:root {
    --bg-color: #0d0f14;
    --card-bg: rgba(22, 28, 38, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --text-color: #f3f4f6;
    --text-muted: #9ca3af;
    --success: #10b981;
    --error: #ef4444;
}

/* Estilos de la página de Login */
body.admin-login-body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-image: radial-gradient(circle at 10% 20%, rgba(79, 70, 229, 0.1) 0%, transparent 40%);
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.login-card h2 {
    text-align: center;
    margin-bottom: 25px;
    font-weight: 700;
    background: linear-gradient(135deg, #818cf8 0%, #34d399 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-card button {
    width: 100%;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 12px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.login-card button:hover {
    opacity: 0.9;
}

.error-msg {
    color: var(--error);
    font-size: 13px;
    margin-bottom: 15px;
    text-align: center;
}

.cancel-link {
    display: block;
    text-align: center;
    margin-top: 15px;
    font-size: 13px;
    color: var(--text-muted);
    text-decoration: none;
}

/* Estilos de la página del Dashboard */
body.admin-dashboard-body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    margin: 0;
    background-image: radial-gradient(circle at 10% 20%, rgba(79, 70, 229, 0.08) 0%, transparent 45%);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(13, 15, 20, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-logo {
    font-weight: 700;
    font-size: 20px;
    background: linear-gradient(135deg, #818cf8 0%, #34d399 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.btn-link:hover {
    color: white;
}

.dashboard-layout {
    max-width: 1100px;
    margin: 40px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 40px;
}

.tab-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tab-btn {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 12px 18px;
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 14.5px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: block;
    box-sizing: border-box;
}

.tab-btn:hover {
    color: white;
    background: rgba(255, 255, 255, 0.03);
}

.tab-btn.active {
    background: rgba(79, 70, 229, 0.15);
    color: #818cf8;
    border-left: 3px solid var(--primary);
}

.tab-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

h3 {
    margin-top: 0;
    font-size: 22px;
    font-weight: 700;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 25px;
}

/* Estilos de Formularios Comunes */
.form-group {
    margin-bottom: 22px;
}

label {
    display: block;
    font-size: 13.5px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-muted);
}

input, select, textarea {
    width: 100%;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    color: white;
    box-sizing: border-box;
    font-family: inherit;
}

select option {
    background: #161c26;
    color: white;
}

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

.help-text {
    font-size: 12.5px;
    color: var(--text-muted);
    margin-top: 5px;
}

.btn-submit {
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 12px 24px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

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

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 25px;
    font-size: 14.5px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid var(--success);
    color: #34d399;
}

.alert-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid var(--error);
    color: #f87171;
}

.list-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.list-table th, .list-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.list-table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid var(--error);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12.5px;
}

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

.badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 11.5px;
    font-weight: 600;
}

.badge-success { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.badge-pending { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }

.setup-qr-box {
    background: white;
    padding: 15px;
    border-radius: 10px;
    display: inline-block;
    margin-bottom: 15px;
}

.changelog {
    background: rgba(0,0,0,0.2);
    border-radius: 8px;
    padding: 15px;
    font-family: monospace;
    font-size: 12.5px;
    color: #34d399;
    margin-top: 15px;
    white-space: pre-wrap;
    max-height: 150px;
    overflow-y: auto;
}

.update-card {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 25px;
}