:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --accent: #6c63ff;
    --accent-hover: #5a52d5;
    --accent-glow: rgba(108, 99, 255, 0.3);
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b80;
    --border: rgba(255, 255, 255, 0.08);
    --success: #00c853;
    --danger: #ff5252;
    --warning: #ffc107;
    --radius: 16px;
    --radius-sm: 10px;
}

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

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, #0d1b2a 100%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1000px; margin: 0 auto; padding: 20px; }

/* Auth Pages */
.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.auth-card h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #fff, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.auth-card p.subtitle {
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 14px;
}

.form-group { margin-bottom: 18px; }

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 15px;
    transition: all 0.3s;
    outline: none;
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    color: #fff;
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--accent-glow);
}

.btn-sm { padding: 8px 16px; font-size: 13px; width: auto; }

.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }

/* Navbar */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.navbar-brand span {
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.balance-badge {
    background: rgba(108, 99, 255, 0.15);
    color: var(--accent);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* 3-dot Menu */
.menu-wrapper { position: relative; }

.menu-trigger {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: background 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.menu-trigger:hover { background: rgba(255, 255, 255, 0.1); }

.menu-dropdown {
    position: absolute;
    top: 50px;
    right: 0;
    background: #1e1e36;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    min-width: 200px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    display: none;
    overflow: hidden;
    z-index: 200;
}

.menu-dropdown.show { display: block; animation: slideDown 0.2s ease; }

.menu-dropdown a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    color: var(--text-primary);
    font-size: 14px;
    transition: background 0.2s;
    text-decoration: none;
}

.menu-dropdown a:hover { background: rgba(255, 255, 255, 0.06); }

.menu-dropdown a svg { width: 18px; height: 18px; opacity: 0.7; }

.menu-divider {
    height: 1px;
    background: var(--border);
    margin: 4px 0;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Dashboard Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all 0.3s;
}

.stat-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.stat-card .icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 16px;
}

.stat-card .icon.purple { background: rgba(108, 99, 255, 0.15); }
.stat-card .icon.green { background: rgba(0, 200, 83, 0.15); }
.stat-card .icon.orange { background: rgba(255, 152, 0, 0.15); }

.stat-card .value {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-card .label {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Section Card */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    margin-bottom: 20px;
}

.card h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Table */
.table-wrapper { overflow-x: auto; }

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

table th, table td {
    padding: 14px 16px;
    text-align: left;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}

table th {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

table tr:hover td { background: rgba(255, 255, 255, 0.02); }

/* Tags */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
}

.tag-success { background: rgba(0, 200, 83, 0.15); color: var(--success); }
.tag-info { background: rgba(108, 99, 255, 0.15); color: var(--accent); }
.tag-warning { background: rgba(255, 193, 7, 0.15); color: var(--warning); }

/* Quick Send */
.quick-send {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.quick-send input {
    flex: 1;
    min-width: 180px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    transition: all 0.3s;
}

.quick-send input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.quick-send .btn { min-width: 140px; }

/* Alert */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success { background: rgba(0, 200, 83, 0.1); color: var(--success); border: 1px solid rgba(0, 200, 83, 0.2); }
.alert-danger { background: rgba(255, 82, 82, 0.1); color: var(--danger); border: 1px solid rgba(255, 82, 82, 0.2); }
.alert-info { background: rgba(108, 99, 255, 0.1); color: var(--accent); border: 1px solid rgba(108, 99, 255, 0.2); }

/* Profile */
.profile-header {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 30px;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.profile-info h2 { margin-bottom: 4px; }
.profile-info p { color: var(--text-secondary); font-size: 14px; }

/* Admin */
.user-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 12px;
}

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

.user-info-row { display: flex; align-items: center; gap: 12px; }

.user-avatar-sm {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    flex-shrink: 0;
}

.user-details h4 { font-size: 15px; margin-bottom: 2px; }
.user-details p { font-size: 13px; color: var(--text-secondary); }

.add-balance-form {
    display: flex;
    align-items: center;
    gap: 8px;
}

.add-balance-form input {
    width: 100px;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
}

/* Responsive */
@media (max-width: 768px) {
    .container { padding: 12px; }
    .auth-card { padding: 28px 20px; }
    .stats-grid { grid-template-columns: 1fr; }
    .navbar { padding: 12px 16px; }
    .navbar-brand { font-size: 17px; }
    .balance-badge { font-size: 12px; padding: 6px 12px; }
    .profile-header { flex-direction: column; text-align: center; }
    .quick-send { flex-direction: column; }
    .quick-send .btn { width: 100%; }
    .user-list-item { flex-direction: column; align-items: flex-start; }
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* Page transition */
.page-content { animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }