    cursor: pointer;
    font-weight: 600;
    padding: 0;
}

.btn-link:hover {
    color: var(--color-primary-dark);
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-dark);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-lighter-gray);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
}

.form-control:disabled {
    background-color: var(--color-lightest-gray);
    color: var(--color-gray);
    cursor: not-allowed;
}

.form-control:invalid:not(:placeholder-shown) {
    border-color: var(--color-error);
}

.form-control:invalid:focus {
    box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* Form Checkbox */
.checkbox-control {
    width: auto;
    margin-right: var(--spacing-md);
    cursor: pointer;
}

.form-group.checkbox {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.form-group.checkbox label {
    margin-bottom: 0;
    margin-left: var(--spacing-md);
}

/* Error Message */
.error-message {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    display: block;
    margin-top: var(--spacing-sm);
}

/* Helper Text */
.helper-text {
    color: var(--color-gray);
    font-size: var(--font-size-sm);
    display: block;
    margin-top: var(--spacing-sm);
}

/* ===== Alerts ===== */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.alert-primary {
    background-color: #e3f2fd;
    color: #1565c0;
    border-left: 4px solid var(--color-primary);
}

.alert-success {
    background-color: #e8f5e9;
    color: #2e7d32;
    border-left: 4px solid var(--color-success);
}

.alert-warning {
    background-color: #fff3e0;
    color: #e65100;
    border-left: 4px solid var(--color-warning);
}

.alert-error {
    background-color: #ffebee;
    color: #c62828;
    border-left: 4px solid var(--color-error);
}

.alert-info {
    background-color: #e0f2f1;
    color: #00695c;
    border-left: 4px solid var(--color-info);
}

.alert p {
    margin-bottom: 0;
}

.alert-container {
    position: fixed;
    top: 100px;
    right: var(--spacing-lg);
    z-index: 999;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* ===== Cards & Sections ===== */
.card {
    background-color: white;
    border: 1px solid var(--color-lighter-gray);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-lighter-gray);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.card-body {
    margin-bottom: var(--spacing-lg);
}

.card-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-lighter-gray);
}

/* ===== Hero Section ===== */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-2xl);
}

.hero h1 {
    color: white;
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
}

.hero p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Page Header ===== */
.page-header {
    background-color: var(--color-lightest-gray);
    padding: var(--spacing-2xl) var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--radius-lg);
}

.page-header h1 {
    margin-bottom: var(--spacing-md);
}

.page-header-small {
    margin-bottom: var(--spacing-2xl);
}

.page-header-small h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
}

.page-header-small p {
    color: var(--color-gray);
    font-size: var(--font-size-lg);
}

/* ===== Grid & Layout ===== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Auctions Grid */
.auctions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    list-style: none;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-card {
    background-color: white;
    border: 1px solid var(--color-lighter-gray);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-card h3 {
    font-size: var(--font-size-base);
    color: var(--color-gray);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.stat-value {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    color: var(--color-gray);
    font-size: var(--font-size-sm);
}

/* ===== Auction Cards ===== */
.auction-card {
    background-color: white;
    border: 1px solid var(--color-lighter-gray);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}

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

.auction-card:focus {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

.auction-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    background-color: var(--color-lightest-gray);
}

.auction-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.auction-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.auction-artist {
    color: var(--color-gray);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.auction-details {
    flex: 1;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-lighter-gray);
    font-size: var(--font-size-sm);
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-label {
    color: var(--color-gray);
    font-weight: 500;
}

.detail-value {
    color: var(--color-dark);
    font-weight: 600;
}

.auction-timer {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--color-lightest-gray);
    border-radius: var(--radius-md);
    font-weight: 600;
    margin-top: var(--spacing-md);
}

.timer-value {
    color: var(--color-error);
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-lg);
}

.auction-status {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.status-active {
    background-color: #e8f5e9;
    color: var(--color-success);
}

.status-closed {
    background-color: #f5f5f5;
    color: var(--color-gray);
}

.status-ending {
    background-color: #fff3e0;
    color: var(--color-warning);
}

/* ===== Modals ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal-backdrop);
    padding: var(--spacing-lg);
}

.modal-content {
    background-color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--spacing-2xl);
    position: relative;
    width: 100%;
    max-width: 500px;
}

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

.modal-large {
    max-width: 800px;
}

.modal-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--color-gray);
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.modal-close:hover {
    background-color: var(--color-lightest-gray);
    color: var(--color-dark);
}

