:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #131825;
    --bg-tertiary: #1a1f35;
    --accent-primary: #00d4aa;
    --accent-secondary: #00a386;
    --accent-danger: #ff4757;
    --text-primary: #ffffff;
    --text-secondary: #8892b0;
    --border-color: #2d3748;
    --success: #00d4aa;
    --warning: #ffa502;
    --error: #ff4757;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Navigation */
.navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.navbar-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

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

/* Cards */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-header {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--accent-primary);
}

.card-body {
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    font-size: 0.95rem;
}

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

.btn-primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 212, 170, 0.3);
}

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

.btn-danger:hover {
    background: #e84352;
    transform: translateY(-2px);
}

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

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

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

.form-control {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

/* Flash Messages */
.flash-messages {
    margin-bottom: 1.5rem;
}

.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-weight: 500;
}

.alert-success {
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-error {
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
}

.alert-warning {
    background: rgba(255, 165, 2, 0.1);
    border: 1px solid var(--warning);
    color: var(--warning);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

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

/* Lists */
.list-group {
    list-style: none;
}

.list-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.list-item-content {
    flex: 1;
}

.list-item-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.list-item-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

/* Message Cards */
.message-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

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

.message-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.message-field {
    background: var(--bg-secondary);
    padding: 0.75rem;
    border-radius: 8px;
}

.message-field-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.message-field-value {
    font-weight: 600;
    color: var(--accent-primary);
}

.contract-address {
    font-family: 'Courier New', monospace;
    background: var(--bg-primary);
    padding: 0.5rem;
    border-radius: 6px;
    white-space: nowrap;
    overflow-x: auto;
    font-size: 0.9rem;
    cursor: text;
    user-select: all;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.pagination .btn {
    min-width: 100px;
}

.date-display {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--accent-primary);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(0, 212, 170, 0.2);
    color: var(--success);
}

.badge-danger {
    background: rgba(255, 71, 87, 0.2);
    color: var(--error);
}

.badge-warning {
    background: rgba(255, 165, 2, 0.2);
    color: var(--warning);
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.login-subtitle {
    color: var(--text-secondary);
}

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

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.flex {
    display: flex;
}

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

.justify-between {
    justify-content: space-between;
}

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

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .message-info {
        grid-template-columns: 1fr;
    }
}