/* ClearBill Portal - Dark Theme Styles */

:root {
    --bg-primary: #0a0a0a;
    --bg-card: #1a1a1a;
    --bg-card-hover: #252525;
    --bg-input: #2a2a2a;
    --bg-input-hover: #333333;
    --bg-sidebar: #111111;
    --bg-sidebar-active: #1a1a1a;
    
    --accent-primary: #d4ff00;
    --accent-primary-hover: #e5ff33;
    --accent-secondary: #00d4ff;
    --accent-success: #00ff88;
    --accent-warning: #ffaa00;
    --accent-danger: #ff4444;
    
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #666666;
    --text-placeholder: #888888;
    
    --border-color: #333333;
    --border-color-light: #444444;
    
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(212, 255, 0, 0.3);
    --shadow-green-glow: 0 0 30px rgba(0, 255, 136, 0.4);
    
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

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

html,
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

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

a:hover {
    color: var(--accent-primary-hover);
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 24px 32px;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 260px;
    height: 100vh;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 700;
}

.sidebar-logo i {
    color: var(--accent-primary);
    font-size: 1.5rem;
    filter: drop-shadow(0 0 8px rgba(212, 255, 0, 0.5));
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 4px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.sidebar-nav a:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.sidebar-nav a.active {
    background: var(--bg-card);
    color: var(--accent-primary);
}

.sidebar-nav a i {
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

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

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-success));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--bg-primary);
}

.user-info {
    flex: 1;
}

.user-name {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.user-role {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

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

.header-left h1 {
    font-size: 1.75rem;
    margin-bottom: 4px;
}

.header-left p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.card-body {
    padding: 24px;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
}

.card-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 24px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-light);
}

.stat-info h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.stat-change {
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-change.positive {
    color: var(--accent-success);
}

.stat-change.negative {
    color: var(--accent-danger);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(212, 255, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon i {
    font-size: 1.25rem;
    color: var(--accent-primary);
}

/* Tables */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 16px;
    text-align: left;
    font-size: 0.9rem;
}

.table th {
    background: var(--bg-sidebar);
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.table td {
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.table tr:hover td {
    background: var(--bg-card-hover);
}

.table .status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.table .status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.status-success {
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent-success);
}

.status-success::before {
    background: var(--accent-success);
}

.status-pending {
    background: rgba(255, 170, 0, 0.1);
    color: var(--accent-warning);
}

.status-pending::before {
    background: var(--accent-warning);
}

.status-error {
    background: rgba(255, 68, 68, 0.1);
    color: var(--accent-danger);
}

.status-error::before {
    background: var(--accent-danger);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
}

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

.btn-primary:hover {
    background: var(--accent-primary-hover);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-outline:hover {
    background: var(--bg-card);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

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

.btn-danger:hover {
    background: #ff6666;
}

.btn-icon {
    padding: 10px;
    width: 40px;
    height: 40px;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
}

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-label span {
    color: var(--accent-danger);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(212, 255, 0, 0.1);
}

.form-input::placeholder {
    color: var(--text-placeholder);
}

.form-input-icon {
    position: relative;
}

.form-input-icon .form-input {
    padding-left: 44px;
}

.form-input-icon i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.form-select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.form-checkbox input {
    display: none;
}

.checkbox-indicator {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.form-checkbox:hover .checkbox-indicator {
    border-color: var(--accent-primary);
}

.form-checkbox input:checked + .checkbox-indicator {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.form-checkbox input:checked + .checkbox-indicator i {
    display: block;
}

.checkbox-indicator i {
    display: none;
    color: var(--bg-primary);
    font-size: 0.75rem;
}

.form-checkbox-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: radial-gradient(ellipse at top, #1a1a1a 0%, var(--bg-primary) 50%);
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-logo {
    text-align: center;
    margin-bottom: 40px;
}

.login-logo i {
    font-size: 3.5rem;
    color: var(--accent-primary);
    filter: drop-shadow(0 0 20px rgba(212, 255, 0, 0.5));
    margin-bottom: 16px;
}

.login-logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-logo p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.login-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.login-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.login-tab {
    flex: 1;
    padding: 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

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

.login-tab.active {
    color: var(--accent-primary);
}

.login-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 24px;
    right: 24px;
    height: 2px;
    background: var(--accent-primary);
}

.login-form {
    padding: 32px;
}

.login-form.hidden {
    display: none;
}

.login-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.btn-login {
    width: 100%;
    margin-bottom: 24px;
}

.login-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.social-login {
    display: flex;
    gap: 12px;
}

.social-login .btn {
    flex: 1;
    background: var(--bg-card-hover);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.social-login .btn:hover {
    background: var(--bg-input);
    border-color: var(--border-color-light);
}

/* Eligibility Page */
.eligibility-form {
    display: grid;
    gap: 24px;
}

.eligibility-form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.eligibility-results {
    margin-top: 32px;
}

.result-card {
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.result-card.success {
    background: rgba(0, 255, 136, 0.05);
    border-color: rgba(0, 255, 136, 0.3);
}

.result-card.error {
    background: rgba(255, 68, 68, 0.05);
    border-color: rgba(255, 68, 68, 0.3);
}

.result-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.result-header i {
    font-size: 1.5rem;
}

.result-card.success .result-header i {
    color: var(--accent-success);
}

.result-card.error .result-header i {
    color: var(--accent-danger);
}

.result-header h3 {
    margin: 0;
}

/* Payers Page */
.search-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.search-bar .form-input-icon {
    flex: 1;
}

.payers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.payer-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: all var(--transition-normal);
}

.payer-card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.payer-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.payer-logo {
    width: 48px;
    height: 48px;
    background: var(--bg-sidebar);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.payer-info h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.payer-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.payer-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.payer-detail {
    font-size: 0.85rem;
}

.payer-detail-label {
    color: var(--text-muted);
    margin-bottom: 4px;
}

.payer-detail-value {
    color: var(--text-primary);
    font-weight: 500;
}

/* Batch Upload */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px;
    text-align: center;
    background: var(--bg-card);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent-primary);
    background: rgba(212, 255, 0, 0.05);
}

.upload-zone i {
    font-size: 3rem;
    color: var(--accent-primary);
    margin-bottom: 16px;
}

.upload-zone h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.upload-zone p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.file-input {
    display: none;
}

.uploaded-files {
    margin-top: 24px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
}

.file-icon {
    width: 48px;
    height: 48px;
    background: rgba(212, 255, 0, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-icon i {
    color: var(--accent-primary);
    font-size: 1.25rem;
}

.file-info {
    flex: 1;
}

.file-name {
    font-weight: 500;
    margin-bottom: 4px;
}

.file-size {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.file-progress {
    width: 120px;
}

.progress-bar {
    height: 6px;
    background: var(--bg-input);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-primary);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.file-status {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success {
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    color: var(--accent-success);
}

.alert-error {
    background: rgba(255, 68, 68, 0.1);
    border: 1px solid rgba(255, 68, 68, 0.3);
    color: var(--accent-danger);
}

.alert-warning {
    background: rgba(255, 170, 0, 0.1);
    border: 1px solid rgba(255, 170, 0, 0.3);
    color: var(--accent-warning);
}

.alert-info {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--accent-secondary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 24px;
}

.empty-state i {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.pagination-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-light);
}

.pagination-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Responsive */
@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .table th,
    .table td {
        padding: 12px;
    }
    
    .login-form {
        padding: 24px;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease forwards;
}

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

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 10, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

.loading-overlay.hidden {
    display: none;
}

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

.loading-content .spinner {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
}

.loading-content p {
    color: var(--text-secondary);
}