.modal-close:focus {
    outline: 2px solid var(--color-focus);
}

/* ===== Tables ===== */
table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
}

thead {
    background-color: var(--color-lightest-gray);
}

th {
    padding: var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    color: var(--color-dark);
    border-bottom: 2px solid var(--color-lighter-gray);
}

td {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-lighter-gray);
    color: var(--color-dark);
}

tbody tr:hover {
    background-color: var(--color-lightest-gray);
}

.admin-table {
    margin-top: var(--spacing-lg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--color-dark);
    color: white;
    padding: var(--spacing-2xl) var(--spacing-lg);
    margin-top: auto;
    text-align: center;
    font-size: var(--font-size-sm);
}

.footer a {
    color: var(--color-primary-light);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    font-size: var(--font-size-sm);
}

.breadcrumb a {
    color: var(--color-primary);
}

/* ===== Tabs ===== */
.tabs-list {
    display: flex;
    gap: var(--spacing-md);
    border-bottom: 2px solid var(--color-lighter-gray);
    margin-bottom: var(--spacing-2xl);
    list-style: none;
}

.tab-button {
    background: none;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-gray);
    cursor: pointer;
    transition: all var(--transition-normal);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}

.tab-button:hover {
    color: var(--color-primary);
}

.tab-button:focus {
    outline: 2px solid var(--color-focus);
    outline-offset: -2px;
}

.tab-button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-lighter-gray);
}

.page-info {
    min-width: 100px;
    text-align: center;
    font-weight: 600;
}

/* ===== Dropdown Menu ===== */
.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: white;
    border: 1px solid var(--color-lighter-gray);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    min-width: 200px;
    margin-top: var(--spacing-sm);
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    background: none;
    border: none;
    color: var(--color-dark);
    cursor: pointer;
    text-decoration: none;
    transition: background-color var(--transition-normal);
    font-size: var(--font-size-base);
}

.dropdown-item:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.dropdown-item:hover {
    background-color: var(--color-lightest-gray);
}

.dropdown-item.active {
    background-color: #e3f2fd;
    color: var(--color-primary);
    font-weight: 600;
}

/* ===== Utility Classes ===== */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-left {
    text-align: left;
}

.text-muted {
    color: var(--color-gray);
}

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

.text-success {
    color: var(--color-success);
}

.text-warning {
    color: var(--color-warning);
}

.text-danger {
    color: var(--color-error);
}

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.hidden {
    display: none !important;
}

.invisible {
    visibility: hidden;
}

/* ===== Loading & Animations ===== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-lighter-gray);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ===== Authentication Pages ===== */
.auth-page {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: var(--spacing-2xl) var(--spacing-md);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    max-width: 900px;
    width: 100%;
}

.auth-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2xl);
    animation: slideUp 400ms ease-out;
}

.auth-card.compact {
    max-width: 400px;
    margin: 0 auto;
}

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

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.auth-header h1 {
    font-size: var(--font-size-3xl);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.auth-header p {
    color: var(--color-gray);
    font-size: var(--font-size-lg);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.auth-form fieldset {
    border: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.auth-divider {
    text-align: center;
    position: relative;
    margin: var(--spacing-lg) 0;
    color: var(--color-gray);
    font-size: var(--font-size-sm);
}

.auth-divider:before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-lighter-gray);
    z-index: 0;
}

.auth-divider span {
    position: relative;
    background: white;
    padding: 0 var(--spacing-md);
    z-index: 1;
}

.auth-links,
.auth-footer {
    text-align: center;
    font-size: var(--font-size-sm);
}

.auth-info {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-xl);
}

.auth-info h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

.info-list {
    list-style: none;
    margin: var(--spacing-lg) 0;
}

.info-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--color-dark-gray);
}

.info-list li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: bold;
}

/* ===== Progress Indicator ===== */
.progress-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-2xl);
    gap: var(--spacing-md);
}

.progress-step {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-lighter-gray);
    color: var(--color-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    transition: all var(--transition-normal);
}

.progress-step.active {
    background: var(--color-primary);
    color: white;
}

.progress-line {
    flex: 1;
    max-width: 40px;
    height: 2px;
    background: var(--color-lighter-gray);
}

/* ===== Step Headers ===== */
.step-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.step-header h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.step-subtitle {
    color: var(--color-gray);
    font-size: var(--font-size-sm);
}

