:root {
    --primary-color: #4a5568;
    --primary-hover: #5a667a;
    --bg-color: #080808;
    --surface-color: #121212;
    --surface-hover: #1a1a1a;
    --text-color: #e2e8f0;
    --text-muted: #8a94a6;
    --border-color: #242424;
    --error-color: #a95e5e;
    --error-hover: #c46e6e;
    --success-color: #5ea97d;
    --border-radius: 6px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

/* Typography & Links */
a {
    color: var(--primary-hover);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* Unified Containers (Auth, Profile, General) */
.auth-container, .container {
    background-color: var(--surface-color);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.6);
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 420px;
    margin: auto;
    box-sizing: border-box;
}

.auth-header, .container h1 {
    text-align: center;
    margin-top: 0;
    margin-bottom: 1.5rem;
}

.auth-header h1, .container h1 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-color);
}

.auth-header p, .container p {
    color: var(--text-muted);
    margin-top: 0.5rem;
    font-size: 0.875rem;
    text-align: center;
}

/* Tabs */
.tabs {
    display: flex;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.tab {
    flex: 1;
    text-align: center;
    padding: 0.75rem;
    cursor: pointer;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.2s, border-bottom 0.2s;
    border-bottom: 2px solid transparent;
}

.tab.active {
    color: var(--text-color);
    border-bottom: 2px solid var(--primary-hover);
}

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

.form-group label, .container label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
}

input[type="text"], input[type="email"], input[type="password"] {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-sizing: border-box;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]:focus, input[type="email"]:focus, input[type="password"]:focus {
    outline: none;
    border-color: var(--primary-hover);
    box-shadow: 0 0 0 2px rgba(74, 85, 104, 0.4);
}

/* Buttons */
button {
    font-family: inherit;
}

.btn, .container button {
    width: 100%;
    background-color: var(--primary-color);
    color: var(--text-color);
    border: 1px solid transparent;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    box-sizing: border-box;
}

.btn:hover, .container button:hover {
    background-color: var(--primary-hover);
}

.btn:active, .container button:active {
    transform: translateY(1px);
}

.btn:disabled, .container button:disabled {
    background-color: var(--border-color);
    color: var(--text-muted);
    cursor: not-allowed;
    transform: none;
}

.btn-small {
    width: auto;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

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

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

.logout-btn {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.875rem;
}

.logout-btn:hover {
    background-color: var(--surface-hover);
    color: var(--text-color);
}

/* Messages */
.error-message, .container .error {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
    text-align: center;
    display: none;
    background-color: rgba(169, 94, 94, 0.1);
    padding: 0.5rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(169, 94, 94, 0.2);
}

.container .error {
    display: block; /* If it exists in DOM, show it */
}

/* Navbar */
.navbar {
    background-color: var(--surface-color);
    width: 100%;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-sizing: border-box;
}

.navbar h1 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
    letter-spacing: 0.025em;
}

/* Main Content Area */
.content {
    background-color: var(--surface-color);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    margin-top: 3rem;
    text-align: center;
    max-width: 600px;
    width: 90%;
    box-sizing: border-box;
}

/* Status Colors */
.status-loading {
    color: var(--text-muted);
}

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

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

/* Pre / Code blocks */
.pubkey-container {
    margin-top: 2rem;
    text-align: left;
    background-color: var(--bg-color);
    color: var(--text-muted);
    padding: 1.25rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.8125rem;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-x: auto;
}

/* Dashboard Cards */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.card {
    background-color: var(--bg-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    text-align: left;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.4);
    border-color: var(--primary-color);
    background-color: var(--surface-hover);
}

.card h3 {
    margin: 0 0 0.75rem 0;
    color: var(--text-color);
    font-size: 1.125rem;
}

.card p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* User Management */
.search-container {
    margin-top: 2rem;
    display: flex;
    gap: 0.75rem;
}

.search-container input {
    margin-bottom: 0; /* Override generic input margin */
}

.user-list {
    margin-top: 2rem;
    text-align: left;
}

.user-item {
    background-color: var(--bg-color);
    padding: 1.25rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: border-color 0.2s;
}

.user-item:hover {
    border-color: var(--primary-color);
}

.user-info strong {
    display: block;
    color: var(--text-color);
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.user-info span {
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

.stat-box {
    display: inline-block;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.stat-box strong {
    color: var(--text-color);
    font-size: 1.125rem;
    margin-left: 0.5rem;
}