/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #475569;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3 { font-weight: 600; margin-bottom: 1rem; }
h1 { font-size: 1.875rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

code {
    font-family: 'Monaco', 'Menlo', monospace;
    background: var(--bg-tertiary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.875rem;
}

/* Navigation */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.nav-brand a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-color);
    background: var(--bg-tertiary);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-address {
    font-family: monospace;
    color: var(--text-muted);
}

.user-role {
    background: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    text-transform: uppercase;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

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

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

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

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

.btn-small {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-logout {
    background: transparent;
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.875rem;
}

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

.btn-icon {
    padding: 0.25rem;
    background: transparent;
    border: none;
    cursor: pointer;
}

.btn-copy {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    opacity: 0.7;
}

.btn-copy:hover {
    opacity: 1;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.stat-card h3 {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* Wallet Cards */
.wallet-type-section {
    margin-bottom: 2rem;
}

.wallet-type-header {
    color: var(--text-muted);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

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

.wallet-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    transition: all 0.2s;
}

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

.wallet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.wallet-label {
    font-weight: 600;
    font-size: 1.1rem;
}

.wallet-address {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.wallet-balance {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 0.75rem;
}

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

.balance-value {
    font-weight: 600;
    font-family: monospace;
}

.wallet-description {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
}

.wallet-actions {
    display: flex;
    gap: 0.5rem;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 20px;
    background: var(--bg-tertiary);
}

.badge-success { background: var(--success-color); color: white; }
.badge-danger { background: var(--danger-color); color: white; }
.badge-warning { background: var(--warning-color); color: black; }
.badge-fee_payer { background: #8b5cf6; }
.badge-treasury { background: #f59e0b; }
.badge-payment { background: #10b981; }
.badge-distribution { background: #3b82f6; }

/* Data Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
}

.data-table th, .data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr:hover td {
    background: rgba(99, 102, 241, 0.05);
}

.empty-row {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem !important;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-muted);
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1rem;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 2rem;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Tabs */
.admin-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    border-radius: 8px 8px 0 0;
}

.tab-btn.active {
    color: var(--text-color);
    background: var(--bg-secondary);
}

.tab-content.hidden {
    display: none;
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-color), var(--bg-secondary));
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 1rem;
}

.login-box {
    background: var(--bg-secondary);
    padding: 3rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.login-box h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.login-subtitle {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.help-text {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 1rem;
}

.wallet-info {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.status-message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.status-message.success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.status-message.error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

/* Alert */
.alert {
    padding: 1.5rem;
    border-radius: 8px;
    text-align: left;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.2);
    border: 1px solid var(--warning-color);
}

.alert h3 {
    color: var(--warning-color);
    margin-bottom: 0.5rem;
}

/* Error Page */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.error-container h1 {
    font-size: 4rem;
    color: var(--danger-color);
}

/* Wallet Details */
.wallet-details {
    padding: 1rem 0;
}

.detail-row {
    margin-bottom: 1.25rem;
}

.detail-row label {
    display: block;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.balance-large {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.transactions-list {
    margin-top: 1rem;
}

.tx-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.tx-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-family: monospace;
}

.tx-time {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.tx-error {
    border-left: 3px solid var(--danger-color);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Utilities */
.hidden { display: none !important; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 200px; }

/* Select styling */
select.role-select {
    padding: 0.375rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    cursor: pointer;
}

select.role-select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Audit filters */
.audit-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.audit-filters select {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
}