/* ===== Form Elements ===== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-weight: 500;
    color: var(--color-dark);
    font-size: var(--font-size-base);
}

.form-group.checkbox label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 400;
    cursor: pointer;
}

.checkbox-control {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.currency-symbol {
    position: absolute;
    left: var(--spacing-md);
    font-weight: 600;
    color: var(--color-gray);
}

.input-wrapper input {
    padding-left: var(--spacing-lg);
}

/* ===== Verification Input ===== */
.verification-input {
    text-align: center;
    font-size: var(--font-size-2xl);
    letter-spacing: var(--spacing-md);
    font-weight: 600;
    font-family: 'Courier New', monospace;
}

/* ===== Password Requirements ===== */
.password-requirements {
    background: var(--color-lightest-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.password-requirements h4 {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.password-requirements ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.password-requirements li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray);
    font-size: var(--font-size-sm);
}

.req-check {
    display: inline-block;
    width: 20px;
    height: 20px;
    text-align: center;
    color: var(--color-gray);
    font-weight: bold;
}

.password-requirements li.met .req-check {
    content: '✓';
    color: var(--color-success);
}

/* ===== Help Text & Error Messages ===== */
.help-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
}

.error-message {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* ===== QR Code Section ===== */
.qr-code-section {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-lightest-gray);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.qr-code-container {
    margin-bottom: var(--spacing-lg);
}

.qr-code {
    max-width: 250px;
    height: auto;
    border: 2px solid var(--color-lighter-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    background: white;
}

.qr-help {
    color: var(--color-gray);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
}

.manual-entry {
    margin-top: var(--spacing-lg);
    text-align: left;
}

.manual-entry details {
    cursor: pointer;
}

.manual-entry summary {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--spacing-sm);
}

.secret-code {
    background: white;
    border: 1px solid var(--color-lighter-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    padding: var(--spacing-sm);
    font-size: var(--font-size-base);
    transition: color var(--transition-fast);
}

.btn-icon:hover {
    color: var(--color-primary-dark);
}

/* ===== Backup Codes ===== */
.backup-codes-section {
    background: var(--color-lightest-gray);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.backup-codes-section h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.backup-help {
    color: var(--color-gray);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.backup-codes-list {
    background: white;
    border: 1px solid var(--color-lighter-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
    max-height: 200px;
    overflow-y: auto;
}

.backup-code-item {
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: var(--color-lightest-gray);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    letter-spacing: 1px;
}

.backup-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* ===== Dashboard Tabs ===== */
.dashboard-tabs,
.admin-tabs {
    border-bottom: 2px solid var(--color-lighter-gray);
    margin-bottom: var(--spacing-2xl);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tabs-list {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    padding: var(--spacing-md) 0;
}

.tab-button {
    background: none;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-gray);
    font-weight: 500;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
    font-size: var(--font-size-base);
    position: relative;
}

.tab-button:hover {
    color: var(--color-dark);
}

.tab-button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-icon {
    margin-right: var(--spacing-sm);
}

.tab-badge {
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    padding: 2px 6px;
    margin-left: var(--spacing-sm);
    font-weight: 600;
}

/* ===== Form Actions ===== */
.form-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.form-actions .btn {
    flex: 1;
}

/* ===== Success Message ===== */
.success-message {
    text-align: center;
    padding: var(--spacing-2xl);
}

.success-icon {
    font-size: 60px;
    color: var(--color-success);
    margin-bottom: var(--spacing-lg);
    animation: scaleIn 400ms ease-out;
}

@keyframes scaleIn {
    from {
        transform: scale(0);
    }
    to {
        transform: scale(1);
    }
}

.success-message h2 {
    font-size: var(--font-size-2xl);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.success-message p {
    color: var(--color-gray);
    margin-bottom: var(--spacing-lg);
}

.success-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-gray);
}

.empty-state p {
    margin-bottom: var(--spacing-lg);
}

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

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

.text-muted {
    color: var(--color-gray);
}

.text-error {
    color: var(--color-error);
}

.text-success {
    color: var(--color-success);
}

/* ===== Print Styles ===== */
@media print {
    .navbar,
    .footer,
    .pagination,
    .btn,
    .alert-container,
    .auth-page {
        display: none;
    }
    
    body {
        line-height: 1.5;
        color: #000;
    }
    
    a {
        text-decoration: underline;
    }
}